embd/samples/gpiodetect.go

53 lines
737 B
Go

// +build ignore
package main
import (
"time"
"github.com/kidoman/embd/gpio"
"github.com/kidoman/embd/host"
)
func main() {
h, _, err := host.Detect()
if err != nil {
return
}
var pinNo interface{}
switch h {
case host.BBB:
pinNo = "P9_31"
case host.RPi:
pinNo = 10
default:
panic("host not supported (yet :P)")
}
if err := gpio.Open(); err != nil {
panic(err)
}
defer gpio.Close()
led, err := gpio.NewDigitalPin(pinNo)
if err != nil {
panic(err)
}
defer led.Close()
if err := led.SetDirection(gpio.Out); err != nil {
panic(err)
}
if err := led.Write(gpio.High); err != nil {
panic(err)
}
time.Sleep(1 * time.Second)
if err := led.SetDirection(gpio.In); err != nil {
panic(err)
}
}