add zap for default logger

utils/serial.go

@@ -2,10 +2,10 @@ package utils
 
 import (
 	"io"
-	"log"
 	"time"
 
 	"github.com/tarm/serial"
+	"go.uber.org/zap"
 )
 
 var (
@@ -15,13 +15,18 @@ var (
 	stopbits   byte
 	port       *serial.Port
 	portOpened = false
+	Log        *zap.SugaredLogger
 )
 
 const readDuration = 500 * time.Millisecond
 
 // OpenPort open serial port
 func OpenPort(device string, baudrate int, bytesize byte, stopbits byte) error {
-	log.Println("opening port device:", device, ", baudrate=", baudrate, ", bytesize=", bytesize, "stopbits=", stopbits)
+	Log.Infow("opening serial device ",
+		"port", device,
+		"baudrate", baudrate,
+		"bytesize", bytesize,
+		"stopbits", stopbits)
 	config := &serial.Config{Name: device,
 		Baud:        baudrate,
 		Size:        bytesize,
@@ -30,10 +35,10 @@ func OpenPort(device string, baudrate int, bytesize byte, stopbits byte) error {
 	var err error
 	port, err = serial.OpenPort(config)
 	if err != nil {
-		log.Fatalln("error in open serial port ", err)
+		Log.Fatal("error in open serial port ", err)
 		return err
 	}
-	log.Println("opened port ", port)
+	Log.Infof("%s  opened", device)
 	portOpened = true
 	return nil
 }
@@ -46,7 +51,7 @@ func ReadPort() ([]byte, int) {
 	}
 	count, err := port.Read(buffer)
 	if err != nil && err != io.EOF {
-		log.Println("error in read port ", err)
+		Log.Error("error in read port ", err)
 		//TODO: 3 time fail try to
 	}
 	return buffer, count