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samd5x spi: use standard spi driver

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This commit is contained in:
sago35
2020-10-26 18:35:55 +09:00
parent 06ab27300c
commit d9700779f7
2 changed files with 14 additions and 70 deletions
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ili9341/ili9341.go
+3 -1
View File
@@ -300,7 +300,9 @@ func (d *Device) sendCommand(cmd byte, data []byte) {
d.dc.Low() d.dc.Low()
d.driver.write8(cmd) d.driver.write8(cmd)
d.dc.High() d.dc.High()
d.driver.write8sl(data) if data != nil && len(data) > 0 {
d.driver.write8sl(data)
}
d.endWrite() d.endWrite()
} }
ili9341/spi_atsamd51.go
+11 -69
View File
@@ -3,7 +3,6 @@
package ili9341 package ili9341
import ( import (
"device/sam"
"machine" "machine"
) )
@@ -11,6 +10,8 @@ type spiDriver struct {
bus machine.SPI bus machine.SPI
} }
var txBuf [2]uint8
func NewSPI(bus machine.SPI, dc, cs, rst machine.Pin) *Device { func NewSPI(bus machine.SPI, dc, cs, rst machine.Pin) *Device {
return &Device{ return &Device{
dc: dc, dc: dc,
@@ -27,90 +28,31 @@ func (pd *spiDriver) configure(config *Config) {
} }
func (pd *spiDriver) write8(b byte) { func (pd *spiDriver) write8(b byte) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN) pd.bus.Transfer(b)
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b))
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
}
} }
func (pd *spiDriver) write8n(b byte, n int) { func (pd *spiDriver) write8n(b byte, n int) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN) panic("not impl")
for i, c := 0, n; i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b))
}
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
}
} }
func (pd *spiDriver) write8sl(b []byte) { func (pd *spiDriver) write8sl(b []byte) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN) pd.bus.Tx(b, nil)
for i, c := 0, len(b); i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b[i]))
}
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
}
} }
func (pd *spiDriver) write16(data uint16) { func (pd *spiDriver) write16(data uint16) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN) txBuf[0] = uint8(data >> 8)
txBuf[1] = uint8(data)
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) { pd.bus.Tx(txBuf[:], nil)
}
pd.bus.Bus.DATA.Set(uint32(uint8(data >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data)))
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
}
} }
func (pd *spiDriver) write16n(data uint16, n int) { func (pd *spiDriver) write16n(data uint16, n int) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN) for i, c := 0, n; i < c; i++ {
pd.write16(data)
for i := 0; i < n; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data)))
}
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
} }
} }
func (pd *spiDriver) write16sl(data []uint16) { func (pd *spiDriver) write16sl(data []uint16) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for i, c := 0, len(data); i < c; i++ { for i, c := 0, len(data); i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) { pd.write16(data[i])
}
pd.bus.Bus.DATA.Set(uint32(uint8(data[i] >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPIM_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data[i])))
}
pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPIM_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPIM_SYNCBUSY_CTRLB) {
} }
} }