TMS320F28379D: How to Transmit or receive multiple CAN message using single CAN Mailbox using Simulink

Marmelade4000

Part Number: TMS320F28379D

Hi,

i have the same issue as:

TMS320F28069M: How to Transmit or receive multiple CAN message using single CAN Mailbox using Simulink - C2000™ microcontrollers forum - C2000™ microcontrollers - TI E2E support forums

My problem is, that i don't have the example file. Mathworks support couldn't help me. Has anyone this file?

Regards

Bernd

over 5 years ago

0 MatthewPate over 5 years ago

TI__Guru* 81440 points

Bernd,

I don't have the example file per se, but from your linked post there is description of the approach used via a bit mask. I'm going to reach out to the poster Kash Olia to see if he is able to attach or give some guidance on his solution.

Best,

Matthew

0 Brian McKay over 5 years ago in reply to MatthewPate

Mastermind 9005 points

Bernd,

I have a VERY old model for this, looks like R2014b - I have no idea if it still works, but maybe you can study it and implement with your project.

Cheers,

-Brian

/cfs-file/__key/communityserver-discussions-components-files/171/6840.CAN_5F00_Tx_5F00_multi_5F00_ID_5F00_r2014b.zip

0 Kash Olia over 5 years ago in reply to MatthewPate

Genius 3215 points

Bernd,

That's the limitation of the Simulink CAN block but there is a way to send multiple messages with one mailbox. what you need to do is to use a Switch Block to pass through different messages to one mailbox, then come up with a logic to control the switch. I do not have my old software to share but the model Brian McKay provided below describes it clearly. Here is the screenshot of the model if you are not able to open it up:

As you can see there are two CAN messages with different data bytes are being passed to eCAN XMT block through a Switch block.

0 Marmelade4000 over 5 years ago

Prodigy 90 points

Hi,

thanks for your answers. The problem for transmitting multiple Can Messages with one mailbox number is solved. Do you have a second model where you can receive multiple Can Messages with one mailbox number? Brian McKay wrote in his post in 2017, that you need to configure the mask in the "system initalize block".

Regards

Bernd

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: How to Transmit or receive multiple CAN message using single CAN Mailbox using Simulink