add support for IR commands and publish them on MQTT

include/display.h

@@ -1,17 +1,20 @@
 #include <Adafruit_LEDBackpack.h>   // Support for the Backpack FeatherWing
 #include <Adafruit_GFX.h>           // Adafruit's graphics library
+#include <Adafruit_I2CDevice.h>
 #include <SPI.h>
 #include "ntp_time.h"
 
 #define DISPLAY_ADDRESS 0x70
 #define BRIGHTNESS 1
 
+uint8_t brightness = BRIGHTNESS;
+
 // Create display object
 Adafruit_7segment clockDisplay = Adafruit_7segment();
 
 void setupDisplay() {
   clockDisplay.begin(DISPLAY_ADDRESS);
-  clockDisplay.setBrightness(BRIGHTNESS);
+  clockDisplay.setBrightness(brightness);
 }
 
 void displayTime() {
@@ -33,7 +36,21 @@ void displayTime() {
   }
 }
 
+void changeBrightness(bool increase) {
+  increase ? brightness = (brightness+2) % 15 : brightness = (brightness-2) % 15;
+}
+
+void adjustBrightness() {
+  int currentHour = hour();
+  if (currentHour > 9 && currentHour < 17) {
+    brightness = 11;
+  } else {
+    brightness = 1;
+  }
+}
+
 void displayColon(bool on) {
+    clockDisplay.setBrightness(brightness);
 	  clockDisplay.drawColon(on);
 	  clockDisplay.writeDisplay();
 }

include/ir.h

@@ -0,0 +1,57 @@
+#include <queue>
+#include <AsyncMqttClient.h>
+#include <IRremoteESP8266.h>
+#include <IRrecv.h>
+
+#define IR_INPUT_PIN    12
+
+#define MQTT_HOST IPAddress(192, 168, 5, 138)
+#define MQTT_PORT 1883
+
+IRrecv irrecv(IR_INPUT_PIN);
+decode_results results;
+
+AsyncMqttClient mqttClient;
+
+std::queue<uint8_t> irCommands;
+uint8_t lastIrCommand = 0x9F;
+
+void setupIr() {
+    mqttClient.setServer(MQTT_HOST, MQTT_PORT);
+    Serial.println("Connecting to MQTT...");
+    mqttClient.connect();
+
+    irrecv.enableIRIn();  // Start the receiver
+}
+
+void sendCommand() {
+    if (!irCommands.empty() && mqttClient.connected()) {
+        char message[32];
+        sprintf(message, "%X", irCommands.front());
+        if (mqttClient.publish("esp_clock/sensor/ir/value", 0, true, message) != 0) {
+            Serial.print(irCommands.front(), HEX);
+            Serial.println();
+            irCommands.pop();
+        }
+    }
+}
+
+bool readIrCommand() {
+    bool newCommand = false;
+    if (irrecv.decode(&results)) {
+        if (results.decode_type == NEC) {
+            Serial.print(F(" C=0x"));
+            Serial.print(results.command, HEX);
+            Serial.println();
+            lastIrCommand = results.command;
+            irCommands.push(results.command);
+            newCommand = true;
+        }
+        irrecv.resume();  // Receive the next value
+    } 
+    return newCommand;
+}
+
+uint8_t getCurrentCommand() {
+    return irCommands.empty() ? 0 : irCommands.front();
+}

include/wifi.h

@@ -11,7 +11,8 @@ private:
 public:
   void setup() {
     ESP8266WiFiMulti wifiMulti;
-    wifiMulti.addAP("IoT", "***REMOVED***");
+    wifiMulti.addAP("OpenWrt", "***REMOVED***");
+    // wifiMulti.addAP("IoT", "***REMOVED***");
     wifiMulti.addAP("Miracle", "***REMOVED***");
     
     Serial.println("Connecting to WiFi netowrk.");

platformio.ini

@@ -15,12 +15,14 @@ framework = arduino
 lib_deps = 
 	arduino-libraries/NTPClient@^3.1.0
 	adafruit/Adafruit LED Backpack Library@^1.1.8
+	adafruit/Adafruit GFX Library@^1.10.7
 	adafruit/Adafruit BusIO@^1.6.0
 	jchristensen/Timezone@^1.2.4
+	ottowinter/AsyncMqttClient-esphome@^0.8.5
+	crankyoldgit/IRremoteESP8266@^2.7.18
 
 [env:laptop_home]
-upload_port = /dev/ttyUSB0
 
 [env:ota_home]
-upload_port = 192.168.6.191
+upload_port = 192.168.5.191
 upload_protocol = espota

src/esp_clock.cpp

@@ -3,29 +3,67 @@
 #include "ota.h"
 #include "ntp_time.h"
 #include "display.h"
+#include "ir.h"
 
 #define STAY_CONNECTED_AFTER_BOOT 1*60
 
 int currentHour = -1;
 time_t timeAtStartup;
+bool avrOn = false;
 
 Wifi wifi;
 
 void setup() {
+  setupDisplay();
+  displayTime();
+  displayColon(false);
+
   Serial.begin(9600);                      // Start the serial console
 
   wifi.setup();
 
   setupOTA();
 
-  setupDisplay();
-
   setupTime();
   timeAtStartup = updateTime();
+  adjustBrightness();
+
+  setupIr();
 }
 
-void loop() {  
+void loop() {
+  if (readIrCommand()) {
+    switch (lastIrCommand)
+    {
+    case 0x9F:
+      avrOn = false;
+      timeAtStartup = now();
+      break;    
+    case 0xC4:
+    case 0xD0:
+    case 0xC0:
+      avrOn = true;
+      if (WiFi.status() == WL_DISCONNECTED) {
+        wifi.reconnect();
+        // connect on wifi connected
+        mqttClient.connect();
+      }
+      break;
+    default:
+      break;
+    }
+  }
+  if (!avrOn && getCurrentCommand() == 0xC7) {
+    changeBrightness(true);
+    irCommands.pop();
+  }
+  if (!avrOn && getCurrentCommand() == 0xC8) { 
+    changeBrightness(false);
+    irCommands.pop();
+  }
+  sendCommand();
   if ((currentHour != hour())) {
+    adjustBrightness();
     wifi.reconnect();
     wifi.printStatus();
     if (WiFi.status() == WL_CONNECTED) {
@@ -35,7 +73,7 @@ void loop() {
   }
   if (WiFi.status() == WL_CONNECTED) {
     ArduinoOTA.handle();
-    if (difftime(now(), timeAtStartup) > STAY_CONNECTED_AFTER_BOOT) {
+    if ((difftime(now(), timeAtStartup) > STAY_CONNECTED_AFTER_BOOT) && !avrOn) {
       wifi.disconnect();
     }
   }