usart_dma_receive_config(uartx->uart_x,USART_DENR_DISABLE); driver_dma_start(uartx->uart_rx_dma,pbuff,length); USART_STAT0(uartx->uart_x); usart_data_receive(uartx->uart_x); usart_interrupt_flag_clear(uartx->uart_x,USART_INT_FLAG_IDLE); usart_interrupt_enable(uartx->uart_x,USA...
usart_dma_receive_config(uartx->uart_x,USART_DENR_DISABLE); driver_dma_start(uartx->uart_rx_dma,pbuff,length); USART_STAT0(uartx->uart_x); usart_data_receive(uartx->uart_x); usart_interrupt_flag_clear(uartx->uart_x,USART_INT_FLAG_IDLE); usart_interrupt_enable(uartx->uart_x,USA...
DMA_CH3);/* USART DMA enable for transmission and reception */usart_dma_transmit_config(USART0,USART_DENT_ENABLE);//发送/* wait until USART0 TX DMA0 channel transfer complete */while(RESET==dma_flag_get(DMA0,DMA_CH3,DMA_INTF_FTFIF)){}...
usart_dma_enable(USART1, USART_DMA_RECEIVE);usart_enable(USART1);} // 配置DMA void dma_confi...
usart_receive_config(USART2,USART_RECEIVE_ENABLE);//接收使能 usart_enable(USART2);//使能串口 gd...
1. 在数据发送缓冲区内放好要发送的数据,说明:此数据缓冲区的首地址必须要在DMA初始化的时候写入到DMA配置中去。 2. 将数据缓冲区内要发送的数据字节数赋值给发送DMA通道,(串口发送DMA和串口接收DAM不是同一个DMA通道) 3. 开启DMA,一旦开启,则DMA开始发送数据,说明一下:在KEIL调试好的时候,DMA和调试是不同步...
一般方式操作串口时,读写数据都是只操作DR(数据寄存器),虽然它是由两个寄存器组成的,一个给发送用(TDR),一个给接收用(RDR),但是用户只能操作DR寄存。而DMA模式下,串口发送和接收分属两个DMA通道,需要单独配置。 分别配置的代码如下: staticvoidUSART1_Tx_DMA_Config(void){ ...
usart_dma_receive_config(uartx->uart_x,USART_DENR_DISABLE); driver_dma_start(uartx->uart_rx_dma,pbuff,length); USART_STAT0(uartx->uart_x); usart_data_receive(uartx->uart_x); usart_interrupt_flag_clear(uartx->uart_x,USART_INT_FLAG_IDLE); usart_interrupt_enable(uartx->uart_x,USA...
intmain(void){HAL_Init();SystemClock_Config();MX_GPIO_Init();MX_DMA_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */HAL_UART_Transmit(&huart1,(uint8_t*)dat,sizeof(dat),0xFFFF);HAL_UART_Receive_DMA(&huart1,recv_buf,13);//使能DMA接收/* USER CODE END 2 */while(1)...
(USART0, USART_WL_8BIT); // 帧数据字长 usart_stop_bit_set(USART0, USART_STB_1BIT); // 停止位1位 usart_parity_config(USART0, USART_PM_NONE); // 无奇偶校验位 usart_receive_config(USART0, USART_RECEIVE_ENABLE);//使能接收器 usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);//...