程序流程图绘制 - 代码执行步骤可视化

下面是对给出代码的程序流程图：

                                     +-------------------------+
                                     |                         |
                                     |        Start            |
                                     |                         |
                                     +-----------+-------------+
                                                 |
                                                 |
                                                 V
                                   +---------------------+
                                   |                     |
                                   |     Initialize      |
                                   |       P0 = 0xFE     |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |        Delay        |
                                   |    Delay for 50ms   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |      Loop 1-7       |
                                   |   Flow Downwards   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |    Shift Left P0    |
                                   |    by 1 bit (ROL)   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |        Delay        |
                                   |    Delay for 50ms   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |   Loop 1-7          |
                                   |   Flow Upwards      |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |    Shift Right P0   |
                                   |    by 1 bit (ROR)   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |        Delay        |
                                   |    Delay for 50ms   |
                                   |                     |
                                   +-----------+---------+
                                               |
                                               |
                                               V
                                   +---------------------+
                                   |                     |
                                   |    Loop Forever     |
                                   |  Repeat from Loop 1 |
                                   |                     |
                                   +---------------------+

希望这个流程图能帮助你更好地理解程序的运行逻辑。