fix mmissing defer for close channel and move make channel up earlier

.github/workflows/build.yml

@@ -36,9 +36,9 @@ jobs:
         run: |
           mkdir -p build
           if [ "${{ matrix.goos }}" == "windows" ]; then
-            GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -o build/tecamino-driver-artNet-${{ matrix.goos }}-${{ matrix.goarch }}.exe main.go
+            GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -ldflags="-s -w" -trimpath -o build/tecamino-driver-artNet-${{ matrix.goos }}-${{ matrix.goarch }}.exe main.go
           else
-            GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -o build/tecamino-driver-artNet-${{ matrix.goos }}-${{ matrix.goarch }} main.go
+            GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }} go build -ldflags="-s -w" -trimpath -o build/tecamino-driver-artNet-${{ matrix.goos }}-${{ matrix.goarch }} main.go
           fi
 
       - name: Upload artifacts

.gitignore

@@ -1,3 +1,4 @@
+.DS_Store
 *.cfg
 *.log
 artNetDriver-arm64

models/bus.go

@@ -107,9 +107,11 @@ func (b *Bus) Start(log *logging.Logger) error {
 	var ctx context.Context
 	ctx, b.Watchdog = context.WithCancel(context.Background())
 
+	b.Send = make(chan *DMX, 1024)
+
 	go func() {
 		var interval time.Duration = 10 * time.Second
-		log.Info("bus.Start", fmt.Sprintf("device:%s ip:%s watchdog stopped", b.Name, b.Ip))
+		log.Info("bus.Start", fmt.Sprintf("device:%s ip:%s watchdog starting", b.Name, b.Ip))
 		for {
 			select {
 			case <-ctx.Done():
@@ -126,6 +128,8 @@ func (b *Bus) Start(log *logging.Logger) error {
 					interval = 5 * time.Second
 				} else {
 					b.Reachable = true
+					// send data as a heartbeat for she ArtNet Protocol
+					b.Send <- b.Data
 					log.Info("bus.Start", fmt.Sprintf("device:%s ip:%s watchdog running", b.Name, b.Ip))
 					interval = 30 * time.Second
 				}
@@ -143,12 +147,11 @@ func (b *Bus) Start(log *logging.Logger) error {
 		return err
 	}
 
-	b.Send = make(chan *DMX, 1024)
-
 	go func() {
 		defer conn.Close()
 		//close send channel
-		close(b.Send)
+		defer close(b.Send)
+
 		for send := range b.Send {
 			_, err = conn.Write(NewArtNetPackage(send))
 			if err != nil {