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Hello experts,
For my own application, I am using the RPMessage_send function with timeout set to 0.
Function works as expected until Sdk 9.1.
In this version RPMessage_send function returns -2 but data successfully received in other core.
Setting the timeout 1 is fixing the problem but in case of real error happening this will cause 1 ms waiting to send data. This time is too long for my application.
I am waiting for your helps.
Regards
Hello Berlam,
I have looked at the RPMessage_send API which calls the API below.
Here, you can see that if you send the time-out value is zero, then every time you get the return status as SystemP_TIMEOUT, because the current core will take some time to notify the remote core mailbox and this time would be some X time. So, after sending this message, the eplapsed time always greater than timeout value, so you will get the -2. In this case, it might be the current core will send the data or not, and we don't have any idea whether the core will send the data to remote cores. To avoid these issues, you need to use the system timeout value -1, otherwise this functionality will not work.
Regards,
S.Anil.
