Add 'v2.ino'

v2.ino

@@ -0,0 +1,124 @@
+#include <ESP8266WiFi.h>
+#include <ESP8266HTTPClient.h>
+#include <WiFiClientSecureBearSSL.h>   // <-- Use BearSSL client
+
+// ---------- Wi-Fi ----------
+const char* ssid     = "SSIDHERE";
+const char* password = "PASSWORDHERE";
+
+// ---------- ntfy ----------
+const String ntfyServerUrl = "https://ntfy.sh/TOPIC";
+
+// ---------- Healthchecks.io ----------
+const char* HC_URL       = "https://hc-ping.com/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
+const unsigned long PING_INTERVAL = 5UL * 60UL * 1000UL; // 5 minutes
+
+// ---------- Hardware ----------
+const int powerStatusPin = 5;   // D1 – optocoupler
+const int ledPin         = 2;   // Built-in blue LED (active-low)
+
+// ---------- State ----------
+bool previousPowerStatus = false;
+unsigned long lastPing   = 0;
+
+BearSSL::WiFiClientSecure wifiClient;   // Secure client for both ntfy & HC
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(powerStatusPin, INPUT_PULLUP);
+  pinMode(ledPin, OUTPUT);
+
+  // ---- Wi-Fi ----
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  Serial.print(F("Connecting to Wi-Fi"));
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print('.');
+  }
+  Serial.println();
+  Serial.println(F("Connected! IP: "));
+  Serial.println(WiFi.localIP());
+
+  // Allow insecure TLS (self-signed ntfy or HC certs) – remove in prod if you have proper certs
+  wifiClient.setInsecure();
+
+  // Optional: tell HC the check just started
+  pingHealthchecks(String(HC_URL) + "/start");
+}
+
+void loop() {
+  // ----- LED blink -----
+  digitalWrite(ledPin, LOW);   delay(500);
+  digitalWrite(ledPin, HIGH);  delay(500);
+
+  // ----- Power monitoring -----
+  bool current = digitalRead(powerStatusPin);
+  if (current != previousPowerStatus) {
+    if (current == LOW) {               // LOW = power ON
+      Serial.println(F("Power Restored."));
+      sendNotification("Power is on! Control MDF is back on mains power.");
+    } else {
+      Serial.println(F("Power Outage Detected!"));
+      sendNotification("Power is off! Control MDF is on battery power.");
+    }
+    previousPowerStatus = current;
+  }
+
+  // ----- Healthchecks heartbeat -----
+  unsigned long now = millis();
+  if (now - lastPing >= PING_INTERVAL) {
+    lastPing = now;
+    pingHealthchecks(HC_URL);
+  }
+
+  delay(1000);   // debounce / loop pacing
+}
+
+// ---------------------------------------------------------------
+// Send ntfy notification (unchanged, just uses the shared client)
+// ---------------------------------------------------------------
+void sendNotification(const String& message) {
+  if (WiFi.status() != WL_CONNECTED) {
+    Serial.println(F("Wi-Fi lost – cannot send ntfy"));
+    return;
+  }
+
+  HTTPClient http;
+  http.begin(wifiClient, ntfyServerUrl);
+  http.addHeader("Content-Type", "text/plain");
+
+  Serial.print(F("ntfy → "));
+  Serial.println(message);
+
+  int code = http.POST(message);
+  Serial.print(F("ntfy response: "));
+  Serial.println(code);
+
+  http.end();
+}
+
+// ---------------------------------------------------------------
+// Ping healthchecks.io – tiny HTTPS GET
+// ---------------------------------------------------------------
+void pingHealthchecks(const String& url) {
+  if (WiFi.status() != WL_CONNECTED) {
+    Serial.println(F("No Wi-Fi for HC ping"));
+    return;
+  }
+
+  HTTPClient http;
+  http.setTimeout(10000);               // 10 s timeout
+  http.begin(wifiClient, url);          // HTTPS
+
+  Serial.print(F("HC ping → "));
+  Serial.println(url);
+
+  int code = http.GET();
+  if (code > 0) {
+    Serial.printf("HC OK (code %d)\n", code);
+  } else {
+    Serial.printf("HC failed: %s\n", http.errorToString(code).c_str());
+  }
+  http.end();
+}