您好,我将工作代码从 STM32F4 移植到了 STM32H7 (STM32H7A3NI)。到目前为止,大多数都按预期工作,但是在用作 I2S 的 SPI2 上,循环 RX DMA1 Stream3 没有启动。NTD 保持 ...
DMA CONTROLLER PROVIDED WITH MECHANISM FOR DESIGNATING SUBSTITUTE DEVICE STREAM AND MEMORY SPACE DURING DMA TRANSFERRING PERIOD 来自 百度文库 喜欢 0 阅读量: 16 申请(专利)号: JP特願平7-298679 申请日期: 19951116 公开/公告号: JP特開平8-235102A 公开/公告日期: 19960913 申请(专利权)人: ...
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 3.4. Device Feature Header Linked-list ...
I do some more tests. Stream mode, Vivado 2018.3.1, Ubuntu 18.04.1(Kernel 4.15.0-91) , use dma_from_device cmd. 1MB one count: ./dma_from_device -d /dev/xdma0_c2h_0 -s 0x100000 -c 1 4KB 4096 count: ./dma_from_device -d /dev/xdma0_c2h_0 -s 0x1000 -c 4096 dmesg log...
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...