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https://github.com/tinygo-org/tinygo.git
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2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 sago35
|
eafca3c583 | ||
|
sago35
|
a01c3423a1 |
@@ -0,0 +1,54 @@
|
||||
package main
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||||
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import (
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"fmt"
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"machine"
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"machine/usb/midi"
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"time"
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)
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func main() {
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led := machine.LED
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led.Configure(machine.PinConfig{Mode: machine.PinOutput})
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button := machine.BUTTON
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button.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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m := midi.New()
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m.SetCallback(func(b []byte) {
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led.Set(!led.Get())
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fmt.Printf("% X\r\n", b)
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m.Write(b)
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})
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prev := true
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chords := []struct {
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name string
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keys []byte
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}{
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{name: "C ", keys: []byte{60, 64, 67}},
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{name: "G ", keys: []byte{55, 59, 62}},
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{name: "Am", keys: []byte{57, 60, 64}},
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{name: "F ", keys: []byte{53, 57, 60}},
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}
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index := 0
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for {
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current := button.Get()
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if prev != current {
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led.Set(current)
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if current {
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for _, c := range chords[index].keys {
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m.Write([]byte{0x08, 0x80, c, 0x40})
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}
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index = (index + 1) % len(chords)
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} else {
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for _, c := range chords[index].keys {
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m.Write([]byte{0x09, 0x90, c, 0x40})
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}
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}
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prev = current
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}
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time.Sleep(10 * time.Millisecond)
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}
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}
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@@ -60,3 +60,14 @@ const (
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// Default Serial In Bus 1 for SPI communications
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SPI1_SDI_PIN = GPIO12 // Rx
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Adafruit Feather RP2040"
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usb_STRING_MANUFACTURER = "Adafruit"
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)
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var (
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usb_VID uint16 = 0x239A
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usb_PID uint16 = 0x80F1
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)
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@@ -64,3 +64,14 @@ const (
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// Default Serial In Bus 1 for SPI communications
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SPI1_SDI_PIN = GPIO12 // Rx
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Raspberry Pi Pico"
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usb_STRING_MANUFACTURER = "Raspberry Pi"
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)
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var (
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usb_VID uint16 = 0x2E8A
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usb_PID uint16 = 0x0003
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)
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@@ -13,7 +13,6 @@ import (
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"device/sam"
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"errors"
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"runtime/interrupt"
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"runtime/volatile"
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"unsafe"
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)
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@@ -1735,926 +1734,6 @@ func (tcc *TCC) Set(channel uint8, value uint32) {
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}
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}
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// USBCDC is the USB CDC aka serial over USB interface on the SAMD21.
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type USBCDC struct {
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Buffer *RingBuffer
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TxIdx volatile.Register8
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waitTxc bool
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waitTxcRetryCount uint8
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sent bool
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configured bool
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}
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var (
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USB = &USBCDC{Buffer: NewRingBuffer()}
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waitHidTxc bool
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)
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const (
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usbcdcTxSizeMask uint8 = 0x3F
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usbcdcTxBankMask uint8 = ^usbcdcTxSizeMask
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usbcdcTxBank1st uint8 = 0x00
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usbcdcTxBank2nd uint8 = usbcdcTxSizeMask + 1
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usbcdcTxMaxRetriesAllowed uint8 = 5
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)
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// Flush flushes buffered data.
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func (usbcdc *USBCDC) Flush() error {
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if usbLineInfo.lineState > 0 {
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idx := usbcdc.TxIdx.Get()
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sz := idx & usbcdcTxSizeMask
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bk := idx & usbcdcTxBankMask
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if 0 < sz {
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if usbcdc.waitTxc {
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// waiting for the next flush(), because the transmission is not complete
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usbcdc.waitTxcRetryCount++
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return nil
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}
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usbcdc.waitTxc = true
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usbcdc.waitTxcRetryCount = 0
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// set the data
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][bk]))))
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if bk == usbcdcTxBank1st {
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usbcdc.TxIdx.Set(usbcdcTxBank2nd)
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} else {
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usbcdc.TxIdx.Set(usbcdcTxBank1st)
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}
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// clean multi packet size of bytes already sent
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
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// set count of bytes to be sent
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
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usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.SetBits((uint32(sz) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
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// clear transfer complete flag
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setEPINTFLAG(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
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// send data by setting bank ready
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setEPSTATUSSET(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
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usbcdc.sent = true
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}
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}
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return nil
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}
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// WriteByte writes a byte of data to the USB CDC interface.
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func (usbcdc *USBCDC) WriteByte(c byte) error {
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// Supposedly to handle problem with Windows USB serial ports?
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if usbLineInfo.lineState > 0 {
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ok := false
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for {
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mask := interrupt.Disable()
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idx := usbcdc.TxIdx.Get()
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if (idx & usbcdcTxSizeMask) < usbcdcTxSizeMask {
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udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][idx] = c
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usbcdc.TxIdx.Set(idx + 1)
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ok = true
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}
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interrupt.Restore(mask)
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if ok {
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break
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} else if usbcdcTxMaxRetriesAllowed < usbcdc.waitTxcRetryCount {
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mask := interrupt.Disable()
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usbcdc.waitTxc = false
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usbcdc.waitTxcRetryCount = 0
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usbcdc.TxIdx.Set(0)
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usbLineInfo.lineState = 0
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interrupt.Restore(mask)
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break
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} else {
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mask := interrupt.Disable()
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if usbcdc.sent {
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if usbcdc.waitTxc {
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if (getEPINTFLAG(usb_CDC_ENDPOINT_IN) & sam.USB_DEVICE_EPINTFLAG_TRCPT1) != 0 {
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setEPSTATUSCLR(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
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setEPINTFLAG(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
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usbcdc.waitTxc = false
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usbcdc.Flush()
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}
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} else {
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usbcdc.Flush()
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}
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}
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interrupt.Restore(mask)
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}
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}
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}
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return nil
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}
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func (usbcdc *USBCDC) DTR() bool {
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return (usbLineInfo.lineState & usb_CDC_LINESTATE_DTR) > 0
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}
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func (usbcdc *USBCDC) RTS() bool {
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return (usbLineInfo.lineState & usb_CDC_LINESTATE_RTS) > 0
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}
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const (
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// these are SAMD21 specific.
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usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos = 0
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usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask = 0x3FFF
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usb_DEVICE_PCKSIZE_SIZE_Pos = 28
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usb_DEVICE_PCKSIZE_SIZE_Mask = 0x7
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usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos = 14
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usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask = 0x3FFF
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)
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var (
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usbEndpointDescriptors [8]usbDeviceDescriptor
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udd_ep_in_cache_buffer [7][128]uint8
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udd_ep_out_cache_buffer [7][128]uint8
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isEndpointHalt = false
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isRemoteWakeUpEnabled = false
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endPoints = []uint32{usb_ENDPOINT_TYPE_CONTROL,
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(usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn),
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(usb_ENDPOINT_TYPE_BULK | usbEndpointOut),
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(usb_ENDPOINT_TYPE_BULK | usbEndpointIn)}
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usbConfiguration uint8
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usbSetInterface uint8
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usbLineInfo = cdcLineInfo{115200, 0x00, 0x00, 0x08, 0x00}
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)
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// Configure the USB CDC interface. The config is here for compatibility with the UART interface.
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func (usbcdc *USBCDC) Configure(config UARTConfig) {
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// reset USB interface
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sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_SWRST)
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for sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_SWRST) ||
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sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_ENABLE) {
|
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}
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sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
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|
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// configure pins
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USBCDC_DM_PIN.Configure(PinConfig{Mode: PinCom})
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USBCDC_DP_PIN.Configure(PinConfig{Mode: PinCom})
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|
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// performs pad calibration from store fuses
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handlePadCalibration()
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// run in standby
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sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_RUNSTDBY)
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// set full speed
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sam.USB_DEVICE.CTRLB.SetBits(sam.USB_DEVICE_CTRLB_SPDCONF_FS << sam.USB_DEVICE_CTRLB_SPDCONF_Pos)
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// attach
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sam.USB_DEVICE.CTRLB.ClearBits(sam.USB_DEVICE_CTRLB_DETACH)
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|
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// enable interrupt for end of reset
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sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_EORST)
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// enable interrupt for start of frame
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sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_SOF)
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|
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// enable USB
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sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_ENABLE)
|
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|
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// enable IRQ
|
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intr := interrupt.New(sam.IRQ_USB, handleUSB)
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intr.Enable()
|
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|
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usbcdc.configured = true
|
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}
|
||||
|
||||
// Configured returns whether usbcdc is configured or not.
|
||||
func (usbcdc *USBCDC) Configured() bool {
|
||||
return usbcdc.configured
|
||||
}
|
||||
|
||||
func handlePadCalibration() {
|
||||
// Load Pad Calibration data from non-volatile memory
|
||||
// This requires registers that are not included in the SVD file.
|
||||
// Modeled after defines from samd21g18a.h and nvmctrl.h:
|
||||
//
|
||||
// #define NVMCTRL_OTP4 0x00806020
|
||||
//
|
||||
// #define USB_FUSES_TRANSN_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSN_Pos 13 /**< \brief (NVMCTRL_OTP4) USB pad Transn calibration */
|
||||
// #define USB_FUSES_TRANSN_Msk (0x1Fu << USB_FUSES_TRANSN_Pos)
|
||||
// #define USB_FUSES_TRANSN(value) ((USB_FUSES_TRANSN_Msk & ((value) << USB_FUSES_TRANSN_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRANSP_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSP_Pos 18 /**< \brief (NVMCTRL_OTP4) USB pad Transp calibration */
|
||||
// #define USB_FUSES_TRANSP_Msk (0x1Fu << USB_FUSES_TRANSP_Pos)
|
||||
// #define USB_FUSES_TRANSP(value) ((USB_FUSES_TRANSP_Msk & ((value) << USB_FUSES_TRANSP_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRIM_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRIM_Pos 23 /**< \brief (NVMCTRL_OTP4) USB pad Trim calibration */
|
||||
// #define USB_FUSES_TRIM_Msk (0x7u << USB_FUSES_TRIM_Pos)
|
||||
// #define USB_FUSES_TRIM(value) ((USB_FUSES_TRIM_Msk & ((value) << USB_FUSES_TRIM_Pos)))
|
||||
//
|
||||
fuse := *(*uint32)(unsafe.Pointer(uintptr(0x00806020) + 4))
|
||||
calibTransN := uint16(fuse>>13) & uint16(0x1f)
|
||||
calibTransP := uint16(fuse>>18) & uint16(0x1f)
|
||||
calibTrim := uint16(fuse>>23) & uint16(0x7)
|
||||
|
||||
if calibTransN == 0x1f {
|
||||
calibTransN = 5
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransN << sam.USB_DEVICE_PADCAL_TRANSN_Pos)
|
||||
|
||||
if calibTransP == 0x1f {
|
||||
calibTransP = 29
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransP << sam.USB_DEVICE_PADCAL_TRANSP_Pos)
|
||||
|
||||
if calibTrim == 0x7 {
|
||||
calibTrim = 3
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTrim << sam.USB_DEVICE_PADCAL_TRIM_Pos)
|
||||
}
|
||||
|
||||
func handleUSB(intr interrupt.Interrupt) {
|
||||
// reset all interrupt flags
|
||||
flags := sam.USB_DEVICE.INTFLAG.Get()
|
||||
sam.USB_DEVICE.INTFLAG.Set(flags)
|
||||
|
||||
// End of reset
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_EORST) > 0 {
|
||||
// Configure control endpoint
|
||||
initEndpoint(0, usb_ENDPOINT_TYPE_CONTROL)
|
||||
|
||||
// Enable Setup-Received interrupt
|
||||
setEPINTENSET(0, sam.USB_DEVICE_EPINTENSET_RXSTP)
|
||||
|
||||
usbConfiguration = 0
|
||||
|
||||
// ack the End-Of-Reset interrupt
|
||||
sam.USB_DEVICE.INTFLAG.Set(sam.USB_DEVICE_INTFLAG_EORST)
|
||||
}
|
||||
|
||||
// Start of frame
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_SOF) > 0 {
|
||||
USB.Flush()
|
||||
// if you want to blink LED showing traffic, this would be the place...
|
||||
if hidCallback != nil && !waitHidTxc {
|
||||
hidCallback()
|
||||
}
|
||||
}
|
||||
|
||||
// Endpoint 0 Setup interrupt
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_EPINTFLAG_RXSTP > 0 {
|
||||
// ack setup received
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_RXSTP)
|
||||
|
||||
// parse setup
|
||||
setup := newUSBSetup(udd_ep_out_cache_buffer[0][:])
|
||||
|
||||
// Clear the Bank 0 ready flag on Control OUT
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
ok := false
|
||||
if (setup.bmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
// Class Interface Requests
|
||||
if setup.wIndex == usb_CDC_ACM_INTERFACE {
|
||||
ok = cdcSetup(setup)
|
||||
} else if setup.bmRequestType == usb_SET_REPORT_TYPE && setup.bRequest == usb_SET_IDLE {
|
||||
sendZlp()
|
||||
ok = true
|
||||
}
|
||||
}
|
||||
|
||||
if ok {
|
||||
// set Bank1 ready
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
} else {
|
||||
// Stall endpoint
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPINTFLAG_STALL1)
|
||||
}
|
||||
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_EPINTFLAG_STALL1 > 0 {
|
||||
// ack the stall
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_STALL1)
|
||||
|
||||
// clear stall request
|
||||
setEPINTENCLR(0, sam.USB_DEVICE_EPINTENCLR_STALL1)
|
||||
}
|
||||
}
|
||||
|
||||
// Now the actual transfer handlers, ignore endpoint number 0 (setup)
|
||||
var i uint32
|
||||
for i = 1; i < uint32(len(endPoints)); i++ {
|
||||
// Check if endpoint has a pending interrupt
|
||||
epFlags := getEPINTFLAG(i)
|
||||
if (epFlags&sam.USB_DEVICE_EPINTFLAG_TRCPT0) > 0 ||
|
||||
(epFlags&sam.USB_DEVICE_EPINTFLAG_TRCPT1) > 0 {
|
||||
switch i {
|
||||
case usb_CDC_ENDPOINT_OUT:
|
||||
handleEndpoint(i)
|
||||
setEPINTFLAG(i, epFlags)
|
||||
case usb_CDC_ENDPOINT_IN, usb_CDC_ENDPOINT_ACM:
|
||||
setEPSTATUSCLR(i, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
|
||||
setEPINTFLAG(i, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
|
||||
if i == usb_CDC_ENDPOINT_IN {
|
||||
USB.waitTxc = false
|
||||
}
|
||||
case usb_HID_ENDPOINT_IN:
|
||||
setEPINTFLAG(i, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
waitHidTxc = false
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func initEndpoint(ep, config uint32) {
|
||||
switch config {
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_INTERRUPT + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// receive interrupts when current transfer complete
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_EPINTENSET_TRCPT0)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// ready for next transfer
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointOut:
|
||||
// TODO: not really anything, seems like...
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// NAK on endpoint IN, the bank is not yet filled in.
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_CONTROL:
|
||||
// Control OUT
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// Control IN
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// Prepare OUT endpoint for receive
|
||||
// set multi packet size for expected number of receive bytes on control OUT
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// NAK on endpoint OUT to show we are ready to receive control data
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_EPSTATUSSET_BK0RDY)
|
||||
}
|
||||
}
|
||||
|
||||
func handleStandardSetup(setup usbSetup) bool {
|
||||
switch setup.bRequest {
|
||||
case usb_GET_STATUS:
|
||||
buf := []byte{0, 0}
|
||||
|
||||
if setup.bmRequestType != 0 { // endpoint
|
||||
// TODO: actually check if the endpoint in question is currently halted
|
||||
if isEndpointHalt {
|
||||
buf[0] = 1
|
||||
}
|
||||
}
|
||||
|
||||
sendUSBPacket(0, buf, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_CLEAR_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = false
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = false
|
||||
}
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = true
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = true
|
||||
}
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_ADDRESS:
|
||||
// set packet size 64 with auto Zlp after transfer
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.Set((epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos) |
|
||||
uint32(1<<31)) // autozlp
|
||||
|
||||
// ack the transfer is complete from the request
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
|
||||
// set bank ready for data
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
sam.USB_DEVICE.DADD.SetBits(setup.wValueL)
|
||||
sam.USB_DEVICE.DADD.SetBits(sam.USB_DEVICE_DADD_ADDEN)
|
||||
|
||||
return true
|
||||
|
||||
case usb_GET_DESCRIPTOR:
|
||||
sendDescriptor(setup)
|
||||
return true
|
||||
|
||||
case usb_SET_DESCRIPTOR:
|
||||
return false
|
||||
|
||||
case usb_GET_CONFIGURATION:
|
||||
buff := []byte{usbConfiguration}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_CONFIGURATION:
|
||||
if setup.bmRequestType&usb_REQUEST_RECIPIENT == usb_REQUEST_DEVICE {
|
||||
for i := 1; i < len(endPoints); i++ {
|
||||
initEndpoint(uint32(i), endPoints[i])
|
||||
}
|
||||
|
||||
usbConfiguration = setup.wValueL
|
||||
|
||||
// Enable interrupt for CDC control messages from host (OUT packet)
|
||||
setEPINTENSET(usb_CDC_ENDPOINT_ACM, sam.USB_DEVICE_EPINTENSET_TRCPT1)
|
||||
|
||||
// Enable interrupt for CDC data messages from host
|
||||
setEPINTENSET(usb_CDC_ENDPOINT_OUT, sam.USB_DEVICE_EPINTENSET_TRCPT0)
|
||||
|
||||
// Enable interrupt for HID messages from host
|
||||
if hidCallback != nil {
|
||||
setEPINTENSET(usb_HID_ENDPOINT_IN, sam.USB_DEVICE_EPINTENSET_TRCPT1)
|
||||
}
|
||||
|
||||
sendZlp()
|
||||
return true
|
||||
} else {
|
||||
return false
|
||||
}
|
||||
|
||||
case usb_GET_INTERFACE:
|
||||
buff := []byte{usbSetInterface}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_INTERFACE:
|
||||
usbSetInterface = setup.wValueL
|
||||
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
func cdcSetup(setup usbSetup) bool {
|
||||
if setup.bmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_GET_LINE_CODING {
|
||||
var b [cdcLineInfoSize]byte
|
||||
b[0] = byte(usbLineInfo.dwDTERate)
|
||||
b[1] = byte(usbLineInfo.dwDTERate >> 8)
|
||||
b[2] = byte(usbLineInfo.dwDTERate >> 16)
|
||||
b[3] = byte(usbLineInfo.dwDTERate >> 24)
|
||||
b[4] = byte(usbLineInfo.bCharFormat)
|
||||
b[5] = byte(usbLineInfo.bParityType)
|
||||
b[6] = byte(usbLineInfo.bDataBits)
|
||||
|
||||
sendUSBPacket(0, b[:], setup.wLength)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if setup.bmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_SET_LINE_CODING {
|
||||
b, err := receiveUSBControlPacket()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
usbLineInfo.dwDTERate = uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
||||
usbLineInfo.bCharFormat = b[4]
|
||||
usbLineInfo.bParityType = b[5]
|
||||
usbLineInfo.bDataBits = b[6]
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
usbLineInfo.lineState = setup.wValueL
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SET_LINE_CODING || setup.bRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
// auto-reset into the bootloader
|
||||
if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
|
||||
ResetProcessor()
|
||||
} else {
|
||||
// TODO: cancel any reset
|
||||
}
|
||||
sendZlp()
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SEND_BREAK {
|
||||
// TODO: something with this value?
|
||||
// breakValue = ((uint16_t)setup.wValueH << 8) | setup.wValueL;
|
||||
// return false;
|
||||
sendZlp()
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// SendUSBHIDPacket sends a packet for USBHID (interrupt / in).
|
||||
func SendUSBHIDPacket(ep uint32, data []byte) bool {
|
||||
if waitHidTxc {
|
||||
return false
|
||||
}
|
||||
sendUSBPacket(ep, data, 0)
|
||||
|
||||
// clear transfer complete flag
|
||||
setEPINTFLAG(ep, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
|
||||
// send data by setting bank ready
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
|
||||
waitHidTxc = true
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
//go:noinline
|
||||
func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
l := uint16(len(data))
|
||||
if 0 < maxsize && maxsize < l {
|
||||
l = maxsize
|
||||
}
|
||||
copy(udd_ep_in_cache_buffer[ep][:], data[:l])
|
||||
|
||||
// Set endpoint address for sending data
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// clear multi-packet size which is total bytes already sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count, which is total number of bytes to be sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits((uint32(l) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func receiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
|
||||
// address
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
// Wait until OUT transfer is ready.
|
||||
timeout := 300000
|
||||
for (getEPSTATUS(0) & sam.USB_DEVICE_EPSTATUS_BK0RDY) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until OUT transfer is completed.
|
||||
timeout = 300000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_EPINTFLAG_TRCPT0) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// get data
|
||||
bytesread := uint32((usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
if bytesread != cdcLineInfoSize {
|
||||
return b, errUSBCDCBytesRead
|
||||
}
|
||||
|
||||
copy(b[:7], udd_ep_out_cache_buffer[0][:7])
|
||||
|
||||
return b, nil
|
||||
}
|
||||
|
||||
func handleEndpoint(ep uint32) {
|
||||
// get data
|
||||
count := int((usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
// move to ring buffer
|
||||
for i := 0; i < count; i++ {
|
||||
USB.Receive(byte((udd_ep_out_cache_buffer[ep][i] & 0xFF)))
|
||||
}
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set multi packet size to 64
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
}
|
||||
|
||||
func sendZlp() {
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func epPacketSize(size uint16) uint32 {
|
||||
switch size {
|
||||
case 8:
|
||||
return 0
|
||||
case 16:
|
||||
return 1
|
||||
case 32:
|
||||
return 2
|
||||
case 64:
|
||||
return 3
|
||||
case 128:
|
||||
return 4
|
||||
case 256:
|
||||
return 5
|
||||
case 512:
|
||||
return 6
|
||||
case 1023:
|
||||
return 7
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPCFG(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPCFG0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPCFG1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPCFG2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPCFG3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPCFG4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPCFG5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPCFG6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPCFG7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func setEPCFG(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPCFG0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPCFG1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPCFG2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPCFG3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPCFG4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPCFG5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPCFG6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPCFG7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPSTATUSCLR(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPSTATUSCLR0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPSTATUSCLR1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPSTATUSCLR2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPSTATUSCLR3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPSTATUSCLR4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPSTATUSCLR5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPSTATUSCLR6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPSTATUSCLR7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPSTATUSSET(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPSTATUSSET0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPSTATUSSET1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPSTATUSSET2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPSTATUSSET3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPSTATUSSET4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPSTATUSSET5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPSTATUSSET6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPSTATUSSET7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func getEPSTATUS(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPSTATUS0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPSTATUS1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPSTATUS2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPSTATUS3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPSTATUS4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPSTATUS5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPSTATUS6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPSTATUS7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPINTFLAG(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPINTFLAG0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPINTFLAG1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPINTFLAG2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPINTFLAG3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPINTFLAG4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPINTFLAG5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPINTFLAG6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPINTFLAG7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTFLAG(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTFLAG0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTFLAG1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTFLAG2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTFLAG3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTFLAG4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTFLAG5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTFLAG6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTFLAG7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTENCLR(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTENCLR0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTENCLR1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTENCLR2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTENCLR3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTENCLR4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTENCLR5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTENCLR6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTENCLR7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTENSET(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTENSET0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTENSET1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTENSET2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTENSET3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTENSET4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTENSET5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTENSET6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTENSET7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// ResetProcessor should perform a system reset in preperation
|
||||
// to switch to the bootloader to flash new firmware.
|
||||
func ResetProcessor() {
|
||||
|
||||
@@ -0,0 +1,628 @@
|
||||
//go:build sam && atsamd21
|
||||
// +build sam,atsamd21
|
||||
|
||||
package machine
|
||||
|
||||
import (
|
||||
"device/sam"
|
||||
"runtime/interrupt"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
// these are SAMD21 specific.
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos = 0
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask = 0x3FFF
|
||||
|
||||
usb_DEVICE_PCKSIZE_SIZE_Pos = 28
|
||||
usb_DEVICE_PCKSIZE_SIZE_Mask = 0x7
|
||||
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos = 14
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask = 0x3FFF
|
||||
)
|
||||
|
||||
// Configure the USB peripheral. The config is here for compatibility with the UART interface.
|
||||
func (dev *USBDevice) Configure(config UARTConfig) {
|
||||
// reset USB interface
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_SWRST)
|
||||
for sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_SWRST) ||
|
||||
sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
|
||||
|
||||
// configure pins
|
||||
USBCDC_DM_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
USBCDC_DP_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
|
||||
// performs pad calibration from store fuses
|
||||
handlePadCalibration()
|
||||
|
||||
// run in standby
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_RUNSTDBY)
|
||||
|
||||
// set full speed
|
||||
sam.USB_DEVICE.CTRLB.SetBits(sam.USB_DEVICE_CTRLB_SPDCONF_FS << sam.USB_DEVICE_CTRLB_SPDCONF_Pos)
|
||||
|
||||
// attach
|
||||
sam.USB_DEVICE.CTRLB.ClearBits(sam.USB_DEVICE_CTRLB_DETACH)
|
||||
|
||||
// enable interrupt for end of reset
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_EORST)
|
||||
|
||||
// enable interrupt for start of frame
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_SOF)
|
||||
|
||||
// enable USB
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_ENABLE)
|
||||
|
||||
// enable IRQ
|
||||
interrupt.New(sam.IRQ_USB, handleUSBIRQ).Enable()
|
||||
}
|
||||
|
||||
func handlePadCalibration() {
|
||||
// Load Pad Calibration data from non-volatile memory
|
||||
// This requires registers that are not included in the SVD file.
|
||||
// Modeled after defines from samd21g18a.h and nvmctrl.h:
|
||||
//
|
||||
// #define NVMCTRL_OTP4 0x00806020
|
||||
//
|
||||
// #define USB_FUSES_TRANSN_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSN_Pos 13 /**< \brief (NVMCTRL_OTP4) USB pad Transn calibration */
|
||||
// #define USB_FUSES_TRANSN_Msk (0x1Fu << USB_FUSES_TRANSN_Pos)
|
||||
// #define USB_FUSES_TRANSN(value) ((USB_FUSES_TRANSN_Msk & ((value) << USB_FUSES_TRANSN_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRANSP_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSP_Pos 18 /**< \brief (NVMCTRL_OTP4) USB pad Transp calibration */
|
||||
// #define USB_FUSES_TRANSP_Msk (0x1Fu << USB_FUSES_TRANSP_Pos)
|
||||
// #define USB_FUSES_TRANSP(value) ((USB_FUSES_TRANSP_Msk & ((value) << USB_FUSES_TRANSP_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRIM_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRIM_Pos 23 /**< \brief (NVMCTRL_OTP4) USB pad Trim calibration */
|
||||
// #define USB_FUSES_TRIM_Msk (0x7u << USB_FUSES_TRIM_Pos)
|
||||
// #define USB_FUSES_TRIM(value) ((USB_FUSES_TRIM_Msk & ((value) << USB_FUSES_TRIM_Pos)))
|
||||
//
|
||||
fuse := *(*uint32)(unsafe.Pointer(uintptr(0x00806020) + 4))
|
||||
calibTransN := uint16(fuse>>13) & uint16(0x1f)
|
||||
calibTransP := uint16(fuse>>18) & uint16(0x1f)
|
||||
calibTrim := uint16(fuse>>23) & uint16(0x7)
|
||||
|
||||
if calibTransN == 0x1f {
|
||||
calibTransN = 5
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransN << sam.USB_DEVICE_PADCAL_TRANSN_Pos)
|
||||
|
||||
if calibTransP == 0x1f {
|
||||
calibTransP = 29
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransP << sam.USB_DEVICE_PADCAL_TRANSP_Pos)
|
||||
|
||||
if calibTrim == 0x7 {
|
||||
calibTrim = 3
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTrim << sam.USB_DEVICE_PADCAL_TRIM_Pos)
|
||||
}
|
||||
|
||||
func handleUSBIRQ(intr interrupt.Interrupt) {
|
||||
// reset all interrupt flags
|
||||
flags := sam.USB_DEVICE.INTFLAG.Get()
|
||||
sam.USB_DEVICE.INTFLAG.Set(flags)
|
||||
|
||||
// End of reset
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_EORST) > 0 {
|
||||
// Configure control endpoint
|
||||
initEndpoint(0, usb_ENDPOINT_TYPE_CONTROL)
|
||||
|
||||
usbConfiguration = 0
|
||||
|
||||
// ack the End-Of-Reset interrupt
|
||||
sam.USB_DEVICE.INTFLAG.Set(sam.USB_DEVICE_INTFLAG_EORST)
|
||||
}
|
||||
|
||||
// Start of frame
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_SOF) > 0 {
|
||||
// if you want to blink LED showing traffic, this would be the place...
|
||||
}
|
||||
|
||||
// Endpoint 0 Setup interrupt
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_EPINTFLAG_RXSTP > 0 {
|
||||
// ack setup received
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_RXSTP)
|
||||
|
||||
// parse setup
|
||||
setup := newUSBSetup(udd_ep_out_cache_buffer[0][:])
|
||||
|
||||
// Clear the Bank 0 ready flag on Control OUT
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
ok := false
|
||||
if (setup.BmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
// Class Interface Requests
|
||||
if setup.WIndex < uint16(len(callbackUSBSetup)) && callbackUSBSetup[setup.WIndex] != nil {
|
||||
ok = callbackUSBSetup[setup.WIndex](setup)
|
||||
}
|
||||
}
|
||||
|
||||
if ok {
|
||||
// set Bank1 ready
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
} else {
|
||||
// Stall endpoint
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPINTFLAG_STALL1)
|
||||
}
|
||||
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_EPINTFLAG_STALL1 > 0 {
|
||||
// ack the stall
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_STALL1)
|
||||
|
||||
// clear stall request
|
||||
setEPINTENCLR(0, sam.USB_DEVICE_EPINTENCLR_STALL1)
|
||||
}
|
||||
}
|
||||
|
||||
// Now the actual transfer handlers, ignore endpoint number 0 (setup)
|
||||
var i uint32
|
||||
for i = 1; i < uint32(len(endPoints)); i++ {
|
||||
// Check if endpoint has a pending interrupt
|
||||
epFlags := getEPINTFLAG(i)
|
||||
setEPINTFLAG(i, epFlags)
|
||||
if (epFlags & sam.USB_DEVICE_EPINTFLAG_TRCPT0) > 0 {
|
||||
buf := handleEndpointRx(i)
|
||||
if callbackUSBRx[i] != nil {
|
||||
callbackUSBRx[i](buf)
|
||||
}
|
||||
} else if (epFlags & sam.USB_DEVICE_EPINTFLAG_TRCPT1) > 0 {
|
||||
if callbackUSBTx[i] != nil {
|
||||
callbackUSBTx[i]()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func initEndpoint(ep, config uint32) {
|
||||
switch config {
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_INTERRUPT + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_EPINTENSET_TRCPT1)
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// receive interrupts when current transfer complete
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_EPINTENSET_TRCPT0)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// ready for next transfer
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointOut:
|
||||
// TODO: not really anything, seems like...
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// NAK on endpoint IN, the bank is not yet filled in.
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK1RDY)
|
||||
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_EPINTENSET_TRCPT1)
|
||||
|
||||
case usb_ENDPOINT_TYPE_CONTROL:
|
||||
// Control OUT
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// Control IN
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// Prepare OUT endpoint for receive
|
||||
// set multi packet size for expected number of receive bytes on control OUT
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// NAK on endpoint OUT to show we are ready to receive control data
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_EPSTATUSSET_BK0RDY)
|
||||
|
||||
// Enable Setup-Received interrupt
|
||||
setEPINTENSET(0, sam.USB_DEVICE_EPINTENSET_RXSTP)
|
||||
}
|
||||
}
|
||||
|
||||
func handleUSBSetAddress(setup USBSetup) bool {
|
||||
// set packet size 64 with auto Zlp after transfer
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.Set((epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos) |
|
||||
uint32(1<<31)) // autozlp
|
||||
|
||||
// ack the transfer is complete from the request
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
|
||||
// set bank ready for data
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
sam.USB_DEVICE.DADD.SetBits(setup.WValueL)
|
||||
sam.USB_DEVICE.DADD.SetBits(sam.USB_DEVICE_DADD_ADDEN)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// SendUSBInPacket sends a packet for USB (interrupt in / bulk in).
|
||||
func SendUSBInPacket(ep uint32, data []byte) bool {
|
||||
sendUSBPacket(ep, data, 0)
|
||||
|
||||
// clear transfer complete flag
|
||||
setEPINTFLAG(ep, sam.USB_DEVICE_EPINTFLAG_TRCPT1)
|
||||
|
||||
// send data by setting bank ready
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_EPSTATUSSET_BK1RDY)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
//go:noinline
|
||||
func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
l := uint16(len(data))
|
||||
if 0 < maxsize && maxsize < l {
|
||||
l = maxsize
|
||||
}
|
||||
copy(udd_ep_in_cache_buffer[ep][:], data[:l])
|
||||
|
||||
// Set endpoint address for sending data
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// clear multi-packet size which is total bytes already sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count, which is total number of bytes to be sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits((uint32(l) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
|
||||
// address
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
// Wait until OUT transfer is ready.
|
||||
timeout := 300000
|
||||
for (getEPSTATUS(0) & sam.USB_DEVICE_EPSTATUS_BK0RDY) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until OUT transfer is completed.
|
||||
timeout = 300000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_EPINTFLAG_TRCPT0) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// get data
|
||||
bytesread := uint32((usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
if bytesread != cdcLineInfoSize {
|
||||
return b, errUSBCDCBytesRead
|
||||
}
|
||||
|
||||
copy(b[:7], udd_ep_out_cache_buffer[0][:7])
|
||||
|
||||
return b, nil
|
||||
}
|
||||
|
||||
func handleEndpointRx(ep uint32) []byte {
|
||||
// get data
|
||||
count := int((usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
// move to ring buffer
|
||||
buf := make([]byte, count)
|
||||
copy(buf, udd_ep_out_cache_buffer[ep][:])
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set multi packet size to 64
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
return buf[:count]
|
||||
}
|
||||
|
||||
func SendZlp() {
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func epPacketSize(size uint16) uint32 {
|
||||
switch size {
|
||||
case 8:
|
||||
return 0
|
||||
case 16:
|
||||
return 1
|
||||
case 32:
|
||||
return 2
|
||||
case 64:
|
||||
return 3
|
||||
case 128:
|
||||
return 4
|
||||
case 256:
|
||||
return 5
|
||||
case 512:
|
||||
return 6
|
||||
case 1023:
|
||||
return 7
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPCFG(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPCFG0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPCFG1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPCFG2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPCFG3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPCFG4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPCFG5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPCFG6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPCFG7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func setEPCFG(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPCFG0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPCFG1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPCFG2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPCFG3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPCFG4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPCFG5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPCFG6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPCFG7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPSTATUSCLR(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPSTATUSCLR0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPSTATUSCLR1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPSTATUSCLR2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPSTATUSCLR3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPSTATUSCLR4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPSTATUSCLR5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPSTATUSCLR6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPSTATUSCLR7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPSTATUSSET(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPSTATUSSET0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPSTATUSSET1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPSTATUSSET2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPSTATUSSET3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPSTATUSSET4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPSTATUSSET5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPSTATUSSET6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPSTATUSSET7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func getEPSTATUS(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPSTATUS0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPSTATUS1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPSTATUS2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPSTATUS3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPSTATUS4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPSTATUS5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPSTATUS6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPSTATUS7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPINTFLAG(ep uint32) uint8 {
|
||||
switch ep {
|
||||
case 0:
|
||||
return sam.USB_DEVICE.EPINTFLAG0.Get()
|
||||
case 1:
|
||||
return sam.USB_DEVICE.EPINTFLAG1.Get()
|
||||
case 2:
|
||||
return sam.USB_DEVICE.EPINTFLAG2.Get()
|
||||
case 3:
|
||||
return sam.USB_DEVICE.EPINTFLAG3.Get()
|
||||
case 4:
|
||||
return sam.USB_DEVICE.EPINTFLAG4.Get()
|
||||
case 5:
|
||||
return sam.USB_DEVICE.EPINTFLAG5.Get()
|
||||
case 6:
|
||||
return sam.USB_DEVICE.EPINTFLAG6.Get()
|
||||
case 7:
|
||||
return sam.USB_DEVICE.EPINTFLAG7.Get()
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTFLAG(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTFLAG0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTFLAG1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTFLAG2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTFLAG3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTFLAG4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTFLAG5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTFLAG6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTFLAG7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTENCLR(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTENCLR0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTENCLR1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTENCLR2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTENCLR3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTENCLR4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTENCLR5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTENCLR6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTENCLR7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func setEPINTENSET(ep uint32, val uint8) {
|
||||
switch ep {
|
||||
case 0:
|
||||
sam.USB_DEVICE.EPINTENSET0.Set(val)
|
||||
case 1:
|
||||
sam.USB_DEVICE.EPINTENSET1.Set(val)
|
||||
case 2:
|
||||
sam.USB_DEVICE.EPINTENSET2.Set(val)
|
||||
case 3:
|
||||
sam.USB_DEVICE.EPINTENSET3.Set(val)
|
||||
case 4:
|
||||
sam.USB_DEVICE.EPINTENSET4.Set(val)
|
||||
case 5:
|
||||
sam.USB_DEVICE.EPINTENSET5.Set(val)
|
||||
case 6:
|
||||
sam.USB_DEVICE.EPINTENSET6.Set(val)
|
||||
case 7:
|
||||
sam.USB_DEVICE.EPINTENSET7.Set(val)
|
||||
default:
|
||||
return
|
||||
}
|
||||
}
|
||||
@@ -13,7 +13,6 @@ import (
|
||||
"device/sam"
|
||||
"errors"
|
||||
"runtime/interrupt"
|
||||
"runtime/volatile"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
@@ -1975,759 +1974,6 @@ func (tcc *TCC) Set(channel uint8, value uint32) {
|
||||
}
|
||||
}
|
||||
|
||||
// USBCDC is the USB CDC aka serial over USB interface on the SAMD21.
|
||||
type USBCDC struct {
|
||||
Buffer *RingBuffer
|
||||
TxIdx volatile.Register8
|
||||
waitTxc bool
|
||||
waitTxcRetryCount uint8
|
||||
sent bool
|
||||
configured bool
|
||||
}
|
||||
|
||||
var (
|
||||
// USB is a USB CDC interface.
|
||||
USB = &USBCDC{Buffer: NewRingBuffer()}
|
||||
waitHidTxc bool
|
||||
)
|
||||
|
||||
const (
|
||||
usbcdcTxSizeMask uint8 = 0x3F
|
||||
usbcdcTxBankMask uint8 = ^usbcdcTxSizeMask
|
||||
usbcdcTxBank1st uint8 = 0x00
|
||||
usbcdcTxBank2nd uint8 = usbcdcTxSizeMask + 1
|
||||
usbcdcTxMaxRetriesAllowed uint8 = 5
|
||||
)
|
||||
|
||||
// Flush flushes buffered data.
|
||||
func (usbcdc *USBCDC) Flush() error {
|
||||
if usbLineInfo.lineState > 0 {
|
||||
idx := usbcdc.TxIdx.Get()
|
||||
sz := idx & usbcdcTxSizeMask
|
||||
bk := idx & usbcdcTxBankMask
|
||||
if 0 < sz {
|
||||
|
||||
if usbcdc.waitTxc {
|
||||
// waiting for the next flush(), because the transmission is not complete
|
||||
usbcdc.waitTxcRetryCount++
|
||||
return nil
|
||||
}
|
||||
usbcdc.waitTxc = true
|
||||
usbcdc.waitTxcRetryCount = 0
|
||||
|
||||
// set the data
|
||||
usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][bk]))))
|
||||
if bk == usbcdcTxBank1st {
|
||||
usbcdc.TxIdx.Set(usbcdcTxBank2nd)
|
||||
} else {
|
||||
usbcdc.TxIdx.Set(usbcdcTxBank1st)
|
||||
}
|
||||
|
||||
// clean multi packet size of bytes already sent
|
||||
usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set count of bytes to be sent
|
||||
usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
usbEndpointDescriptors[usb_CDC_ENDPOINT_IN].DeviceDescBank[1].PCKSIZE.SetBits((uint32(sz) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// clear transfer complete flag
|
||||
setEPINTFLAG(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
// send data by setting bank ready
|
||||
setEPSTATUSSET(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
usbcdc.sent = true
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// WriteByte writes a byte of data to the USB CDC interface.
|
||||
func (usbcdc *USBCDC) WriteByte(c byte) error {
|
||||
// Supposedly to handle problem with Windows USB serial ports?
|
||||
if usbLineInfo.lineState > 0 {
|
||||
ok := false
|
||||
for {
|
||||
mask := interrupt.Disable()
|
||||
|
||||
idx := usbcdc.TxIdx.Get()
|
||||
if (idx & usbcdcTxSizeMask) < usbcdcTxSizeMask {
|
||||
udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][idx] = c
|
||||
usbcdc.TxIdx.Set(idx + 1)
|
||||
ok = true
|
||||
}
|
||||
|
||||
interrupt.Restore(mask)
|
||||
|
||||
if ok {
|
||||
break
|
||||
} else if usbcdcTxMaxRetriesAllowed < usbcdc.waitTxcRetryCount {
|
||||
mask := interrupt.Disable()
|
||||
usbcdc.waitTxc = false
|
||||
usbcdc.waitTxcRetryCount = 0
|
||||
usbcdc.TxIdx.Set(0)
|
||||
usbLineInfo.lineState = 0
|
||||
interrupt.Restore(mask)
|
||||
break
|
||||
} else {
|
||||
mask := interrupt.Disable()
|
||||
if usbcdc.sent {
|
||||
if usbcdc.waitTxc {
|
||||
if (getEPINTFLAG(usb_CDC_ENDPOINT_IN) & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) != 0 {
|
||||
setEPSTATUSCLR(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK1RDY)
|
||||
setEPINTFLAG(usb_CDC_ENDPOINT_IN, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
usbcdc.waitTxc = false
|
||||
usbcdc.Flush()
|
||||
}
|
||||
} else {
|
||||
usbcdc.Flush()
|
||||
}
|
||||
}
|
||||
interrupt.Restore(mask)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) DTR() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_DTR) > 0
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) RTS() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_RTS) > 0
|
||||
}
|
||||
|
||||
const (
|
||||
// these are SAMD51 specific.
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos = 0
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask = 0x3FFF
|
||||
|
||||
usb_DEVICE_PCKSIZE_SIZE_Pos = 28
|
||||
usb_DEVICE_PCKSIZE_SIZE_Mask = 0x7
|
||||
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos = 14
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask = 0x3FFF
|
||||
)
|
||||
|
||||
var (
|
||||
usbEndpointDescriptors [8]usbDeviceDescriptor
|
||||
|
||||
udd_ep_in_cache_buffer [7][128]uint8
|
||||
udd_ep_out_cache_buffer [7][128]uint8
|
||||
|
||||
isEndpointHalt = false
|
||||
isRemoteWakeUpEnabled = false
|
||||
endPoints = []uint32{usb_ENDPOINT_TYPE_CONTROL,
|
||||
(usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointOut),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointIn)}
|
||||
|
||||
usbConfiguration uint8
|
||||
usbSetInterface uint8
|
||||
usbLineInfo = cdcLineInfo{115200, 0x00, 0x00, 0x08, 0x00}
|
||||
)
|
||||
|
||||
// Configure the USB CDC interface. The config is here for compatibility with the UART interface.
|
||||
func (usbcdc *USBCDC) Configure(config UARTConfig) {
|
||||
// reset USB interface
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_SWRST)
|
||||
for sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_SWRST) ||
|
||||
sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
|
||||
|
||||
// configure pins
|
||||
USBCDC_DM_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
USBCDC_DP_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
|
||||
// performs pad calibration from store fuses
|
||||
handlePadCalibration()
|
||||
|
||||
// run in standby
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_RUNSTDBY)
|
||||
|
||||
// set full speed
|
||||
sam.USB_DEVICE.CTRLB.SetBits(sam.USB_DEVICE_CTRLB_SPDCONF_FS << sam.USB_DEVICE_CTRLB_SPDCONF_Pos)
|
||||
|
||||
// attach
|
||||
sam.USB_DEVICE.CTRLB.ClearBits(sam.USB_DEVICE_CTRLB_DETACH)
|
||||
|
||||
// enable interrupt for end of reset
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_EORST)
|
||||
|
||||
// enable interrupt for start of frame
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_SOF)
|
||||
|
||||
// enable USB
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_ENABLE)
|
||||
|
||||
// enable IRQ at highest priority
|
||||
interrupt.New(sam.IRQ_USB_OTHER, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_SOF_HSOF, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_TRCPT0, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_TRCPT1, handleUSBIRQ).Enable()
|
||||
|
||||
usbcdc.configured = true
|
||||
}
|
||||
|
||||
// Configured returns whether usbcdc is configured or not.
|
||||
func (usbcdc *USBCDC) Configured() bool {
|
||||
return usbcdc.configured
|
||||
}
|
||||
|
||||
func handlePadCalibration() {
|
||||
// Load Pad Calibration data from non-volatile memory
|
||||
// This requires registers that are not included in the SVD file.
|
||||
// Modeled after defines from samd21g18a.h and nvmctrl.h:
|
||||
//
|
||||
// #define NVMCTRL_OTP4 0x00806020
|
||||
//
|
||||
// #define USB_FUSES_TRANSN_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSN_Pos 13 /**< \brief (NVMCTRL_OTP4) USB pad Transn calibration */
|
||||
// #define USB_FUSES_TRANSN_Msk (0x1Fu << USB_FUSES_TRANSN_Pos)
|
||||
// #define USB_FUSES_TRANSN(value) ((USB_FUSES_TRANSN_Msk & ((value) << USB_FUSES_TRANSN_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRANSP_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSP_Pos 18 /**< \brief (NVMCTRL_OTP4) USB pad Transp calibration */
|
||||
// #define USB_FUSES_TRANSP_Msk (0x1Fu << USB_FUSES_TRANSP_Pos)
|
||||
// #define USB_FUSES_TRANSP(value) ((USB_FUSES_TRANSP_Msk & ((value) << USB_FUSES_TRANSP_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRIM_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRIM_Pos 23 /**< \brief (NVMCTRL_OTP4) USB pad Trim calibration */
|
||||
// #define USB_FUSES_TRIM_Msk (0x7u << USB_FUSES_TRIM_Pos)
|
||||
// #define USB_FUSES_TRIM(value) ((USB_FUSES_TRIM_Msk & ((value) << USB_FUSES_TRIM_Pos)))
|
||||
//
|
||||
fuse := *(*uint32)(unsafe.Pointer(uintptr(0x00806020) + 4))
|
||||
calibTransN := uint16(fuse>>13) & uint16(0x1f)
|
||||
calibTransP := uint16(fuse>>18) & uint16(0x1f)
|
||||
calibTrim := uint16(fuse>>23) & uint16(0x7)
|
||||
|
||||
if calibTransN == 0x1f {
|
||||
calibTransN = 5
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransN << sam.USB_DEVICE_PADCAL_TRANSN_Pos)
|
||||
|
||||
if calibTransP == 0x1f {
|
||||
calibTransP = 29
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransP << sam.USB_DEVICE_PADCAL_TRANSP_Pos)
|
||||
|
||||
if calibTrim == 0x7 {
|
||||
calibTrim = 3
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTrim << sam.USB_DEVICE_PADCAL_TRIM_Pos)
|
||||
}
|
||||
|
||||
func handleUSBIRQ(interrupt.Interrupt) {
|
||||
// reset all interrupt flags
|
||||
flags := sam.USB_DEVICE.INTFLAG.Get()
|
||||
sam.USB_DEVICE.INTFLAG.Set(flags)
|
||||
|
||||
// End of reset
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_EORST) > 0 {
|
||||
// Configure control endpoint
|
||||
initEndpoint(0, usb_ENDPOINT_TYPE_CONTROL)
|
||||
|
||||
// Enable Setup-Received interrupt
|
||||
setEPINTENSET(0, sam.USB_DEVICE_ENDPOINT_EPINTENSET_RXSTP)
|
||||
|
||||
usbConfiguration = 0
|
||||
|
||||
// ack the End-Of-Reset interrupt
|
||||
sam.USB_DEVICE.INTFLAG.Set(sam.USB_DEVICE_INTFLAG_EORST)
|
||||
}
|
||||
|
||||
// Start of frame
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_SOF) > 0 {
|
||||
USB.Flush()
|
||||
if hidCallback != nil && !waitHidTxc {
|
||||
hidCallback()
|
||||
}
|
||||
// if you want to blink LED showing traffic, this would be the place...
|
||||
}
|
||||
|
||||
// Endpoint 0 Setup interrupt
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_RXSTP > 0 {
|
||||
// ack setup received
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_RXSTP)
|
||||
|
||||
// parse setup
|
||||
setup := newUSBSetup(udd_ep_out_cache_buffer[0][:])
|
||||
|
||||
// Clear the Bank 0 ready flag on Control OUT
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
ok := false
|
||||
if (setup.bmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
// Class Interface Requests
|
||||
if setup.wIndex == usb_CDC_ACM_INTERFACE {
|
||||
ok = cdcSetup(setup)
|
||||
} else if setup.bmRequestType == usb_SET_REPORT_TYPE && setup.bRequest == usb_SET_IDLE {
|
||||
sendZlp()
|
||||
ok = true
|
||||
}
|
||||
}
|
||||
|
||||
if ok {
|
||||
// set Bank1 ready
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
} else {
|
||||
// Stall endpoint
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
}
|
||||
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1 > 0 {
|
||||
// ack the stall
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
|
||||
// clear stall request
|
||||
setEPINTENCLR(0, sam.USB_DEVICE_ENDPOINT_EPINTENCLR_STALL1)
|
||||
}
|
||||
}
|
||||
|
||||
// Now the actual transfer handlers, ignore endpoint number 0 (setup)
|
||||
var i uint32
|
||||
for i = 1; i < uint32(len(endPoints)); i++ {
|
||||
// Check if endpoint has a pending interrupt
|
||||
epFlags := getEPINTFLAG(i)
|
||||
if (epFlags&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT0) > 0 ||
|
||||
(epFlags&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) > 0 {
|
||||
switch i {
|
||||
case usb_CDC_ENDPOINT_OUT:
|
||||
handleEndpoint(i)
|
||||
setEPINTFLAG(i, epFlags)
|
||||
case usb_CDC_ENDPOINT_IN, usb_CDC_ENDPOINT_ACM:
|
||||
setEPSTATUSCLR(i, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK1RDY)
|
||||
setEPINTFLAG(i, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
if i == usb_CDC_ENDPOINT_IN {
|
||||
USB.waitTxc = false
|
||||
}
|
||||
case usb_HID_ENDPOINT_IN:
|
||||
setEPINTFLAG(i, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
waitHidTxc = false
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func initEndpoint(ep, config uint32) {
|
||||
switch config {
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_INTERRUPT + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// receive interrupts when current transfer complete
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT0)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// ready for next transfer
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointOut:
|
||||
// TODO: not really anything, seems like...
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// NAK on endpoint IN, the bank is not yet filled in.
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK1RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_CONTROL:
|
||||
// Control OUT
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// Control IN
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// Prepare OUT endpoint for receive
|
||||
// set multi packet size for expected number of receive bytes on control OUT
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// NAK on endpoint OUT to show we are ready to receive control data
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK0RDY)
|
||||
}
|
||||
}
|
||||
|
||||
func handleStandardSetup(setup usbSetup) bool {
|
||||
switch setup.bRequest {
|
||||
case usb_GET_STATUS:
|
||||
buf := []byte{0, 0}
|
||||
|
||||
if setup.bmRequestType != 0 { // endpoint
|
||||
// TODO: actually check if the endpoint in question is currently halted
|
||||
if isEndpointHalt {
|
||||
buf[0] = 1
|
||||
}
|
||||
}
|
||||
|
||||
sendUSBPacket(0, buf, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_CLEAR_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = false
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = false
|
||||
}
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = true
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = true
|
||||
}
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_ADDRESS:
|
||||
// set packet size 64 with auto Zlp after transfer
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.Set((epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos) |
|
||||
uint32(1<<31)) // autozlp
|
||||
|
||||
// ack the transfer is complete from the request
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
// set bank ready for data
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
sam.USB_DEVICE.DADD.SetBits(setup.wValueL)
|
||||
sam.USB_DEVICE.DADD.SetBits(sam.USB_DEVICE_DADD_ADDEN)
|
||||
|
||||
return true
|
||||
|
||||
case usb_GET_DESCRIPTOR:
|
||||
sendDescriptor(setup)
|
||||
return true
|
||||
|
||||
case usb_SET_DESCRIPTOR:
|
||||
return false
|
||||
|
||||
case usb_GET_CONFIGURATION:
|
||||
buff := []byte{usbConfiguration}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_CONFIGURATION:
|
||||
if setup.bmRequestType&usb_REQUEST_RECIPIENT == usb_REQUEST_DEVICE {
|
||||
for i := 1; i < len(endPoints); i++ {
|
||||
initEndpoint(uint32(i), endPoints[i])
|
||||
}
|
||||
|
||||
usbConfiguration = setup.wValueL
|
||||
|
||||
// Enable interrupt for CDC control messages from host (OUT packet)
|
||||
setEPINTENSET(usb_CDC_ENDPOINT_ACM, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT1)
|
||||
|
||||
// Enable interrupt for CDC data messages from host
|
||||
setEPINTENSET(usb_CDC_ENDPOINT_OUT, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT0)
|
||||
|
||||
// Enable interrupt for HID messages from host
|
||||
if hidCallback != nil {
|
||||
setEPINTENSET(usb_HID_ENDPOINT_IN, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT1)
|
||||
}
|
||||
|
||||
sendZlp()
|
||||
return true
|
||||
} else {
|
||||
return false
|
||||
}
|
||||
|
||||
case usb_GET_INTERFACE:
|
||||
buff := []byte{usbSetInterface}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_INTERFACE:
|
||||
usbSetInterface = setup.wValueL
|
||||
|
||||
sendZlp()
|
||||
return true
|
||||
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
func cdcSetup(setup usbSetup) bool {
|
||||
if setup.bmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_GET_LINE_CODING {
|
||||
var b [cdcLineInfoSize]byte
|
||||
b[0] = byte(usbLineInfo.dwDTERate)
|
||||
b[1] = byte(usbLineInfo.dwDTERate >> 8)
|
||||
b[2] = byte(usbLineInfo.dwDTERate >> 16)
|
||||
b[3] = byte(usbLineInfo.dwDTERate >> 24)
|
||||
b[4] = byte(usbLineInfo.bCharFormat)
|
||||
b[5] = byte(usbLineInfo.bParityType)
|
||||
b[6] = byte(usbLineInfo.bDataBits)
|
||||
|
||||
sendUSBPacket(0, b[:], setup.wLength)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if setup.bmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_SET_LINE_CODING {
|
||||
b, err := receiveUSBControlPacket()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
usbLineInfo.dwDTERate = uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
||||
usbLineInfo.bCharFormat = b[4]
|
||||
usbLineInfo.bParityType = b[5]
|
||||
usbLineInfo.bDataBits = b[6]
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
usbLineInfo.lineState = setup.wValueL
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SET_LINE_CODING || setup.bRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
// auto-reset into the bootloader
|
||||
if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
|
||||
ResetProcessor()
|
||||
} else {
|
||||
// TODO: cancel any reset
|
||||
}
|
||||
sendZlp()
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SEND_BREAK {
|
||||
// TODO: something with this value?
|
||||
// breakValue = ((uint16_t)setup.wValueH << 8) | setup.wValueL;
|
||||
// return false;
|
||||
sendZlp()
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// SendUSBHIDPacket sends a packet for USBHID (interrupt / in).
|
||||
func SendUSBHIDPacket(ep uint32, data []byte) bool {
|
||||
if waitHidTxc {
|
||||
return false
|
||||
}
|
||||
|
||||
sendUSBPacket(ep, data, 0)
|
||||
|
||||
// clear transfer complete flag
|
||||
setEPINTFLAG(ep, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
// send data by setting bank ready
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
|
||||
waitHidTxc = true
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
//go:noinline
|
||||
func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
l := uint16(len(data))
|
||||
if 0 < maxsize && maxsize < l {
|
||||
l = maxsize
|
||||
}
|
||||
copy(udd_ep_in_cache_buffer[ep][:], data[:l])
|
||||
|
||||
// Set endpoint address for sending data
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// clear multi-packet size which is total bytes already sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count, which is total number of bytes to be sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits((uint32(l) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func receiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
|
||||
// address
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
// Wait until OUT transfer is ready.
|
||||
timeout := 300000
|
||||
for (getEPSTATUS(0) & sam.USB_DEVICE_ENDPOINT_EPSTATUS_BK0RDY) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until OUT transfer is completed.
|
||||
timeout = 300000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// get data
|
||||
bytesread := uint32((usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
if bytesread != cdcLineInfoSize {
|
||||
return b, errUSBCDCBytesRead
|
||||
}
|
||||
|
||||
copy(b[:7], udd_ep_out_cache_buffer[0][:7])
|
||||
|
||||
return b, nil
|
||||
}
|
||||
|
||||
func handleEndpoint(ep uint32) {
|
||||
// get data
|
||||
count := int((usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
// move to ring buffer
|
||||
for i := 0; i < count; i++ {
|
||||
USB.Receive(byte((udd_ep_out_cache_buffer[ep][i] & 0xFF)))
|
||||
}
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set multi packet size to 64
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
}
|
||||
|
||||
func sendZlp() {
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func epPacketSize(size uint16) uint32 {
|
||||
switch size {
|
||||
case 8:
|
||||
return 0
|
||||
case 16:
|
||||
return 1
|
||||
case 32:
|
||||
return 2
|
||||
case 64:
|
||||
return 3
|
||||
case 128:
|
||||
return 4
|
||||
case 256:
|
||||
return 5
|
||||
case 512:
|
||||
return 6
|
||||
case 1023:
|
||||
return 7
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPCFG(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPCFG.Get()
|
||||
}
|
||||
|
||||
func setEPCFG(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPCFG.Set(val)
|
||||
}
|
||||
|
||||
func setEPSTATUSCLR(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUSCLR.Set(val)
|
||||
}
|
||||
|
||||
func setEPSTATUSSET(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUSSET.Set(val)
|
||||
}
|
||||
|
||||
func getEPSTATUS(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUS.Get()
|
||||
}
|
||||
|
||||
func getEPINTFLAG(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTFLAG.Get()
|
||||
}
|
||||
|
||||
func setEPINTFLAG(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTFLAG.Set(val)
|
||||
}
|
||||
|
||||
func setEPINTENCLR(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTENCLR.Set(val)
|
||||
}
|
||||
|
||||
func setEPINTENSET(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTENSET.Set(val)
|
||||
}
|
||||
|
||||
// ResetProcessor should perform a system reset in preparation
|
||||
// to switch to the bootloader to flash new firmware.
|
||||
func ResetProcessor() {
|
||||
|
||||
@@ -0,0 +1,460 @@
|
||||
//go:build (sam && atsamd51) || (sam && atsame5x)
|
||||
// +build sam,atsamd51 sam,atsame5x
|
||||
|
||||
package machine
|
||||
|
||||
import (
|
||||
"device/sam"
|
||||
"runtime/interrupt"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
// these are SAMD51 specific.
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos = 0
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask = 0x3FFF
|
||||
|
||||
usb_DEVICE_PCKSIZE_SIZE_Pos = 28
|
||||
usb_DEVICE_PCKSIZE_SIZE_Mask = 0x7
|
||||
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos = 14
|
||||
usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask = 0x3FFF
|
||||
)
|
||||
|
||||
// Configure the USB peripheral. The config is here for compatibility with the UART interface.
|
||||
func (dev *USBDevice) Configure(config UARTConfig) {
|
||||
// reset USB interface
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_SWRST)
|
||||
for sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_SWRST) ||
|
||||
sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
|
||||
|
||||
// configure pins
|
||||
USBCDC_DM_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
USBCDC_DP_PIN.Configure(PinConfig{Mode: PinCom})
|
||||
|
||||
// performs pad calibration from store fuses
|
||||
handlePadCalibration()
|
||||
|
||||
// run in standby
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_RUNSTDBY)
|
||||
|
||||
// set full speed
|
||||
sam.USB_DEVICE.CTRLB.SetBits(sam.USB_DEVICE_CTRLB_SPDCONF_FS << sam.USB_DEVICE_CTRLB_SPDCONF_Pos)
|
||||
|
||||
// attach
|
||||
sam.USB_DEVICE.CTRLB.ClearBits(sam.USB_DEVICE_CTRLB_DETACH)
|
||||
|
||||
// enable interrupt for end of reset
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_EORST)
|
||||
|
||||
// enable interrupt for start of frame
|
||||
sam.USB_DEVICE.INTENSET.SetBits(sam.USB_DEVICE_INTENSET_SOF)
|
||||
|
||||
// enable USB
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_ENABLE)
|
||||
|
||||
// enable IRQ
|
||||
interrupt.New(sam.IRQ_USB_OTHER, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_SOF_HSOF, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_TRCPT0, handleUSBIRQ).Enable()
|
||||
interrupt.New(sam.IRQ_USB_TRCPT1, handleUSBIRQ).Enable()
|
||||
}
|
||||
|
||||
func handlePadCalibration() {
|
||||
// Load Pad Calibration data from non-volatile memory
|
||||
// This requires registers that are not included in the SVD file.
|
||||
// Modeled after defines from samd21g18a.h and nvmctrl.h:
|
||||
//
|
||||
// #define NVMCTRL_OTP4 0x00806020
|
||||
//
|
||||
// #define USB_FUSES_TRANSN_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSN_Pos 13 /**< \brief (NVMCTRL_OTP4) USB pad Transn calibration */
|
||||
// #define USB_FUSES_TRANSN_Msk (0x1Fu << USB_FUSES_TRANSN_Pos)
|
||||
// #define USB_FUSES_TRANSN(value) ((USB_FUSES_TRANSN_Msk & ((value) << USB_FUSES_TRANSN_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRANSP_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRANSP_Pos 18 /**< \brief (NVMCTRL_OTP4) USB pad Transp calibration */
|
||||
// #define USB_FUSES_TRANSP_Msk (0x1Fu << USB_FUSES_TRANSP_Pos)
|
||||
// #define USB_FUSES_TRANSP(value) ((USB_FUSES_TRANSP_Msk & ((value) << USB_FUSES_TRANSP_Pos)))
|
||||
|
||||
// #define USB_FUSES_TRIM_ADDR (NVMCTRL_OTP4 + 4)
|
||||
// #define USB_FUSES_TRIM_Pos 23 /**< \brief (NVMCTRL_OTP4) USB pad Trim calibration */
|
||||
// #define USB_FUSES_TRIM_Msk (0x7u << USB_FUSES_TRIM_Pos)
|
||||
// #define USB_FUSES_TRIM(value) ((USB_FUSES_TRIM_Msk & ((value) << USB_FUSES_TRIM_Pos)))
|
||||
//
|
||||
fuse := *(*uint32)(unsafe.Pointer(uintptr(0x00806020) + 4))
|
||||
calibTransN := uint16(fuse>>13) & uint16(0x1f)
|
||||
calibTransP := uint16(fuse>>18) & uint16(0x1f)
|
||||
calibTrim := uint16(fuse>>23) & uint16(0x7)
|
||||
|
||||
if calibTransN == 0x1f {
|
||||
calibTransN = 5
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransN << sam.USB_DEVICE_PADCAL_TRANSN_Pos)
|
||||
|
||||
if calibTransP == 0x1f {
|
||||
calibTransP = 29
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTransP << sam.USB_DEVICE_PADCAL_TRANSP_Pos)
|
||||
|
||||
if calibTrim == 0x7 {
|
||||
calibTrim = 3
|
||||
}
|
||||
sam.USB_DEVICE.PADCAL.SetBits(calibTrim << sam.USB_DEVICE_PADCAL_TRIM_Pos)
|
||||
}
|
||||
|
||||
func handleUSBIRQ(intr interrupt.Interrupt) {
|
||||
// reset all interrupt flags
|
||||
flags := sam.USB_DEVICE.INTFLAG.Get()
|
||||
sam.USB_DEVICE.INTFLAG.Set(flags)
|
||||
|
||||
// End of reset
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_EORST) > 0 {
|
||||
// Configure control endpoint
|
||||
initEndpoint(0, usb_ENDPOINT_TYPE_CONTROL)
|
||||
|
||||
usbConfiguration = 0
|
||||
|
||||
// ack the End-Of-Reset interrupt
|
||||
sam.USB_DEVICE.INTFLAG.Set(sam.USB_DEVICE_INTFLAG_EORST)
|
||||
}
|
||||
|
||||
// Start of frame
|
||||
if (flags & sam.USB_DEVICE_INTFLAG_SOF) > 0 {
|
||||
// if you want to blink LED showing traffic, this would be the place...
|
||||
}
|
||||
|
||||
// Endpoint 0 Setup interrupt
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_RXSTP > 0 {
|
||||
// ack setup received
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_RXSTP)
|
||||
|
||||
// parse setup
|
||||
setup := newUSBSetup(udd_ep_out_cache_buffer[0][:])
|
||||
|
||||
// Clear the Bank 0 ready flag on Control OUT
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
ok := false
|
||||
if (setup.BmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
// Class Interface Requests
|
||||
if setup.WIndex < uint16(len(callbackUSBSetup)) && callbackUSBSetup[setup.WIndex] != nil {
|
||||
ok = callbackUSBSetup[setup.WIndex](setup)
|
||||
}
|
||||
}
|
||||
|
||||
if ok {
|
||||
// set Bank1 ready
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
} else {
|
||||
// Stall endpoint
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
}
|
||||
|
||||
if getEPINTFLAG(0)&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1 > 0 {
|
||||
// ack the stall
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
|
||||
// clear stall request
|
||||
setEPINTENCLR(0, sam.USB_DEVICE_ENDPOINT_EPINTENCLR_STALL1)
|
||||
}
|
||||
}
|
||||
|
||||
// Now the actual transfer handlers, ignore endpoint number 0 (setup)
|
||||
var i uint32
|
||||
for i = 1; i < uint32(len(endPoints)); i++ {
|
||||
// Check if endpoint has a pending interrupt
|
||||
epFlags := getEPINTFLAG(i)
|
||||
setEPINTFLAG(i, epFlags)
|
||||
if (epFlags & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT0) > 0 {
|
||||
buf := handleEndpointRx(i)
|
||||
if callbackUSBRx[i] != nil {
|
||||
callbackUSBRx[i](buf)
|
||||
}
|
||||
} else if (epFlags & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) > 0 {
|
||||
if callbackUSBTx[i] != nil {
|
||||
callbackUSBTx[i]()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func initEndpoint(ep, config uint32) {
|
||||
switch config {
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_INTERRUPT + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT1)
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// receive interrupts when current transfer complete
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT0)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// ready for next transfer
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointOut:
|
||||
// TODO: not really anything, seems like...
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointIn:
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, ((usb_ENDPOINT_TYPE_BULK + 1) << sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// NAK on endpoint IN, the bank is not yet filled in.
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK1RDY)
|
||||
|
||||
setEPINTENSET(ep, sam.USB_DEVICE_ENDPOINT_EPINTENSET_TRCPT1)
|
||||
|
||||
case usb_ENDPOINT_TYPE_CONTROL:
|
||||
// Control OUT
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE0_Pos))
|
||||
|
||||
// Control IN
|
||||
// set packet size
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits(epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos)
|
||||
|
||||
// set data buffer address
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// set endpoint type
|
||||
setEPCFG(ep, getEPCFG(ep)|((usb_ENDPOINT_TYPE_CONTROL+1)<<sam.USB_DEVICE_ENDPOINT_EPCFG_EPTYPE1_Pos))
|
||||
|
||||
// Prepare OUT endpoint for receive
|
||||
// set multi packet size for expected number of receive bytes on control OUT
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count to zero, we have not received anything yet
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// NAK on endpoint OUT to show we are ready to receive control data
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK0RDY)
|
||||
|
||||
// Enable Setup-Received interrupt
|
||||
setEPINTENSET(0, sam.USB_DEVICE_ENDPOINT_EPINTENSET_RXSTP)
|
||||
}
|
||||
}
|
||||
|
||||
func handleUSBSetAddress(setup USBSetup) bool {
|
||||
// set packet size 64 with auto Zlp after transfer
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.Set((epPacketSize(64) << usb_DEVICE_PCKSIZE_SIZE_Pos) |
|
||||
uint32(1<<31)) // autozlp
|
||||
|
||||
// ack the transfer is complete from the request
|
||||
setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
// set bank ready for data
|
||||
setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
sam.USB_DEVICE.DADD.SetBits(setup.WValueL)
|
||||
sam.USB_DEVICE.DADD.SetBits(sam.USB_DEVICE_DADD_ADDEN)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// SendUSBInPacket sends a packet for USB (interrupt in / bulk in).
|
||||
func SendUSBInPacket(ep uint32, data []byte) bool {
|
||||
sendUSBPacket(ep, data, 0)
|
||||
|
||||
// clear transfer complete flag
|
||||
setEPINTFLAG(ep, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT1)
|
||||
|
||||
// send data by setting bank ready
|
||||
setEPSTATUSSET(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
//go:noinline
|
||||
func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
l := uint16(len(data))
|
||||
if 0 < maxsize && maxsize < l {
|
||||
l = maxsize
|
||||
}
|
||||
copy(udd_ep_in_cache_buffer[ep][:], data[:l])
|
||||
|
||||
// Set endpoint address for sending data
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_in_cache_buffer[ep]))))
|
||||
|
||||
// clear multi-packet size which is total bytes already sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Mask << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set byte count, which is total number of bytes to be sent
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[1].PCKSIZE.SetBits((uint32(l) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask) << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
|
||||
// address
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].ADDR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
// Wait until OUT transfer is ready.
|
||||
timeout := 300000
|
||||
for (getEPSTATUS(0) & sam.USB_DEVICE_ENDPOINT_EPSTATUS_BK0RDY) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until OUT transfer is completed.
|
||||
timeout = 300000
|
||||
for (getEPINTFLAG(0) & sam.USB_DEVICE_ENDPOINT_EPINTFLAG_TRCPT0) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
// get data
|
||||
bytesread := uint32((usbEndpointDescriptors[0].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
if bytesread != cdcLineInfoSize {
|
||||
return b, errUSBCDCBytesRead
|
||||
}
|
||||
|
||||
copy(b[:7], udd_ep_out_cache_buffer[0][:7])
|
||||
|
||||
return b, nil
|
||||
}
|
||||
|
||||
func handleEndpointRx(ep uint32) []byte {
|
||||
// get data
|
||||
count := int((usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.Get() >>
|
||||
usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos) & usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask)
|
||||
|
||||
// move to ring buffer
|
||||
buf := make([]byte, count)
|
||||
copy(buf, udd_ep_out_cache_buffer[ep][:])
|
||||
|
||||
// set byte count to zero
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
|
||||
// set multi packet size to 64
|
||||
usbEndpointDescriptors[ep].DeviceDescBank[0].PCKSIZE.SetBits(64 << usb_DEVICE_PCKSIZE_MULTI_PACKET_SIZE_Pos)
|
||||
|
||||
// set ready for next data
|
||||
setEPSTATUSCLR(ep, sam.USB_DEVICE_ENDPOINT_EPSTATUSCLR_BK0RDY)
|
||||
|
||||
return buf[:count]
|
||||
}
|
||||
|
||||
func SendZlp() {
|
||||
usbEndpointDescriptors[0].DeviceDescBank[1].PCKSIZE.ClearBits(usb_DEVICE_PCKSIZE_BYTE_COUNT_Mask << usb_DEVICE_PCKSIZE_BYTE_COUNT_Pos)
|
||||
}
|
||||
|
||||
func epPacketSize(size uint16) uint32 {
|
||||
switch size {
|
||||
case 8:
|
||||
return 0
|
||||
case 16:
|
||||
return 1
|
||||
case 32:
|
||||
return 2
|
||||
case 64:
|
||||
return 3
|
||||
case 128:
|
||||
return 4
|
||||
case 256:
|
||||
return 5
|
||||
case 512:
|
||||
return 6
|
||||
case 1023:
|
||||
return 7
|
||||
default:
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
func getEPCFG(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPCFG.Get()
|
||||
}
|
||||
|
||||
func setEPCFG(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPCFG.Set(val)
|
||||
}
|
||||
|
||||
func setEPSTATUSCLR(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUSCLR.Set(val)
|
||||
}
|
||||
|
||||
func setEPSTATUSSET(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUSSET.Set(val)
|
||||
}
|
||||
|
||||
func getEPSTATUS(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPSTATUS.Get()
|
||||
}
|
||||
|
||||
func getEPINTFLAG(ep uint32) uint8 {
|
||||
return sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTFLAG.Get()
|
||||
}
|
||||
|
||||
func setEPINTFLAG(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTFLAG.Set(val)
|
||||
}
|
||||
|
||||
func setEPINTENCLR(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTENCLR.Set(val)
|
||||
}
|
||||
|
||||
func setEPINTENSET(ep uint32, val uint8) {
|
||||
sam.USB_DEVICE.DEVICE_ENDPOINT[ep].EPINTENSET.Set(val)
|
||||
}
|
||||
+112
-345
@@ -11,143 +11,15 @@ import (
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// USBCDC is the USB CDC aka serial over USB interface on the nRF52840
|
||||
type USBCDC struct {
|
||||
Buffer *RingBuffer
|
||||
interrupt interrupt.Interrupt
|
||||
initcomplete bool
|
||||
TxIdx volatile.Register8
|
||||
waitTxc bool
|
||||
waitTxcRetryCount uint8
|
||||
sent bool
|
||||
}
|
||||
|
||||
const (
|
||||
usbcdcTxSizeMask uint8 = 0x3F
|
||||
usbcdcTxBankMask uint8 = ^usbcdcTxSizeMask
|
||||
usbcdcTxBank1st uint8 = 0x00
|
||||
usbcdcTxBank2nd uint8 = usbcdcTxSizeMask + 1
|
||||
usbcdcTxMaxRetriesAllowed uint8 = 5
|
||||
)
|
||||
|
||||
// Flush flushes buffered data.
|
||||
func (usbcdc *USBCDC) Flush() error {
|
||||
if usbLineInfo.lineState > 0 {
|
||||
idx := usbcdc.TxIdx.Get()
|
||||
sz := idx & usbcdcTxSizeMask
|
||||
bk := idx & usbcdcTxBankMask
|
||||
if 0 < sz {
|
||||
|
||||
if usbcdc.waitTxc {
|
||||
// waiting for the next flush(), because the transmission is not complete
|
||||
usbcdc.waitTxcRetryCount++
|
||||
return nil
|
||||
}
|
||||
usbcdc.waitTxc = true
|
||||
usbcdc.waitTxcRetryCount = 0
|
||||
|
||||
// set the data
|
||||
enterCriticalSection()
|
||||
sendViaEPIn(
|
||||
usb_CDC_ENDPOINT_IN,
|
||||
&udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][bk],
|
||||
int(sz),
|
||||
)
|
||||
if bk == usbcdcTxBank1st {
|
||||
usbcdc.TxIdx.Set(usbcdcTxBank2nd)
|
||||
} else {
|
||||
usbcdc.TxIdx.Set(usbcdcTxBank1st)
|
||||
}
|
||||
|
||||
usbcdc.sent = true
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// WriteByte writes a byte of data to the USB CDC interface.
|
||||
func (usbcdc *USBCDC) WriteByte(c byte) error {
|
||||
// Supposedly to handle problem with Windows USB serial ports?
|
||||
if usbLineInfo.lineState > 0 {
|
||||
ok := false
|
||||
for {
|
||||
mask := interrupt.Disable()
|
||||
|
||||
idx := usbcdc.TxIdx.Get()
|
||||
if (idx & usbcdcTxSizeMask) < usbcdcTxSizeMask {
|
||||
udd_ep_in_cache_buffer[usb_CDC_ENDPOINT_IN][idx] = c
|
||||
usbcdc.TxIdx.Set(idx + 1)
|
||||
ok = true
|
||||
}
|
||||
|
||||
interrupt.Restore(mask)
|
||||
|
||||
if ok {
|
||||
break
|
||||
} else if usbcdcTxMaxRetriesAllowed < usbcdc.waitTxcRetryCount {
|
||||
mask := interrupt.Disable()
|
||||
usbcdc.waitTxc = false
|
||||
usbcdc.waitTxcRetryCount = 0
|
||||
usbcdc.TxIdx.Set(0)
|
||||
usbLineInfo.lineState = 0
|
||||
interrupt.Restore(mask)
|
||||
break
|
||||
} else {
|
||||
mask := interrupt.Disable()
|
||||
if usbcdc.sent {
|
||||
if usbcdc.waitTxc {
|
||||
if !easyDMABusy.HasBits(1) {
|
||||
usbcdc.waitTxc = false
|
||||
usbcdc.Flush()
|
||||
}
|
||||
} else {
|
||||
usbcdc.Flush()
|
||||
}
|
||||
}
|
||||
interrupt.Restore(mask)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) DTR() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_DTR) > 0
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) RTS() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_RTS) > 0
|
||||
}
|
||||
|
||||
var (
|
||||
USB = &_USB
|
||||
_USB = USBCDC{Buffer: NewRingBuffer()}
|
||||
waitHidTxc bool
|
||||
|
||||
usbEndpointDescriptors [8]usbDeviceDescriptor
|
||||
|
||||
udd_ep_in_cache_buffer [7][128]uint8
|
||||
udd_ep_out_cache_buffer [7][128]uint8
|
||||
|
||||
sendOnEP0DATADONE struct {
|
||||
ptr *byte
|
||||
count int
|
||||
ptr *byte
|
||||
count int
|
||||
offset int
|
||||
}
|
||||
isEndpointHalt = false
|
||||
isRemoteWakeUpEnabled = false
|
||||
endPoints = []uint32{usb_ENDPOINT_TYPE_CONTROL,
|
||||
(usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointOut),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointIn)}
|
||||
|
||||
usbConfiguration uint8
|
||||
usbSetInterface uint8
|
||||
usbLineInfo = cdcLineInfo{115200, 0x00, 0x00, 0x08, 0x00}
|
||||
epinen uint32
|
||||
epouten uint32
|
||||
easyDMABusy volatile.Register8
|
||||
epout0data_setlinecoding bool
|
||||
epinen uint32
|
||||
epouten uint32
|
||||
easyDMABusy volatile.Register8
|
||||
)
|
||||
|
||||
// enterCriticalSection is used to protect access to easyDMA - only one thing
|
||||
@@ -167,19 +39,15 @@ func exitCriticalSection() {
|
||||
easyDMABusy.ClearBits(1)
|
||||
}
|
||||
|
||||
// Configure the USB CDC interface. The config is here for compatibility with the UART interface.
|
||||
func (usbcdc *USBCDC) Configure(config UARTConfig) {
|
||||
if usbcdc.initcomplete {
|
||||
return
|
||||
}
|
||||
|
||||
// Configure the USB peripheral. The config is here for compatibility with the UART interface.
|
||||
func (dev *USBDevice) Configure(config UARTConfig) {
|
||||
// Enable IRQ. Make sure this is higher than the SWI2 interrupt handler so
|
||||
// that it is possible to print to the console from a BLE interrupt. You
|
||||
// shouldn't generally do that but it is useful for debugging and panic
|
||||
// logging.
|
||||
usbcdc.interrupt = interrupt.New(nrf.IRQ_USBD, _USB.handleInterrupt)
|
||||
usbcdc.interrupt.SetPriority(0x40) // interrupt priority 2 (lower number means more important)
|
||||
usbcdc.interrupt.Enable()
|
||||
intr := interrupt.New(nrf.IRQ_USBD, handleUSBIRQ)
|
||||
intr.SetPriority(0x40) // interrupt priority 2 (lower number means more important)
|
||||
intr.Enable()
|
||||
|
||||
// enable USB
|
||||
nrf.USBD.ENABLE.Set(1)
|
||||
@@ -194,17 +62,12 @@ func (usbcdc *USBCDC) Configure(config UARTConfig) {
|
||||
)
|
||||
|
||||
nrf.USBD.USBPULLUP.Set(0)
|
||||
|
||||
usbcdc.initcomplete = true
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) handleInterrupt(interrupt.Interrupt) {
|
||||
func handleUSBIRQ(intr interrupt.Interrupt) {
|
||||
if nrf.USBD.EVENTS_SOF.Get() == 1 {
|
||||
nrf.USBD.EVENTS_SOF.Set(0)
|
||||
usbcdc.Flush()
|
||||
if hidCallback != nil && !waitHidTxc {
|
||||
hidCallback()
|
||||
}
|
||||
|
||||
// if you want to blink LED showing traffic, this would be the place...
|
||||
}
|
||||
|
||||
@@ -228,25 +91,30 @@ func (usbcdc *USBCDC) handleInterrupt(interrupt.Interrupt) {
|
||||
if nrf.USBD.EVENTS_EP0DATADONE.Get() == 1 {
|
||||
// done sending packet - either need to send another or enter status stage
|
||||
nrf.USBD.EVENTS_EP0DATADONE.Set(0)
|
||||
if epout0data_setlinecoding {
|
||||
nrf.USBD.EPOUT[0].PTR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
nrf.USBD.EPOUT[0].MAXCNT.Set(64)
|
||||
nrf.USBD.TASKS_STARTEPOUT[0].Set(1)
|
||||
return
|
||||
}
|
||||
if sendOnEP0DATADONE.ptr != nil {
|
||||
// previous data was too big for one packet, so send a second
|
||||
ptr := sendOnEP0DATADONE.ptr
|
||||
count := sendOnEP0DATADONE.count
|
||||
if count > usbEndpointPacketSize {
|
||||
sendOnEP0DATADONE.offset += usbEndpointPacketSize
|
||||
sendOnEP0DATADONE.ptr = &udd_ep_in_cache_buffer[0][sendOnEP0DATADONE.offset]
|
||||
count = usbEndpointPacketSize
|
||||
}
|
||||
sendOnEP0DATADONE.count -= count
|
||||
sendViaEPIn(
|
||||
0,
|
||||
sendOnEP0DATADONE.ptr,
|
||||
sendOnEP0DATADONE.count,
|
||||
ptr,
|
||||
count,
|
||||
)
|
||||
|
||||
// clear, so we know we're done
|
||||
sendOnEP0DATADONE.ptr = nil
|
||||
if sendOnEP0DATADONE.count == 0 {
|
||||
sendOnEP0DATADONE.ptr = nil
|
||||
sendOnEP0DATADONE.offset = 0
|
||||
}
|
||||
} else {
|
||||
// no more data, so set status stage
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
SendZlp() // nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
return
|
||||
}
|
||||
@@ -260,15 +128,13 @@ func (usbcdc *USBCDC) handleInterrupt(interrupt.Interrupt) {
|
||||
setup := parseUSBSetupRegisters()
|
||||
|
||||
ok := false
|
||||
if (setup.bmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
if (setup.BmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
if setup.wIndex == usb_CDC_ACM_INTERFACE {
|
||||
ok = cdcSetup(setup)
|
||||
} else if setup.bmRequestType == usb_SET_REPORT_TYPE && setup.bRequest == usb_SET_IDLE {
|
||||
sendZlp()
|
||||
ok = true
|
||||
// Class Interface Requests
|
||||
if setup.WIndex < uint16(len(callbackUSBSetup)) && callbackUSBSetup[setup.WIndex] != nil {
|
||||
ok = callbackUSBSetup[setup.WIndex](setup)
|
||||
}
|
||||
}
|
||||
|
||||
@@ -288,25 +154,16 @@ func (usbcdc *USBCDC) handleInterrupt(interrupt.Interrupt) {
|
||||
// Check if endpoint has a pending interrupt
|
||||
inDataDone := epDataStatus&(nrf.USBD_EPDATASTATUS_EPIN1<<(i-1)) > 0
|
||||
outDataDone := epDataStatus&(nrf.USBD_EPDATASTATUS_EPOUT1<<(i-1)) > 0
|
||||
if inDataDone || outDataDone {
|
||||
switch i {
|
||||
case usb_CDC_ENDPOINT_OUT:
|
||||
// setup buffer to receive from host
|
||||
if outDataDone {
|
||||
enterCriticalSection()
|
||||
nrf.USBD.EPOUT[i].PTR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[i]))))
|
||||
count := nrf.USBD.SIZE.EPOUT[i].Get()
|
||||
nrf.USBD.EPOUT[i].MAXCNT.Set(count)
|
||||
nrf.USBD.TASKS_STARTEPOUT[i].Set(1)
|
||||
}
|
||||
case usb_CDC_ENDPOINT_IN: //, usb_CDC_ENDPOINT_ACM:
|
||||
if inDataDone {
|
||||
usbcdc.waitTxc = false
|
||||
exitCriticalSection()
|
||||
}
|
||||
case usb_HID_ENDPOINT_IN:
|
||||
waitHidTxc = false
|
||||
if inDataDone {
|
||||
if callbackUSBTx[i] != nil {
|
||||
callbackUSBTx[i]()
|
||||
}
|
||||
} else if outDataDone {
|
||||
enterCriticalSection()
|
||||
nrf.USBD.EPOUT[i].PTR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[i]))))
|
||||
count := nrf.USBD.SIZE.EPOUT[i].Get()
|
||||
nrf.USBD.EPOUT[i].MAXCNT.Set(count)
|
||||
nrf.USBD.TASKS_STARTEPOUT[i].Set(1)
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -315,38 +172,23 @@ func (usbcdc *USBCDC) handleInterrupt(interrupt.Interrupt) {
|
||||
for i := 0; i < len(endPoints); i++ {
|
||||
if nrf.USBD.EVENTS_ENDEPOUT[i].Get() > 0 {
|
||||
nrf.USBD.EVENTS_ENDEPOUT[i].Set(0)
|
||||
if i == 0 && epout0data_setlinecoding {
|
||||
epout0data_setlinecoding = false
|
||||
count := int(nrf.USBD.SIZE.EPOUT[0].Get())
|
||||
if count >= 7 {
|
||||
parseUSBLineInfo(udd_ep_out_cache_buffer[0][:count])
|
||||
checkShouldReset()
|
||||
}
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
if i == usb_CDC_ENDPOINT_OUT {
|
||||
usbcdc.handleEndpoint(uint32(i))
|
||||
buf := handleEndpointRx(uint32(i))
|
||||
if callbackUSBRx[i] != nil {
|
||||
callbackUSBRx[i](buf)
|
||||
}
|
||||
exitCriticalSection()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func parseUSBLineInfo(b []byte) {
|
||||
usbLineInfo.dwDTERate = uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
||||
usbLineInfo.bCharFormat = b[4]
|
||||
usbLineInfo.bParityType = b[5]
|
||||
usbLineInfo.bDataBits = b[6]
|
||||
}
|
||||
|
||||
func parseUSBSetupRegisters() usbSetup {
|
||||
return usbSetup{
|
||||
bmRequestType: uint8(nrf.USBD.BMREQUESTTYPE.Get()),
|
||||
bRequest: uint8(nrf.USBD.BREQUEST.Get()),
|
||||
wValueL: uint8(nrf.USBD.WVALUEL.Get()),
|
||||
wValueH: uint8(nrf.USBD.WVALUEH.Get()),
|
||||
wIndex: uint16((nrf.USBD.WINDEXH.Get() << 8) | nrf.USBD.WINDEXL.Get()),
|
||||
wLength: uint16(((nrf.USBD.WLENGTHH.Get() & 0xff) << 8) | (nrf.USBD.WLENGTHL.Get() & 0xff)),
|
||||
func parseUSBSetupRegisters() USBSetup {
|
||||
return USBSetup{
|
||||
BmRequestType: uint8(nrf.USBD.BMREQUESTTYPE.Get()),
|
||||
BRequest: uint8(nrf.USBD.BREQUEST.Get()),
|
||||
WValueL: uint8(nrf.USBD.WVALUEL.Get()),
|
||||
WValueH: uint8(nrf.USBD.WVALUEH.Get()),
|
||||
WIndex: uint16((nrf.USBD.WINDEXH.Get() << 8) | nrf.USBD.WINDEXL.Get()),
|
||||
WLength: uint16(((nrf.USBD.WLENGTHH.Get() & 0xff) << 8) | (nrf.USBD.WLENGTHL.Get() & 0xff)),
|
||||
}
|
||||
}
|
||||
|
||||
@@ -372,143 +214,17 @@ func initEndpoint(ep, config uint32) {
|
||||
enableEPIn(0)
|
||||
enableEPOut(0)
|
||||
nrf.USBD.INTENSET.Set(nrf.USBD_INTENSET_ENDEPOUT0)
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
SendZlp() // nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
}
|
||||
|
||||
func handleStandardSetup(setup usbSetup) bool {
|
||||
switch setup.bRequest {
|
||||
case usb_GET_STATUS:
|
||||
buf := []byte{0, 0}
|
||||
|
||||
if setup.bmRequestType != 0 { // endpoint
|
||||
if isEndpointHalt {
|
||||
buf[0] = 1
|
||||
}
|
||||
}
|
||||
|
||||
sendUSBPacket(0, buf, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_CLEAR_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = false
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = false
|
||||
}
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
return true
|
||||
|
||||
case usb_SET_FEATURE:
|
||||
if setup.wValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = true
|
||||
} else if setup.wValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = true
|
||||
}
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
return true
|
||||
|
||||
case usb_SET_ADDRESS:
|
||||
// nrf USBD handles this
|
||||
return true
|
||||
|
||||
case usb_GET_DESCRIPTOR:
|
||||
sendDescriptor(setup)
|
||||
return true
|
||||
|
||||
case usb_SET_DESCRIPTOR:
|
||||
return false
|
||||
|
||||
case usb_GET_CONFIGURATION:
|
||||
buff := []byte{usbConfiguration}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_CONFIGURATION:
|
||||
if setup.bmRequestType&usb_REQUEST_RECIPIENT == usb_REQUEST_DEVICE {
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
for i := 1; i < len(endPoints); i++ {
|
||||
initEndpoint(uint32(i), endPoints[i])
|
||||
}
|
||||
|
||||
// Enable interrupt for HID messages from host
|
||||
if hidCallback != nil {
|
||||
nrf.USBD.INTENSET.Set(nrf.USBD_INTENSET_ENDEPOUT0 << usb_HID_ENDPOINT_IN)
|
||||
}
|
||||
|
||||
usbConfiguration = setup.wValueL
|
||||
return true
|
||||
} else {
|
||||
return false
|
||||
}
|
||||
|
||||
case usb_GET_INTERFACE:
|
||||
buff := []byte{usbSetInterface}
|
||||
sendUSBPacket(0, buff, setup.wLength)
|
||||
return true
|
||||
|
||||
case usb_SET_INTERFACE:
|
||||
usbSetInterface = setup.wValueL
|
||||
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
return true
|
||||
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
func cdcSetup(setup usbSetup) bool {
|
||||
if setup.bmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_GET_LINE_CODING {
|
||||
var b [cdcLineInfoSize]byte
|
||||
b[0] = byte(usbLineInfo.dwDTERate)
|
||||
b[1] = byte(usbLineInfo.dwDTERate >> 8)
|
||||
b[2] = byte(usbLineInfo.dwDTERate >> 16)
|
||||
b[3] = byte(usbLineInfo.dwDTERate >> 24)
|
||||
b[4] = byte(usbLineInfo.bCharFormat)
|
||||
b[5] = byte(usbLineInfo.bParityType)
|
||||
b[6] = byte(usbLineInfo.bDataBits)
|
||||
|
||||
sendUSBPacket(0, b[:], setup.wLength)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if setup.bmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
|
||||
if setup.bRequest == usb_CDC_SET_LINE_CODING {
|
||||
epout0data_setlinecoding = true
|
||||
nrf.USBD.TASKS_EP0RCVOUT.Set(1)
|
||||
return true
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
usbLineInfo.lineState = setup.wValueL
|
||||
checkShouldReset()
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
|
||||
if setup.bRequest == usb_CDC_SEND_BREAK {
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// SendUSBHIDPacket sends a packet for USBHID (interrupt / in).
|
||||
func SendUSBHIDPacket(ep uint32, data []byte) bool {
|
||||
if waitHidTxc {
|
||||
return false
|
||||
}
|
||||
|
||||
// SendUSBInPacket sends a packet for USBHID (interrupt in / bulk in).
|
||||
func SendUSBInPacket(ep uint32, data []byte) bool {
|
||||
sendUSBPacket(ep, data, 0)
|
||||
|
||||
// clear transfer complete flag
|
||||
nrf.USBD.INTENCLR.Set(nrf.USBD_INTENCLR_ENDEPOUT0 << 4)
|
||||
|
||||
waitHidTxc = true
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
@@ -520,7 +236,8 @@ func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
}
|
||||
copy(udd_ep_in_cache_buffer[ep][:], data[:count])
|
||||
if ep == 0 && count > usbEndpointPacketSize {
|
||||
sendOnEP0DATADONE.ptr = &udd_ep_in_cache_buffer[ep][usbEndpointPacketSize]
|
||||
sendOnEP0DATADONE.offset = usbEndpointPacketSize
|
||||
sendOnEP0DATADONE.ptr = &udd_ep_in_cache_buffer[ep][sendOnEP0DATADONE.offset]
|
||||
sendOnEP0DATADONE.count = count - usbEndpointPacketSize
|
||||
count = usbEndpointPacketSize
|
||||
}
|
||||
@@ -531,20 +248,21 @@ func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
)
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) handleEndpoint(ep uint32) {
|
||||
func handleEndpointRx(ep uint32) []byte {
|
||||
// get data
|
||||
count := int(nrf.USBD.EPOUT[ep].AMOUNT.Get())
|
||||
|
||||
// move to ring buffer
|
||||
for i := 0; i < count; i++ {
|
||||
usbcdc.Receive(byte(udd_ep_out_cache_buffer[ep][i]))
|
||||
}
|
||||
buf := make([]byte, count)
|
||||
copy(buf, udd_ep_out_cache_buffer[ep][:])
|
||||
|
||||
// set ready for next data
|
||||
nrf.USBD.SIZE.EPOUT[ep].Set(0)
|
||||
|
||||
return buf[:count]
|
||||
}
|
||||
|
||||
func sendZlp() {
|
||||
func SendZlp() {
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
}
|
||||
|
||||
@@ -565,3 +283,52 @@ func enableEPIn(ep uint32) {
|
||||
epinen = epinen | (nrf.USBD_EPINEN_IN0 << ep)
|
||||
nrf.USBD.EPINEN.Set(epinen)
|
||||
}
|
||||
|
||||
func handleUSBSetAddress(setup USBSetup) bool {
|
||||
// nrf USBD handles this
|
||||
return true
|
||||
}
|
||||
|
||||
func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
|
||||
nrf.USBD.TASKS_EP0RCVOUT.Set(1)
|
||||
|
||||
nrf.USBD.EPOUT[0].PTR.Set(uint32(uintptr(unsafe.Pointer(&udd_ep_out_cache_buffer[0]))))
|
||||
nrf.USBD.EPOUT[0].MAXCNT.Set(64)
|
||||
|
||||
timeout := 300000
|
||||
count := 0
|
||||
for {
|
||||
if nrf.USBD.EVENTS_EP0DATADONE.Get() == 1 {
|
||||
nrf.USBD.EVENTS_EP0DATADONE.Set(0)
|
||||
count = int(nrf.USBD.SIZE.EPOUT[0].Get())
|
||||
nrf.USBD.TASKS_STARTEPOUT[0].Set(1)
|
||||
break
|
||||
}
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
timeout = 300000
|
||||
for {
|
||||
if nrf.USBD.EVENTS_ENDEPOUT[0].Get() == 1 {
|
||||
nrf.USBD.EVENTS_ENDEPOUT[0].Set(0)
|
||||
break
|
||||
}
|
||||
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return b, errUSBCDCReadTimeout
|
||||
}
|
||||
}
|
||||
|
||||
nrf.USBD.TASKS_EP0STATUS.Set(1)
|
||||
nrf.USBD.TASKS_EP0RCVOUT.Set(0)
|
||||
|
||||
copy(b[:7], udd_ep_out_cache_buffer[0][:count])
|
||||
|
||||
return b, nil
|
||||
}
|
||||
|
||||
@@ -14,12 +14,10 @@ const (
|
||||
DFU_MAGIC_OTA_RESET = 0xA8
|
||||
)
|
||||
|
||||
// checkShouldReset is called by the USB-CDC implementation to check whether to
|
||||
// reset into the bootloader/OTA and if so, resets the chip appropriately.
|
||||
func checkShouldReset() {
|
||||
if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
|
||||
EnterUF2Bootloader()
|
||||
}
|
||||
// ResetProcessor should perform a system reset in preparation
|
||||
// to switch to the bootloader to flash new firmware.
|
||||
func ResetProcessor() {
|
||||
EnterUF2Bootloader()
|
||||
}
|
||||
|
||||
// EnterSerialBootloader resets the chip into the serial bootloader. After
|
||||
|
||||
@@ -0,0 +1,523 @@
|
||||
//go:build rp2040
|
||||
// +build rp2040
|
||||
|
||||
package machine
|
||||
|
||||
import (
|
||||
"device/arm"
|
||||
"device/rp"
|
||||
"runtime/interrupt"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
// these are rp2040 specific.
|
||||
)
|
||||
|
||||
var (
|
||||
sendOnEP0DATADONE struct {
|
||||
offset int
|
||||
data []byte
|
||||
pid uint32
|
||||
}
|
||||
)
|
||||
|
||||
// Configure the USB peripheral. The config is here for compatibility with the UART interface.
|
||||
func (dev *USBDevice) Configure(config UARTConfig) {
|
||||
//// Clear any previous state in dpram just in case
|
||||
//memset(usb_dpram, 0, sizeof(*usb_dpram)); // <1>
|
||||
usbDPSRAM.clear()
|
||||
|
||||
//// Enable USB interrupt at processor
|
||||
//irq_set_enabled(USBCTRL_IRQ, true);
|
||||
rp.USBCTRL_REGS.INTE.Set(0)
|
||||
intr := interrupt.New(rp.IRQ_USBCTRL_IRQ, handleUSBIRQ)
|
||||
intr.SetPriority(0x00)
|
||||
intr.Enable()
|
||||
irqSet(rp.IRQ_USBCTRL_IRQ, true)
|
||||
|
||||
//// Mux the controller to the onboard usb phy
|
||||
//usb_hw->muxing = USB_USB_MUXING_TO_PHY_BITS | USB_USB_MUXING_SOFTCON_BITS;
|
||||
rp.USBCTRL_REGS.USB_MUXING.Set(rp.USBCTRL_REGS_USB_MUXING_TO_PHY | rp.USBCTRL_REGS_USB_MUXING_SOFTCON)
|
||||
|
||||
//// Force VBUS detect so the device thinks it is plugged into a host
|
||||
//usb_hw->pwr = USB_USB_PWR_VBUS_DETECT_BITS | USB_USB_PWR_VBUS_DETECT_OVERRIDE_EN_BITS;
|
||||
rp.USBCTRL_REGS.USB_PWR.Set(rp.USBCTRL_REGS_USB_PWR_VBUS_DETECT | rp.USBCTRL_REGS_USB_PWR_VBUS_DETECT_OVERRIDE_EN)
|
||||
|
||||
//// Enable the USB controller in device mode.
|
||||
//usb_hw->main_ctrl = USB_MAIN_CTRL_CONTROLLER_EN_BITS;
|
||||
rp.USBCTRL_REGS.MAIN_CTRL.Set(rp.USBCTRL_REGS_MAIN_CTRL_CONTROLLER_EN)
|
||||
|
||||
//// Enable an interrupt per EP0 transaction
|
||||
//usb_hw->sie_ctrl = USB_SIE_CTRL_EP0_INT_1BUF_BITS; // <2>
|
||||
rp.USBCTRL_REGS.SIE_CTRL.Set(rp.USBCTRL_REGS_SIE_CTRL_EP0_INT_1BUF)
|
||||
|
||||
//// Enable interrupts for when a buffer is done, when the bus is reset,
|
||||
//// and when a setup packet is received
|
||||
//usb_hw->inte = USB_INTS_BUFF_STATUS_BITS |
|
||||
// USB_INTS_BUS_RESET_BITS |
|
||||
// USB_INTS_SETUP_REQ_BITS;
|
||||
rp.USBCTRL_REGS.INTE.Set(rp.USBCTRL_REGS_INTE_BUFF_STATUS |
|
||||
rp.USBCTRL_REGS_INTE_BUS_RESET |
|
||||
rp.USBCTRL_REGS_INTE_SETUP_REQ)
|
||||
|
||||
//// Set up endpoints (endpoint control registers)
|
||||
//// described by device configuration
|
||||
//usb_setup_endpoints();
|
||||
// void usb_setup_endpoints() {
|
||||
// const struct usb_endpoint_configuration *endpoints = dev_config.endpoints;
|
||||
// for (int i = 0; i < USB_NUM_ENDPOINTS; i++) {
|
||||
// if (endpoints[i].descriptor && endpoints[i].handler) {
|
||||
// usb_setup_endpoint(&endpoints[i]);
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// void usb_setup_endpoint(const struct usb_endpoint_configuration *ep) {
|
||||
// printf("Set up endpoint 0x%x with buffer address 0x%p\n", ep->descriptor->bEndpointAddress, ep->data_buffer);
|
||||
//
|
||||
// // EP0 doesn't have one so return if that is the case
|
||||
// if (!ep->endpoint_control) {
|
||||
// return;
|
||||
// }
|
||||
//
|
||||
// // Get the data buffer as an offset of the USB controller's DPRAM
|
||||
// uint32_t dpram_offset = usb_buffer_offset(ep->data_buffer);
|
||||
// uint32_t reg = EP_CTRL_ENABLE_BITS
|
||||
// | EP_CTRL_INTERRUPT_PER_BUFFER
|
||||
// | (ep->descriptor->bmAttributes << EP_CTRL_BUFFER_TYPE_LSB)
|
||||
// | dpram_offset;
|
||||
// *ep->endpoint_control = reg;
|
||||
// }
|
||||
|
||||
//// Present full speed device by enabling pull up on DP
|
||||
//usb_hw_set->sie_ctrl = USB_SIE_CTRL_PULLUP_EN_BITS;
|
||||
rp.USBCTRL_REGS.SIE_CTRL.SetBits(rp.USBCTRL_REGS_SIE_CTRL_PULLUP_EN)
|
||||
|
||||
// 追加
|
||||
val := uint32(0)
|
||||
val |= 0x00000400
|
||||
usbDPSRAM.EP0OutBufferControl = USBBufferControlRegister(val)
|
||||
}
|
||||
|
||||
func handleUSBIRQ(intr interrupt.Interrupt) {
|
||||
status := rp.USBCTRL_REGS.INTS.Get()
|
||||
|
||||
// setup
|
||||
//rp.USBCTRL_REGS.SIE_STATUS.Set(0xFFFFFFFF)
|
||||
|
||||
//if false {
|
||||
// // SOF
|
||||
// x := rp.USBCTRL_REGS.SOF_RD.Get()
|
||||
//}
|
||||
|
||||
// void isr_usbctrl(void) {
|
||||
// // USB interrupt handler
|
||||
// uint32_t status = usb_hw->ints;
|
||||
// uint32_t handled = 0;
|
||||
|
||||
// // Setup packet received
|
||||
// if (status & USB_INTS_SETUP_REQ_BITS) {
|
||||
// handled |= USB_INTS_SETUP_REQ_BITS;
|
||||
// usb_hw_clear->sie_status = USB_SIE_STATUS_SETUP_REC_BITS;
|
||||
// usb_handle_setup_packet();
|
||||
// }
|
||||
// /// \end::isr_setup_packet[]
|
||||
if (status & rp.USBCTRL_REGS_INTS_SETUP_REQ) > 0 {
|
||||
rp.USBCTRL_REGS.SIE_STATUS.Set(rp.USBCTRL_REGS_SIE_STATUS_SETUP_REC)
|
||||
setup := newUSBSetup(usbDPSRAM.Setup[:])
|
||||
|
||||
ok := false
|
||||
if (setup.BmRequestType & usb_REQUEST_TYPE) == usb_REQUEST_STANDARD {
|
||||
// Standard Requests
|
||||
ok = handleStandardSetup(setup)
|
||||
} else {
|
||||
// Class Interface Requests
|
||||
if setup.WIndex < uint16(len(callbackUSBSetup)) && callbackUSBSetup[setup.WIndex] != nil {
|
||||
ok = callbackUSBSetup[setup.WIndex](setup)
|
||||
}
|
||||
}
|
||||
|
||||
if ok {
|
||||
// set Bank1 ready
|
||||
//setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPSTATUSSET_BK1RDY)
|
||||
} else {
|
||||
// Stall endpoint
|
||||
//setEPSTATUSSET(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
}
|
||||
|
||||
//if getEPINTFLAG(0)&sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1 > 0 {
|
||||
// // ack the stall
|
||||
// setEPINTFLAG(0, sam.USB_DEVICE_ENDPOINT_EPINTFLAG_STALL1)
|
||||
|
||||
// // clear stall request
|
||||
// setEPINTENCLR(0, sam.USB_DEVICE_ENDPOINT_EPINTENCLR_STALL1)
|
||||
//}
|
||||
}
|
||||
|
||||
// // Buffer status, one or more buffers have completed
|
||||
// if (status & USB_INTS_BUFF_STATUS_BITS) {
|
||||
// handled |= USB_INTS_BUFF_STATUS_BITS;
|
||||
// usb_handle_buff_status();
|
||||
// }
|
||||
if (status & rp.USBCTRL_REGS_INTS_BUFF_STATUS) > 0 {
|
||||
if sendOnEP0DATADONE.offset > 0 {
|
||||
ep := uint32(0)
|
||||
data := sendOnEP0DATADONE.data
|
||||
count := len(data) - sendOnEP0DATADONE.offset
|
||||
if ep == 0 && count > usbEndpointPacketSize {
|
||||
count = usbEndpointPacketSize
|
||||
}
|
||||
sendViaEPIn(ep, data[sendOnEP0DATADONE.offset:], count, 0)
|
||||
sendOnEP0DATADONE.offset += count
|
||||
if sendOnEP0DATADONE.offset == len(data) {
|
||||
sendOnEP0DATADONE.offset = 0
|
||||
}
|
||||
}
|
||||
//s2 := rp.USBCTRL_REGS.BUFF_STATUS.Get()
|
||||
//if (s2 & 0x00000001) > 0 {
|
||||
// // EP0_IN
|
||||
//} else if (s2 & 0x00000002) > 0 {
|
||||
// // EP0_OUT
|
||||
// //sendUSBPacket(0, []byte{}, 0)
|
||||
//}
|
||||
rp.USBCTRL_REGS.BUFF_STATUS.Set(0xFFFFFFFF)
|
||||
}
|
||||
|
||||
// // Bus is reset
|
||||
// if (status & USB_INTS_BUS_RESET_BITS) {
|
||||
// printf("BUS RESET\n");
|
||||
// handled |= USB_INTS_BUS_RESET_BITS;
|
||||
// usb_hw_clear->sie_status = USB_SIE_STATUS_BUS_RESET_BITS;
|
||||
// usb_bus_reset();
|
||||
// }
|
||||
// void usb_bus_reset(void) {
|
||||
// // Set address back to 0
|
||||
// dev_addr = 0;
|
||||
// should_set_address = false;
|
||||
// usb_hw->dev_addr_ctrl = 0;
|
||||
// configured = false;
|
||||
// }
|
||||
if (status & rp.USBCTRL_REGS_INTS_BUS_RESET) > 0 {
|
||||
rp.USBCTRL_REGS.SIE_STATUS.Set(rp.USBCTRL_REGS_SIE_STATUS_BUS_RESET)
|
||||
}
|
||||
|
||||
//
|
||||
// if (status ^ handled) {
|
||||
// panic("Unhandled IRQ 0x%x\n", (uint) (status ^ handled));
|
||||
// }
|
||||
// }
|
||||
}
|
||||
|
||||
func initEndpoint(ep, config uint32) {
|
||||
if ep == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
val := uint32(0x80000000) | uint32(0x20000000)
|
||||
offset := (ep-1)*64 + 0x180
|
||||
val |= offset
|
||||
|
||||
switch config {
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn:
|
||||
val |= 0x0C000000
|
||||
// ep1 in
|
||||
usbDPSRAM.EP1InControl = USBEndpointControlRegister(val)
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointOut:
|
||||
val |= 0x08000000
|
||||
// ep2 out
|
||||
usbDPSRAM.EP2OutControl = USBEndpointControlRegister(val)
|
||||
case usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointOut:
|
||||
// TODO: not really anything, seems like...
|
||||
|
||||
case usb_ENDPOINT_TYPE_BULK | usbEndpointIn:
|
||||
val |= 0x08000000
|
||||
usbDPSRAM.EP3InControl = USBEndpointControlRegister(val)
|
||||
// ep3 in
|
||||
case usb_ENDPOINT_TYPE_CONTROL:
|
||||
// skip
|
||||
}
|
||||
}
|
||||
|
||||
func handleUSBSetAddress(setup USBSetup) bool {
|
||||
// setup.BmRequestType, setup.BRequest, setup.WValueL, setup.WValueH, setup.WIndex, setup.WLength)
|
||||
sendUSBPacket(0, []byte{}, 0)
|
||||
|
||||
// last, set the device address to that requested by host
|
||||
// wait for transfer to complete
|
||||
timeout := 3000
|
||||
rp.USBCTRL_REGS.SIE_STATUS.Set(rp.USBCTRL_REGS_SIE_STATUS_ACK_REC)
|
||||
for (rp.USBCTRL_REGS.SIE_STATUS.Get() & rp.USBCTRL_REGS_SIE_STATUS_ACK_REC) == 0 {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
rp.USBCTRL_REGS.ADDR_ENDP.Set(uint32(setup.WValueL) & rp.USBCTRL_REGS_ADDR_ENDP_ADDRESS_Msk)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// SendUSBInPacket sends a packet for USB (interrupt in / bulk in).
|
||||
func SendUSBInPacket(ep uint32, data []byte) bool {
|
||||
sendUSBPacket(ep, data, 0)
|
||||
return true
|
||||
}
|
||||
|
||||
//go:noinline
|
||||
func sendUSBPacket(ep uint32, data []byte, maxsize uint16) {
|
||||
count := len(data)
|
||||
if 0 < int(maxsize) && int(maxsize) < count {
|
||||
count = int(maxsize)
|
||||
}
|
||||
|
||||
if ep == 0 {
|
||||
if count > usbEndpointPacketSize {
|
||||
count = usbEndpointPacketSize
|
||||
|
||||
sendOnEP0DATADONE.offset = count
|
||||
sendOnEP0DATADONE.data = data
|
||||
} else {
|
||||
sendOnEP0DATADONE.offset = 0
|
||||
}
|
||||
}
|
||||
|
||||
sendViaEPIn(ep, data, count, 1)
|
||||
}
|
||||
|
||||
func ReceiveUSBControlPacket() ([cdcLineInfoSize]byte, error) {
|
||||
var b [cdcLineInfoSize]byte
|
||||
return b, nil
|
||||
}
|
||||
|
||||
func handleEndpointRx(ep uint32) []byte {
|
||||
return nil
|
||||
}
|
||||
|
||||
func SendZlp() {
|
||||
sendUSBPacket(0, []byte{}, 0)
|
||||
}
|
||||
|
||||
var ep3data0 = true
|
||||
|
||||
func sendViaEPIn(ep uint32, data []byte, count int, pid int) {
|
||||
// void usb_start_transfer(struct usb_endpoint_configuration *ep, uint8_t *buf, uint16_t len) {
|
||||
// // We are asserting that the length is <= 64 bytes for simplicity of the example.
|
||||
// // For multi packet transfers see the tinyusb port.
|
||||
// assert(len <= 64);
|
||||
//
|
||||
// printf("Start transfer of len %d on ep addr 0x%x\n", len, ep->descriptor->bEndpointAddress);
|
||||
//
|
||||
// // Prepare buffer control register value
|
||||
// uint32_t val = len | USB_BUF_CTRL_AVAIL;
|
||||
val := uint32(count) | 0x00000400
|
||||
|
||||
// if (ep_is_tx(ep)) {
|
||||
// // Need to copy the data from the user buffer to the usb memory
|
||||
// memcpy((void *) ep->data_buffer, (void *) buf, len);
|
||||
// DATA0 or DATA1
|
||||
if ep == 3 {
|
||||
if ep3data0 {
|
||||
val |= 0x00002000
|
||||
}
|
||||
ep3data0 = !ep3data0
|
||||
} else if pid == 1 {
|
||||
val |= 0x00002000
|
||||
}
|
||||
|
||||
// // Mark as full
|
||||
// val |= USB_BUF_CTRL_FULL;
|
||||
val |= 0x00008000
|
||||
|
||||
// }
|
||||
// // Set pid and flip for next transfer
|
||||
// val |= ep->next_pid ? USB_BUF_CTRL_DATA1_PID : USB_BUF_CTRL_DATA0_PID;
|
||||
// ep->next_pid ^= 1u;
|
||||
//
|
||||
// *ep->buffer_control = val;
|
||||
switch ep & 0x7F {
|
||||
case 0:
|
||||
copy(usbDPSRAM.EP0Buffer0[:], data[:count])
|
||||
usbDPSRAM.EP0InBufferControl = USBBufferControlRegister(val)
|
||||
case 1:
|
||||
copy(usbDPSRAM.EP1Buffer[:], data[:count])
|
||||
usbDPSRAM.EP1InBufferControl = USBBufferControlRegister(val)
|
||||
case 2:
|
||||
usbDPSRAM.EP2OutBufferControl = USBBufferControlRegister(val)
|
||||
case 3:
|
||||
copy(usbDPSRAM.EP3Buffer[:], data[:count])
|
||||
usbDPSRAM.EP3InBufferControl = USBBufferControlRegister(val)
|
||||
default:
|
||||
}
|
||||
|
||||
// }
|
||||
}
|
||||
|
||||
// ResetProcessor should perform a system reset in preparation
|
||||
// to switch to the bootloader to flash new firmware.
|
||||
func ResetProcessor() {
|
||||
arm.DisableInterrupts()
|
||||
|
||||
//// Perform magic reset into bootloader, as mentioned in
|
||||
//// https://github.com/arduino/ArduinoCore-samd/issues/197
|
||||
//*(*uint32)(unsafe.Pointer(uintptr(0x20000000 + HSRAM_SIZE - 4))) = RESET_MAGIC_VALUE
|
||||
|
||||
arm.SystemReset()
|
||||
}
|
||||
|
||||
type USBDPSRAM struct {
|
||||
Setup [8]byte
|
||||
|
||||
EP1InControl USBEndpointControlRegister // 0x0008
|
||||
EP1OutControl USBEndpointControlRegister // 0x000c
|
||||
EP2InControl USBEndpointControlRegister // 0x0010
|
||||
EP2OutControl USBEndpointControlRegister // 0x0014
|
||||
EP3InControl USBEndpointControlRegister // 0x0018
|
||||
EP3OutControl USBEndpointControlRegister // 0x001c
|
||||
EP4InControl USBEndpointControlRegister // 0x0020
|
||||
EP4OutControl USBEndpointControlRegister // 0x0024
|
||||
EP5InControl USBEndpointControlRegister // 0x0028
|
||||
EP5OutControl USBEndpointControlRegister // 0x002c
|
||||
EP6InControl USBEndpointControlRegister // 0x0030
|
||||
EP6OutControl USBEndpointControlRegister // 0x0034
|
||||
EP7InControl USBEndpointControlRegister // 0x0038
|
||||
EP7OutControl USBEndpointControlRegister // 0x003c
|
||||
EP8InControl USBEndpointControlRegister // 0x0040
|
||||
EP8OutControl USBEndpointControlRegister // 0x0044
|
||||
EP9InControl USBEndpointControlRegister // 0x0048
|
||||
EP9OutControl USBEndpointControlRegister // 0x004c
|
||||
EP10InControl USBEndpointControlRegister // 0x0050
|
||||
EP10OutControl USBEndpointControlRegister // 0x0054
|
||||
EP11InControl USBEndpointControlRegister // 0x0058
|
||||
EP11OutControl USBEndpointControlRegister // 0x005c
|
||||
EP12InControl USBEndpointControlRegister // 0x0060
|
||||
EP12OutControl USBEndpointControlRegister // 0x0064
|
||||
EP13InControl USBEndpointControlRegister // 0x0068
|
||||
EP13OutControl USBEndpointControlRegister // 0x006c
|
||||
EP14InControl USBEndpointControlRegister // 0x0070
|
||||
EP14OutControl USBEndpointControlRegister // 0x0074
|
||||
EP15InControl USBEndpointControlRegister // 0x0078
|
||||
EP15OutControl USBEndpointControlRegister // 0x007c
|
||||
|
||||
EP0InBufferControl USBBufferControlRegister // 0x0080
|
||||
EP0OutBufferControl USBBufferControlRegister // 0x0084
|
||||
EP1InBufferControl USBBufferControlRegister // 0x0088
|
||||
EP1OutBufferControl USBBufferControlRegister // 0x008c
|
||||
EP2InBufferControl USBBufferControlRegister // 0x0090
|
||||
EP2OutBufferControl USBBufferControlRegister // 0x0094
|
||||
EP3InBufferControl USBBufferControlRegister // 0x0098
|
||||
EP3OutBufferControl USBBufferControlRegister // 0x009c
|
||||
EP4InBufferControl USBBufferControlRegister // 0x00a0
|
||||
EP4OutBufferControl USBBufferControlRegister // 0x00a4
|
||||
EP5InBufferControl USBBufferControlRegister // 0x00a8
|
||||
EP5OutBufferControl USBBufferControlRegister // 0x00ac
|
||||
EP6InBufferControl USBBufferControlRegister // 0x00b0
|
||||
EP6OutBufferControl USBBufferControlRegister // 0x00b4
|
||||
EP7InBufferControl USBBufferControlRegister // 0x00b8
|
||||
EP7OutBufferControl USBBufferControlRegister // 0x00bc
|
||||
EP8InBufferControl USBBufferControlRegister // 0x00c0
|
||||
EP8OutBufferControl USBBufferControlRegister // 0x00c4
|
||||
EP9InBufferControl USBBufferControlRegister // 0x00c8
|
||||
EP9OutBufferControl USBBufferControlRegister // 0x00cc
|
||||
EP10InBufferControl USBBufferControlRegister // 0x00d0
|
||||
EP10OutBufferControl USBBufferControlRegister // 0x00d4
|
||||
EP11InBufferControl USBBufferControlRegister // 0x00d8
|
||||
EP11OutBufferControl USBBufferControlRegister // 0x00dc
|
||||
EP12InBufferControl USBBufferControlRegister // 0x00e0
|
||||
EP12OutBufferControl USBBufferControlRegister // 0x00e4
|
||||
EP13InBufferControl USBBufferControlRegister // 0x00e8
|
||||
EP13OutBufferControl USBBufferControlRegister // 0x00ec
|
||||
EP14InBufferControl USBBufferControlRegister // 0x00f0
|
||||
EP14OutBufferControl USBBufferControlRegister // 0x00f4
|
||||
EP15InBufferControl USBBufferControlRegister // 0x00f8
|
||||
EP15OutBufferControl USBBufferControlRegister // 0x00fc
|
||||
|
||||
// offset : 0x100
|
||||
EP0Buffer0 [64]byte
|
||||
EP0Buffer1 [64]byte
|
||||
|
||||
// offset : 0x180 ..
|
||||
EP1Buffer [64]byte
|
||||
EP2Buffer [64]byte
|
||||
EP3Buffer [64]byte
|
||||
EP4Buffer [64]byte
|
||||
EP5Buffer [64]byte
|
||||
EP6Buffer [64]byte
|
||||
EP7Buffer [64]byte
|
||||
}
|
||||
|
||||
type USBEndpointControlRegister uint32
|
||||
type USBBufferControlRegister uint32
|
||||
|
||||
var usbDPSRAM = (*USBDPSRAM)(unsafe.Pointer(uintptr(0x50100000)))
|
||||
|
||||
func (d *USBDPSRAM) clear() {
|
||||
for i := range d.Setup {
|
||||
d.Setup[i] = 0
|
||||
}
|
||||
|
||||
d.EP1InControl = 0
|
||||
d.EP1OutControl = 0
|
||||
d.EP2InControl = 0
|
||||
d.EP2OutControl = 0
|
||||
d.EP3InControl = 0
|
||||
d.EP3OutControl = 0
|
||||
d.EP4InControl = 0
|
||||
d.EP4OutControl = 0
|
||||
d.EP5InControl = 0
|
||||
d.EP5OutControl = 0
|
||||
d.EP6InControl = 0
|
||||
d.EP6OutControl = 0
|
||||
d.EP7InControl = 0
|
||||
d.EP7OutControl = 0
|
||||
d.EP8InControl = 0
|
||||
d.EP8OutControl = 0
|
||||
d.EP9InControl = 0
|
||||
d.EP9OutControl = 0
|
||||
d.EP10InControl = 0
|
||||
d.EP10OutControl = 0
|
||||
d.EP11InControl = 0
|
||||
d.EP11OutControl = 0
|
||||
d.EP12InControl = 0
|
||||
d.EP12OutControl = 0
|
||||
d.EP13InControl = 0
|
||||
d.EP13OutControl = 0
|
||||
d.EP14InControl = 0
|
||||
d.EP14OutControl = 0
|
||||
d.EP15InControl = 0
|
||||
d.EP15OutControl = 0
|
||||
|
||||
d.EP0InBufferControl = 0
|
||||
d.EP0OutBufferControl = 0
|
||||
d.EP1InBufferControl = 0
|
||||
d.EP1OutBufferControl = 0
|
||||
d.EP2InBufferControl = 0
|
||||
d.EP2OutBufferControl = 0
|
||||
d.EP3InBufferControl = 0
|
||||
d.EP3OutBufferControl = 0
|
||||
d.EP4InBufferControl = 0
|
||||
d.EP4OutBufferControl = 0
|
||||
d.EP5InBufferControl = 0
|
||||
d.EP5OutBufferControl = 0
|
||||
d.EP6InBufferControl = 0
|
||||
d.EP6OutBufferControl = 0
|
||||
d.EP7InBufferControl = 0
|
||||
d.EP7OutBufferControl = 0
|
||||
d.EP8InBufferControl = 0
|
||||
d.EP8OutBufferControl = 0
|
||||
d.EP9InBufferControl = 0
|
||||
d.EP9OutBufferControl = 0
|
||||
d.EP10InBufferControl = 0
|
||||
d.EP10OutBufferControl = 0
|
||||
d.EP11InBufferControl = 0
|
||||
d.EP11OutBufferControl = 0
|
||||
d.EP12InBufferControl = 0
|
||||
d.EP12OutBufferControl = 0
|
||||
d.EP13InBufferControl = 0
|
||||
d.EP13OutBufferControl = 0
|
||||
d.EP14InBufferControl = 0
|
||||
d.EP14OutBufferControl = 0
|
||||
d.EP15InBufferControl = 0
|
||||
d.EP15OutBufferControl = 0
|
||||
}
|
||||
@@ -3,5 +3,17 @@
|
||||
|
||||
package machine
|
||||
|
||||
type Serialer interface {
|
||||
WriteByte(c byte) error
|
||||
Write(data []byte) (n int, err error)
|
||||
Configure(config UARTConfig)
|
||||
Configured() bool
|
||||
Buffered() int
|
||||
ReadByte() (byte, error)
|
||||
}
|
||||
|
||||
//go:linkname NewUSBCDC machine/usb/cdc.New
|
||||
func NewUSBCDC() Serialer
|
||||
|
||||
// Serial is implemented via USB (USB-CDC).
|
||||
var Serial = USB
|
||||
var Serial = NewUSBCDC()
|
||||
|
||||
+181
-144
@@ -1,5 +1,5 @@
|
||||
//go:build sam || nrf52840
|
||||
// +build sam nrf52840
|
||||
//go:build sam || nrf52840 || rp2040
|
||||
// +build sam nrf52840 rp2040
|
||||
|
||||
package machine
|
||||
|
||||
@@ -8,24 +8,14 @@ import (
|
||||
"runtime/volatile"
|
||||
)
|
||||
|
||||
var usbDescriptor = descriptorCDC
|
||||
type USBDevice struct {
|
||||
}
|
||||
|
||||
var (
|
||||
errUSBCDCBufferEmpty = errors.New("USB-CDC buffer empty")
|
||||
errUSBCDCWriteByteTimeout = errors.New("USB-CDC write byte timeout")
|
||||
errUSBCDCReadTimeout = errors.New("USB-CDC read timeout")
|
||||
errUSBCDCBytesRead = errors.New("USB-CDC invalid number of bytes read")
|
||||
USB = &USBDevice{}
|
||||
)
|
||||
|
||||
const cdcLineInfoSize = 7
|
||||
|
||||
type cdcLineInfo struct {
|
||||
dwDTERate uint32
|
||||
bCharFormat uint8
|
||||
bParityType uint8
|
||||
bDataBits uint8
|
||||
lineState uint8
|
||||
}
|
||||
var usbDescriptor = descriptorCDC
|
||||
|
||||
// strToUTF16LEDescriptor converts a utf8 string into a string descriptor
|
||||
// note: the following code only converts ascii characters to UTF16LE. In order
|
||||
@@ -47,11 +37,34 @@ var (
|
||||
usb_STRING_LANGUAGE = [2]uint16{(3 << 8) | (2 + 2), 0x0409} // English
|
||||
)
|
||||
|
||||
const cdcLineInfoSize = 7
|
||||
|
||||
var (
|
||||
errUSBCDCBufferEmpty = errors.New("USB-CDC buffer empty")
|
||||
errUSBCDCWriteByteTimeout = errors.New("USB-CDC write byte timeout")
|
||||
errUSBCDCReadTimeout = errors.New("USB-CDC read timeout")
|
||||
errUSBCDCBytesRead = errors.New("USB-CDC invalid number of bytes read")
|
||||
)
|
||||
|
||||
var (
|
||||
usbEndpointDescriptors [8]usbDeviceDescriptor
|
||||
|
||||
udd_ep_in_cache_buffer [7][128 * 2]uint8
|
||||
udd_ep_out_cache_buffer [7][128 * 2]uint8
|
||||
|
||||
isEndpointHalt = false
|
||||
isRemoteWakeUpEnabled = false
|
||||
|
||||
usbConfiguration uint8
|
||||
usbSetInterface uint8
|
||||
)
|
||||
|
||||
const (
|
||||
usb_IMANUFACTURER = 1
|
||||
usb_IPRODUCT = 2
|
||||
usb_ISERIAL = 3
|
||||
|
||||
usb_ENDPOINT_TYPE_DISABLE = 0xFF
|
||||
usb_ENDPOINT_TYPE_CONTROL = 0x00
|
||||
usb_ENDPOINT_TYPE_ISOCHRONOUS = 0x01
|
||||
usb_ENDPOINT_TYPE_BULK = 0x02
|
||||
@@ -102,12 +115,16 @@ const (
|
||||
usb_CDC_ACM_INTERFACE = 0 // CDC ACM
|
||||
usb_CDC_DATA_INTERFACE = 1 // CDC Data
|
||||
usb_CDC_FIRST_ENDPOINT = 1
|
||||
usb_HID_INTERFACE = 2 // HID
|
||||
|
||||
// Endpoint
|
||||
usb_CDC_ENDPOINT_ACM = 1
|
||||
usb_CDC_ENDPOINT_OUT = 2
|
||||
usb_CDC_ENDPOINT_IN = 3
|
||||
usb_HID_ENDPOINT_IN = 4
|
||||
usb_CONTROL_ENDPOINT = 0
|
||||
usb_CDC_ENDPOINT_ACM = 1
|
||||
usb_CDC_ENDPOINT_OUT = 2
|
||||
usb_CDC_ENDPOINT_IN = 3
|
||||
usb_HID_ENDPOINT_IN = 4
|
||||
usb_MIDI_ENDPOINT_OUT = 5
|
||||
usb_MIDI_ENDPOINT_IN = 6
|
||||
|
||||
// bmRequestType
|
||||
usb_REQUEST_HOSTTODEVICE = 0x00
|
||||
@@ -128,27 +145,23 @@ const (
|
||||
usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE = (usb_REQUEST_DEVICETOHOST | usb_REQUEST_CLASS | usb_REQUEST_INTERFACE)
|
||||
usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE = (usb_REQUEST_HOSTTODEVICE | usb_REQUEST_CLASS | usb_REQUEST_INTERFACE)
|
||||
usb_REQUEST_DEVICETOHOST_STANDARD_INTERFACE = (usb_REQUEST_DEVICETOHOST | usb_REQUEST_STANDARD | usb_REQUEST_INTERFACE)
|
||||
)
|
||||
|
||||
// CDC Class requests
|
||||
usb_CDC_SET_LINE_CODING = 0x20
|
||||
usb_CDC_GET_LINE_CODING = 0x21
|
||||
usb_CDC_SET_CONTROL_LINE_STATE = 0x22
|
||||
usb_CDC_SEND_BREAK = 0x23
|
||||
var (
|
||||
waitTxc [8]bool
|
||||
callbackUSBTx [8]func()
|
||||
callbackUSBRx [8]func([]byte)
|
||||
callbackUSBSetup [3]func(USBSetup) bool
|
||||
|
||||
usb_CDC_V1_10 = 0x0110
|
||||
usb_CDC_COMMUNICATION_INTERFACE_CLASS = 0x02
|
||||
|
||||
usb_CDC_CALL_MANAGEMENT = 0x01
|
||||
usb_CDC_ABSTRACT_CONTROL_MODEL = 0x02
|
||||
usb_CDC_HEADER = 0x00
|
||||
usb_CDC_ABSTRACT_CONTROL_MANAGEMENT = 0x02
|
||||
usb_CDC_UNION = 0x06
|
||||
usb_CDC_CS_INTERFACE = 0x24
|
||||
usb_CDC_CS_ENDPOINT = 0x25
|
||||
usb_CDC_DATA_INTERFACE_CLASS = 0x0A
|
||||
|
||||
usb_CDC_LINESTATE_DTR = 0x01
|
||||
usb_CDC_LINESTATE_RTS = 0x02
|
||||
endPoints = []uint32{
|
||||
usb_CONTROL_ENDPOINT: usb_ENDPOINT_TYPE_CONTROL,
|
||||
usb_CDC_ENDPOINT_ACM: (usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn),
|
||||
usb_CDC_ENDPOINT_OUT: (usb_ENDPOINT_TYPE_BULK | usbEndpointOut),
|
||||
usb_CDC_ENDPOINT_IN: (usb_ENDPOINT_TYPE_BULK | usbEndpointIn),
|
||||
usb_HID_ENDPOINT_IN: (usb_ENDPOINT_TYPE_DISABLE), // Interrupt In
|
||||
usb_MIDI_ENDPOINT_OUT: (usb_ENDPOINT_TYPE_DISABLE), // Bulk Out
|
||||
usb_MIDI_ENDPOINT_IN: (usb_ENDPOINT_TYPE_DISABLE), // Bulk In
|
||||
}
|
||||
)
|
||||
|
||||
// usbDeviceDescBank is the USB device endpoint descriptor.
|
||||
@@ -186,130 +199,63 @@ type usbDeviceDescriptor struct {
|
||||
// uint16_t wIndex;
|
||||
// uint16_t wLength;
|
||||
// } USBSetup;
|
||||
type usbSetup struct {
|
||||
bmRequestType uint8
|
||||
bRequest uint8
|
||||
wValueL uint8
|
||||
wValueH uint8
|
||||
wIndex uint16
|
||||
wLength uint16
|
||||
type USBSetup struct {
|
||||
BmRequestType uint8
|
||||
BRequest uint8
|
||||
WValueL uint8
|
||||
WValueH uint8
|
||||
WIndex uint16
|
||||
WLength uint16
|
||||
}
|
||||
|
||||
func newUSBSetup(data []byte) usbSetup {
|
||||
u := usbSetup{}
|
||||
u.bmRequestType = uint8(data[0])
|
||||
u.bRequest = uint8(data[1])
|
||||
u.wValueL = uint8(data[2])
|
||||
u.wValueH = uint8(data[3])
|
||||
u.wIndex = uint16(data[4]) | (uint16(data[5]) << 8)
|
||||
u.wLength = uint16(data[6]) | (uint16(data[7]) << 8)
|
||||
func newUSBSetup(data []byte) USBSetup {
|
||||
u := USBSetup{}
|
||||
u.BmRequestType = uint8(data[0])
|
||||
u.BRequest = uint8(data[1])
|
||||
u.WValueL = uint8(data[2])
|
||||
u.WValueH = uint8(data[3])
|
||||
u.WIndex = uint16(data[4]) | (uint16(data[5]) << 8)
|
||||
u.WLength = uint16(data[6]) | (uint16(data[7]) << 8)
|
||||
return u
|
||||
}
|
||||
|
||||
// USBCDC is the serial interface that works over the USB port.
|
||||
// To implement the USBCDC interface for a board, you must declare a concrete type as follows:
|
||||
//
|
||||
// type USBCDC struct {
|
||||
// Buffer *RingBuffer
|
||||
// }
|
||||
//
|
||||
// You can also add additional members to this struct depending on your implementation,
|
||||
// but the *RingBuffer is required.
|
||||
// When you are declaring the USBCDC for your board, make sure that you also declare the
|
||||
// RingBuffer using the NewRingBuffer() function:
|
||||
//
|
||||
// USBCDC{Buffer: NewRingBuffer()}
|
||||
//
|
||||
|
||||
// Read from the RX buffer.
|
||||
func (usbcdc *USBCDC) Read(data []byte) (n int, err error) {
|
||||
// check if RX buffer is empty
|
||||
size := usbcdc.Buffered()
|
||||
if size == 0 {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
// Make sure we do not read more from buffer than the data slice can hold.
|
||||
if len(data) < size {
|
||||
size = len(data)
|
||||
}
|
||||
|
||||
// only read number of bytes used from buffer
|
||||
for i := 0; i < size; i++ {
|
||||
v, _ := usbcdc.ReadByte()
|
||||
data[i] = v
|
||||
}
|
||||
|
||||
return size, nil
|
||||
}
|
||||
|
||||
// Write data to the USBCDC.
|
||||
func (usbcdc *USBCDC) Write(data []byte) (n int, err error) {
|
||||
for _, v := range data {
|
||||
usbcdc.WriteByte(v)
|
||||
}
|
||||
return len(data), nil
|
||||
}
|
||||
|
||||
// ReadByte reads a single byte from the RX buffer.
|
||||
// If there is no data in the buffer, returns an error.
|
||||
func (usbcdc *USBCDC) ReadByte() (byte, error) {
|
||||
// check if RX buffer is empty
|
||||
buf, ok := usbcdc.Buffer.Get()
|
||||
if !ok {
|
||||
return 0, errUSBCDCBufferEmpty
|
||||
}
|
||||
return buf, nil
|
||||
}
|
||||
|
||||
// Buffered returns the number of bytes currently stored in the RX buffer.
|
||||
func (usbcdc *USBCDC) Buffered() int {
|
||||
return int(usbcdc.Buffer.Used())
|
||||
}
|
||||
|
||||
// Receive handles adding data to the UART's data buffer.
|
||||
// Usually called by the IRQ handler for a machine.
|
||||
func (usbcdc *USBCDC) Receive(data byte) {
|
||||
usbcdc.Buffer.Put(data)
|
||||
}
|
||||
|
||||
// sendDescriptor creates and sends the various USB descriptor types that
|
||||
// can be requested by the host.
|
||||
func sendDescriptor(setup usbSetup) {
|
||||
switch setup.wValueH {
|
||||
func sendDescriptor(setup USBSetup) {
|
||||
switch setup.WValueH {
|
||||
case usb_CONFIGURATION_DESCRIPTOR_TYPE:
|
||||
sendUSBPacket(0, usbDescriptor.Configuration, setup.wLength)
|
||||
sendUSBPacket(0, usbDescriptor.Configuration, setup.WLength)
|
||||
return
|
||||
case usb_DEVICE_DESCRIPTOR_TYPE:
|
||||
// composite descriptor
|
||||
usbDescriptor.Configure(usb_VID, usb_PID)
|
||||
sendUSBPacket(0, usbDescriptor.Device, setup.wLength)
|
||||
sendUSBPacket(0, usbDescriptor.Device, setup.WLength)
|
||||
return
|
||||
|
||||
case usb_STRING_DESCRIPTOR_TYPE:
|
||||
switch setup.wValueL {
|
||||
switch setup.WValueL {
|
||||
case 0:
|
||||
b := []byte{0x04, 0x03, 0x09, 0x04}
|
||||
sendUSBPacket(0, b, setup.wLength)
|
||||
sendUSBPacket(0, b, setup.WLength)
|
||||
|
||||
case usb_IPRODUCT:
|
||||
b := make([]byte, (len(usb_STRING_PRODUCT)<<1)+2)
|
||||
strToUTF16LEDescriptor(usb_STRING_PRODUCT, b)
|
||||
sendUSBPacket(0, b, setup.wLength)
|
||||
sendUSBPacket(0, b, setup.WLength)
|
||||
|
||||
case usb_IMANUFACTURER:
|
||||
b := make([]byte, (len(usb_STRING_MANUFACTURER)<<1)+2)
|
||||
strToUTF16LEDescriptor(usb_STRING_MANUFACTURER, b)
|
||||
sendUSBPacket(0, b, setup.wLength)
|
||||
sendUSBPacket(0, b, setup.WLength)
|
||||
|
||||
case usb_ISERIAL:
|
||||
// TODO: allow returning a product serial number
|
||||
sendZlp()
|
||||
SendZlp()
|
||||
}
|
||||
return
|
||||
case usb_HID_REPORT_TYPE:
|
||||
if h, ok := usbDescriptor.HID[setup.wIndex]; ok {
|
||||
sendUSBPacket(0, h, setup.wLength)
|
||||
if h, ok := usbDescriptor.HID[setup.WIndex]; ok {
|
||||
sendUSBPacket(0, h, setup.WLength)
|
||||
return
|
||||
}
|
||||
case usb_DEVICE_QUALIFIER:
|
||||
@@ -318,21 +264,112 @@ func sendDescriptor(setup usbSetup) {
|
||||
}
|
||||
|
||||
// do not know how to handle this message, so return zero
|
||||
sendZlp()
|
||||
SendZlp()
|
||||
return
|
||||
}
|
||||
|
||||
// EnableHID enables HID. This function must be executed from the init().
|
||||
func EnableHID(callback func()) {
|
||||
usbDescriptor = descriptorCDCHID
|
||||
endPoints = []uint32{usb_ENDPOINT_TYPE_CONTROL,
|
||||
(usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointOut),
|
||||
(usb_ENDPOINT_TYPE_BULK | usbEndpointIn),
|
||||
(usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn)}
|
||||
func handleStandardSetup(setup USBSetup) bool {
|
||||
switch setup.BRequest {
|
||||
case usb_GET_STATUS:
|
||||
buf := []byte{0, 0}
|
||||
|
||||
hidCallback = callback
|
||||
if setup.BmRequestType != 0 { // endpoint
|
||||
// TODO: actually check if the endpoint in question is currently halted
|
||||
if isEndpointHalt {
|
||||
buf[0] = 1
|
||||
}
|
||||
}
|
||||
|
||||
sendUSBPacket(0, buf, setup.WLength)
|
||||
return true
|
||||
|
||||
case usb_CLEAR_FEATURE:
|
||||
if setup.WValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = false
|
||||
} else if setup.WValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = false
|
||||
}
|
||||
SendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_FEATURE:
|
||||
if setup.WValueL == 1 { // DEVICEREMOTEWAKEUP
|
||||
isRemoteWakeUpEnabled = true
|
||||
} else if setup.WValueL == 0 { // ENDPOINTHALT
|
||||
isEndpointHalt = true
|
||||
}
|
||||
SendZlp()
|
||||
return true
|
||||
|
||||
case usb_SET_ADDRESS:
|
||||
return handleUSBSetAddress(setup)
|
||||
|
||||
case usb_GET_DESCRIPTOR:
|
||||
sendDescriptor(setup)
|
||||
return true
|
||||
|
||||
case usb_SET_DESCRIPTOR:
|
||||
return false
|
||||
|
||||
case usb_GET_CONFIGURATION:
|
||||
buff := []byte{usbConfiguration}
|
||||
sendUSBPacket(0, buff, setup.WLength)
|
||||
return true
|
||||
|
||||
case usb_SET_CONFIGURATION:
|
||||
if setup.BmRequestType&usb_REQUEST_RECIPIENT == usb_REQUEST_DEVICE {
|
||||
for i := 1; i < len(endPoints); i++ {
|
||||
initEndpoint(uint32(i), endPoints[i])
|
||||
}
|
||||
|
||||
usbConfiguration = setup.WValueL
|
||||
|
||||
SendZlp()
|
||||
return true
|
||||
} else {
|
||||
return false
|
||||
}
|
||||
|
||||
case usb_GET_INTERFACE:
|
||||
buff := []byte{usbSetInterface}
|
||||
sendUSBPacket(0, buff, setup.WLength)
|
||||
return true
|
||||
|
||||
case usb_SET_INTERFACE:
|
||||
usbSetInterface = setup.WValueL
|
||||
|
||||
SendZlp()
|
||||
return true
|
||||
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
// hidCallback is a variable that holds the callback when using HID.
|
||||
var hidCallback func()
|
||||
func EnableCDC(callback func(), callbackRx func([]byte), callbackSetup func(USBSetup) bool) {
|
||||
//usbDescriptor = descriptorCDC
|
||||
endPoints[usb_CDC_ENDPOINT_ACM] = (usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn)
|
||||
endPoints[usb_CDC_ENDPOINT_OUT] = (usb_ENDPOINT_TYPE_BULK | usbEndpointOut)
|
||||
endPoints[usb_CDC_ENDPOINT_IN] = (usb_ENDPOINT_TYPE_BULK | usbEndpointIn)
|
||||
callbackUSBRx[usb_CDC_ENDPOINT_OUT] = callbackRx
|
||||
callbackUSBTx[usb_CDC_ENDPOINT_IN] = callback
|
||||
callbackUSBSetup[usb_CDC_ACM_INTERFACE] = callbackSetup // 0x02 (Communications and CDC Control)
|
||||
callbackUSBSetup[usb_CDC_DATA_INTERFACE] = nil // 0x0A (CDC-Data)
|
||||
}
|
||||
|
||||
// EnableHID enables HID. This function must be executed from the init().
|
||||
func EnableHID(callback func(), callbackRx func([]byte), callbackSetup func(USBSetup) bool) {
|
||||
usbDescriptor = descriptorCDCHID
|
||||
endPoints[usb_HID_ENDPOINT_IN] = (usb_ENDPOINT_TYPE_INTERRUPT | usbEndpointIn)
|
||||
callbackUSBTx[usb_HID_ENDPOINT_IN] = callback
|
||||
callbackUSBSetup[usb_HID_INTERFACE] = callbackSetup // 0x03 (HID - Human Interface Device)
|
||||
}
|
||||
|
||||
// EnableMIDI enables MIDI. This function must be executed from the init().
|
||||
func EnableMIDI(callback func(), callbackRx func([]byte), callbackSetup func(USBSetup) bool) {
|
||||
usbDescriptor = descriptorCDCMIDI
|
||||
endPoints[usb_MIDI_ENDPOINT_OUT] = (usb_ENDPOINT_TYPE_BULK | usbEndpointOut)
|
||||
endPoints[usb_MIDI_ENDPOINT_IN] = (usb_ENDPOINT_TYPE_BULK | usbEndpointIn)
|
||||
callbackUSBRx[usb_MIDI_ENDPOINT_OUT] = callbackRx
|
||||
callbackUSBTx[usb_MIDI_ENDPOINT_IN] = callback
|
||||
}
|
||||
|
||||
@@ -0,0 +1,118 @@
|
||||
package cdc
|
||||
|
||||
import (
|
||||
"runtime/volatile"
|
||||
)
|
||||
|
||||
const bufferSize = 128
|
||||
|
||||
// RingBuffer is ring buffer implementation inspired by post at
|
||||
// https://www.embeddedrelated.com/showthread/comp.arch.embedded/77084-1.php
|
||||
type RingBuffer struct {
|
||||
rxbuffer [bufferSize]volatile.Register8
|
||||
head volatile.Register8
|
||||
tail volatile.Register8
|
||||
}
|
||||
|
||||
// NewRingBuffer returns a new ring buffer.
|
||||
func NewRingBuffer() *RingBuffer {
|
||||
return &RingBuffer{}
|
||||
}
|
||||
|
||||
// Used returns how many bytes in buffer have been used.
|
||||
func (rb *RingBuffer) Used() uint8 {
|
||||
return uint8(rb.head.Get() - rb.tail.Get())
|
||||
}
|
||||
|
||||
// Put stores a byte in the buffer. If the buffer is already
|
||||
// full, the method will return false.
|
||||
func (rb *RingBuffer) Put(val byte) bool {
|
||||
if rb.Used() != bufferSize {
|
||||
rb.head.Set(rb.head.Get() + 1)
|
||||
rb.rxbuffer[rb.head.Get()%bufferSize].Set(val)
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Get returns a byte from the buffer. If the buffer is empty,
|
||||
// the method will return a false as the second value.
|
||||
func (rb *RingBuffer) Get() (byte, bool) {
|
||||
if rb.Used() != 0 {
|
||||
rb.tail.Set(rb.tail.Get() + 1)
|
||||
return rb.rxbuffer[rb.tail.Get()%bufferSize].Get(), true
|
||||
}
|
||||
return 0, false
|
||||
}
|
||||
|
||||
// Clear resets the head and tail pointer to zero.
|
||||
func (rb *RingBuffer) Clear() {
|
||||
rb.head.Set(0)
|
||||
rb.tail.Set(0)
|
||||
}
|
||||
|
||||
const bufferSize2 = 8
|
||||
|
||||
// RingBuffer2 is ring buffer implementation inspired by post at
|
||||
// https://www.embeddedrelated.com/showthread/comp.arch.embedded/77084-1.php
|
||||
type RingBuffer2 struct {
|
||||
rxbuffer [bufferSize2]struct {
|
||||
buf [64]byte
|
||||
size int
|
||||
}
|
||||
head volatile.Register8
|
||||
tail volatile.Register8
|
||||
}
|
||||
|
||||
// NewRingBuffer returns a new ring buffer.
|
||||
func NewRingBuffer2() *RingBuffer2 {
|
||||
return &RingBuffer2{}
|
||||
}
|
||||
|
||||
// Used returns how many bytes in buffer have been used.
|
||||
func (rb *RingBuffer2) Used() uint8 {
|
||||
return uint8(rb.head.Get() - rb.tail.Get())
|
||||
}
|
||||
|
||||
// Put stores a byte in the buffer. If the buffer is already
|
||||
// full, the method will return false.
|
||||
func (rb *RingBuffer2) Put(val []byte) bool {
|
||||
if rb.Used() == bufferSize2 {
|
||||
return false
|
||||
}
|
||||
|
||||
if rb.Used() == 0 {
|
||||
rb.head.Set(rb.head.Get() + 1)
|
||||
rb.rxbuffer[rb.head.Get()%bufferSize2].size = 0
|
||||
}
|
||||
buf := &rb.rxbuffer[rb.head.Get()%bufferSize2]
|
||||
|
||||
for i := 0; i < len(val); i++ {
|
||||
if buf.size == 64 {
|
||||
// next
|
||||
rb.head.Set(rb.head.Get() + 1)
|
||||
buf = &rb.rxbuffer[rb.head.Get()%bufferSize2]
|
||||
rb.rxbuffer[rb.head.Get()%bufferSize2].size = 0
|
||||
}
|
||||
buf.buf[buf.size] = val[i]
|
||||
buf.size++
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Get returns a byte from the buffer. If the buffer is empty,
|
||||
// the method will return a false as the second value.
|
||||
func (rb *RingBuffer2) Get() ([]byte, bool) {
|
||||
if rb.Used() != 0 {
|
||||
rb.tail.Set(rb.tail.Get() + 1)
|
||||
size := rb.rxbuffer[rb.tail.Get()%bufferSize2].size
|
||||
return rb.rxbuffer[rb.tail.Get()%bufferSize2].buf[:size], true
|
||||
}
|
||||
return nil, false
|
||||
}
|
||||
|
||||
// Clear resets the head and tail pointer to zero.
|
||||
func (rb *RingBuffer2) Clear() {
|
||||
rb.head.Set(0)
|
||||
rb.tail.Set(0)
|
||||
}
|
||||
@@ -0,0 +1,164 @@
|
||||
package cdc
|
||||
|
||||
import (
|
||||
"machine"
|
||||
)
|
||||
|
||||
const (
|
||||
cdcEndpointACM = 1
|
||||
cdcEndpointOut = 2
|
||||
cdcEndpointIn = 3
|
||||
)
|
||||
|
||||
var CDC *cdc
|
||||
|
||||
type cdc struct {
|
||||
buf *RingBuffer
|
||||
callbackFuncRx func([]byte)
|
||||
}
|
||||
|
||||
// New returns hid-mouse.
|
||||
func New() *USBCDC {
|
||||
USB = &USBCDC{
|
||||
Buffer: NewRingBuffer(),
|
||||
Buffer2: NewRingBuffer2(),
|
||||
}
|
||||
return USB
|
||||
}
|
||||
|
||||
func newCDC() *cdc {
|
||||
m := &cdc{
|
||||
buf: NewRingBuffer(),
|
||||
}
|
||||
//machine.EnableCDC(m.Callback, m.CallbackRx)
|
||||
return m
|
||||
}
|
||||
|
||||
func (c *cdc) SetCallback(callbackRx func([]byte)) {
|
||||
c.callbackFuncRx = callbackRx
|
||||
}
|
||||
|
||||
func (c *cdc) Write(b []byte) (n int, err error) {
|
||||
i := 0
|
||||
for i = 0; i < len(b); i++ {
|
||||
c.buf.Put(b[i])
|
||||
}
|
||||
return i, nil
|
||||
}
|
||||
|
||||
func (c *cdc) sendUSBPacket(b []byte) {
|
||||
machine.SendUSBInPacket(cdcEndpointIn, b)
|
||||
}
|
||||
|
||||
// from BulkIn
|
||||
func (c *cdc) Callback() {
|
||||
if b, ok := c.buf.Get(); ok {
|
||||
c.sendUSBPacket([]byte{b})
|
||||
}
|
||||
}
|
||||
|
||||
// from BulkOut
|
||||
func (c *cdc) CallbackRx(b []byte) {
|
||||
if c.callbackFuncRx != nil {
|
||||
c.callbackFuncRx(b)
|
||||
}
|
||||
}
|
||||
|
||||
const (
|
||||
// bmRequestType
|
||||
usb_REQUEST_HOSTTODEVICE = 0x00
|
||||
usb_REQUEST_DEVICETOHOST = 0x80
|
||||
usb_REQUEST_DIRECTION = 0x80
|
||||
|
||||
usb_REQUEST_STANDARD = 0x00
|
||||
usb_REQUEST_CLASS = 0x20
|
||||
usb_REQUEST_VENDOR = 0x40
|
||||
usb_REQUEST_TYPE = 0x60
|
||||
|
||||
usb_REQUEST_DEVICE = 0x00
|
||||
usb_REQUEST_INTERFACE = 0x01
|
||||
usb_REQUEST_ENDPOINT = 0x02
|
||||
usb_REQUEST_OTHER = 0x03
|
||||
usb_REQUEST_RECIPIENT = 0x1F
|
||||
|
||||
usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE = (usb_REQUEST_DEVICETOHOST | usb_REQUEST_CLASS | usb_REQUEST_INTERFACE)
|
||||
usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE = (usb_REQUEST_HOSTTODEVICE | usb_REQUEST_CLASS | usb_REQUEST_INTERFACE)
|
||||
usb_REQUEST_DEVICETOHOST_STANDARD_INTERFACE = (usb_REQUEST_DEVICETOHOST | usb_REQUEST_STANDARD | usb_REQUEST_INTERFACE)
|
||||
|
||||
// CDC Class requests
|
||||
usb_CDC_SET_LINE_CODING = 0x20
|
||||
usb_CDC_GET_LINE_CODING = 0x21
|
||||
usb_CDC_SET_CONTROL_LINE_STATE = 0x22
|
||||
usb_CDC_SEND_BREAK = 0x23
|
||||
|
||||
usb_CDC_V1_10 = 0x0110
|
||||
usb_CDC_COMMUNICATION_INTERFACE_CLASS = 0x02
|
||||
|
||||
usb_CDC_CALL_MANAGEMENT = 0x01
|
||||
usb_CDC_ABSTRACT_CONTROL_MODEL = 0x02
|
||||
usb_CDC_HEADER = 0x00
|
||||
usb_CDC_ABSTRACT_CONTROL_MANAGEMENT = 0x02
|
||||
usb_CDC_UNION = 0x06
|
||||
usb_CDC_CS_INTERFACE = 0x24
|
||||
usb_CDC_CS_ENDPOINT = 0x25
|
||||
usb_CDC_DATA_INTERFACE_CLASS = 0x0A
|
||||
|
||||
usb_CDC_LINESTATE_DTR = 0x01
|
||||
usb_CDC_LINESTATE_RTS = 0x02
|
||||
)
|
||||
|
||||
func (c *cdc) handleSetup(setup machine.USBSetup) bool {
|
||||
if setup.BmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
|
||||
if setup.BRequest == usb_CDC_GET_LINE_CODING {
|
||||
var b [cdcLineInfoSize]byte
|
||||
b[0] = byte(usbLineInfo.dwDTERate)
|
||||
b[1] = byte(usbLineInfo.dwDTERate >> 8)
|
||||
b[2] = byte(usbLineInfo.dwDTERate >> 16)
|
||||
b[3] = byte(usbLineInfo.dwDTERate >> 24)
|
||||
b[4] = byte(usbLineInfo.bCharFormat)
|
||||
b[5] = byte(usbLineInfo.bParityType)
|
||||
b[6] = byte(usbLineInfo.bDataBits)
|
||||
|
||||
//c.sendUSBPacket(0, b[:], setup.WLength)
|
||||
c.sendUSBPacket(b[:])
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if setup.BmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
|
||||
if setup.BRequest == usb_CDC_SET_LINE_CODING {
|
||||
b, err := machine.ReceiveUSBControlPacket()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
usbLineInfo.dwDTERate = uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
||||
usbLineInfo.bCharFormat = b[4]
|
||||
usbLineInfo.bParityType = b[5]
|
||||
usbLineInfo.bDataBits = b[6]
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
usbLineInfo.lineState = setup.WValueL
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SET_LINE_CODING || setup.BRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
// auto-reset into the bootloader
|
||||
if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
|
||||
machine.ResetProcessor()
|
||||
} else {
|
||||
// TODO: cancel any reset
|
||||
}
|
||||
sendZlp()
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SEND_BREAK {
|
||||
// TODO: something with this value?
|
||||
// breakValue = ((uint16_t)setup.WValueH << 8) | setup.WValueL;
|
||||
// return false;
|
||||
sendZlp()
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
@@ -0,0 +1,225 @@
|
||||
package cdc
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"machine"
|
||||
"runtime/interrupt"
|
||||
"runtime/volatile"
|
||||
)
|
||||
|
||||
var (
|
||||
errUSBCDCBufferEmpty = errors.New("USB-CDC buffer empty")
|
||||
errUSBCDCWriteByteTimeout = errors.New("USB-CDC write byte timeout")
|
||||
errUSBCDCReadTimeout = errors.New("USB-CDC read timeout")
|
||||
errUSBCDCBytesRead = errors.New("USB-CDC invalid number of bytes read")
|
||||
)
|
||||
|
||||
const cdcLineInfoSize = 7
|
||||
|
||||
type cdcLineInfo struct {
|
||||
dwDTERate uint32
|
||||
bCharFormat uint8
|
||||
bParityType uint8
|
||||
bDataBits uint8
|
||||
lineState uint8
|
||||
}
|
||||
|
||||
// USBCDC is the serial interface that works over the USB port.
|
||||
// To implement the USBCDC interface for a board, you must declare a concrete type as follows:
|
||||
//
|
||||
// type USBCDC struct {
|
||||
// Buffer *RingBuffer
|
||||
// }
|
||||
//
|
||||
// You can also add additional members to this struct depending on your implementation,
|
||||
// but the *RingBuffer is required.
|
||||
// When you are declaring the USBCDC for your board, make sure that you also declare the
|
||||
// RingBuffer using the NewRingBuffer() function:
|
||||
//
|
||||
// USBCDC{Buffer: NewRingBuffer()}
|
||||
//
|
||||
|
||||
// Read from the RX buffer.
|
||||
func (usbcdc *USBCDC) Read(data []byte) (n int, err error) {
|
||||
// check if RX buffer is empty
|
||||
size := usbcdc.Buffered()
|
||||
if size == 0 {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
// Make sure we do not read more from buffer than the data slice can hold.
|
||||
if len(data) < size {
|
||||
size = len(data)
|
||||
}
|
||||
|
||||
// only read number of bytes used from buffer
|
||||
for i := 0; i < size; i++ {
|
||||
v, _ := usbcdc.ReadByte()
|
||||
data[i] = v
|
||||
}
|
||||
|
||||
return size, nil
|
||||
}
|
||||
|
||||
// ReadByte reads a single byte from the RX buffer.
|
||||
// If there is no data in the buffer, returns an error.
|
||||
func (usbcdc *USBCDC) ReadByte() (byte, error) {
|
||||
// check if RX buffer is empty
|
||||
buf, ok := usbcdc.Buffer.Get()
|
||||
if !ok {
|
||||
return 0, errUSBCDCBufferEmpty
|
||||
}
|
||||
return buf, nil
|
||||
}
|
||||
|
||||
// Buffered returns the number of bytes currently stored in the RX buffer.
|
||||
func (usbcdc *USBCDC) Buffered() int {
|
||||
return int(usbcdc.Buffer.Used())
|
||||
}
|
||||
|
||||
// Receive handles adding data to the UART's data buffer.
|
||||
// Usually called by the IRQ handler for a machine.
|
||||
func (usbcdc *USBCDC) Receive(data byte) {
|
||||
usbcdc.Buffer.Put(data)
|
||||
}
|
||||
|
||||
// USBCDC is the USB CDC aka serial over USB interface on the SAMD21.
|
||||
type USBCDC struct {
|
||||
Buffer *RingBuffer
|
||||
Buffer2 *RingBuffer2
|
||||
TxIdx volatile.Register8
|
||||
waitTxcRetryCount uint8
|
||||
sent bool
|
||||
configured bool
|
||||
waitTxc bool
|
||||
}
|
||||
|
||||
func (x *USBCDC) Debug() int {
|
||||
return 3
|
||||
}
|
||||
|
||||
var (
|
||||
// USB is a USB CDC interface.
|
||||
USB *USBCDC
|
||||
|
||||
usbLineInfo = cdcLineInfo{115200, 0x00, 0x00, 0x08, 0x00}
|
||||
)
|
||||
|
||||
// Configure the USB CDC interface. The config is here for compatibility with the UART interface.
|
||||
func (usbcdc *USBCDC) Configure(config machine.UARTConfig) {
|
||||
}
|
||||
|
||||
// Flush flushes buffered data.
|
||||
func (usbcdc *USBCDC) Flush() {
|
||||
mask := interrupt.Disable()
|
||||
if b, ok := usbcdc.Buffer2.Get(); ok {
|
||||
machine.SendUSBInPacket(cdcEndpointIn, b)
|
||||
} else {
|
||||
usbcdc.waitTxc = false
|
||||
}
|
||||
interrupt.Restore(mask)
|
||||
}
|
||||
|
||||
// Write data to the USBCDC.
|
||||
func (usbcdc *USBCDC) Write(data []byte) (n int, err error) {
|
||||
if usbLineInfo.lineState > 0 {
|
||||
mask := interrupt.Disable()
|
||||
usbcdc.Buffer2.Put(data)
|
||||
if !usbcdc.waitTxc {
|
||||
usbcdc.waitTxc = true
|
||||
usbcdc.Flush()
|
||||
}
|
||||
interrupt.Restore(mask)
|
||||
}
|
||||
return len(data), nil
|
||||
}
|
||||
|
||||
// WriteByte writes a byte of data to the USB CDC interface.
|
||||
func (usbcdc *USBCDC) WriteByte(c byte) error {
|
||||
usbcdc.Write([]byte{c})
|
||||
return nil
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) DTR() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_DTR) > 0
|
||||
}
|
||||
|
||||
func (usbcdc *USBCDC) RTS() bool {
|
||||
return (usbLineInfo.lineState & usb_CDC_LINESTATE_RTS) > 0
|
||||
}
|
||||
|
||||
// Configured returns whether usbcdc is configured or not.
|
||||
func (usbcdc *USBCDC) Configured() bool {
|
||||
return usbcdc.configured
|
||||
}
|
||||
|
||||
func cdcCallbackRx(b []byte) {
|
||||
for i := range b {
|
||||
USB.Receive(b[i])
|
||||
}
|
||||
}
|
||||
|
||||
func cdcSetup(setup machine.USBSetup) bool {
|
||||
if setup.BmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
|
||||
if setup.BRequest == usb_CDC_GET_LINE_CODING {
|
||||
var b [cdcLineInfoSize]byte
|
||||
b[0] = byte(usbLineInfo.dwDTERate)
|
||||
b[1] = byte(usbLineInfo.dwDTERate >> 8)
|
||||
b[2] = byte(usbLineInfo.dwDTERate >> 16)
|
||||
b[3] = byte(usbLineInfo.dwDTERate >> 24)
|
||||
b[4] = byte(usbLineInfo.bCharFormat)
|
||||
b[5] = byte(usbLineInfo.bParityType)
|
||||
b[6] = byte(usbLineInfo.bDataBits)
|
||||
|
||||
//machine.SendUSBPacket(0, b[:], setup.WLength)
|
||||
machine.SendUSBInPacket(0, b[:])
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if setup.BmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
|
||||
if setup.BRequest == usb_CDC_SET_LINE_CODING {
|
||||
b, err := machine.ReceiveUSBControlPacket()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
usbLineInfo.dwDTERate = uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
||||
usbLineInfo.bCharFormat = b[4]
|
||||
usbLineInfo.bParityType = b[5]
|
||||
usbLineInfo.bDataBits = b[6]
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
usbLineInfo.lineState = setup.WValueL
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SET_LINE_CODING || setup.BRequest == usb_CDC_SET_CONTROL_LINE_STATE {
|
||||
// auto-reset into the bootloader
|
||||
if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
|
||||
machine.ResetProcessor()
|
||||
} else {
|
||||
// TODO: cancel any reset
|
||||
}
|
||||
sendZlp()
|
||||
}
|
||||
|
||||
if setup.BRequest == usb_CDC_SEND_BREAK {
|
||||
// TODO: something with this value?
|
||||
// breakValue = ((uint16_t)setup.wValueH << 8) | setup.wValueL;
|
||||
// return false;
|
||||
sendZlp()
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func EnableUSBCDC() {
|
||||
machine.Serial = USB
|
||||
machine.EnableCDC(USB.Flush, cdcCallbackRx, cdcSetup)
|
||||
}
|
||||
|
||||
func sendZlp() {
|
||||
machine.SendZlp()
|
||||
}
|
||||
@@ -14,6 +14,9 @@ var (
|
||||
|
||||
const (
|
||||
hidEndpoint = 4
|
||||
|
||||
usb_SET_REPORT_TYPE = 33
|
||||
usb_SET_IDLE = 10
|
||||
)
|
||||
|
||||
type hidDevicer interface {
|
||||
@@ -27,7 +30,7 @@ var size int
|
||||
// calls machine.EnableHID for USB configuration
|
||||
func SetCallbackHandler(d hidDevicer) {
|
||||
if size == 0 {
|
||||
machine.EnableHID(callback)
|
||||
machine.EnableHID(callback, nil, nil)
|
||||
}
|
||||
|
||||
devices[size] = d
|
||||
@@ -45,7 +48,16 @@ func callback() {
|
||||
}
|
||||
}
|
||||
|
||||
func callbackSetup(setup machine.USBSetup) bool {
|
||||
ok := false
|
||||
if setup.BmRequestType == usb_SET_REPORT_TYPE && setup.BRequest == usb_SET_IDLE {
|
||||
machine.SendZlp()
|
||||
ok = true
|
||||
}
|
||||
return ok
|
||||
}
|
||||
|
||||
// SendUSBPacket sends a HIDPacket.
|
||||
func SendUSBPacket(b []byte) {
|
||||
machine.SendUSBHIDPacket(hidEndpoint, b)
|
||||
machine.SendUSBInPacket(hidEndpoint, b)
|
||||
}
|
||||
|
||||
@@ -41,7 +41,8 @@ type keyboard struct {
|
||||
// wideChar holds high bits for the UTF-8 decoder.
|
||||
wideChar uint16
|
||||
|
||||
buf *hid.RingBuffer
|
||||
buf *hid.RingBuffer
|
||||
waitTxc bool
|
||||
}
|
||||
|
||||
// decodeState represents a state in the UTF-8 decode state machine.
|
||||
@@ -74,13 +75,24 @@ func newKeyboard() *keyboard {
|
||||
}
|
||||
|
||||
func (kb *keyboard) Callback() bool {
|
||||
kb.waitTxc = false
|
||||
if b, ok := kb.buf.Get(); ok {
|
||||
kb.waitTxc = true
|
||||
hid.SendUSBPacket(b)
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (kb *keyboard) tx(b []byte) {
|
||||
if kb.waitTxc {
|
||||
kb.buf.Put(b)
|
||||
} else {
|
||||
kb.waitTxc = true
|
||||
hid.SendUSBPacket(b)
|
||||
}
|
||||
}
|
||||
|
||||
func (kb *keyboard) ready() bool {
|
||||
return true
|
||||
}
|
||||
@@ -214,7 +226,7 @@ func (kb *keyboard) Press(c Keycode) error {
|
||||
}
|
||||
|
||||
func (kb *keyboard) sendKey(consumer bool, b []byte) bool {
|
||||
kb.buf.Put(b)
|
||||
kb.tx(b)
|
||||
return true
|
||||
}
|
||||
|
||||
|
||||
@@ -15,8 +15,9 @@ const (
|
||||
)
|
||||
|
||||
type mouse struct {
|
||||
buf *hid.RingBuffer
|
||||
button Button
|
||||
buf *hid.RingBuffer
|
||||
button Button
|
||||
waitTxc bool
|
||||
}
|
||||
|
||||
func init() {
|
||||
@@ -38,13 +39,24 @@ func newMouse() *mouse {
|
||||
}
|
||||
|
||||
func (m *mouse) Callback() bool {
|
||||
m.waitTxc = false
|
||||
if b, ok := m.buf.Get(); ok {
|
||||
m.waitTxc = true
|
||||
hid.SendUSBPacket(b[:5])
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (m *mouse) tx(b []byte) {
|
||||
if m.waitTxc {
|
||||
m.buf.Put(b)
|
||||
} else {
|
||||
m.waitTxc = true
|
||||
hid.SendUSBPacket(b)
|
||||
}
|
||||
}
|
||||
|
||||
// Move is a function that moves the mouse cursor.
|
||||
func (m *mouse) Move(vx, vy int) {
|
||||
if vx == 0 && vy == 0 {
|
||||
@@ -65,7 +77,7 @@ func (m *mouse) Move(vx, vy int) {
|
||||
vy = 127
|
||||
}
|
||||
|
||||
m.buf.Put([]byte{
|
||||
m.tx([]byte{
|
||||
0x01, byte(m.button), byte(vx), byte(vy), 0x00,
|
||||
})
|
||||
}
|
||||
@@ -79,7 +91,7 @@ func (m *mouse) Click(btn Button) {
|
||||
// Press presses the given mouse buttons.
|
||||
func (m *mouse) Press(btn Button) {
|
||||
m.button |= btn
|
||||
m.buf.Put([]byte{
|
||||
m.tx([]byte{
|
||||
0x01, byte(m.button), 0x00, 0x00, 0x00,
|
||||
})
|
||||
}
|
||||
@@ -87,7 +99,7 @@ func (m *mouse) Press(btn Button) {
|
||||
// Release releases the given mouse buttons.
|
||||
func (m *mouse) Release(btn Button) {
|
||||
m.button &= ^btn
|
||||
m.buf.Put([]byte{
|
||||
m.tx([]byte{
|
||||
0x01, byte(m.button), 0x00, 0x00, 0x00,
|
||||
})
|
||||
}
|
||||
@@ -105,7 +117,7 @@ func (m *mouse) Wheel(v int) {
|
||||
v = 127
|
||||
}
|
||||
|
||||
m.buf.Put([]byte{
|
||||
m.tx([]byte{
|
||||
0x01, byte(m.button), 0x00, 0x00, byte(v),
|
||||
})
|
||||
}
|
||||
|
||||
@@ -0,0 +1,52 @@
|
||||
package midi
|
||||
|
||||
import (
|
||||
"runtime/volatile"
|
||||
)
|
||||
|
||||
const bufferSize = 128
|
||||
|
||||
// RingBuffer is ring buffer implementation inspired by post at
|
||||
// https://www.embeddedrelated.com/showthread/comp.arch.embedded/77084-1.php
|
||||
type RingBuffer struct {
|
||||
rxbuffer [bufferSize][4]byte
|
||||
head volatile.Register8
|
||||
tail volatile.Register8
|
||||
}
|
||||
|
||||
// NewRingBuffer returns a new ring buffer.
|
||||
func NewRingBuffer() *RingBuffer {
|
||||
return &RingBuffer{}
|
||||
}
|
||||
|
||||
// Used returns how many bytes in buffer have been used.
|
||||
func (rb *RingBuffer) Used() uint8 {
|
||||
return uint8(rb.head.Get() - rb.tail.Get())
|
||||
}
|
||||
|
||||
// Put stores a byte in the buffer. If the buffer is already
|
||||
// full, the method will return false.
|
||||
func (rb *RingBuffer) Put(val []byte) bool {
|
||||
if rb.Used() != bufferSize {
|
||||
rb.head.Set(rb.head.Get() + 1)
|
||||
copy(rb.rxbuffer[rb.head.Get()%bufferSize][:], val)
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Get returns a byte from the buffer. If the buffer is empty,
|
||||
// the method will return a false as the second value.
|
||||
func (rb *RingBuffer) Get() ([]byte, bool) {
|
||||
if rb.Used() != 0 {
|
||||
rb.tail.Set(rb.tail.Get() + 1)
|
||||
return rb.rxbuffer[rb.tail.Get()%bufferSize][:], true
|
||||
}
|
||||
return nil, false
|
||||
}
|
||||
|
||||
// Clear resets the head and tail pointer to zero.
|
||||
func (rb *RingBuffer) Clear() {
|
||||
rb.head.Set(0)
|
||||
rb.tail.Set(0)
|
||||
}
|
||||
@@ -0,0 +1,79 @@
|
||||
package midi
|
||||
|
||||
import (
|
||||
"machine"
|
||||
)
|
||||
|
||||
const (
|
||||
midiEndpointOut = 5 // from PC
|
||||
midiEndpointIn = 6 // to PC
|
||||
)
|
||||
|
||||
var Midi *midi
|
||||
|
||||
type midi struct {
|
||||
buf *RingBuffer
|
||||
callbackFuncRx func([]byte)
|
||||
waitTxc bool
|
||||
}
|
||||
|
||||
func init() {
|
||||
if Midi == nil {
|
||||
Midi = newMidi()
|
||||
}
|
||||
}
|
||||
|
||||
// New returns hid-mouse.
|
||||
func New() *midi {
|
||||
return Midi
|
||||
}
|
||||
|
||||
func newMidi() *midi {
|
||||
m := &midi{
|
||||
buf: NewRingBuffer(),
|
||||
}
|
||||
machine.EnableMIDI(m.Callback, m.CallbackRx, nil)
|
||||
return m
|
||||
}
|
||||
|
||||
func (m *midi) SetCallback(callbackRx func([]byte)) {
|
||||
m.callbackFuncRx = callbackRx
|
||||
}
|
||||
|
||||
func (m *midi) Write(b []byte) (n int, err error) {
|
||||
i := 0
|
||||
for i = 0; i < len(b); i += 4 {
|
||||
m.tx(b[i : i+4])
|
||||
}
|
||||
return i, nil
|
||||
}
|
||||
|
||||
// sendUSBPacket sends a MIDIPacket.
|
||||
func (m *midi) sendUSBPacket(b []byte) {
|
||||
machine.SendUSBInPacket(midiEndpointIn, b)
|
||||
}
|
||||
|
||||
// from BulkIn
|
||||
func (m *midi) Callback() {
|
||||
m.waitTxc = false
|
||||
if b, ok := m.buf.Get(); ok {
|
||||
m.waitTxc = true
|
||||
m.sendUSBPacket(b)
|
||||
}
|
||||
}
|
||||
|
||||
func (m *midi) tx(b []byte) {
|
||||
if m.waitTxc {
|
||||
m.buf.Put(b)
|
||||
} else {
|
||||
m.waitTxc = true
|
||||
m.sendUSBPacket(b)
|
||||
}
|
||||
}
|
||||
|
||||
// from BulkOut
|
||||
func (m *midi) CallbackRx(b []byte) {
|
||||
if m.callbackFuncRx != nil {
|
||||
m.callbackFuncRx(b)
|
||||
}
|
||||
}
|
||||
@@ -1,5 +1,5 @@
|
||||
//go:build sam || nrf52840
|
||||
// +build sam nrf52840
|
||||
//go:build sam || nrf52840 || rp2040
|
||||
// +build sam nrf52840 rp2040
|
||||
|
||||
package machine
|
||||
|
||||
@@ -14,6 +14,9 @@ func (d *USBDescriptor) Configure(idVendor, idProduct uint16) {
|
||||
d.Device[9] = byte(idVendor >> 8)
|
||||
d.Device[10] = byte(idProduct)
|
||||
d.Device[11] = byte(idProduct >> 8)
|
||||
|
||||
d.Configuration[2] = byte(len(d.Configuration))
|
||||
d.Configuration[3] = byte(len(d.Configuration) >> 8)
|
||||
}
|
||||
|
||||
var descriptorCDC = USBDescriptor{
|
||||
@@ -68,3 +71,35 @@ var descriptorCDCHID = USBDescriptor{
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
var descriptorCDCMIDI = USBDescriptor{
|
||||
Device: []byte{
|
||||
0x12, 0x01, 0x00, 0x02, 0xef, 0x02, 0x01, 0x40, 0x86, 0x28, 0x2d, 0x80, 0x00, 0x01, 0x01, 0x02, 0x03, 0x01,
|
||||
},
|
||||
Configuration: []byte{
|
||||
0x09, 0x02, 0xaf, 0x00, 0x04, 0x01, 0x00, 0xa0, 0x32,
|
||||
0x08, 0x0b, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00,
|
||||
0x09, 0x04, 0x00, 0x00, 0x01, 0x02, 0x02, 0x00, 0x00,
|
||||
0x05, 0x24, 0x00, 0x10, 0x01,
|
||||
0x04, 0x24, 0x02, 0x06,
|
||||
0x05, 0x24, 0x06, 0x00, 0x01,
|
||||
0x05, 0x24, 0x01, 0x01, 0x01,
|
||||
0x07, 0x05, 0x81, 0x03, 0x10, 0x00, 0x10,
|
||||
0x09, 0x04, 0x01, 0x00, 0x02, 0x0a, 0x00, 0x00, 0x00,
|
||||
0x07, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00,
|
||||
0x07, 0x05, 0x83, 0x02, 0x40, 0x00, 0x00,
|
||||
0x08, 0x0b, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00,
|
||||
0x09, 0x04, 0x02, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00,
|
||||
0x09, 0x24, 0x01, 0x00, 0x01, 0x09, 0x00, 0x01, 0x03,
|
||||
0x09, 0x04, 0x03, 0x00, 0x02, 0x01, 0x03, 0x00, 0x00,
|
||||
0x07, 0x24, 0x01, 0x00, 0x01, 0x41, 0x00,
|
||||
0x06, 0x24, 0x02, 0x01, 0x01, 0x00,
|
||||
0x06, 0x24, 0x02, 0x02, 0x02, 0x00,
|
||||
0x09, 0x24, 0x03, 0x01, 0x03, 0x01, 0x02, 0x01, 0x00,
|
||||
0x09, 0x24, 0x03, 0x02, 0x04, 0x01, 0x01, 0x01, 0x00,
|
||||
0x09, 0x05, 0x05, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
|
||||
0x05, 0x25, 0x01, 0x01, 0x01,
|
||||
0x09, 0x05, 0x86, 0x02, 0x40, 0x00, 0x00, 0x00, 0x00,
|
||||
0x05, 0x25, 0x01, 0x01, 0x03,
|
||||
},
|
||||
}
|
||||
|
||||
@@ -7,6 +7,7 @@ import (
|
||||
"device/arm"
|
||||
"device/sam"
|
||||
"machine"
|
||||
"machine/usb/cdc"
|
||||
"runtime/interrupt"
|
||||
"runtime/volatile"
|
||||
"unsafe"
|
||||
@@ -29,10 +30,9 @@ func init() {
|
||||
initADCClock()
|
||||
|
||||
// connect to USB CDC interface
|
||||
cdc.EnableUSBCDC()
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
machine.Serial.Configure(machine.UARTConfig{})
|
||||
if !machine.USB.Configured() {
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
}
|
||||
}
|
||||
|
||||
func putchar(c byte) {
|
||||
|
||||
@@ -7,6 +7,7 @@ import (
|
||||
"device/arm"
|
||||
"device/sam"
|
||||
"machine"
|
||||
"machine/usb/cdc"
|
||||
"runtime/interrupt"
|
||||
"runtime/volatile"
|
||||
)
|
||||
@@ -29,10 +30,9 @@ func init() {
|
||||
initADCClock()
|
||||
|
||||
// connect to USB CDC interface
|
||||
cdc.EnableUSBCDC()
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
machine.Serial.Configure(machine.UARTConfig{})
|
||||
if !machine.USB.Configured() {
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
}
|
||||
}
|
||||
|
||||
func putchar(c byte) {
|
||||
|
||||
@@ -7,6 +7,7 @@ import (
|
||||
"device/arm"
|
||||
"device/nrf"
|
||||
"machine"
|
||||
"machine/usb/cdc"
|
||||
"runtime/interrupt"
|
||||
"runtime/volatile"
|
||||
)
|
||||
@@ -28,6 +29,9 @@ func main() {
|
||||
}
|
||||
|
||||
func init() {
|
||||
// connect to USB CDC interface
|
||||
cdc.EnableUSBCDC()
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
machine.Serial.Configure(machine.UARTConfig{})
|
||||
initLFCLK()
|
||||
initRTC()
|
||||
|
||||
@@ -5,8 +5,8 @@ package runtime
|
||||
|
||||
import (
|
||||
"device/arm"
|
||||
|
||||
"machine"
|
||||
"machine/usb/cdc"
|
||||
)
|
||||
|
||||
// machineTicks is provided by package machine.
|
||||
@@ -76,6 +76,8 @@ func machineInit()
|
||||
func init() {
|
||||
machineInit()
|
||||
|
||||
cdc.EnableUSBCDC()
|
||||
machine.USB.Configure(machine.UARTConfig{})
|
||||
machine.Serial.Configure(machine.UARTConfig{})
|
||||
}
|
||||
|
||||
|
||||
@@ -2,7 +2,7 @@
|
||||
"inherits": [
|
||||
"rp2040"
|
||||
],
|
||||
"serial": "uart",
|
||||
"serial-port": ["acm:239a:80f1"],
|
||||
"build-tags": ["feather_rp2040"],
|
||||
"linkerscript": "targets/feather-rp2040.ld",
|
||||
"extra-files": [
|
||||
|
||||
@@ -3,6 +3,7 @@
|
||||
"rp2040"
|
||||
],
|
||||
"build-tags": ["pico"],
|
||||
"serial-port": ["acm:2e8a:0003"],
|
||||
"serial": "uart",
|
||||
"linkerscript": "targets/pico.ld",
|
||||
"extra-files": [
|
||||
|
||||
Reference in New Issue
Block a user