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Add ILI9341 TFT driver (SPI) for ATSAMD2x #174

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merged 3 commits into from
Aug 3, 2020
Merged

Add ILI9341 TFT driver (SPI) for ATSAMD2x #174

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d19ef6d
Add ILI9341 TFT driver (SPI) for ATSAMD2x
sago35 Jul 19, 2020
09edb27
Add test
sago35 Jul 19, 2020
5fffacd
Rename
sago35 Jul 30, 2020
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4 changes: 4 additions & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -61,10 +61,14 @@ smoke-test:
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/basic
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/pyportal_boing
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/scroll
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=xiao ./examples/ili9341/scroll
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
@md5sum ./build/test.hex
tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
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29 changes: 29 additions & 0 deletions examples/ili9341/basic/atsamd21.go
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@@ -0,0 +1,29 @@
// +build atsamd21

package main

import (
"machine"

"tinygo.org/x/drivers/ili9341"
)

var (
display = ili9341.NewSpi(
machine.SPI0,
machine.D0,
machine.D1,
machine.D2,
)

backlight = machine.D3
)

func init() {
machine.SPI0.Configure(machine.SPIConfig{
SCK: machine.SPI0_SCK_PIN,
SDO: machine.SPI0_SDO_PIN,
SDI: machine.SPI0_SDI_PIN,
Frequency: 24000000,
})
}
29 changes: 29 additions & 0 deletions examples/ili9341/scroll/atsamd21.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
// +build atsamd21

package main

import (
"machine"

"tinygo.org/x/drivers/ili9341"
)

var (
display = ili9341.NewSpi(
machine.SPI0,
machine.D0,
machine.D1,
machine.D2,
)

backlight = machine.D3
)

func init() {
machine.SPI0.Configure(machine.SPIConfig{
SCK: machine.SPI0_SCK_PIN,
SDO: machine.SPI0_SDO_PIN,
SDI: machine.SPI0_SDI_PIN,
Frequency: 24000000,
})
}
116 changes: 116 additions & 0 deletions ili9341/spi_atsamd21.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,116 @@
// +build atsamd21

package ili9341

import (
"device/sam"
"machine"
)

type spiDriver struct {
bus machine.SPI
}

func NewSpi(bus machine.SPI, dc, cs, rst machine.Pin) *Device {
return &Device{
dc: dc,
cs: cs,
rst: rst,
rd: machine.NoPin,
driver: &spiDriver{
bus: bus,
},
}
}

func (pd *spiDriver) configure(config *Config) {
}

func (pd *spiDriver) write8(b byte) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b))

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}

func (pd *spiDriver) write8n(b byte, n int) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for i, c := 0, n; i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b))
}

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}

func (pd *spiDriver) write8sl(b []byte) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for i, c := 0, len(b); i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(b[i]))
}

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}

func (pd *spiDriver) write16(data uint16) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data)))

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}

func (pd *spiDriver) write16n(data uint16, n int) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for i := 0; i < n; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data)))
}

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}

func (pd *spiDriver) write16sl(data []uint16) {
pd.bus.Bus.CTRLB.ClearBits(sam.SERCOM_SPI_CTRLB_RXEN)

for i, c := 0, len(data); i < c; i++ {
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data[i] >> 8)))
for !pd.bus.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_DRE) {
}
pd.bus.Bus.DATA.Set(uint32(uint8(data[i])))
}

pd.bus.Bus.CTRLB.SetBits(sam.SERCOM_SPI_CTRLB_RXEN)
for pd.bus.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
}
}