Looking in the datasheet for the W5500 shows that there are 2 modes Variable Length Data Mode, and Fixed Length Data Mode.

2.2.3 Data Phase

With the Control Phase set by the SPI Operation Mode Bits OM[1:0], the Data Phase
is set by two types of length, one type is the N-Bytes length (VDM mode ...

I see that you've mentioned the CS is pulled low on the board. However, would it be possible to connect CS to the GPIO? I have this type https://www.amazon.de/-/en/TECNOIOT-USR-ES1-W5500-Ethernet-Converter/dp/B07RGLN436 of W5500 module and when I connect the CS to GND it does not work.... It ...

I believe the ENOMEM in this case is caused by the fact the ARP lookup queue is full. The fact the other device is no online, means there is no entry in the ARP table for it. So when you try to send a UDP packet it first needs to lookup the MAC address of the remote host in the ARP table. It's not ...

Did you find a solution?

I’m wanting to run a dhcp server on an Ethernet interface and have the softAP WiFi enabled. I have found that when I do this the Ethernet interface no longer issues dhcp addresses. When you connect to the soft ap I see the logs issue 2 identical ip addresses. So clearly the ...

I have a situation where I am using a UART1 (or 2) on pins mapped through the GPIO matrix, and I am using the IRAM interrupt. HOwever when I then try to use LitteFS to save to FLASH I get a Panic.

I am using a custom built PCB with an ESP WROVER-E and I'm using the Arduino Framework via platform.io ...