请问用STM32F101的串口为什么第一数据总丢啊？

只看该作者 · 2008-4-22 17:29

大家好。
请问用STM32F101的串口1向PC机接收数据，为什么第一数据总丢啊？

比如我发送StelCom,PC接收到的是telCom。用串口监控工具发现最后一个数据变成0了。

先谢谢。

串口设置如下：USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_InitStructure.USART_Clock = USART_Clock_Disable;
    USART_InitStructure.USART_CPOL = USART_CPOL_High;
    USART_InitStructure.USART_CPHA = USART_CPHA_2Edge;
    USART_InitStructure.USART_LastBit = USART_LastBit_Disable;