= RESET) { /* 清除标志 */ DMA1->LISR = DMA_FLAG_DMEIF1_5; } } 注释的比较清楚。如果输出的PWM频率较高,建议将DMA的缓冲区设置的大些,防止DMA中断的执行频率较高。 由于使用了DMAMUX的请求发生器功能,函数HAL_DMAEx_MultiBufferStart_IT还会开启请求发生器溢出中断,对应的中断服务程序处理如下: /* ...
#define DMA_IT_DME ((uint32_t)0x00000002) #define DMA_IT_FE ((uint32_t)0x00000080) #define IS_DMA_CONFIG_IT(IT) (((IT) & 0xFFFFFF61) == 0x00) && ((IT) != 0x00)) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. DMA_interrupts_definitions /** @defgroup DMA_interrupts_definitio...
67. HAL_DMAEx_MultiBufferStart_IT(&DMA_Handle, (uint32_t)IO_Toggle, 68. (uint32_t)&GPIOB->BSRRL,(uint32_t)IO_Toggle1, 8); 69. 70. /* 用不到的中断可以直接关闭 */ 71. //DMA1_Stream1->CR &= ~DMA_IT_DME; 72. //DMA1_Stream1->CR &= ~DMA_IT_TE; 73. //DMAMUX1_...
regs->IFCR =0x3FU<<hdma_usart1_rx.StreamIndex;/*Enable Common interrupts*/hdma_usart1_rx.Instance->CR |= DMA_IT_TC |DMA_IT_DME; __HAL_DMA_ENABLE(&hdma_usart1_rx); READ_REG(huart1.Instance->SR); READ_REG(huart1.Instance->DR); READ_REG(huart1.Instance->CR1); READ_REG(...
-DMA_IT_DME:直接模式错误中断 返回值: -DISABLE:中断状态未设置 -ENABLE:中断状态已设置 DMA_GetITStatus函数通过读取DMA通道的中断标志位来检查中断状态。下面是该函数的源代码实现例子: ```c FunctionalState DMA_GetITStatus(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT) FunctionalState bitstatus...
Complete interrupt */ DMA_ITConfig(USARTx_RX_DMA_STREAM, DMA_IT_TE|DMA_IT_DME|DMA_IT_FE,...
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;NVIC_Init(&NVIC_InitStructure);/*EnableDMAStreamTransferCompleteinterrupt*/DMA_ITConfig(USARTx_RX_DMA_STREAM,DMA_IT_TE"DMA_IT_DME|DMA_IT_FE,ENABLE);/*EnabletheDMAStream*/DMA_Cmd(USARTx_RX_DMA_STREAM,ENABLE...
* @arg DMA_IT_TE: Transfer error interrupt mask. * @arg DMA_IT_FE: FIFO error interrupt mask. * @arg DMA_IT_DME: Direct mode error interrupt. * @retval None */ #define __HAL_DMA_DISABLE_IT(__HANDLE__, __INTERRUPT__) ((IS_D2_DMA_INSTANCE(__HANDLE__))?\ (__HAL_DMA_D2...
66. */67.HAL_DMAEx_MultiBufferStart_IT(&DMA_Handle,(uint32_t)IO_Toggle,68.(uint32_t)&GPIOB->BSRRL,(uint32_t)IO_Toggle1,8);69.70./* 用不到的中断可以直接关闭 */71.//DMA1_Stream1->CR &= ~DMA_IT_DME;72.//DMA1_Stream1->CR &= ~DMA_IT_TE;73.//DMAMUX1_RequestGenerator...
#define DMA_IT_DME ((uint32_t)0x00000002) #define DMA_IT_FE ((uint32_t)0x00000080) #define IS_DMA_CONFIG_IT(IT) (((IT) & 0xFFFFFF61) == 0x00) && ((IT) != 0x00)) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. DMA_interrupts_definitions /...