Add support for BRIGHTNESS_CONTROLLER

examples/lightWithBrightness.cpp

@@ -0,0 +1,110 @@
+#include <Arduino.h>
+
+#ifdef ESP32
+#include <WiFi.h>
+#else
+#include <ESP8266WiFi.h>
+#endif
+
+#include <Alex2ESP.h>
+
+// Define constants for WiFi and Alexa Client configuration
+const char *WIFI_SSID = "";
+
+const char *ALEXA_USERNAME = "";
+const char *ALEXA_PASSWORD = "";
+const char *ALEXA_ROOT_TOPIC = "";
+
+// Create the Alexa client object
+Alex2ESP alexClient;
+AlexaDevice* device1;
+
+// Initial state for the light (PowerController)
+PowerController outputState = PowerController::OFF;
+int brightness=100;
+void setup() {
+  // Initialize the LED as output
+  pinMode(LED_BUILTIN, OUTPUT);
+  
+  // Initialize serial communication for debugging
+  Serial.begin(74880);
+
+  // Connect to Wi-Fi
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(WIFI_SSID);
+
+  Serial.print("[WIFI] Connecting to WiFi");
+
+  while (WiFi.status() != WL_CONNECTED) {
+    Serial.print(".");
+    delay(100);
+  }
+
+  Serial.println();
+  Serial.printf("[WIFI] Connected to SSID: %s, IP address: %s\n", WiFi.SSID().c_str(), WiFi.localIP().toString().c_str());
+
+  // Initialize the Alexa client
+  alexClient.begin(ALEXA_USERNAME, ALEXA_PASSWORD, ALEXA_ROOT_TOPIC);
+
+  // Register a new device with a unique ID and name
+  device1 = alexClient.getDevice("Test Lamp", "ESP-01");
+
+  // Set the device's display category to LIGHT
+  device1->setDisplayCategory(DisplayCategory::LIGHT);
+
+  // Add a power controller capability to the device
+  device1->addCapability(AlexaInterfaceType::POWER_CONTROLLER);
+
+  // Add a brightness controller to the device to allow dimming
+  device1->addCapability(AlexaInterfaceType::BRIGHTNESS_CONTROLLER);
+
+  // Register event listener for "ReportState" directive
+  device1->registerEvent("ReportState", [](const JsonDocument& directive, const AlexaInterfaceType& type) {
+    // Build and send status report
+    device1->buildStatusMessage(directive["header"]["correlationToken"])
+      .AddHealthProp(EndpointHealth::OK)
+      .AddPowerControllerProp(outputState)
+      .AddBrightnessControllerProp(brightness)
+      .send();
+  });
+
+  // Register event listener for "Event" directive to handle state changes
+  device1->registerEvent("Event", [](const JsonDocument& directive, const AlexaInterfaceType& type) {
+    if (type == AlexaInterfaceType::POWER_CONTROLLER) {
+      if (directive["header"]["name"] == "TurnOn") {
+        outputState = PowerController::ON;
+        Serial.println("Turning ON");
+      } else if (directive["header"]["name"] == "TurnOff") {
+        outputState = PowerController::OFF;
+        Serial.println("Turning OFF");
+      }
+    }else if (type == AlexaInterfaceType::BRIGHTNESS_CONTROLLER) {
+      if(directive["header"]["name"]=="SetBrightness"){
+        brightness=directive["payload"]["brightness"];
+        Serial.println("setting brightness to: "+brightness);
+        outputState = PowerController::ON;
+      }
+    }else{
+      return;
+    }
+
+      // Send the updated state after change
+      device1->buildStatusMessage(directive["header"]["correlationToken"], true)
+        .AddHealthProp(EndpointHealth::OK)
+        .AddPowerControllerProp(outputState)
+        .AddBrightnessControllerProp(brightness)
+        .send();
+  });
+}
+
+void loop() {
+  // Process Alexa client communication
+  alexClient.loop();
+
+  // Update the state of the LED based on the power controller state and brightness
+  if(outputState == PowerController::ON){
+    analogWrite(LED_BUILTIN,map(brightness,0,100,255,0));
+  }else{
+    digitalWrite(LED_BUILTIN, true);
+  }
+}