gpio: analog pin support for the bbb

samples/analog.go

@@ -0,0 +1,42 @@
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"time"
+
+	"github.com/kidoman/embd"
+)
+
+func main() {
+	if err := embd.InitGPIO(); err != nil {
+		panic(err)
+	}
+	defer embd.CloseGPIO()
+
+	pin, err := embd.NewAnalogPin(0)
+	if err != nil {
+		panic(err)
+	}
+	defer pin.Close()
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, os.Interrupt, os.Kill)
+	defer signal.Stop(quit)
+
+	for {
+		select {
+		case <-time.After(100 * time.Millisecond):
+			val, err := pin.Read()
+			if err != nil {
+				panic(err)
+			}
+			fmt.Printf("reading: %v\n", val)
+		case <-quit:
+			return
+		}
+	}
+}