TMS320F28386D: Switch CAN peripheral from CPU1 to CPU2

Clément Letonnelier

Part Number: TMS320F28386D
Other Parts Discussed in Thread: C2000WARE

Hello,

We are using the CAN bus to dataload software with a custom protocol of ours.

In our new project, we are using the two cores of the CPU.

Our idea was to first dataload the CPU1 and from a specific command sent on the CAN bus switch the CAN peripheral assignment from CPU1 to CPU2.

What I understood is we basically just need to change the CPUSEL configuration.

However, is there any risk of doing that ? In particular, I read it wasn't glitch free so it's maybe not safe to do so ?

Would we need to perform the initialization of the peripheral again ?

Best regards,

Clément

over 4 years ago

+1 Manoj Santha Mohan over 4 years ago

TI__Guru 55700 points

Clement,

I hope you are planning to switch CAN to CPU2 by running code from CPU1. You need to assign CAN pins, CAN module and associated memory to CPU2 and have CPU2 configure CAN module.

We don't have a specific C2000Ware for CAN. But, we can one for FSI. You can use that as reference for CAN.

<C2000Ware>\driverlib\f2838x\examples\c28x_dual\fsi

Regards,

Manoj

+1 Vivek Singh over 4 years ago in reply to Manoj Santha Mohan

TI__Guru** 113755 points

Clement,

On this specific query,

Clément Letonnelier said:
Would we need to perform the initialization of the peripheral again ?

Yes, your recommendation is to re-initialize the peripheral again after changing the CPUSEL.

Regards,

Vivek Singh

0 Clément Letonnelier over 4 years ago in reply to Manoj Santha Mohan

Expert 2686 points

Yes this is my intent, thanks.

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TMS320F28386D: Switch CAN peripheral from CPU1 to CPU2