Usart1 BRR register seems strange when using STM32H743 with stm32cubeh7 1.12.1

[zsk]

Dear all,

    I have encountered an strange issue. I set Usart1 Baud Rate to 115200, however, Usart1 BRR[15:4]==0x0082, which corresponds to 57600.(57600 == 120Mhz/(16*0x82)). 

  I also noticed that HAL_RCC_GetPCLK2Freq() returns a wrong pclk value 0x0E4E1C00(240M), but it should be 120M.

 

The Usart1 Config and Rcc config are as follows :

 

 

 

[TDK]

This has been an issue in the past. Is your STM32H7 package fully updated? If so, can you include your IOC file here?

 

The relevant fix was made 4 months ago. (Might not be this exact change.)

 

[Pavel A.]

> The relevant fix was made 4 months ago

This line with D1CorePrescalerTable array has not been changed recently. 

[Pavel A.]

Can you compare the generated code, especially for SystemClock_Config?