FD CAN doesn't work properly

[MKami.0]

What is the best way to set up FD CAN in classic mode on stm32 nucleo h743zi board?

Currently, I'm using FDCAN with 16 Mhz frequency on the bus and I want to get 500kbit/s.

My settings are:

hfdcan1.Init.NominalPrescaler=2;

hfdcan1.Init.NominalSyncJumpWidth=1;

hfdcan1.Init.NominalTimeSeg1=13;

hfdcan1.Init.NominalTimeSeg2=2;

hfdcan1.Init.DataPrescaler=1

hfdcan1.Init.DataSyncJumpWidth=2;

hfdcan1.Init.DataTimeSeg1=13;

hfdcan1.Init.DataTimeSeg2=2;

Using osciloscope I see that one bit is sending in 13 ms time, when it should be in 2 us.

How to set things up properly?

[Imen.D]

Hello,

I recommend you to follow the FDCAN example within STM32CubeH7, shows how to configure the FDCAN peripheral to send and receive

Classic CAN frames in normal mode:

STM32Cube_FW_H7_V1.3.2\Projects\STM32H743I_EVAL\Examples\FDCAN\FDCAN_Classic_Frame_Networking

Regards,

Imen