Skip to main content
Visitor II
February 25, 2024
Solved

How do I enable ltdc_aclk? STM32H745XIH6

I'm configuring the LTDC and I'm not sure where/how I enable the ltdc_aclk. I've enabled ltdc_plck in RCC->APB3ENR and I've configured PLL3R for the kernel/pixel clock but I cannot for the life of me find any info on how/where to enable ltdc_aclk so I'm unable to modify any of the registers in this clock domain.

 

I'm using the STM32H745i-DISCO dev board.

clocks.png

clocks2.png

This topic has been closed for replies.
Imen.DBest answer
ST Technical Moderator
February 28, 2024

Hello @aj992,

The LTDC AXI clock is set by default, as it is the clock of matrix bus.
For LTDC, there is the LTDCEN bit to set.

ImenD_0-1709148335532.png

 

In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks

1 reply

Imen.DBest answer
ST Technical Moderator
February 28, 2024

Hello @aj992,

The LTDC AXI clock is set by default, as it is the clock of matrix bus.
For LTDC, there is the LTDCEN bit to set.

ImenD_0-1709148335532.png

 

In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question. Thanks