Files
arduino-home-assistant/examples/led-switch/led-switch.ino
T
alex b9f4fd7f4b Per-entity availability, deferred discovery publish, suggested precision
- Add HAAvailabilityConfig for per-entity availability_topic and payloads
- Defer discovery until MQTT connected; publish availability after discovery
- HASensor/HANumber: optional suggested_display_precision in discovery
- HASerializer/HADictionary: extend for new keys; update device types and mocks
- Docs and examples reflect availability and precision usage
- Tests updated for discovery and availability behavior
- Ignore .cursor/ in repo root
2026-05-05 17:47:55 +10:00

56 lines
1.4 KiB
Arduino

#include <Ethernet.h>
#include <ArduinoHA.h>
#define LED_PIN 9
#define BROKER_ADDR IPAddress(192,168,0,17)
byte mac[] = {0x00, 0x10, 0xFA, 0x6E, 0x38, 0x4A};
EthernetClient client;
HADevice device(mac, sizeof(mac));
HAMqtt mqtt(client, device);
// "led" is unique ID of the switch. You should define your own ID.
HASwitch led("led");
void onSwitchCommand(bool state, HASwitch* sender)
{
digitalWrite(LED_PIN, (state ? HIGH : LOW));
sender->setState(state); // report state back to the Home Assistant
}
void setup() {
pinMode(LED_PIN, OUTPUT);
digitalWrite(LED_PIN, LOW);
// you don't need to verify return status
Ethernet.begin(mac);
// set device's details (optional)
device.setName("Arduino");
device.setSoftwareVersion("1.0.0");
// set icon (optional)
led.setIcon("mdi:lightbulb");
led.setName("My LED");
// led.setPayloadOn("ENABLE");
// led.setPayloadOff("DISABLE");
// led.setStateOn("running");
// led.setStateOff("stopped");
// led.setCommandTemplate("{{ value_json.command }}");
// handle switch state
led.onCommand(onSwitchCommand);
mqtt.begin(BROKER_ADDR);
}
void loop() {
Ethernet.maintain();
mqtt.loop();
// You can also change the state at runtime as shown below.
// This kind of logic can be used if you want to control your switch using a button connected to the device.
// led.setState(true); // use any state you want
}