func outputLoop(sig chan struct{}) {
pin, err := rpi.OpenPin(rpi.GPIO17, gpio.ModeOutput)
if err != nil {
log.Fatalf("Can't open pin: %s", err.Error())
}
defer pin.Close()
pin.Set()
for {
select {
case <-sig:
pin.Clear()
time.Sleep(time.Millisecond * 300)
pin.Set()
time.Sleep(time.Millisecond * 300)
}
}
}
func init() {
openGarage = openWithGPIO
mustPin := func(num int, mode gpio.Mode) gpio.Pin {
pin, err := rpi.OpenPin(num, mode)
if err != nil {
log.Fatal("error opening pin %d for %v: %v", num, mode, err)
}
return pin
}
red = mustPin(rpi.GPIO23, gpio.ModeOutput) // red blinky I'm-alive LED
yellow = mustPin(rpi.GPIO22, gpio.ModeOutput) // yellow while-pressed LED
open = mustPin(rpi.GPIO_P1_12, gpio.ModeOutput) // to make the MOSFET close the garage circuit
button = mustPin(rpi.GPIO25, gpio.ModeInput) // button to toggle garage now
if err := button.BeginWatch(gpio.EdgeBoth, onButtonUpDown); err != nil {
log.Fatalf("button BeginWatch: %v", err)
}
go blinkRedHealthy()
go waitForButtonPress()
}