SimulIDE FAQ

Yeah, this is a common gotcha with OSEK—priority inversion can sneak in if the resource priorities aren't dialed in right. OSEK uses the priority ceiling protocol to dodge this, so bump the ceiling priority of your shared resource to match or exceed the highest-priority task that touches it (in this case, at least as high as A's). Double-check your declarations in the OIL file or config, and ensure every critical section is wrapped tightly with GetResource() before and ReleaseResource() after—no leaks there. Also, verify task activations and scheduling; if C's holding the resource too long due to that delay loop, it might invite preemption if ceilings aren't enforced. Test with shorter delays or real interrupts in SimulIDE to isolate. Once ceilings are set, A should inherit the priority while waiting, keeping things inversion-free. Good luck!