if (HAL_UART_Receive(&hlpuart1, rec_buf, 1, 0) == HAL_OK) HAL_UART_Transmit(&huart1, rec_buf, 1, 0); //HAL_Delay(500); } } DMA+空闲中断: 第一步先测试DMA回环 开启DMA接收HAL_UART_Receive_DMA(&huart1, (uint8_t *)&rxbuf, 100); 打开空闲中断__HAL_UART_ENABLE_IT(&hua...
LPUART_ClearITPendingBit(LPUART1, LPUART_LPUIF_RXIF);LPUART_ITConfig(LPUART1, LPUART_LPUCON_RXIE, ENABLE); e. 定义RX缓存,然后编写中断服务函数: charrxDataBuf[10], cnt =0;uint8_tcnt_flag =0;voidLPUART1_IRQHandler(){if(LPUART_GetFlagStatus(LPUART1, LPUART_LPUSTA_START)) {LPUART_ClearFlagS...
清除接收标志并打开接收中断: LPUART_ClearITPendingBit(LPUART1,LPUART_LPUIF_RXIF); LPUART_ITConfig(LPUART1,LPUART_LPUCON_RXIE,ENABLE); e. 定义RX缓存,然后编写中断服务函数: charrxDataBuf[10],cnt=0; uint8_tcnt_flag=0; voidLPUART1_IRQHandler() { if(LPUART_GetFlagStatus(LPUART1,LPUART_LPUSTA_S...