Hello Community,
I have been working on CAN for two days, and I haven't been able to figure out the baud rate issue I'm facing. I'm using the HSE as the clock source with a value of 25MHz, as mentioned in the UM2248 document (I'm using the STM32L4R9I-EVAL evaluation board). I've configured the baud rate to 500kbps, but it doesn't work. I suspect the microcontroller switches to the HSI clock at 16MHz. When I reconfigure the baud rate to 500kbps with a 16MHz clock, it works fine.
However, when I check the schematics of the board, I see that the X2 crystal is at 16MHz. This creates confusion between the clock value defined in the UM2248 document and the board schematics. Could you please explain why there is a difference between the X2 value in the UM2248 document and the schematics of the evaluation board?
Additionally, could you share the schematics for the STM32L4R9I-EVAL MB1313-B-03 board? I couldn't find this exact version online.
Thank you very much for your help.
Schamtic link : https://www.st.com/resource/en/schematic_pack/mb1313-l4r9i-b02_schematic.pdf
User manual of the STM32L4R9AI (Please se section Clock references ) : https://www.st.com/resource/en/user_manual/um2248-evaluation-board-with-stm32l4r9ai-mcu-stmicroelectronics.pdf
