Broadcast Ethernet from F405 and DP83848

[hybridA]

that's exactly what I did - just changed the makefile to use the REV_D config, and the sample app worked great!
Also got udp broadcast messages working.
I noticed it takes a few seconds after calling lwipinit() until the driver is truly ready. If my app does not wait, the sendto() never succeeds.

Since open-loop sleeps are risky, I wrote a little wrapper around netif_is_link_up(), in lwipthread.c:

Code: Select all

bool lwipReady() {
  return netif_is_link_up(&thisif);
}

in my app I then call:

Code: Select all

lwipInit(nullptr);
while (!lwipReady()) {
   chThdSleepMilliseconds(50);
}

Is there already a way of checking if the driver is ready?

[mikeprotts]

Glad this is now working for you.

I wouldn't expect much delay from lwipinit() to being ready - is it connected to an Ethernet switch or directly to another host? If another host, it may be that it's the other end of the cable that's slow.

Mike

[Giovanni]

Hi,

It should be macPollLinkStatus(), it is done at MAC driver level.

Giovanni

[hybridA]

The delay is the same (or at least very similar) if connected directly to PC or through router. it's around 2sec. Not an issue in my application.
macPollLinkStatus() worked great!