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ili9341, ili9342: add support for m5stack-core2 #341

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Merged
deadprogram merged 1 commit into from
Nov 20, 2021
Merged

ili9341, ili9342: add support for m5stack-core2 #341

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49 changes: 49 additions & 0 deletions examples/ili9341/initdisplay/m5stack_core2.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,49 @@
//go:build m5stack_core2
// +build m5stack_core2

package initdisplay

import (
"image/color"
"machine"

axp192 "tinygo.org/x/drivers/axp192/m5stack-core2-axp192"
"tinygo.org/x/drivers/i2csoft"
"tinygo.org/x/drivers/ili9341"
)

// InitDisplay initializes the display of each board.
func InitDisplay() *ili9341.Device {
machine.SPI2.Configure(machine.SPIConfig{
SCK: machine.LCD_SCK_PIN,
SDO: machine.LCD_SDO_PIN,
SDI: machine.LCD_SDI_PIN,
Frequency: 40e6,
})

i2c := i2csoft.New(machine.SCL0_PIN, machine.SDA0_PIN)
i2c.Configure(i2csoft.I2CConfig{Frequency: 100e3})

axp := axp192.New(i2c)
led := axp.LED
led.Low()

display := ili9341.NewSPI(
machine.SPI2,
machine.LCD_DC_PIN,
machine.LCD_SS_PIN,
machine.NoPin,
)

// configure display
display.Configure(ili9341.Config{
Width: 320,
Height: 240,
DisplayInversion: true,
})
display.FillScreen(color.RGBA{255, 255, 255, 255})

display.SetRotation(ili9341.Rotation0Mirror)

return display
}
36 changes: 27 additions & 9 deletions ili9341/ili9341.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,9 +8,10 @@ import (
)

type Config struct {
Width int16
Height int16
Rotation Rotation
Width int16
Height int16
Rotation Rotation
DisplayInversion bool
}

type Device struct {
Expand Down Expand Up @@ -103,10 +104,19 @@ func (d *Device) Configure(config Config) {
0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00,
GMCTRN1, 15, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, // Set Gamma
0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F,
}

if config.DisplayInversion {
initCmd = append(initCmd, []byte{
INVON, 0x80,
}...)
}

initCmd = append(initCmd, []byte{
SLPOUT, 0x80, // Exit Sleep
DISPON, 0x80, // Display on
0x00, // End of list
}
}...)
for i, c := 0, len(initCmd); i < c; {
cmd := initCmd[i]
if cmd == 0x00 {
Expand Down Expand Up @@ -239,14 +249,22 @@ func (d *Device) GetRotation() Rotation {
// SetRotation changes the rotation of the device (clock-wise)
func (d *Device) SetRotation(rotation Rotation) {
madctl := uint8(0)
switch rotation % 4 {
case 0:
switch rotation % 8 {
case Rotation0:
madctl = MADCTL_MX | MADCTL_BGR
case 1:
case Rotation90:
madctl = MADCTL_MV | MADCTL_BGR
case 2:
case Rotation180:
madctl = MADCTL_MY | MADCTL_BGR
case 3:
case Rotation270:
madctl = MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR
case Rotation0Mirror:
madctl = MADCTL_BGR
case Rotation90Mirror:
madctl = MADCTL_MY | MADCTL_MV | MADCTL_BGR
case Rotation180Mirror:
madctl = MADCTL_MX | MADCTL_MY | MADCTL_BGR
case Rotation270Mirror:
madctl = MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR
}
d.sendCommand(MADCTL, []uint8{madctl})
Expand Down
5 changes: 5 additions & 0 deletions ili9341/registers.go
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Original file line number Diff line number Diff line change
Expand Up @@ -81,4 +81,9 @@ const (
Rotation90 Rotation = 1 // 90 degrees clock-wise rotation
Rotation180 Rotation = 2
Rotation270 Rotation = 3

Rotation0Mirror Rotation = 4
Rotation90Mirror Rotation = 5
Rotation180Mirror Rotation = 6
Rotation270Mirror Rotation = 7
)