TMS320F280039C: F280039C CAN Transmit — Only 5 Messages Observed on Bus via CANoe

Hello,

I’m working with the TI F280039C MCU and using MATLAB R2023b with the Embedded Coder support package for C2000. In my Simulink model, I have configured 10 separate CAN Transmit blocks, each assigned with a unique Message ID and a distinct Mailbox Index.

However, when I monitor the CAN bus using Vector CANoe, I consistently only observe 5 CAN messages being transmitted. These 5 messages appear to correspond to the first 5 mailboxes with the highest priority, and the other messages are not visible on the bus at all.

[Meet]

To help understand the issue more accurately, it would be useful to have more information about your Simulink model configuration. Specifically:

• How are the CAN Transmit blocks configured?
• What mode are you using for deployment?
• Are there any error messages or diagnostics from the hardware or CANoe?

There is no strict limit to the number of CAN Transmit blocks or CAN messages that can be handled, but correct configuration of mailboxes and message filters is critical. It is possible that the unused messages are not being transmitted due to priority conflicts or mailbox setup.

You might also consider checking the Vector CANoe documentation for tips on debugging missing CAN messages.

[Chenyang]

Hi Meet,

Thanks for your comments.

This problem was solved by turn on the "Enable blocking mode" of the configuration in eCAN transmit.