前两天看别的东西了，没来得及写，现在发上来，请看一下。
问题如下：使用USART1发送一串数据(这里是30个)，发送到不定个数量时(有时12，有时18，有时其他)，会产生一个IDLE中断。
main function:
int main(void)
{
#ifdef DEBUG
debug();
#endif
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
GPIO_SetBits(GPIOC,GPIO_Pin_7);
USART_InitStructure.USART_BaudRate = 9600;
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_Low;
USART_InitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_InitStructure.USART_LastBit = USART_LastBit_Disable;
/* Configure USART1 */
USART_Init(USART1, &USART_InitStructure);
/* Enable the USART1 */
USART_Cmd(USART1, ENABLE);
i = USART_ReceiveData(USART1);
USART_SendData(USART1, TxBuffer[TxCounter]);
TxCounter += 1;
USART_ITConfig(USART1,USART_IT_IDLE,ENABLE);
USART_ITConfig(USART1,USART_IT_TC,ENABLE);
while (1)
{
}
}
interrupt function:
void USART1_IRQHandler(void)
{
if((USART_GetITStatus(USART1, USART_IT_TC) != RESET) && (GPIO_ReadOutputDataBit(GPIOC, GPIO_Pin_7) == 1))
{
USART_ClearITPendingBit(USART1, USART_IT_TC);
USART_SendData(USART1, TxBuffer[TxCounter]);
TxCounter += 1;
if(TxCounter > 29)
{
USART_ITConfig(USART1, USART_IT_TC, DISABLE);
TxCounter =0;
}
}
else if(USART_GetITStatus(USART1,USART_IT_IDLE) != RESET)
{
TxCounter = 40;
}
}
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