mirror of
https://github.com/stianeikeland/go-rpio.git
synced 2025-02-10 11:06:19 +01:00
b79c58a7a3
The behavior of the test is not changed, now it hides BCM bin number and used physical PIN number.
46 lines
764 B
Go
46 lines
764 B
Go
/*
|
|
|
|
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"
|
|
"os"
|
|
"time"
|
|
)
|
|
|
|
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()
|
|
|
|
// Use physical pin 19, mappings to GPIO numers are done internally
|
|
pin, err := rpio.GetBoardPin(19)
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
// Set pin to output mode
|
|
pin.Output()
|
|
|
|
// Toggle pin 20 times
|
|
for x := 0; x < 20; x++ {
|
|
pin.Toggle()
|
|
time.Sleep(time.Second / 5)
|
|
}
|
|
}
|