Question

STM32 串口接收字符串问题

看网友代码说用IDLE空闲总线可接收不定长字符串，可是我发送一串代码始终只进入了一次RXNE中断，并没有跳入IDLE空闲中断，大神指点下

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Answer 1

此处附上接收中断源码#ifdef _RAISONANCE_void USART_RX_IRQHandler(void) interrupt 28#endifuint8_t cnt_USART ;#ifdef _IAR_SYSTEMS_#pragma vector=30__interrupt void USART_RX_IRQHandler(void)#endif{/* In order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction. */USART_ClearITPendingBit ();//清中断标志if(!USART_GetFlagStatus (USART_FLAG_RXNE))//等待接收完毕{p_rxbuf[cnt_USART++] = USART_ReceiveData8(); //接收数据 if(cnt_USART == 0x0B)cnt_USART = 0xFF ;}// USART_RendCmd(p_rxbuf); //接收11bytes串口指令}