PROCESSOR-SDK-AM64X: Configuration of RP messages bigger than 512 bytes

Dekel Guterman

Part Number: PROCESSOR-SDK-AM64X

Hi,

I'm using RP messages for the communication of R5_0_0 and A53.

It's clear how to configure the packet size on R5.

I would like to know how to configure the A53 to support RP messages of 550 bytes.

Please explain how to change it.

Thanks,

Dekel

0 Nick Saulnier 11 months ago

Hello Dekel,

As described here, the Linux RPMsg driver ONLY allows for RPMsg messages that are 512 bytes total (with 496 bytes of information): https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/08_05_00_24/exports/docs/api_guide_am64x/IPC_GUIDE.html#autotoc_md359

We do provide a shared memory example that demonstrates how to use a shared memory region to pass large amounts of data if that is needed:
https://git.ti.com/cgit/rpmsg/rpmsg_char_zerocopy

Regards,

Nick

0 Dekel Guterman 11 months ago in reply to Nick Saulnier

Thanks Nick for the quick response.

I'll learn your example.

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