Display transceiver TX power in the status bar

civdecoder.go

@@ -23,6 +23,8 @@ func (s *civDecoderStruct) decode(d []byte) {
 		s.decodeFreq(payload)
 	case 0x04:
 		s.decodeMode(payload)
+	case 0x14:
+		s.decodePower(payload)
 	case 0x1c:
 		s.decodePTT(payload)
 	}
@@ -85,6 +87,17 @@ func (s *civDecoderStruct) decodeMode(d []byte) {
 	statusLog.reportMode(mode, filter)
 }
 
+func (s *civDecoderStruct) decodePower(d []byte) {
+	if len(d) < 3 || d[0] != 0x0a {
+		return
+	}
+
+	hex := uint16(d[1])<<8 | uint16(d[2])
+	percent := int(math.Round((float64(hex) / 0x0255) * 100))
+
+	statusLog.reportTxPower(percent)
+}
+
 func (s *civDecoderStruct) decodePTT(d []byte) {
 	if len(d) < 2 {
 		return
@@ -114,6 +127,10 @@ func (s *civDecoderStruct) query(st *serialStream) error {
 	if err := st.send([]byte{254, 254, civAddress, 224, 4, 253}); err != nil {
 		return err
 	}
+	// Querying power.
+	if err := st.send([]byte{254, 254, civAddress, 224, 0x14, 0x0a, 253}); err != nil {
+		return err
+	}
 	// Querying PTT.
 	if err := st.send([]byte{254, 254, civAddress, 224, 0x1c, 0, 253}); err != nil {
 		return err

statuslog.go

@@ -14,10 +14,11 @@ type statusLogData struct {
 	line1 string
 	line2 string
 
-	stateStr  string
-	frequency float64
-	mode      string
-	filter    string
+	stateStr   string
+	frequency  float64
+	mode       string
+	filter     string
+	txPowerStr string
 
 	startTime time.Time
 	rttStr    string
@@ -93,6 +94,16 @@ func (s *statusLogStruct) reportPTT(ptt, tune bool) {
 	}
 }
 
+func (s *statusLogStruct) reportTxPower(percent int) {
+	s.mutex.Lock()
+	defer s.mutex.Unlock()
+
+	if s.data == nil {
+		return
+	}
+	s.data.txPowerStr = fmt.Sprint(percent, "%")
+}
+
 func (s *statusLogStruct) clearInternal() {
 	fmt.Printf("%c[2K", 27)
 }
@@ -133,8 +144,12 @@ func (s *statusLogStruct) update() {
 	if s.data.filter != "" {
 		filterStr = " " + s.data.filter
 	}
+	var txPowerStr string
+	if s.data.txPowerStr != "" {
+		txPowerStr = " txpwr " + s.data.txPowerStr
+	}
 	s.data.line1 = fmt.Sprint("state ", s.data.stateStr, " freq: ", fmt.Sprintf("%f", s.data.frequency/1000000),
-		modeStr, filterStr)
+		modeStr, filterStr, txPowerStr)
 
 	up, down, lost, retransmits := netstat.get()
 	lostStr := "0"