I've got a Feather nRF23840 Express with the built in neopixel that I can not make light with ws2812.

I don't believe I have anything wrong in my code.

package main

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

  "tinygo.org/x/drivers/ws2812"
)

var neo machine.Pin

func main() {
  neo = machine.WS2812
  neo.Configure(machine.PinConfig{Mode: machine.PinOutput})

  ws := ws2812.NewWS2812(neo)
  time.Sleep(500 * time.Millisecond)
  for {
    ws.WriteColors([]color.RGBA{{255, 0, 0, 255}})
    time.Sleep(2500 * time.Millisecond)

    ws.WriteColors([]color.RGBA{{0, 255, 0, 255}})
    time.Sleep(2500 * time.Millisecond)

    ws.WriteColors([]color.RGBA{{0, 0, 255, 255}})
    time.Sleep(2500 * time.Millisecond)
  }
}

I can not find a reference now, but I thought I saw that this board used a WS2812B, and digging around I found that the timings on a B are different than rev A; datasheet adafruit reference code and thought perhaps that was the issue.

I grabbed the driver code and fiddled with the write intervals in an attempt to get it working but did not succeed. I think I understand what is happening in that codegen but I lack a lot of peripheral knowledge here.

It does work when using that Adafruit library and flashing from Arduino IDE.

Thanks!