[NUCLEO_F767ZI] Network Ping does not work

[roland_vs]

Using a piece of code implementing a ping function works well using the PYBD board. However, using the same code (except LAN/WLAN differences) on the NUCLEO_F767ZI using the Ethernet LAN connection does not read back data.

With PYBD I get responses to multiple ping queries within the private network and from the outside as expected. I get no response with the NUCLEO_F767ZI . tcpdump Shows a request is going out from the F767 board to the gateway. So far so good.

Even-though the ping is working in the wireless situation, I checked the checksum generation with the ICMP data and this seem to be correct. When opening a socket and sending out a html page request, data is returned. So the socket.send and socket.recv work.

One thing to suspect is the use of

Code: Select all

uselect.select()

to wait for IO activity and use

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uselect.poll()

instead. However, PYBD is part of the same port (STM32) so no reason to expect different behaviour on this.

Help, any suggestions?

Using the plain MPY version of the PING code: https://gist.github.com/shawwwn/91cc897 ... 34c38195fb

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import network
import uping as nwk

nic=network.LAN()
nic.activate(1)
while(nic.isconnected()==False):
    pass

#check ip numbers etc. this all work
print(nic.ifconfig())
print(nic.config("mac"))

nwk.ping("192.168.0.1")
nwk.ping("micropython.org")