Can protocol baud rate configuration issue

[yuhui]

Hi all

  i use the stm32H735IGKx demo board，and would like to configure the can speed 500k. Below is my configuration:

but i can't get the can data from the third party software at 500Kbps

and when i use the oscilloscope, i have to configure 800Kbps that i can get the right information:

 

 

and when i configured like below, i can get the right can data

 

 

 

 

 

 

 

is there something wrong?

looking for experts' reply, many thanks.

[yuhui]

It seems the clock configuration problem

before， I used PLL2Q.  no matter how I changed the PLL2Q, it seems the clock is around 20MHz

after, I changed clock to PLL1Q, the problem solved and FDCAN module worked very well.

the reason I don't have time to find, maybe later.