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GWang.5 · 2022-11-16

I am using the UART of STM32H747,with DMA transfering data. There is a Note in the reference manual about DMA_SxCR register:And in the Errata sheet of STM32H743, it says:What does a concurrent transfer mean? Will the DMA channel transfering UART data...

GWang.5 · 2022-12-05

Hello RomainThank you for your answer, but I still have some questions.Q1: According to RM0399: 16.3.4, the action of request and ack can be divided into 4 steps. In which step does "DMA acknowledge take longer time than expected to clear ADC reques...

GWang.5 · 2022-12-02

Hello RomainThank you for your answer, but I still have some questions. For clarity, I quote your answer in "bold italic" style.Q1: Does "The peripheral request is cleared when dma acknowledge is asserted." mean "The peripheral request is cleared wh...

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When using DMA to tranfer data of UART, what will happen if Bit20 TRBUFF of DMA_SxCR is not set?

Re: When using DMA to tranfer data of UART, what will happen if Bit20 TRBUFF of DMA_SxCR is not set?

Re: When using DMA to tranfer data of UART, what will happen if Bit20 TRBUFF of DMA_SxCR is not set?