STM8单片机串口通讯

只看该作者 · 2010-4-8 21:00

UART1_SendData8(0xaa);
while(UART1_GetITStatus(UART1_FLAG_TC)==SET);
UART1_ClearITPendingBit(UART1_FLAG_TC);

UART1_SendData8(0x55);
while(UART1_GetITStatus(UART1_FLAG_TC)==SET);
UART1_ClearITPendingBit(UART1_FLAG_TC);

UART1_SendData8(0x22);
while(UART1_GetITStatus(UART1_FLAG_TC)==SET);
UART1_ClearITPendingBit(UART1_FLAG_TC);

用串口调试助手接收到数据如下：
AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55 22 55 22 55 22 AA 22 AA 55 AA 55 AA 55 22 55 22 AA 22 AA 22 AA 55 AA 55

请问如何解释？

只看该作者 · 2010-4-9 13:40

首先你要贴全你的代码
第二，你的代码
UART1_SendData8(0xaa);
while(UART1_GetITStatus(UART1_FLAG_TC)==SET);
^^^^^
UART1_ClearITPendingBit(UART1_FLAG_TC);
^^^^^^^^^^你开中断了吗，你这段代码是在中断里面吗？

只看该作者 · 2010-7-21 14:01

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STM8单片机串口通讯

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