70 lines
1.2 KiB
Go
70 lines
1.2 KiB
Go
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package main
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import (
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"image/color"
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"machine"
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"time"
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"tinygo.org/x/drivers/ws2812"
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)
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const (
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Red = iota
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Green
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Blue
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Yellow
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Cyan
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Purple
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White
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Off
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)
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var colors = [...]color.RGBA{
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{255, 0, 0, 255}, // Red
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{0, 255, 0, 255}, // Green
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{0, 0, 255, 255}, // Blue
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{255, 255, 0, 255}, // Yellow
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{0, 255, 255, 255}, // Cyan
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{255, 0, 255, 255}, // Purple
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{255, 255, 255, 255}, // White
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{0, 0, 0, 255}, // Off
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}
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func main() {
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// WS2812 LEDs are on pin P1_11
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neo := machine.P1_11
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neo.Configure(machine.PinConfig{Mode: machine.PinOutput})
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leds := ws2812.New(neo)
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ledColors := make([]color.RGBA, 2)
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// buttons: active LOW (internal pull-up)
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btnA := machine.P1_06
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btnB := machine.P1_04
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btnRot := machine.P0_22 // rotary encoder push button
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btnA.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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btnB.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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btnRot.Configure(machine.PinConfig{Mode: machine.PinInputPullup})
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c := Off
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for {
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if !btnA.Get() {
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c = Red
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}
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if !btnB.Get() {
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c = Blue
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}
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if !btnRot.Get() {
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c = Green
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}
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for i := range ledColors {
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ledColors[i] = colors[c]
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}
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leds.WriteColors(ledColors)
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time.Sleep(30 * time.Millisecond)
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}
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}
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