mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Anton Fisher
52 lines
1.3 KiB
Go
52 lines
1.3 KiB
Go
package main
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import (
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"time"
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"machine"
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"tinygo.org/x/drivers/is31fl3731"
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)
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// I2CAddress -- address of led matrix
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var I2CAddress uint8 = is31fl3731.I2C_ADDRESS_74
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func main() {
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bus := machine.I2C0
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err := bus.Configure(machine.I2CConfig{})
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if err != nil {
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println("could not configure I2C:", err)
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return
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}
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// Create driver for Adafruit 15x7 CharliePlex LED Matrix FeatherWing
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// (CharlieWing): https://www.adafruit.com/product/3163
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ledMatrix := is31fl3731.NewAdafruitCharlieWing15x7(bus, I2CAddress)
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err = ledMatrix.Configure()
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if err != nil {
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println("could not configure is31fl3731 driver:", err)
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return
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}
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// Fill the whole matrix on the frame #0 (visible by default)
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ledMatrix.Fill(is31fl3731.FRAME_0, uint8(3))
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// Draw couple pixels on the frame #1 (not visible yet)
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ledMatrix.DrawPixelXY(is31fl3731.FRAME_1, uint8(0), uint8(0), uint8(10))
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ledMatrix.DrawPixelXY(is31fl3731.FRAME_1, uint8(14), uint8(6), uint8(10))
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// There are 8 frames available, it's a good idea to draw on an invisible
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// frame and then switch to that frame to reduce flickering. Switch between
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// frame #0 and #1 in a loop to show animation:
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for {
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println("show frame #0...")
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ledMatrix.SetActiveFrame(is31fl3731.FRAME_0)
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time.Sleep(time.Second * 3)
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println("show frame #1...")
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ledMatrix.SetActiveFrame(is31fl3731.FRAME_1)
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time.Sleep(time.Second * 3)
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}
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}
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