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