_address _command newChar 15 _address _command newChar _command fill(0) 1 1 Hello, world! newChar EQ newChar b'F' 1 清空第2行 2 1 2 前进 M1 CLOCKWISE 100 M2 CLOCKWISE 100 EQ newChar b'\x15' 1 2 1 2 后退 M1 ANTICLOCKWISE 100 M2 ANTICLOCKWISE 100 EQ newChar b'D' 1 2 1 2 原地左转 M1 ANTICLOCKWISE 100 M2 CLOCKWISE 100 EQ newChar b'C' 1 2 1 2 原地右转 M1 CLOCKWISE 100 M2 ANTICLOCKWISE 100