DMA_FIFOMode = DMA_FIFOMode_Disable; DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; /* 存储器单次传输*/ DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; /* 外设单次传输*/ DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; DMA_Init(DEBUG_USART_DMA_...
hdma_usart1_rx.Init.Priority = DMA_PRIORITY_MEDIUM; hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_usart1_rx.Init.FIFOThreshold=DMA_FIFO_THRESHOLD_FULL; hdma_usart1_rx.Init.MemBurst=DMA_MBURST_SINGLE; //??? hdma_usart1_rx.Init.PeriphBurst=DMA_PBURST_SINGLE; //???
DMA_FIFOThreshold = DMA_FIFOThreshold_Full;//设置FIFO范围,在此可以不设 DMA_InitStructure.DMA_Memory0BaseAddr = mar;//DMA 存储器0地址 DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; DMA_InitStructure.DMA_MemoryDataSize =DMA_MemoryDataSize_Byte;//存储器数据长度:8位 DMA_InitStructure....
DMA_Priority = DMA_Priority_Medium; //DMA优先级:中等优先级 DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; //FIFO模式 DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; //FIFO大小 DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; //存储器单次传输 DMA_InitStructure....
DMA_FIFOMode = DMA_FIFOMode_Disable;DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;...
UART1TxDMA_Handler.Init.FIFOThreshold=DMA_FIFO_THRESHOLD_FULL; UART1TxDMA_Handler.Init.MemBurst=DMA_MBURST_SINGLE; //存储器突发单次传输 UART1TxDMA_Handler.Init.PeriphBurst=DMA_PBURST_SINGLE; //外设突发单次传输 1. 2. 3. 4. 5.
DMA_FIFOMode = DMA_FIFOMode_Disable ; DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full ; DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single ; //存储器突发单次传输 DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_...
DMA_FIFOThreshold: FIFO 阈值选择,1/4、1/2、 3/4 和满,DMA_SxFCR :FTH[1:0]。 DMA_MemoryBurst:存储器突发模式选择,单次模式、 4 节拍、8 节拍、16 节拍,DMA_SxCR :MBURST[1:0]。 DMA_PeripheralBurst:外设突发模式选择,单次模式、 4 节拍、8 节拍、16 节拍,DMA_SxCR :PBURST[1:0] 。
这种模式,只要使能数据流(DMA_SxCR 寄存器中的位 EN 置 1),存储器数据就会传输到FIFO中,发生外设请求,FIFO数据会移出并存储到目标地址。当FIFO小于阈值,存储器的数据会重载FIFO。 直连模式 使能数据流时,DMA传输存储器的第一个数据到内部FIFO,发生外设请求时,DMA把预装在值发送的目标地址,然后进行下一个数据的传...
链接：https://pan.baidu.com/s/1SO34uS3flsdE8MdL4HHU0g?pwd=802v 提取码：802v Ymodem_STM32...