PROCESSOR-SDK-AM64X: AM64x Inter Process Communication

Zaki Ryne

Hello,

To boot up multi core (only the R cores for now) and do inter communication, do we need to configure the 'linker' file as well? If yes, how?

over 2 years ago

0 Nick Saulnier over 2 years ago

TI__Guru** 108960 points

Hello Zaki,

I see that your thread is ONLY asking about IPC between R5F cores, so I am going to reassign your thread to another team member to comment.

Please note that this discussion is DIFFERENT for AM64x MCU+ SDK 9.0 and earlier than it is for AM64x MCU+ SDK 9.1 and later (we changed some stuff about how system projects and shared memory regions work, some of which is documented here:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1323865/sk-am64b-syscfg-ti_drivers_config-o-build-errors-while-trying-to-build-led-blink-example-with-ipc/5036614#5036614)

Regards,

Nick

0 Zaki Ryne over 2 years ago in reply to Nick Saulnier

Prodigy 145 points

Hi, I am using SDK 8.5.0

0 Swargam Anil over 2 years ago in reply to Zaki Ryne

TI__Guru 52598 points

Hello Zaki,

The FAQ below is helpful to create an IPC for custom cores.

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1220573/faq-am6442-faq-am64x-generating-an-ipc-multicore-app-image-for-a-custom-selection-of-cores

My suggestion is that you take existing ipc examples and modify them accordingly for your application.

Actually, in the linker command file there is IPC shared memory which is used by all cores to transfer data in between cores.

And, the IPC shared memory should not be catchable. So, these setting will be added in the MPU region.

So, instead of adding all the setups in your application, take an existing IPC example and modify it according to your application,

Regards,

S.Anil.

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PROCESSOR-SDK-AM64X: AM64x Inter Process Communication