CAN FD communication

[Devendiran]

i am using Riverdi RVT50HQSNWC01-B - STM32 EMBEDDED 5.0" DISPLAY in the display have inbuild Micro Controller Unit STM32U5G9NJH6Q.I tested the internal loopback and external loopback in this and it works fine but the normal mode is not working.Can you tell me what I need to do to make CAN FD normal mode work?

and i have RVT121HVSNWC00-B - STM32 EMBEDDED 12.1" DISPLAY in the display have inbuild Micro Controller Unit STM32H757XIH6. so i need to CAN FD communicate STM32H757XIH6 to STM32U5G9NJH6Q controller.

and we have two Riverdi RVT50HQSNWC01-B - STM32 EMBEDDED 5.0" DISPLAY in the display have inbuild Micro Controller Unit STM32U5G9NJH6Q. so first i try this two. that project file i attached so please the how to fix it.

[Mike_ST]

Hello,

Not sure this is your problem,

but between two boards/MCUs you need at least a termination resistor like R29 (JP9 has to be fitted) in the following example:

[Devendiran]

in this case i am using Riverdi RVT50HQSNWC01-B - STM32 EMBEDDED 5.0" DISPLAY in the display have inbuild Micro Controller Unit STM32U5G9NJH6Q.I think it's already been added to this.

[Mike_ST]

"I think it's already been added to this."

At least check S3 switches.

[Devendiran]

yes, I already turned on the s3 switch. but in the interrupt does not occur.