mirror of https://github.com/kidoman/embd
60 lines
833 B
Go
60 lines
833 B
Go
// +build ignore
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// Universal LED blinker, works OOTB on a RPi / BBB.
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package main
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import (
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"flag"
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"os"
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"os/signal"
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"time"
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"github.com/kidoman/embd"
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_ "github.com/kidoman/embd/host/all"
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)
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func main() {
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flag.Parse()
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panicIf(embd.InitLED())
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defer embd.CloseLED()
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led, err := embd.NewLED(ledToBlink())
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panicIf(err)
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defer led.Off()
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quit := make(chan os.Signal, 1)
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signal.Notify(quit, os.Interrupt, os.Kill)
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defer signal.Stop(quit)
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for {
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select {
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case <-time.After(200 * time.Millisecond):
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panicIf(led.Toggle())
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case <-quit:
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return
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}
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}
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}
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func ledToBlink() string {
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host, _, err := embd.DetectHost()
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panicIf(err)
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switch host {
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case embd.HostRPi:
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return "LED0"
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case embd.HostBBB:
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return "USR3"
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}
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panic("Unsupported host")
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}
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func panicIf(err error) {
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if err != nil {
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panic(err)
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}
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}
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