No ping or connection after successful W5100 connection
Ethernet Chips
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Ethernet Chips
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RE: No ping or connection after successful W5100 connection
by omi ·
I have now changed to an UDP socket instead.
The same problem occurs: UDP communication works and when I power-cycle the W5100 chip, the connection to the UDP socket is lost. Pinging is not working either.
RE: RE: No ping or connection after successful W5100 connection
by Eugeny ·
Pinging has nothing to do with sockets, it is another part of the chip’s circuit/logic.
The possible causes are:
Connect device directly to your PC and check the behavior - if it gets link up, sends any packets (use Wireshark).
RE: No ping or connection after successful W5100 connection
by omi ·
Thanks for answer. The cause of the issue is found.
There is an embedded switch between W5100 and the PC Ethernet port. The switch and W5100 was auto-negotiating the bit-rate (OPMODE2-0 pins set to 000). Between W5100 and the switch there was a capacitive PHY. The bit-rate negotiated was too fast for this. After setting OPMODE2-0 pins to 111 (Manual selection of 10 BASE-T HDX), the connection problem was solved.