publish brightness changes on MQTT

include/bmp.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #include <Adafruit_BMP280.h>
 
 namespace Bmp {

include/display.h

@@ -5,6 +5,7 @@
 #include <Adafruit_I2CDevice.h>
 #include <SPI.h>
 #include "ntp_time.h"
+#include "mqtt.h"
 
 #define DISPLAY_ADDRESS 0x70
 #define BRIGHTNESS_MIN 0
@@ -15,6 +16,13 @@
 #define DISPLAY_TIME 2000
 #define DISPLAY_TEMP_TIME 5000
 
+namespace Mqtt {
+    void publishBrightness();
+    bool connected();
+}
+
+Task tPublishBrightness(TASK_IMMEDIATE, TASK_ONCE, Mqtt::publishBrightness, &ts, false, Mqtt::connected);
+
 namespace Display {
 
   void displayColon();
@@ -47,16 +55,17 @@ namespace Display {
     }
   }
 
-  void setBrightness(unsigned int value) {
+  void setBrightness(uint8_t value) {
     brightness = value % (BRIGHTNESS_MAX+1);
     clockDisplay.setBrightness(brightness);
+    tPublishBrightness.restart();
   }
 
   void changeBrightness(bool increase) {
     increase ? setBrightness(brightness + BRIGHTNESS_STEP) : setBrightness(brightness - BRIGHTNESS_STEP);
   }
 
-  void adjustBrightness() {
+  void updateBrightness() {
     if (currentHour > 8 && currentHour < 17) {
       setBrightness(BRIGHTNESS_DAY);
     } else {
@@ -68,6 +77,7 @@ namespace Display {
     if (colonOn) {
       if (currentHour != hour()) {
         currentHour = hour();
+        updateBrightness();
         if (currentHour == 8) Wifi::reconnect();
       }
       if (currentMin != minute()) {

include/ha.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #include <ArduinoJson.h>
 #include "display.h"
 
@@ -9,11 +11,13 @@ namespace Ha {
     struct Component {
         const char* name;
         const char* id;
+        const char* type;
         char configTopic[TOPIC_SIZE];
 
         Component(const char* name, const char* id, const char* type) {
             this->name = name;
             this->id = id;
+            this->type = type;
             sprintf(configTopic, "homeassistant/%s/esp_clock/%s/config", type, id);
         }
 
@@ -41,6 +45,7 @@ namespace Ha {
     typedef void (*onMessage)(const char* msg);
     struct Command : Component {
         char commandTopic[TOPIC_SIZE];
+        char stateTopic[TOPIC_SIZE];
         onMessage f;
 
         Command(const char* name, const char* id, const char* type, onMessage f) : Component(name, id, type) {
@@ -54,6 +59,12 @@ namespace Ha {
         void buildConfig(JsonDocument& jsonDoc) override {
             Component::buildConfig(jsonDoc);
             jsonDoc["command_topic"] = commandTopic;
+            if (stateTopic[0]) jsonDoc["state_topic"] = stateTopic;
+        }
+
+        Command* withStateTopic() {
+            sprintf(stateTopic, "homeassistant/%s/esp_clock/%s/state", type, id);
+            return this;
         }
 
     };

include/mqtt.h

@@ -1,7 +1,11 @@
+#pragma once
+
 #include <queue>
 #include <AsyncMqttClient.h>
 #include <ArduinoJson.h>
 #include "ha.h"
+#include "bmp.h"
+#include "display.h"
 
 #define MQTT_HOST IPAddress(192, 168, 5, 11)
 #define MQTT_PORT 1883
@@ -36,6 +40,10 @@ namespace Mqtt {
 
     const char* espClockTopic = "homeassistant/+/esp_clock/#";
 
+    bool connected() {
+        return client.connected();
+    }
+
     void connect() {
         client.connect();
     }
@@ -51,6 +59,12 @@ namespace Mqtt {
         new Ha::AltitudeSensor{"Living room Altitude", "altitude"}
     };
 
+    Ha::Command* brightnessMqtt = (new Ha::Brightness{ "ESP Clock Brightness", "brightness",
+            [](const char* msg) {
+                Display::setBrightness(String{ msg }.toInt());
+            }
+    })->withStateTopic();
+
     Ha::Command* switches[] = {
         new Ha::Button{"ESP Clock Restart", "restart",
             [](const char* msg) {
@@ -73,11 +87,7 @@ namespace Mqtt {
                 }
             }
         },
-        new Ha::Brightness{"ESP Clock Brightness", "brightness",
-                [](const char* msg) {
-                    Display::setBrightness(String{ msg }.toInt());
-                }
-        }
+        brightnessMqtt
     };
 
     void publishComponentConfig(Ha::Component& component) {
@@ -97,6 +107,7 @@ namespace Mqtt {
         for (Ha::Component* cmp : switches) {
             publishComponentConfig(*cmp);
         }
+        // publishBrightness(Display::brightness);
         ts.deleteTask(tPublishConfig);
     }
 
@@ -111,6 +122,12 @@ namespace Mqtt {
         client.publish(Ha::Sensor::stateTopic, 0, true, message);
     }
 
+    void publishBrightness() {
+        char message[32];
+        sprintf(message, "%X", Display::brightness);
+        client.publish(brightnessMqtt->stateTopic, 0, true, message);
+    }
+
     void publishCommand() {
         if (uint8_t cmd = commands.getCurrent()) {
             char message[32];
@@ -140,6 +157,7 @@ namespace Mqtt {
             tPublishConfig.enable();
             tPublishBmp.enableIfNot();
             tPublishCommand.enableDelayed();
+            tPublishBrightness.enable();
             client.subscribe(espClockTopic, 0);
             tReConnect.disable();
             Serial.println("Connected to MQTT");
@@ -148,6 +166,7 @@ namespace Mqtt {
             tReConnect.enableDelayed();
             tPublishCommand.disable();
             tPublishBmp.disable();
+            tPublishBrightness.disable();
             Serial.println("Disconnected from MQTT");
             });
         client.onMessage(onMessage);

src/esp_clock.cpp

@@ -12,10 +12,10 @@ Task tWifiConnected(TASK_IMMEDIATE, TASK_ONCE, onWifiConnected, &ts);
 Task tButton(TASK_IMMEDIATE, TASK_ONCE, onButtonCallback, &ts);
 
 #include "wifi.h"
+#include "mqtt.h"
 #include "display.h"
 #include "bmp.h"
 #include "ntp_time.h"
-#include "mqtt.h"
 #include "ota.h"
 #include "ir.h"