Signal handling in main

rfm69d/rfm69d.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"log"
+	"os"
 
 	"github.com/fulr/rfm69"
 	"github.com/kidoman/embd"
@@ -40,5 +41,13 @@ func main() {
 	}
 	log.Print(rfm)
 
-	rfm.Loop()
+	quit := rfm.Loop()
+
+	sigint := make(chan os.Signal)
+	os.Notify(sigint, os.Interrupt)
+
+	<-sigint
+
+	quit <- 1
+	<-quit
 }

rfm69handler.go

@@ -7,15 +7,22 @@ import (
 )
 
 // Loop is the main receive and transmit handling loop
-func (r *Device) Loop() error {
+func (r *Device) Loop() chan int {
+	quit := make(chan int)
 	c := make(chan Data)
+	go func() {
 		irq := make(chan int)
 
 		r.gpio.Watch(embd.EdgeRising, func(pin embd.DigitalPin) {
 			irq <- 1
 		})
 
-	r.SetMode(RF_OPMODE_RECEIVER)
+		err := r.SetMode(RF_OPMODE_RECEIVER)
+		if err != nil {
+			log.Print(err)
+			return
+		}
+		defer r.SetMode(RF_OPMODE_STANDBY)
 
 		for {
 			select {
@@ -32,9 +39,14 @@ func (r *Device) Loop() error {
 				data, err := r.readFifo()
 				if err != nil {
 					log.Print(err)
-				return err
+					return
 				}
 				log.Print(data)
+			case <-quit:
+				quit <- 1
+				return
 			}
 		}
+	}()
+	return quit
 }