73 lines
1.7 KiB
Go
73 lines
1.7 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/st7789"
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"tinygo.org/x/tinydraw"
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)
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func main() {
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machine.SPI0.Configure(machine.SPIConfig{
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SCK: machine.P1_01,
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SDO: machine.P1_02,
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Frequency: 8000000,
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Mode: 0,
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})
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display := st7789.New(machine.SPI0,
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machine.P1_15, // TFT_RESET
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machine.P1_13, // TFT_DC
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machine.P0_10, // TFT_CS
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machine.P0_09) // TFT_LITE
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display.Configure(st7789.Config{
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Rotation: st7789.ROTATION_90,
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Width: 135,
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Height: 240,
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RowOffset: 40,
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ColumnOffset: 53,
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})
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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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white := color.RGBA{255, 255, 255, 255}
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circle := color.RGBA{0, 100, 250, 255}
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ring := color.RGBA{200, 0, 0, 255}
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display.FillScreen(white)
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// draw a circle for each button on the 240x135 display
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tinydraw.FilledCircle(&display, 60, 67, 14, circle) // B (left)
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tinydraw.FilledCircle(&display, 120, 67, 14, circle) // rotary button (center)
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tinydraw.FilledCircle(&display, 180, 67, 14, circle) // A (right)
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for {
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if !btnB.Get() {
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tinydraw.Circle(&display, 60, 67, 16, ring)
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} else {
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tinydraw.Circle(&display, 60, 67, 16, white)
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}
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if !btnRot.Get() {
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tinydraw.Circle(&display, 120, 67, 16, ring)
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} else {
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tinydraw.Circle(&display, 120, 67, 16, white)
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}
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if !btnA.Get() {
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tinydraw.Circle(&display, 180, 67, 16, ring)
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} else {
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tinydraw.Circle(&display, 180, 67, 16, white)
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}
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time.Sleep(50 * time.Millisecond)
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}
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}
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