Esp32s3 implement spi

[dimajolkin]

Hi! I tried to create a SPI, and it seems to have worked. I tested it on esp32s3-wroom1
I ran LILYGO T-Deck Plus.

It also changed to a gradual frequency increase. My esp32s3-wroom1 would freeze if I set it to 240 immediately.

[dgryski]

/cc @ysoldak

[ysoldak]

Sorry, I have esp32c3 only, not "s", otherwise would help testing, of course.

[deadprogram]

I have a esp32-s3 to test with, and will take a look.

[deadprogram]

So far I have not been able to get SPI working on my Xiao ESP32s3 with this PR.

Any thoughts on this @dimajolkin ?

[dimajolkin]

I will check docs for this MC) And order this for test

@deadprogram I made a quick fix to the frequency calculation. Can you check it?

[dimajolkin]

I've placed an order for this MK. When it arrives, I'll debug it for him too, if the fix doesn't work.

Additions:

const (
	TFT_SCLK machine.Pin = 7 // SCK - Serial Clock (GPIO7)
	TFT_MOSI machine.Pin = 8 // MOSI / SDO (GPIO8)
)

func main() {
	spi := machine.SPI1
	spi.Configure(machine.SPIConfig{
		SCK:       TFT_SCLK,
		SDO:       TFT_MOSI,
	})

7, 8 - pins tested too

[deadprogram]

@dimajolkin looks like you need to run the linter:

Unformatted:
  src/machine/machine_esp32s3_spi.go
make: *** [GNUmakefile:207: fmt-check] Error 1

[dm-vev]

Hi, thanks for the SPI work and the T-Deck test.

Could you please share the test code you used to drive the display on the T-Deck (the one shown in the screenshot)?
I’d like to use the same code for testing.

[dimajolkin]

Hi, thanks for the SPI work and the T-Deck test.

Could you please share the test code you used to drive the display on the T-Deck (the one shown in the screenshot)?

I’d like to use the same code for testing.

Hi, for tdeck need specific driver, you can find here:
https://github.com/dimajolkin/tinygo-lilygo-drivers

[dimajolkin]

[dimajolkin]

package main

import (
	"image/color"
	"machine"
	"time"

	"tinygo.org/x/drivers/st7789"
)

var (
	RED     = color.RGBA{255, 0, 0, 255}
	GREEN   = color.RGBA{0, 255, 0, 255}
	BLUE    = color.RGBA{0, 0, 255, 255}
	WHITE   = color.RGBA{255, 255, 255, 255}
	BLACK   = color.RGBA{0, 0, 0, 255}
	YELLOW  = color.RGBA{255, 255, 0, 255}
	CYAN    = color.RGBA{0, 255, 255, 255}
	MAGENTA = color.RGBA{255, 0, 255, 255}
)

const (
	TFT_CS  machine.Pin = machine.D1 // Chip Select
	TFT_DC  machine.Pin = machine.D2 // Data/Command
	TFT_RST machine.Pin = machine.D3 // Reset
	TFT_BLK machine.Pin = machine.D4 // Reset
)

func main() {
	led := machine.D6
	led.Configure(machine.PinConfig{Mode: machine.PinOutput})

	spi := machine.SPI0
	spi.Configure(machine.SPIConfig{})

	display := st7789.New(spi, TFT_RST, TFT_DC, TFT_CS, TFT_BLK)
	display.Configure(st7789.Config{
		Width:  240,
		Height: 320,
	})

	for {
		led.Low()
		time.Sleep(time.Millisecond * 100)
		testBasicColors(display)
		led.High()
		time.Sleep(time.Millisecond * 100)
	}
}

// Test basic color fills
func testBasicColors(display st7789.Device) {
	colors := []color.RGBA{RED, GREEN, BLUE, WHITE, BLACK, YELLOW, CYAN, MAGENTA}
	for _, col := range colors {
		display.FillScreen(col)
		time.Sleep(500 * time.Millisecond)
	}
}

[dimajolkin]

@deadprogram
Hi! I got the esp32s3 and it worked. There was a problem with the default pins. Now it works on both devices.
I separated esp32s3-wroom1, but now it behaves like an esp32s3.

[deadprogram]

Thanks for all your work on this PR. Last thing would be to add this to the smoke tests here: https://github.com/tinygo-org/tinygo/blob/dev/GNUmakefile#L907-L926

Probably building the examples/mcp3008 would be the best one.

[dimajolkin]

@deadprogram Look, the tests are passing, but there are some random failures..

[deadprogram]

Thank you very much for all your work on this @dimajolkin now squash/merging.

[dimajolkin]

Thank you, I appreciate it)