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blinker.go
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blinker.go
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/*
A blinker example using go-rpio library.
Requires administrator rights to run
Toggles a LED on physical pin 19 (mcu pin 10)
Connect a LED with resistor from pin 19 to ground.
*/
package main
import (
"fmt"
"github.com/stianeikeland/go-rpio/v4"
"os"
"time"
)
var (
// Use mcu pin 10, corresponds to physical pin 19 on the pi
pin = rpio.Pin(10)
)
func main() {
// Open and map memory to access gpio, check for errors
if err := rpio.Open(); err != nil {
fmt.Println(err)
os.Exit(1)
}
// Unmap gpio memory when done
defer rpio.Close()
// Set pin to output mode
pin.Output()
// Toggle pin 20 times
for x := 0; x < 20; x++ {
pin.Toggle()
time.Sleep(time.Second / 5)
}
}