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machine/samd21,samd51: remove use of binary package to avoid reflection and reduce binary size

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Signed-off-by: Ron Evans <ron@hybridgroup.com>
This commit is contained in:
Ron Evans
2019-09-24 17:32:17 +02:00
committed by Ayke
parent 582457b81e
commit c16e07469b
3 changed files with 118 additions and 112 deletions
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src/machine/machine_atsamd21.go
+15 -14
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@@ -8,10 +8,8 @@
package machine
import (
"bytes"
"device/arm"
"device/sam"
"encoding/binary"
"errors"
"unsafe"
)
@@ -1607,24 +1605,27 @@ func handleStandardSetup(setup usbSetup) bool {
func cdcSetup(setup usbSetup) bool {
if setup.bmRequestType == usb_REQUEST_DEVICETOHOST_CLASS_INTERFACE {
if setup.bRequest == usb_CDC_GET_LINE_CODING {
buf := bytes.NewBuffer(make([]byte, 0, 7))
binary.Write(buf, binary.LittleEndian, usbLineInfo.dwDTERate)
binary.Write(buf, binary.LittleEndian, usbLineInfo.bCharFormat)
binary.Write(buf, binary.LittleEndian, usbLineInfo.bParityType)
binary.Write(buf, binary.LittleEndian, usbLineInfo.bDataBits)
b := make([]byte, 0, 7)
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, buf.Bytes())
sendUSBPacket(0, b)
return true
}
}
if setup.bmRequestType == usb_REQUEST_HOSTTODEVICE_CLASS_INTERFACE {
if setup.bRequest == usb_CDC_SET_LINE_CODING {
buf := bytes.NewBuffer(receiveUSBControlPacket())
binary.Read(buf, binary.LittleEndian, &(usbLineInfo.dwDTERate))
binary.Read(buf, binary.LittleEndian, &(usbLineInfo.bCharFormat))
binary.Read(buf, binary.LittleEndian, &(usbLineInfo.bParityType))
binary.Read(buf, binary.LittleEndian, &(usbLineInfo.bDataBits))
b := receiveUSBControlPacket()
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 {
@@ -1814,7 +1815,7 @@ func sendConfiguration(setup usbSetup) {
sz := uint16(configDescriptorSize + cdcSize)
config := NewConfigDescriptor(sz, 2)
buf := make([]byte, 0, sz)
buf := make([]byte, 0)
buf = append(buf, config.Bytes()...)
buf = append(buf, cdc.Bytes()...)