search

Xinyuan-LilyGO / LilyGo-T-Relay

MIT License
70 stars 28 forks source link

Testing T-Relay W5500 Shield - discovery working but no LEDs (LinkOFF) #25

Closed linkedupbits closed 2 months ago

linkedupbits commented 8 months ago

I have the T-4 relay and the T-Relay W5500 Shield and I am trying to get the sample working.

The W5500 initializes (serial monitor prints "Ethernet W5100 Discovery !") but 

Ethernet.linkStatus()

always returns LinkOFF, and the LEDs on the RJ45 socket do not light up.

I understand I should be able to test the LEDs simply by plugging in a live network cable and supplying 3.3v and Gnd to the W5500 (without having the T-relay connected) - just for testing.

Which of the header pins (other than the SPI) are used on the T-Relay W5500 Shield and are connected ?

There should be 3 x GND and two 3v3 as per the pinout, and the SPI communication appears to be working based on successful discovery.

Thanks in advance

Llgok commented 7 months ago

I have the T-4 relay and the T-Relay W5500 Shield and I am trying to get the sample working.

The W5500 initializes (serial monitor prints "Ethernet W5100 Discovery !") but

Ethernet.linkStatus()

always returns LinkOFF, and the LEDs on the RJ45 socket do not light up.

I understand I should be able to test the LEDs simply by plugging in a live network cable and supplying 3.3v and Gnd to the W5500 (without having the T-relay connected) - just for testing.

Which of the header pins (other than the SPI) are used on the T-Relay W5500 Shield and are connected ?

There should be 3 x GND and two 3v3 as per the pinout, and the SPI communication appears to be working based on successful discovery.

Thanks in advance

Your Ethernet cable may not be properly connected.

After the W5500 device is correctly recognized, insert the router-connected Ethernet cable, and you will see "Link status: ON" on the serial port, indicating that the connection is normal. (There are 3 states: "Link status: ON" indicates a normal connection, "Link status: OFF" indicates that the Ethernet port is not plugged in, and "Link status: Unknown" indicates an unknown connection, which is a hardware error and the W5500 and Ethernet port cannot communicate.)