[CODE] more failsafe actions, new hostname

lightscontrol-client.ino

@@ -1,6 +1,13 @@
+/*
+ * Outside Lighting Controll - ESP8266 Client
+ * 
+ * copyright: Jannik Beyerstedt | http://jannikbeyerstedt.de | code@jannikbeyerstedt.de
+ * license: http://www.gnu.org/licenses/gpl-3.0.txt GPLv3 License
+ */
+
 #include <ESP8266WiFi.h>
 
-const char* host = "ursaminor.local";
+const char* host = "ursaminor.fra80";
 String serviceUri = "/service.php";
 const int httpPort = 8088;
 
@@ -10,39 +17,61 @@ bool lightState = false;
 unsigned int lightTime = 0;
 bool updated = false;
 
-void wifiConnect(void) {
+const unsigned int wifiConnectTimeout = 20;     /* num of 500ms intervals */
+const unsigned int serverConnectAttempts = 10;  /* max num of attempts */
+unsigned int srvConnCnt;
+
+bool wifiConnect(void) {
+  unsigned int cycles = 0;
+  
   Serial.println("Connecting to WiFi");
   WiFi.mode(WIFI_STA);
   WiFi.begin("WLAN-Bey-IoT", "IoT-Fra80");
   while (WiFi.status() != WL_CONNECTED) {
     delay(500);
     Serial.print(".");
+
+    cycles++;
+    if (cycles > wifiConnectTimeout) {
+      return false;
+    }
   }
   Serial.print(" ok, IP: ");
   Serial.println(WiFi.localIP());
+  return true;
 }
 
 void setup() {
   Serial.begin(115200);
   delay(100);
 
-  wifiConnect();
-
   pinMode(0, OUTPUT);
   pinMode(relaisPin, OUTPUT);
+  digitalWrite(relaisPin, HIGH);  /* failsafe */
+
+  while (!wifiConnect()) {
+    /* wait 5s and try again */
+    delay(5000);
+  }
+
+  srvConnCnt = 0;
 }
 
 void loop() {
+  if (srvConnCnt > serverConnectAttempts) {
+    digitalWrite(relaisPin, HIGH);  /* failsafe */
+  }
+  
   Serial.print("connecting to ");
   Serial.println(host);
 
-  // Use WiFiClient class to create TCP connections
   WiFiClient client;
-
   if (!client.connect(host, httpPort)) {
     Serial.println("ERROR connection failed");
+    srvConnCnt++;
     return;
   }
+  srvConnCnt = 0;
 
   // This will send the request to the server
   String httpRequest = "GET " + serviceUri + " HTTP/1.1\r\n" +
@@ -115,18 +144,20 @@ void loop() {
 
   // only deep sleep, if the time is more than 5 minutes
   if (lightTime >= 5 && lightState == false) {
-    Serial.println("sleeping with WiFi off");
-    Serial.println("");
+    Serial.print("sleeping with WiFi off: Minutes ");
+    Serial.println(lightTime);
     Serial.flush();
 
     WiFi.mode(WIFI_OFF);
     delay(lightTime * 60 * 1000);
     wifiConnect();
   } else {
-    Serial.println("taking a normal sleep");
-    if (lightTime <= 1) {
+    Serial.print("taking a normal sleep: Minutes ");
+    if (lightTime < 1) {
+      Serial.println("only 10 seconds");
       delay(10 * 1000);
     } else {
+      Serial.println(lightTime);
       delay(lightTime * 60 * 1000);
     }
   }