CAn frequency

[Rizwan Syed]

Posted on April 18, 2017 at 12:39

Hi , 

How to calculate the frequency for CAN interface in 

STM32F769i-Eval board?

In CAN Example prescaler value is 4 and it is for 1MHz.

What should be the prescaler value for 250kb/s in source code?

Thanks and Regards

Rizwan Syed

[Tesla DeLorean]

Posted on April 18, 2017 at 14:10

Just do the maths, the CAN clock starts with the APB divides that down with the prescaler, and then divides again by the sum of the bit quanta settings.