David
69b4d59896
Light, DimmableLight, ColorTemperatureLight, ColorLight, TemperatureSensor, ContactSensor, Blind, Thermostat, Lock, Scene, Doorbell and MultiDevice on the 2.0 API: addCapability(row, instance), one onDirective() handler, the report helpers, ChangeReports from loop(), a deferred answer for the lock. Wi-Fi is waited for 30 s, then the sketch says what to check and carries on. examples/README.md has what each sketch does, its limits and the measured sizes for d1_mini: Light takes 30,616 bytes of static RAM and 332,565 of flash; all 17 sketches build with 0 warnings. test/test_examples compares the discovery object of every new sketch: 147 host tests (were 135). The sketches were compiled, not run on a board. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
// Light: a lamp that Alexa switches on and off (Alexa.PowerController).
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//
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// The lamp is the on-board LED. One handler gets every directive of the device: it answers ReportState with the
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// state of the lamp, carries out TurnOn and TurnOff, and refuses anything else.
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#include <Arduino.h>
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#include <ESP8266WiFi.h>
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#include <Alex2ESP.h>
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// Wi-Fi and the credentials of your Alex2MQTT account
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const char *WIFI_SSID = "";
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const char *WIFI_PASSWORD = "";
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const char *ALEXA_USERNAME = "";
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const char *ALEXA_PASSWORD = "";
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const char *ALEXA_ROOT_TOPIC = "";
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// The on-board LED: GPIO2 on a Wemos D1 mini, lit when the pin is low
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#ifndef LED_BUILTIN
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#define LED_BUILTIN 2
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#endif
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Alex2ESP alexa;
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bool lampOn = false;
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// Joins the Wi-Fi network and returns after 30 s at the latest. Without a connection the sketch carries on: the
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// ESP8266 keeps trying, and alexa.loop() opens the MQTT session once Wi-Fi is up.
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void connectWiFi()
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{
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WiFi.mode(WIFI_STA);
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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Serial.printf("\n[WIFI] Connecting to \"%s\"\n", WIFI_SSID);
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unsigned long started = millis();
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while (WiFi.status() != WL_CONNECTED && millis() - started < 30000)
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{
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delay(100);
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}
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if (WiFi.status() == WL_CONNECTED)
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{
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Serial.printf("[WIFI] Connected, IP address %s\n", WiFi.localIP().toString().c_str());
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}
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else
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{
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Serial.printf("[WIFI] No connection after 30 s (status %d): check WIFI_SSID and WIFI_PASSWORD. Still trying.\n",
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WiFi.status());
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}
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}
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// The state of the lamp: what the answer to a directive and the answer to ReportState carry
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void sendState(AlexaStatusMessage message)
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{
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message.addHealthProp(EndpointHealth::OK)
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.addPowerControllerProp(lampOn ? PowerController::ON : PowerController::OFF)
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.send();
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}
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void onDirective(AlexaDirective &directive)
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{
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if (directive.isReportState())
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{
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sendState(directive.stateReport());
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return;
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}
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if (directive.type == AlexaInterfaceType::POWER_CONTROLLER && (directive.is("TurnOn") || directive.is("TurnOff")))
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{
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lampOn = directive.is("TurnOn");
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digitalWrite(LED_BUILTIN, lampOn ? LOW : HIGH);
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sendState(directive.response());
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return;
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}
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directive.error(AlexaErrorType::INVALID_DIRECTIVE, "This lamp switches on and off").send();
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}
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void setup()
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{
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Serial.begin(74880);
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pinMode(LED_BUILTIN, OUTPUT);
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digitalWrite(LED_BUILTIN, HIGH);
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connectWiFi();
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// MQTT user name, MQTT password, root topic
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alexa.begin(ALEXA_USERNAME, ALEXA_PASSWORD, ALEXA_ROOT_TOPIC);
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// The name Alexa shows, and the id of the endpoint: every device of an account has its own
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AlexaDevice *lamp = alexa.getDevice("Desk Lamp", "esp-light");
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lamp->setDisplayCategory(DisplayCategory::LIGHT);
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lamp->addCapability(AlexaInterfaces::PowerController);
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lamp->addCapability(AlexaInterfaces::EndpointHealth);
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lamp->onDirective(onDirective);
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}
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void loop()
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{
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alexa.loop();
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}
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