Ethernet not connected cause lost connection IoT Cloud

ptillisch · May 19, 2025, 4:05pm

That is correct. These functions are defined in the original "Ethernet" library for the WIZnet Ethernet controllers, but were never defined in the variant of the library for the Portenta H7.

This was reported to the developers of that library here:

github.com/arduino/ArduinoCore-mbed

Ethernet.setRetransmissionTimeout, Ethernet.setRetransmissionCount

opened 09:42PM - 23 Sep 22 UTC

salasidis

Both of these functions are defined in the Ethernet.h header, but the actual cod…e is nowhere to be found, and I get a linker error ` Ethernet.setRetransmissionTimeout(150); Ethernet.setRetransmissionCount(1); ` ` Z:\User\RS\EnviroWatch/EthernetInterface.ino:126: undefined reference to arduino::EthernetClass::setRetransmissionTimeout(unsigned short) Z:\User\RS\EnviroWatch/EthernetInterface.ino:127: undefined reference to arduino::EthernetClass::setRetransmissionCount(unsigned char) ` Is this an oversight or by design?

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Ethernet not connected cause lost connection IoT Cloud

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