I am looking at the Rowley port of lwIP stack for SAM7 under:
In the file ethernetif.c - under routine static struct pbuf *low_level_input(…), it creates and uses xRxSemaphore.
It is not clear as to how this is being used? I am not able to see where any other task is trying to acquire this sema?
Am I missing something on the use of sema’s?