#define UART1_DMA_TX_IRQHandler DMA2_Stream7_IRQHandler #define UART1_TX_DMA_RCC RCC_AHB1ENR_DMA2EN #define UART1_TX_DMA_INSTANCE DMA2_Stream7 #define UART1_TX_DMA_CHANNEL DMA_CHANNEL_4 #define UART1_TX_DMA_IRQ DMA2_Stream7_IRQn 之后在 stm32_control 中会调用 stm32_dma_config()...
printf("DMA1_Stream0 %u rn", (DMA1_Stream0->CR & 0x1));} 中断例程：void TIM2_IRQHandler...
c:void DMA2_Stream0_IRQHandler(void){ if(DMA_GetITStatus(DMA2_Stream0, DMA_IT_TCIF0))...
DMA1_Stream4->CR&=~(1<<4); //关闭传输完成中断(这里不用中断送数据)I2S2ext_RX_DMA_Init...
void DMA2_Stream5_IRQHandler(void) { /* USER CODE BEGIN DMA2_Stream5_IRQn 0 */ /* USER CODE END DMA2_Stream5_IRQn 0 */ HAL_DMA_IRQHandler(&hdma_usart3_rx); /* USER CODE BEGIN DMA2_Stream5_IRQn 1 */ /* USER CODE END DMA2_Stream5_IRQn 1 */ ...
SET_BIT(((DMA_Stream_TypeDef *)huart->hdmarx->Instance)->CR, DMA_SxCR_DBM); __HAL_DMA_ENABLE(huart->hdmarx); } 5.1.2函数名称和传参类型 static void USART_DMAEx_MultiBuffer_Init(UART_HandleTypeDef *huart, uint32_t *DstAddress, uint32_t *SecondMemAddress, uint32_t DataLength) ...
(USART2_TX_DMA_STREAM,DMA_FLAG_TCIF6); /* Clear USART Transfer Complete Flags */ USART_ClearFlag(USART2,USART_FLAG_TC); DMA_SetCurrDataCounter(USART2_TX_DMA_STREAM,lengh); DMA_Cmd(USART2_TX_DMA_STREAM,ENABLE); } void USART2_IRQHandler(void) { uint16_t lengh=0; if(USART_GetIT...
3.3. Stream-to-Memory DMA BBB Memory Map The S2M DMA BBB memory map provides the address offsets of all the locations within the BBB. The following streaming DMA AFU registers reside at offset 0x200 in the MMIO address space. Table 6. Stream-to-Memory DMA BBB Memory Map Byte Address...
1. About this Document 2. Streaming DMA AFU Description 3. Memory Map and Address Spaces 3.1. Streaming DMA AFU Memory Map 3.2. Memory-to-Stream DMA BBB Memory Map 3.3. Stream-to-Memory DMA BBB Memory Map 4. Software Programming Model ...
图21.1. 1数据传输方式 DMA就是为了解决大量数据转移而过多消耗CPU资源而产生的，DMA的作用就是实现...