POSIX like

[EduardShaid]

it would be good to do on top of your RTOS shell POSIX

for example, to make pthread_mutex_lock () as the:
pthread_create (...) {
...
nOS_ThreadCreate(...);
...
};

pthread_mutex_lock (...) {
...
nOS_MutexLock(...);
...
};

[jimtremblay]

Yeah, a compatible layer can be done on top of nOS to have the possibility to compile your app for a microcontroller or a stronger Linux capable microprocessor.

Maybe you can help if you want.