串口接收实例——空闲中断
【摘要】
//先看51的
void UARTInterrupt(void) interrupt 4
{
if(RI)
{
RI = 0;
UsartReceive[U...
//先看51的
void UARTInterrupt(void) interrupt 4
{
if(RI)
{
RI = 0;
UsartReceive[UsartReadCnt] = SBUF;
UsartReadCnt++;
if(UsartReadCnt > ReadLength-2)//防止溢出
{
UsartReadCnt = 0;
}
}
}
void Timer0Interrupt(void) interrupt 1
{
TH0 = (65536 - 5000) / 256;
TL0 = (65536 - 5000) % 256; //定时5ms
if(UsartReadCnt != 0)//接收到数据
{
if(UsartIdleCnt == UsartReadCnt)
{
UsartReadCntCopy = UsartReadCnt;
UsartReadCnt = 0;
UsartIdleCnt = 0;
UsartFlag = 1;
}
else
{
UsartIdleCnt = UsartReadCnt;
}
}
}
...
if(UsartFlag == 1)
{
UsartFlag = 0;
...
}
...
//STM32的
void USART1_IQRHandler(void)
{
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)//表示接收到数据
{
Usart1ReadBuff[Usart1ReadCnt++] = USART_ReceiveData(USART1);
if(Usart1ReadCnt > UsartReadLen - 10)
{
Usart1ReadCnt = 0;
}
}
}
void TIM2_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2, TIM_IT_Update) == SET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
if(Usart1ReadCnt != 0)
{
if(Usart1ReadCnt == Usart1IdleCnt)
{
Usart1ReadCntCpoy = Usart1ReadCnt;
Usart1ReadCnt = 0;
Usart1IdleCnt = 0;
Usart1ReadFlag = 1;
}
}
}
}
...
if(Usart1ReadFLag == 1)
{
Usart1ReadFlag = 0;
...
}
...
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文章来源: recclay.blog.csdn.net,作者:ReCclay,版权归原作者所有,如需转载,请联系作者。
原文链接:recclay.blog.csdn.net/article/details/82424958
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