Added flash when alarm gets triggered

src/main.cpp

@@ -9,7 +9,6 @@ const char *ssid = "PET Aflytningsvogn #43";
 const char *password = "zwr33htm";
 
 const char *mqtt_server = "192.168.24.215";
-// const char *mqtt_server = "test.mosquitto.org";
 
 WiFiClient espClient;
 PubSubClient client(espClient);
@@ -18,6 +17,7 @@ const int lm35_pin = 34; /* LM35 O/P pin */
 const int mic_pin = 35;
 const int light_pin = 32;
 const int motion_pin = 33;
+const int led_pin = 25;
 
 #define ADC_VREF_mV 3300.0 // in millivolt
 #define ADC_RESOLUTION 4096.0
@@ -67,6 +67,8 @@ void reconnect()
         if (client.connect("ESP8266Client"))
         {
             Serial.println("connected");
+
+            client.subscribe("alarm/state");
         }
         else
         {
@@ -79,6 +81,35 @@ void reconnect()
     }
 }
 
+bool flashTriggeredLed = false;
+bool flashArmingLed = false;
+
+int flashStatus = 0;
+
+void callback(char *topic, byte *payload, unsigned int length)
+{
+
+    Serial.print("Message arrived [");
+    Serial.print(topic);
+    Serial.print("] ");
+    for (int i = 0; i < length; i++)
+    {
+        Serial.print((char)payload[i]);
+    }
+    Serial.println();
+    StaticJsonDocument<512> doc;
+    deserializeJson(doc, payload, length);
+
+    const char *status = doc["status"];
+
+    flashTriggeredLed = strcmp(doc["status"], "Triggered") == 0;
+    flashArmingLed = strcmp(doc["status"], "Arming") == 0 || strcmp(doc["status"], "Disarming") == 0;
+    if (flashTriggeredLed == false && flashArmingLed == false)
+    {
+        digitalWrite(led_pin, false);
+    }
+}
+
 void setup()
 {
     Serial.begin(115200);
@@ -87,11 +118,13 @@ void setup()
     pinMode(light_pin, INPUT);
     pinMode(motion_pin, INPUT);
 
+    pinMode(led_pin, OUTPUT);
     pinMode(13, OUTPUT);
     digitalWrite(13, HIGH);
 
     setup_wifi();
     client.setServer(mqtt_server, 1883);
+    client.setCallback(callback);
 }
 
 #define SOUND_MEASURE_INTERVAL 1000 * 10
@@ -101,6 +134,7 @@ void setup()
 unsigned long previousTemperatureMillis = 0;
 unsigned long previousSoundMillis = 0;
 unsigned long previousHighestSoundMillis = 0;
+unsigned long previousFlashMillis = 0;
 
 bool lastMotionState;
 
@@ -120,6 +154,27 @@ void loop()
 
     unsigned long currentMillis = millis();
 
+    if (currentMillis - previousFlashMillis >= 100 && flashTriggeredLed)
+    {
+        digitalWrite(led_pin, !flashStatus);
+        flashStatus = !flashStatus;
+        previousFlashMillis = currentMillis;
+    }
+
+    if (currentMillis - previousFlashMillis >= 1000 && flashArmingLed && flashStatus == 0)
+    {
+        digitalWrite(led_pin, 0);
+        flashStatus = (flashStatus + 1) % 6;
+        previousFlashMillis = currentMillis;
+    }
+
+    if (currentMillis - previousFlashMillis >= 100 && flashArmingLed && flashStatus > 0)
+    {
+        digitalWrite(led_pin, flashStatus % 2 == 0);
+        flashStatus = (flashStatus + 1) % 6;
+        previousFlashMillis = currentMillis;
+    }
+
     if (currentMillis - previousTemperatureMillis >= TEMP_MEASURE_INTERVAL)
     {
         // save the last time you blinked the LED
@@ -183,7 +238,7 @@ void loop()
 
     uint16_t soundValue = analogRead(mic_pin);
 
-    if (soundValue > 3072 && (currentMillis - previousHighestSoundMillis > 1000))
+    if (soundValue > 3300 && (currentMillis - previousHighestSoundMillis > 1000))
     {
         previousHighestSoundMillis = currentMillis;