DMAEnable(DMAy_Streamx, USARTx, USART_DMAReq_Tx, (uint16_t)length);程序如下 /* ***...
DmaDataPendingApiConfiguration 是否启用数据挂起api,默认禁用; DmaBufferSwitchApiConfiguration 是否启用数据buffer切换api,默认禁用; DmaVersionInfoApi 是否启用版本信息api,默认禁用; DmaMaxTransactionSetPerChannel 用于指定每个通道最大的传输集个数,默认为1; DmaInitApiMode 用于指定初始化api的运行等级为SUPERVISORMOD...
我们的H7板子配套了SPI + DMA方式控制DAC856X，而F4系列不方便实现，确切的说是可以用DMA方式，但是不...
buffer, len, DMA_FROM_DEVICE); if (dma_mapping_error(cp->dev, mapping)) { /* * reduce current DMA mapping usage, * delay and try again later or * reset driver. */ goto map_error_handling; } cp->rx_buf = buffer; cp
计数= [(Producer_Buffer_size(bytes))/2] - 1 ==> 请告诉我们每次切换时丢失的数据量。 您可以向 GPIF 发送递增数据来测试这一点。 谢谢&问候, Teja Like 回复 三月 28, 2024 169 次查看 0 1 条回复 Translation_Bot Community Manager 回复Translation_Bot 查看原创内容:...
核心思想就是，初始化sg_maps，通过bar空间告知FPGA通道号、长度、大小等信息、使用通用buffer发送数据、...
Before committing that buffer in DMA callback, copy that buffer to another local buffer. After exiting the dma callback, print the buffer contents on an UART terminal in your app thread. In this way you can see what data is received from the GPIF side. Regards, Hemanth Like 2,157 0...
uint8_t g_spiTxBuf[SPI_BUFFER_SIZE]; uint8_t g_spiRxBuf[SPI_BUFFER_SIZE]; /* DMA模式使用的SRAM4 */ #elif defined (USE_SPI_DMA) #if defined ( __CC_ARM ) /* IAR ***/ __attribute__((section (".RAM_D3"))) uint8_t g_spiTxBuf[SPI_BUFFER_SIZE]; __attribute...
__HAL_FLASH_PREFETCH_BUFFER_ENABLE();#endif /* PREFETCH_ENABLE */ /* Set Interrupt Group ...
When using scan mode, DMA bit must be set and the direct memory access controller is used to transfer the converted data of regular group channels to SRAM after each update of the ADC_DR register. The injected channel converted data is always stored in the ADC_JDRx registers.⾮连续模式 T...