AM6422: IPC RPMSG Linux freertos

Wendy

Part Number: AM6422

Tool/software:

Hello，

We are developing based on SDK 8.6 using the AM6422. Currently, there are two usage scenarios: first, while using the Linux system, the real-time cores R5F0-0 and R5F1-0 run applications, with inter-core communication between the two real-time cores achieved through shared memory. At the same time, the two real-time cores can also communicate with the A53 Linux system via shared memory. Second, without using the Linux system, only the real-time cores R5F0-0 and R5F1-0 are used, with inter-core communication between them achieved through shared memory. Are both of these usage scenarios feasible? If so, are there relevant examples or documentation available?

7 months ago

0 Johnson John 7 months ago

TI__Intellectual 2760 points

Hi,

The expert is currently out of office until October 14th. Please expect some delay in the response. Feel free to ping this thread if you do not hear back by late next week.

Regards,
Johnson

0 Wendy 7 months ago in reply to Johnson John

Intellectual 820 points

Hello，

Is anything news？

0 Nick Saulnier 7 months ago

TI__Guru** 109630 points

Hello Wanglili,

Apologies for the delayed response, and thank you for pinging the thread.

Yes, you can have shared memory that is used between the R5F cores, and then a separate shared memory region that is used between Linux and the R5F cores.

Please keep in mind that SDK 8.6 is pretty old at this point, so we are limited in the support that we can offer for this software release.

For shared memory between Linux and R5F cores, you can refer to the zerocopy project. Please make sure you are looking at branch ti-linux-6.1, since the master branch of the zerocopy project is not backwards compatible with Linux kernel 5.10.

If needed, I can reassign your thread to another team member to discuss if we have any examples of shared memory between two MCU+ cores.

Regards,

Nick

0 Wendy 7 months ago in reply to Nick Saulnier

Intellectual 820 points

Hello，

I will try it and thank you for your reply.

0 Nick Saulnier 7 months ago in reply to Wendy

TI__Guru** 109630 points

Sounds good. Looks like I forgot to add the link, apologies for that. Future readers, the zerocopy project is here:

https://git.ti.com/cgit/rpmsg/rpmsg_char_zerocopy/

Regards,

Nick

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AM6422: IPC RPMSG Linux freertos