STM32MP135 - BAREMETAL - UART - DMA

[jschneider]

Hello,

 

I am currently using bare-metal MP13 solution in CubeIDE. I want to integrate uart with DMA. After configuring DMA settings for uart4, a following fragment of DMA init code has been generated:

NVIC is not available for Cortex-A, but still its functions are being generated. 

My question is, how can I properly adjust MX_DMA_Init for uart interrupts without NVIC and code generation?

Do you have any ideas?

 

Thank you,

Jacek S.

 

[jschneider]

For anyone encountering the same problem here is the solution:

 

Enable ETZPC and add init function to the main (It won't be generated)

Make sure DMA Init runs before UART Init.

If your compiler doesn't see an assert in a scope, comment it out

Adjust MX_ETZPC_Init:

In the end, correct generated MX_DMA_Init accordingly to your own settings.

 

Best,

 

[Erwan SZYMANSKI]

Hello @jschneider ,
First, thank you for having shared your solution on the forum, it can help a lot other users.

Can you share us your IOC file in order to replicate on our side, and correct possible issues ? 

Kind regards,
Erwan.

[jschneider]

Hi @Erwan SZYMANSKI 

Code genereted from IOC will be definitely incorrect, so I wouldn't trust it.

I'm attaching my main.c with most of the necessary changes to make dma-uart work.