在Ardence RTX环境下，使用串口定时收发数据，波特率为112500，传输一个字节本身略小于100微秒，定时周期100微秒，即在示波器中可观察到连续不断地传输字节,Ardence RTX in the circumstances, from time to time to send and receive data using the serial port, baud rate to 112,500, transmission of a byte in itself a little l