Sylvain Rochet wrote: >> Is there actually a good reason to do so? What's the difference >> between "tryPost" from ISR vs. from task? > > The main difference is that sending a message to a message box triggers > an immediate context switch [..] if the receiving task have a > higher priority than the sender task.
I know what's behind technically, with that question I'd rather meant what's the big deal for an OS to make this difference? It knows about which task is currently running and which got runnable, so it's not a big deal to know it's in interrupt context. From all the embedded OSes I've used so far, FreeRTOS is the only one to make this difference. And in my view, passing the "fromISR" around up to portions of the code that should be independent of whether run from task or from ISR sometimes makes the code design worse. Simon _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
