Refactoring

device.go

@@ -10,7 +10,6 @@ import (
 
 const (
 	spiPath = "/dev/spidev0.0"
-	irqPin  = gpio.GPIO25
 )
 
 // Device RFM69 Device
@@ -42,7 +41,7 @@ type Data struct {
 
 // NewDevice creates a new device
 func NewDevice(nodeID, networkID byte, isRfm69HW bool) (*Device, error) {
-	pin, err := gpio.OpenPin(irqPin, gpio.ModeInput)
+	pin, err := getPin()
 	if err != nil {
 		return nil, err
 	}

handler.go

@@ -7,14 +7,14 @@ import (
 )
 
 // Loop is the main receive and transmit handling loop
-func (r *Device) Loop() (chan Data, chan int) {
-	quit := make(chan int)
-	ch := make(chan Data, 5)
+func (r *Device) Loop() (chan *Data, chan bool) {
+	quit := make(chan bool)
+	ch := make(chan *Data, 5)
 	go r.loopInternal(ch, quit)
 	return ch, quit
 }
 
-func (r *Device) loopInternal(ch chan Data, quit chan int) {
+func (r *Device) loopInternal(ch chan *Data, quit chan bool) {
 	irq := make(chan int)
 	r.gpio.BeginWatch(gpio.EdgeRising, func() {
 		irq <- 1
@@ -41,7 +41,7 @@ func (r *Device) loopInternal(ch chan Data, quit chan int) {
 			if err != nil {
 				log.Fatal(err)
 			}
-			err = r.writeFifo(&dataToTransmit)
+			err = r.writeFifo(dataToTransmit)
 			if err != nil {
 				log.Fatal(err)
 			}
@@ -49,7 +49,9 @@ func (r *Device) loopInternal(ch chan Data, quit chan int) {
 			if err != nil {
 				log.Fatal(err)
 			}
+
 			<-irq
+
 			err = r.SetModeAndWait(RF_OPMODE_STANDBY)
 			if err != nil {
 				log.Fatal(err)
@@ -78,13 +80,13 @@ func (r *Device) loopInternal(ch chan Data, quit chan int) {
 				log.Print(err)
 				return
 			}
-			ch <- data
+			ch <- &data
 			err = r.SetMode(RF_OPMODE_RECEIVER)
 			if err != nil {
 				log.Fatal(err)
 			}
 		case <-quit:
-			quit <- 1
+			quit <- true
 			return
 		}
 	}

pin.go

@@ -0,0 +1,13 @@
+// +build !linux
+
+package rfm69
+
+import (
+	"errors"
+
+	"github.com/davecheney/gpio"
+)
+
+func getPin() (gpio.Pin, error) {
+	return nil, errors.New("not implemented")
+}

pin_linux.go

@@ -0,0 +1,11 @@
+package rfm69
+
+import "github.com/davecheney/gpio"
+
+const (
+	irqPin = gpio.GPIO25
+)
+
+func getPin() (gpio.Pin, error) {
+	return gpio.OpenPin(irqPin, gpio.ModeInput)
+}