2、FIFO mode enabled An overrun error occurs when the shift register is ready to be transferred and the receive FIFO is full. Data can not be transferred from the shift register to the USART_RDR register until there is one free location in the RXFIFO. The RXFNE flag is set when the RXF...
Init.FIFOMode = DMA_FIFOMODE_DISABLE;if (HAL_DMA_Init( hdma_uart4_rx) != HAL_OK){ ...
rtt_printf（“uart1 SendFifo has no spacern”）;//程序走到这里，意味着FIFO缓冲不足，会出现发送...
static uint8_t g_TxBuf1[UART1_TX_BUF_SIZE]; /* 发送缓冲区 */ static uint8_t g_RxBuf1[UART1_RX_BUF_SIZE]; /* 接收缓冲区 */ #endif 1. 2. 3. 4. 5. 6. 关于FIFO的机制,我们在按键FIFO驱动已经做过详细的介绍,这个地方就不赘述了。每个串口有两个FIFO缓冲区,每个FIFO对应一个写指针...
USART_TypeDef *uart;/*STM32内部串口设备指针*/ uint8_t *pTxBuf;/*发送缓冲区*/ uint8_t *pRxBuf;/*接收缓冲区*/ uint16_t usTxBufsize;/*发送缓冲区大小*/ uint16_t usRxBufsize;/*接收缓冲区大小*/ uint16_t usTxWrite;/*发送缓冲区写指针(FIFO机制)*/ ...
hdma_rx.Init.FIFOMode=DMA_FIFOMODE_DISABLE; hdma_rx.Init.FIFOThreshold=DMA_FIFO_THRESHOLD_FULL; hdma_rx.Init.MemBurst=DMA_MBURST_INC4; hdma_rx.Init.PeriphBurst=DMA_PBURST_INC4; HAL_DMA_Init(&hdma_rx);/*Associate the initialized DMA handle to the the UART handle*/__HAL_LINKDMA(...
WK2168是首款具备256级FIFO的低功耗并支持UART/SPITM/IIC/8位并行总线接口的4通道UART器件 2023-11-24 00:35:50 WK2204是首款具备256级FIFO的低功耗并支持UART/SPITM/IIC位并行总线接口的4通道UART器件 2023-11-24 00:31:31 STM32F429芯片带FIFO的DMA传输实现过程 ...
void HAL_UART_MspInit(UART_HandleTypeDef* huart) { GPIO_InitTypeDef GPIO_InitStruct = {0}; __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_USART2_CLK_ENABLE(); __HAL_RCC_DMA1_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_2; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; ...
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; // 单次传输模式,不循环 DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; // 优先级设置 DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;//DMA_FIFOMode_Disable DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull; ...
/* UART Rx RDR寄存器掩码 */ uint32_t FifoMode; /* 指定是否正在使用FIFO模式 */ uint16_t NbRxDataToProcess; /* RX ISR执行期间要处理的数据数 */ uint16_t NbTxDataToProcess; /* TX ISR执行期间要处理的数据数 */ /* Rx IRQ处理程序上的函数指针 */ void (*RxISR)(struct __UART_HandleTy...