Hello,
I use an ESP32 with two RC522 RFID modules. And for the connection to my local network make use of the W5500 LAN module.
These three modules use the SPI bus. But I can't use every three devices at the same time. The RFIDs alone is okay, also the network chip alone is okay. If I match it together, it don't work.
For my testing with all three devices I use only the "Ethernet2" libary with the "DhcpAdressPrinter" example. In these fall there is no reaction on the serial monitor. If I unplug the SCLK cable on one of two RFID readers, the LAN module have a connection and give my an IP address.
Where is my problem, if I want to use all three devices?
Thank you