modify logger

utils/serial.go

@@ -45,7 +45,7 @@ func OpenPort(device string, baudrate int, bytesize byte, stopbits byte) error {
 
 //ReadPort read byte array from port
 func ReadPort() ([]byte, int) {
-	buffer := make([]byte, 256)
+	buffer := make([]byte, 1)
 	if !ServerRunning {
 		return buffer, 0
 	}