kommentare eingefügt, led blinkt fehlercodes

source/nodemcu/statusclient/statusclient.ino

@@ -41,21 +41,22 @@ void init_pins() {
      */
     pinMode(REED_PIN, INPUT_PULLUP);
     pinMode(LED_PIN, OUTPUT);
-    digitalWrite(LED_PIN, LOW);
+    digitalWrite(LED_PIN, HIGH);
     Serial.println("[Pin] LED and REED initialized");
 }
 
 
 void init_wifi() {
     /*
-   * first turn wifi off and than in access point mode
+     * Creates the ssl context. Turns wifi off and than into
-   * maybe turn of is not needed!
+     * access point mode.
+     * TODO: is 'turn of' needed!
      */
     ESP8266WiFiMulti wifi;
     WiFi.mode(WIFI_OFF);
     WiFi.mode(WIFI_STA);
     wifi.addAP(SSID_1, PSK_1);
-    wifi.addAP(SSID_2, PSK_2);
+    wifi.addAP(SSID_2, NULL);
     Serial.println("[Wifi] Wifi initialized");
     wifi.run();
     if (WiFi.status() == WL_CONNECTED) {
@@ -63,8 +64,10 @@ void init_wifi() {
         Serial.println(WiFi.SSID());
         Serial.print("[Wifi] IP: ");
         Serial.println(WiFi.localIP());
+        set_clock();
   } else {
         Serial.println("[Wifi] Error: Failed to connect");
+        signal_wifi_failed();
   }
 }
 
@@ -83,23 +86,95 @@ door_state read_door_state() {
     return DOOR_CLOSED;
 }
 
-void toggle_led(door_state state) {
+void signal_door_changed() {
     /*
-     * turns onboard led on or depends on the door state 
+     * LED signal, if door is opened
      */
-    if (state == DOOR_OPEN) {
+    uint8_t count = 2;
+    for(uint8_t i=0; i!= count; ++i) {
         digitalWrite(LED_PIN, LOW);
-    } else {
+        delay(100);
         digitalWrite(LED_PIN, HIGH);
+        delay(100);
     }
+}
+
+void signal_send_successful() {
+    /*
+     * LED signal, if new status was send successful
+     */
+    uint8_t count = 5;
+    for(uint8_t i=0; i!= count; ++i) {
+        digitalWrite(LED_PIN, LOW);
+        delay(100);
+        digitalWrite(LED_PIN, HIGH);
+        delay(100);
+    }
+}
+
+void signal_clock_failed() {
+    /*
+     * LED signal, if time setting failed
+     */
+    uint8_t count = 2;
+    for(uint8_t i=0; i!= count; ++i) {
+        digitalWrite(LED_PIN, LOW);
         delay(500);
+        digitalWrite(LED_PIN, HIGH);
+        delay(500);
+    }
+    delay(2000);
+}
+
+void signal_wifi_failed() {
+    /*
+     * LED signal, if wifi initialication was failed
+     */
+    uint8_t count = 3;
+    for(uint8_t i=0; i!= count; ++i) {
+        digitalWrite(LED_PIN, LOW);
+        delay(500);
+        digitalWrite(LED_PIN, HIGH);
+        delay(500);
+    }
+    delay(2000);
+}
+
+void signal_connect_failed() {
+    /*
+     * LED signal, if door is opened
+     */
+    uint8_t count = 4;
+    for(uint8_t i=0; i!= count; ++i) {
+        digitalWrite(LED_PIN, LOW);
+        delay(500);
+        digitalWrite(LED_PIN, HIGH);
+        delay(500);
+    }
+    delay(2000);
+}
+
+void signal_send_failed() {
+    /*
+     * LED signal, if door is opened
+     */
+    uint8_t count = 5;
+    for(uint8_t i=0; i!= count; ++i) {
+        digitalWrite(LED_PIN, LOW);
+        delay(500);
+        digitalWrite(LED_PIN, HIGH);
+        delay(500);
+    }
+    delay(2000);
 }
 
 void set_clock() {
-
+    /*
+     * We need time for certificate authorization
+     */
     configTime(TZ_STRING, NTP_URL);
 
-  Serial.print("Waiting for NTP time sync: ");
+    Serial.print("[Clock] Waiting for NTP time sync");
     time_t now = time(nullptr);
     while (now < 8 * 3600 * 2) {
         delay(500);
@@ -109,15 +184,14 @@ void set_clock() {
     Serial.println("");
     struct tm timeinfo;
     gmtime_r(&now, &timeinfo);
-  Serial.print("Current time: ");
+    Serial.print("[Clock] Current time: ");
-  Serial.print(asctime(&timeinfo));
+    Serial.println(asctime(&timeinfo));
 }
 
 int send_status(door_state state) {
 
     /*
-     * geht die initialisierung mit einem byte länge?
+     * Inits wifi (if needed) and send the status
-     * terminiert strcpy den status mit \0?
      */
     char status[2] = "";
 
@@ -135,17 +209,19 @@ int send_status(door_state state) {
     BearSSL::PrivateKey client_key(CLIENT_KEY);
     client.setTrustAnchors(&server_cert);
     client.setClientRSACert(&client_cert, &client_key);
-    delay(500);
+    delay(200);
     Serial.println("[Ctx] SSL Context initialized");
-    Serial.print("[Ctx] Free Heap: ");
+    delay(200);
-    Serial.println(ESP.getFreeHeap());
+    if (WiFi.status() != WL_CONNECTED) {
-    delay(500);
+        init_wifi();
+    }
     Serial.printf("[Send] Connect to %s:%i\n", SERVER_URL, SERVER_PORT); 
     client.connect(SERVER_URL, SERVER_PORT);
     if (!client.connected()) {
         Serial.println("[Send] Can't connect to server");
         Serial.print("[Send] SSL Error: ");
         Serial.println(client.getLastSSLError());
+        signal_send_failed();
         client.stop();
         return 1;
     } else {
@@ -154,34 +230,19 @@ int send_status(door_state state) {
         Serial.println("[Send] Connection successful established");
         Serial.printf("[Send] Send status: %s\n", status);
         client.write(status);
-        
+        signal_send_successful();
     }
     return 0;
 }
 
 
-
-
-
 void setup() {
 
     /*
      * things to do once at boot time
      */
     init_serial();
-    Serial.print("[Init] Free Heap ( after serial init): ");
-    Serial.println(ESP.getFreeHeap());
     init_pins();
-    Serial.print("[Init] Free Heap (after pins init): ");
-    Serial.println(ESP.getFreeHeap());
-    init_wifi();
-    Serial.print("[Init] Free Heap (after wifi init): ");
-    Serial.println(ESP.getFreeHeap());
-    delay(500);
-    set_clock();
-    Serial.print("[Init] Free Heap (after setting clock): ");
-    Serial.println(ESP.getFreeHeap());
-    delay(500);
 }
 
 void loop() {
@@ -192,11 +253,10 @@ void loop() {
     new_door_state = read_door_state();
     if (new_door_state != current_door_state) {
         Serial.printf("[Loop] Status has changed to %i\n", new_door_state);
-        toggle_led(new_door_state);
+        signal_door_changed();;
-        send_status(new_door_state);
+        if (send_status(new_door_state) == 0) {
             current_door_state = new_door_state;
         }
-    Serial.print("[Loop] Free Heap: ");
+    }
-    Serial.println(ESP.getFreeHeap());
     delay(FREQUENCY);
 }