| /* | |
| Link Status | |
| This sketch prints the ethernet link status. When the | |
| ethernet cable is connected the link status should go to "ON". | |
| NOTE: Only WizNet W5200 and W5500 are capable of reporting | |
| the link status. W5100 will report "Unknown". | |
| Hardware: | |
| - Ethernet shield or equivalent board/shield with WizNet 5200/5500 | |
| Written by Cristian Maglie | |
| This example is public domain. | |
| */ | |
| void setup() { | |
| // You can use Ethernet.init(pin) to configure the CS pin | |
| //Ethernet.init(10); // Most Arduino shields | |
| //Ethernet.init(5); // MKR ETH shield | |
| //Ethernet.init(0); // Teensy 2.0 | |
| //Ethernet.init(20); // Teensy++ 2.0 | |
| //Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet | |
| //Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet | |
| Serial.begin(9600); | |
| } | |
| void loop() { | |
| auto link = Ethernet.linkStatus(); | |
| Serial.print("Link status: "); | |
| switch (link) { | |
| case Unknown: | |
| Serial.println("Unknown"); | |
| break; | |
| case LinkON: | |
| Serial.println("ON"); | |
| break; | |
| case LinkOFF: | |
| Serial.println("OFF"); | |
| break; | |
| } | |
| delay(1000); | |
| } | |