with data check befor write to serial

main.cpp

@@ -43,6 +43,12 @@ void sendData(uint8_t *data, size_t len) {
 	if (result != HasReturnvaluesIF::RETURN_OK) {
 		return;
 	}
+	for (size_t i = 0; i < writtenLen; i++)
+	    {
+	    	Serial.print("buffer is: ");Serial.println(buffer[i]);
+
+
+	    }
 	Serial.write(buffer, writtenLen);
 }