Hi,
I'm using Atmel (AVR32) suggestion on how to configure the lwip stack. Here
is a code sample:
[thread]
...
sys_sem_t sem;
sem = sys_sem_new(0);
// Initialize the lwIP stack.
tcpip_init(TcpIpInitDone, &sem);
// Block until the lwIP stack is initialized.
sys_sem_wait(sem);
...
// Callback executed when the TCP/IP init is done.
static void TcpIpInitDone(void *arg)
{
sys_sem_t *sem;
sem = (sys_sem_t *)arg;
// Signal the waiting thread that the TCP/IP init is done.
sys_sem_signal(*sem);
}
This is to be sure that the initialization is done when the function
returns, because it's a multithread project using RTOS. So, when my network
cable is connected, everything is fine. When it is not connected. I never
unblock from the semaphore until I connect one. This is a little problematic
for me since at that moment, my watchdog is active (and must be), so I get
constant resets.
I know I can probably change my code to make this work, but I was curious to
know if there was a way to start the stack without a cable, successfully
and be in a state like if I had a cable and I disconnected it after startup.
At flag maybe, or another method?
Thanks a lot,
Dany
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