CAN-FD with 64-byte payload, does it work?

[BStei.2]

I am using a STM32H753 I send a 64-byte frame from a PEAK USB CAN FD device to the STM32:

Timestamp:    0.000000  ID: 00000582  X        DLC: 64  0a 06 0d 00 00 04 28 7b 22 62 75 69 6c 64 5f 63 66 67 22 3a 7b 22 74 6f 6f 6c 5f 73 69 7a 65 22 3a 31 32 2c 22 74 6f 6f 6c 5f 62 6f 64 69 65 73 22 3a 5b 7b 22 62 6f 64 79 5f 74 79 70 65 22 3a

And I get this in the FIFO1 RX memory of the STM32:

82 05 00 40 00 00 0f 01 0a 06 0d 00 00 04 28 7b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

If I limit the frames to 8 byte payload everything works but it seems with 64-byte it only gets the first 8 bytes of payload.

I have the BitRateShifting enabled running at the Data Rate of 2Mbit/s

80MHz FDCAN clock

Prescaler 8

SJW 1

tseg1 5

tseg2 4

Data Prescalar 4

SJW 1

tseg1 5

tseg2 5

[BStei.2]

This turned out to be a python script problem for sending frames from the PEAK USB CAN FD device. I needed to explicitly set is_fd=True even if I set other parameters that are only supported by FD such as bitrate_switch otherwise I only got 8-bytes of payload received.

      msg_tx = can.Message(arbitration_id=ARB_ID | SERVICE_REQ,

             data=data_in,

             extended_id=True, bitrate_switch=True, is_fd=True)