IMX8MPlus-RPMsg- Linux Code

ramesh91720721 — Tue, 09 Sep 2025 10:22:59 GMT

HI ,

I managed to run the sample code with the RPMsg Pingpong example.

I am trying to incorporate the Reading the data from my application .

Is there any sample to achieve it.

Thanks,

Ramesh.

Re: IMX8MPlus-RPMsg- Linux Code

danielchen — Wed, 17 Sep 2025 02:05:11 GMT

Hi @ramesh91720721

On the A-core (Linux) side. Once the RPMsg channel is establised between core A (Linux) and Cortex-M (RTOS), you can assess it via a character device. /dev/ttyPRMSG0

You can use the standard Linux file (open, read, write)

For example,

#include <stdio.h>

#include <fcntl.h>

#include <unistd.h>

int main() {

int fd = open("/dev/ttyRPMSG0", O_RDONLY);

if (fd < 0) {

perror("Failed to open RPMsg device");

return -1;

}

char buffer[128];

while (1) {

int len = read(fd, buffer, sizeof(buffer) - 1);

if (len > 0) {

buffer[len] = '\0';

printf("Received: %s\n", buffer);

}

close(fd);

return 0;

}

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Regards

Daniel

Re: IMX8MPlus-RPMsg- Linux Code

ramesh_rajagopal — Tue, 23 Sep 2025 02:54:16 GMT

Daniel,

Thanks, It worked. Solved the problem.

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