Hercules Launchpad-> Can't transmit CAN Messages with CAN 2

And i forgot to write that receiving also doesn't work.

Drave,

There isn't a CAN transceiver on the launchpad for starters.

Which launchpad are you using? (there are 6 of them for Hercules..)

Have you tried the canned CAN interrupt example that is included with HalCoGen?

Yes, you are right there are no transceivers on Hercules LAUNCHXL-TMS57004 but i made a transceiver board myself and put it on the pins.

So i assumed my CAN2 tranceiver doesn't work, but then i measured the voltage on the CAN2TX PIN directly on the Hercules Board, there was no data trasmitted.

I connected the transceivers directly with my VECTOR CANalyzer.

I can receive everything from CAN1 but CAN2 doesn't do antything.

What does this mean:

/** - Check for pending message:
* - pending message, return 0
* - no pending message, start new transmission
*/
if ((node->TXRQx[regIndex] & bitIndex) != 0U)
{
success = 0U;
}

Pending message? How can this happen?

I think it means it's not busy.

Interesting are you working w. John W?

Almost uploaded exactly the same code to him a minute ago on this post:

e2e.ti.com/.../1891355

Except you alternated between CAN1 and 2 a bit more elegantly perhaps.
And it looks like you are not using interrupts.

In any case maybe give the code from that post a look. It's for the 3137 but you should be able
to move it to the ls04 easily just:
- create a new LS04 ccs project
- create a halcogen LS04 project
- copy the same settings for CAN1 and CAN2, and VIM [there are 4 interrupts to enable...]
- generate code
- import the same 'sys_main.c' from the project I uploaded on that post

And then connect the transceivers from CAN1 and CAN2 and monitor on your vector box. Should work...

Best Regards,
-Anthony

No, i don't know John W. :)
Still doesn't work. Just don't get CAN2 interrupts.
Used the same settings like in your project.