mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-06 16:03:41 +00:00
Yurii Soldak
61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
// This example shows how to use 128x64 display over I2C
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// Tested on Seeeduino XIAO Expansion Board https://wiki.seeedstudio.com/Seeeduino-XIAO-Expansion-Board/
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//
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// According to manual, I2C address of the display is 0x78, but that's 8-bit address.
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// TinyGo operates on 7-bit addresses and respective 7-bit address would be 0x3C, which we use below.
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//
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// To learn more about different types of I2C addresses, please see following page
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// https://www.totalphase.com/support/articles/200349176-7-bit-8-bit-and-10-bit-I2C-Slave-Addressing
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package main
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import (
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"machine"
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"image/color"
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"time"
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"tinygo.org/x/drivers/ssd1306"
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)
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func main() {
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machine.I2C0.Configure(machine.I2CConfig{
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Frequency: machine.TWI_FREQ_400KHZ,
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})
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display := ssd1306.NewI2C(machine.I2C0)
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display.Configure(ssd1306.Config{
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Address: 0x3C,
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Width: 128,
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Height: 64,
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})
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display.ClearDisplay()
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x := int16(0)
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y := int16(0)
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deltaX := int16(1)
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deltaY := int16(1)
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for {
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pixel := display.GetPixel(x, y)
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c := color.RGBA{255, 255, 255, 255}
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if pixel {
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c = color.RGBA{0, 0, 0, 255}
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}
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display.SetPixel(x, y, c)
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display.Display()
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x += deltaX
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y += deltaY
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if x == 0 || x == 127 {
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deltaX = -deltaX
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}
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if y == 0 || y == 63 {
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deltaY = -deltaY
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}
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time.Sleep(1 * time.Millisecond)
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}
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}
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