change brightness over MQTT

include/display.h

@@ -7,9 +7,11 @@
 #include "ntp_time.h"
 
 #define DISPLAY_ADDRESS 0x70
-#define BRIGHTNESS_NIGHT 0
-#define BRIGHTNESS_DAY 11
+#define BRIGHTNESS_MIN 0
+#define BRIGHTNESS_MAX 15
 #define BRIGHTNESS_STEP 1
+#define BRIGHTNESS_NIGHT BRIGHTNESS_MIN
+#define BRIGHTNESS_DAY 11
 #define DISPLAY_TIME 2000
 #define DISPLAY_TEMP_TIME 5000
 
@@ -45,18 +47,21 @@ namespace Display {
     }
   }
 
-  void changeBrightness(bool increase) {
-    increase ? brightness = (brightness + BRIGHTNESS_STEP) % 15 : brightness = (brightness - BRIGHTNESS_STEP) % 15;
+  void setBrightness(unsigned int value) {
+    brightness = value % (BRIGHTNESS_MAX+1);
     clockDisplay.setBrightness(brightness);
   }
 
+  void changeBrightness(bool increase) {
+    increase ? setBrightness(brightness + BRIGHTNESS_STEP) : setBrightness(brightness - BRIGHTNESS_STEP);
+  }
+
   void adjustBrightness() {
     if (currentHour > 8 && currentHour < 17) {
-      brightness = BRIGHTNESS_DAY;
+      setBrightness(BRIGHTNESS_DAY);
     } else {
-      brightness = BRIGHTNESS_NIGHT;
+      setBrightness(BRIGHTNESS_NIGHT);
     }
-    clockDisplay.setBrightness(brightness);
   }
 
   void drawColon(bool colonOn) {

include/ha.h

@@ -1,4 +1,5 @@
 #include <ArduinoJson.h>
+#include "display.h"
 
 #define JSON_SIZE   512
 #define TOPIC_SIZE  255
@@ -75,6 +76,22 @@ namespace Ha {
 
     };
 
+    struct Brightness : Command {
+        static constexpr const char* type = "number";
+
+        Brightness(const char* name, const char* id, onMessage f) : Command(name, id, type, f) {
+            sprintf(commandTopic, "homeassistant/%s/esp_clock/%s", type, id);
+        }
+
+        void buildConfig(JsonDocument& jsonDoc) override {
+            Command::buildConfig(jsonDoc);
+            jsonDoc["min"] = BRIGHTNESS_MIN;
+            jsonDoc["max"] = BRIGHTNESS_MAX;
+            jsonDoc["step"] = BRIGHTNESS_STEP;
+        }
+
+    };
+
     struct Sensor : Component {
         const char* deviceClass;
         const char* unitMeasure;

include/mqtt.h

@@ -45,24 +45,24 @@ namespace Mqtt {
         client.disconnect();
     }
 
-    Ha::Sensor sensors[] = {
-        Ha::TemperatureSensor{"Living room Temperature", "temperature"},
-        Ha::PressureSensor{"Living room Pressure", "pressure"},
-        Ha::AltitudeSensor{"Living room Altitude", "altitude"}
+    Ha::Sensor* sensors[] = {
+        new Ha::TemperatureSensor{"Living room Temperature", "temperature"},
+        new Ha::PressureSensor{"Living room Pressure", "pressure"},
+        new Ha::AltitudeSensor{"Living room Altitude", "altitude"}
     };
 
-    Ha::Command switches[] = {
-        Ha::Button{"ESP Clock Restart", "restart",
+    Ha::Command* switches[] = {
+        new Ha::Button{"ESP Clock Restart", "restart",
             [](const char* msg) {
                 if (String { "PRESS" }.equals(msg)) ESP.restart();
             }
         },
-        Ha::Switch{"ESP Clock Led", "led",
+        new Ha::Switch{"ESP Clock Led", "led",
             [](const char* msg) {
                 String{ "ON" }.equals(msg) ? digitalWrite(LED_BUILTIN, LOW) : digitalWrite(LED_BUILTIN, HIGH);
             }
         },
-        Ha::Switch{"ESP Clock Format 24h", "format_24h",
+        new Ha::Switch{"ESP Clock Format 24h", "format_24h",
             [](const char* msg) {
                 if (String{ "ON" }.equals(msg)) {
                     Display::hourFormat24 = true;
@@ -72,6 +72,11 @@ namespace Mqtt {
                     Display::drawTime();
                 }
             }
+        },
+        new Ha::Brightness{"ESP Clock Brightness", "brightness",
+                [](const char* msg) {
+                    Display::setBrightness(String{ msg }.toInt());
+                }
         }
     };
 
@@ -86,11 +91,11 @@ namespace Mqtt {
     }
 
     void publishConfig() {
-        for (Ha::Component& cmp : sensors) {
-            publishComponentConfig(cmp);
+        for (Ha::Component* cmp : sensors) {
+            publishComponentConfig(*cmp);
         }
-        for (Ha::Component& cmp : switches) {
-            publishComponentConfig(cmp);
+        for (Ha::Component* cmp : switches) {
+            publishComponentConfig(*cmp);
         }
         ts.deleteTask(tPublishConfig);
     }
@@ -122,9 +127,9 @@ namespace Mqtt {
         char msg[len + 1];
         memcpy(msg, payload, len);
         msg[len] = 0;
-        for (Ha::Command cmd : switches) {
-            if (String{ cmd.commandTopic }.equals(topic)) {
-                cmd.f(msg);
+        for (Ha::Command* cmd : switches) {
+            if (String{ cmd->commandTopic }.equals(topic)) {
+                cmd->f(msg);
                 return;
             }
         }