topic Re: IMX8M Mini M4 to A53 Fastest Data Transfer Method in i.MX Processors

IMX8M Mini M4 to A53 Fastest Data Transfer Method

Dhevan — Thu, 03 Mar 2022 19:18:33 GMT

Hi,

I want to transfer M4 to A53 linux user space. Per second we want to send 14000 data from m4 to A53.

I had already tried rpmsg_lite_str_echo_rtos this method but this very slow.

In this link Cortex M7 i had seen using message unit feature we can able to data between two different core.

But i dont know how to implement this feature please give me your suggestion to implement this concept.

Any other method is there for fastest data transmission between two cores ?

Thanks & Regards,

Vasu

Re: IMX8M Mini M4 to A53 Fastest Data Transfer Method

AldoG — Mon, 14 Mar 2022 23:59:39 GMT

Hello,

RPMSG is used for sending short messages with several bytes.

If you need to transfer some data, it is suggested to use shared memory and RPMSG only transmit the share memory address.

Since RPMSG is a mechanism to help user to use MU module. For example sharing data on DDR between cores.

You may refer to the sai_low_power_audio demo in the SDK package for an example of this implementation.

Best regards,
Aldo.