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>
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
// ContactSensor: a door or window contact that tells Alexa when it opens and closes (Alexa.ContactSensor).
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//
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// A reed switch connects the pin to ground while the door is closed; the internal pull-up makes the pin high when
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// it opens. A level has to hold for 50 ms before it counts. Every change is sent as a ChangeReport; ReportState
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// is answered with the state of the contact. A change while there is no session with the broker is not reported
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// later: Alexa gets the state with its next ReportState.
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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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const uint8_t CONTACT_PIN = 14; // D5 on a Wemos D1 mini
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const unsigned long DEBOUNCE_MS = 50;
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Alex2ESP alexa;
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AlexaDevice *contact;
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bool isOpen = false;
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bool lastLevel = false;
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unsigned long lastEdge = 0;
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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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void onDirective(AlexaDirective &directive)
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{
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if (directive.isReportState())
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{
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directive.stateReport().addHealthProp(EndpointHealth::OK).addContactSensorProp(isOpen).send();
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return;
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}
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directive.error(AlexaErrorType::INVALID_DIRECTIVE, "A contact takes no directives").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(CONTACT_PIN, INPUT_PULLUP);
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isOpen = lastLevel = digitalRead(CONTACT_PIN) == 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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contact = alexa.getDevice("Back Door", "esp-contact");
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contact->setDisplayCategory(DisplayCategory::CONTACT_SENSOR);
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contact->addCapability(AlexaInterfaces::ContactSensor)->setProactivelyReported(true);
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contact->addCapability(AlexaInterfaces::EndpointHealth);
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contact->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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bool level = digitalRead(CONTACT_PIN) == HIGH;
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if (level != lastLevel)
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{
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lastLevel = level;
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lastEdge = millis();
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}
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if (level != isOpen && millis() - lastEdge >= DEBOUNCE_MS)
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{
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isOpen = level;
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Serial.println(isOpen ? "[CONTACT] open" : "[CONTACT] closed");
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contact->changeReport(AlexaCause::PHYSICAL_INTERACTION)
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.addContactSensorProp(isOpen)
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.context()
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.addHealthProp(EndpointHealth::OK)
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.send();
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}
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}
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