能否支援UART DMA 傳送 & 接收 (Can support UART DMA transmit & receive)

[CYE-GitENG]

Related area

支援UART DMA 發送與接收
Support UART DMA transmit and receive

Hardware specification

ESP32-S3

Is your feature request related to a problem?

是 非常相關
It is very relevant

Describe the solution you'd like

架構:
ESP32-S3 透過 UART 傳遞 資料給STM32FXX
Architecture:
ESP32-S3 transmits data to STM32FXX via UART

使用STM32FXX UART(Rx Tx) + DMA ，資料收發完只產生一次中斷
那如果ESP32-S3 可以也像STM32一樣那就很完美了。
Using STM32FXX UART(Rx Tx) + DMA, only one interrupt is generated after data transmission and reception
It would be perfect if ESP32-S3 could be like STM32.

Describe alternatives you've considered

有考慮 SPI +DMA方案 但是網路提供的lib編譯根本不會過....
這真的有驗證過麼....還是ESP32-S3 還沒支援..
I have considered the SPI +DMA solution, but the lib compilation provided by the network will not pass at all....
Is this really verified....or is ESP32-S3 not yet supported..

Additional context

No response

I have checked existing list of Feature requests and the Contribution Guide

• I confirm I have checked existing list of Feature requests and Contribution Guide.

[SuGlider]

@CYE-GitENG -
This issue doesn't look to be related to Arduino API.
Arduino HardwareSerial is implemented in the top of IDF UART driver.

Looking quickly at UART IDF Code, it can see that it is Interrupt driven, but does not use DMA/GDMA.

You may want to ask about it in the IDF github or in the ESP Forum.

Based on the ESP32-S3 TRM, chapter 26.4.10, UART can use GDMA, but as said, we won't add it as feature because we rely on the IDF UART Driver.

[CYE-GitENG]

@SuGlider
Sure,I got it.
Thank you~