Is there a way to know if there is a message in /dev/ttyRPMSG0? I’ve tried using ftell, but it fails to get the file size and just using “fread” will put one application on Busy Waiting.
Greetings @Ilan_Figueiredo!
I think this depends on how you’re opening the TTY for reading.
Something like
fd = open("/dev/ttyRPMSG0", O_RDWR | O_NOCTTY | O_NONBLOCK);
should not block your code when using read(). Can you share your TTY configuration and code?
I would rather not use the since it is POSIX bound, but since I’m already mocking the filepath to simulate in Windows machines this solution is fair enough.
@Ilan_Figueiredo,
Nice! Glad that this will work for you.