英文:
Receiving data over STM32F407 or STM32L476's USB OTG using DMA?
问题
我正在进行一个项目，需要使用DMA通过USB OTG接收数据，但我找不到任何与之相关的通道链接。我已经配置了DMA，但我不知道要将哪个通道与之链接（__HAL_LINKDMA(HANDLE, PPP_DMA_FIELD, DMA_HANDLE)），请有人帮助我....
问候，
Waqas A
英文:
I am working on a project and I need to receive data over USB OTG using DMA, but I could not find any channel link to it. I have configured DMA but I don't know which channel to link with it ( __HAL_LINKDMA(HANDLE, PPP_DMA_FIELD, DMA_HANDLE), somebody help me please....
Regards,
Waqas A
答案1
得分: 1
USB HS 外设已经是总线主控。实际上，它内置了 DMA，因此不需要使用通用 DMA。
在各自的 Cube 包中有示例。例如：对于 STM32F4xx，请参见 STM32CubeF4。
英文:
The USB HS peripheral is already a bus master. Effectively it has the DMA built in so it doesn't need to use the general purpose DMA.
There are examples in the respective Cube package. Eg: for STM32F4xx, see STM32CubeF4.
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