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nixie-clock/firmware/uniclock/lib/arduino-home-assistant-main/examples/binary-sensor/binary-sensor.ino
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2026-10-25 20:48:04 +01:00
#include <Ethernet.h>
#include <ArduinoHA.h>
#define INPUT_PIN 9
#define BROKER_ADDR IPAddress(192,168,0,17)
byte mac[] = {0x00, 0x10, 0xFA, 0x6E, 0x38, 0x4A};
unsigned long lastReadAt = millis();
bool lastInputState = false;
EthernetClient client;
HADevice device(mac, sizeof(mac));
HAMqtt mqtt(client, device);
// "input" is unique ID of the sensor. You should define you own ID.
// "door" is device class (based on the class HA displays different icons in the panel)
// "true" is initial state of the sensor. In this example it's "true" as we use pullup resistor
HABinarySensor sensor("input", "door", true);
void setup() {
pinMode(INPUT_PIN, INPUT_PULLUP);
lastInputState = digitalRead(INPUT_PIN);
// you don't need to verify return status
Ethernet.begin(mac);
// set device's details (optional)
device.setName("Arduino");
device.setSoftwareVersion("1.0.0");
sensor.setName("Door sensor"); // optional
mqtt.begin(BROKER_ADDR);
}
void loop() {
Ethernet.maintain();
mqtt.loop();
if ((millis() - lastReadAt) > 30) { // read in 30ms interval
// library produces MQTT message if a new state is different than the previous one
sensor.setState(digitalRead(INPUT_PIN));
lastInputState = sensor.getState();
lastReadAt = millis();
}
}