Does STM32F746ZG, supports low level drivers for UART???

[kjais]

If I am making UART6, as HAL layer, it's working fine but if it configure it as LL api, it's giving garbage values.

[After Forever]

Yes STM32CubeF7 does include LL drivers, and UART/USART is supported.

You must be doing something wrong. Show your code.

[Tesla DeLorean]

Review the peripheral register settings in the working and non-working cases, compare and contrast.

[kjais]

thanks for your reply.

Kindly let me know, how can I check the peripheral register settings?

[kjais]

I am sharing my code in the Attachment.

please check and let me know, what I am doing wrong.

Basically I am configuring 2 UART

UART2 and UART6

UART6 on HAL layer

UART2 on LL

it giving me a garbage value on UART6

but if I make both on HAL layer, it's giving me correct value on the comport

[kjais]

Hi

I uploaded my example code.

Can you suggest me how to proceed further?

[waclawek.jan]

Read out the registers' content and compare.

Also make sure the related APB clocks are set as you expect them to be.

JW

[Tesla DeLorean]

Use the debugger? Open a "Peripheral View" or equivalent option, dump the memory region?

[Tesla DeLorean]

Make it simpler, not familiar with the board being used here, or what the "garbage" looks like compared to what it should look like.

Validate the USART2 and USART6 with a clean demo before integrating back into the code base you are using once you understand the issues.

Incorrect baud rates can cause issues, check HSE_VALUE compared to the board design. Check the USARTx->BRR values in working / non-working.

Don't enable USART2 RXNE interrupts, you don't service them.

Have a Hard Fault Handler that does something to report if it ends up there.