firmware wip - add display stuff

Arduino/CanGrow/CanGrow.ino

@@ -66,8 +66,11 @@ byte valWaterlevel;
 // do we need a restart? (e.g. after wifi settings change)
 bool NeedRestart;
 bool FirstRun;
-
+// which screen should be actually displayed
-
+byte ScreenToDisplay = 0;
+byte DisplayScreenDuration = 3;
+// how many seconds actual screen got displayed
+byte ScreenIterationPassed = 0;
 /*
  * 
  * EEPROM saved variables
@@ -599,7 +602,10 @@ void wipeEEPROM() {
       Serial.println("Please release PinWIPE to erase all data saved in EEPROM");
       Serial.println("LAST CHANCE TO KEEP THE DATA BY RESETTING NOW!!");
       
-      display.setCursor(0,36);
+      display.clearDisplay();
+      display.setCursor(0,0);
+      display.println("!!!!!!!!!!!!!!!!!!!!!");
+      display.println("");
       display.println("RELEASE PinWIPE");
       display.println("TO WIPE EEPROM");
       display.display();
@@ -612,7 +618,6 @@ void wipeEEPROM() {
   
   // write a 0 to all 512 bytes of the EEPROM
   Serial.print("wiping EEPROM... ");
-  display.setCursor(0,36);
   display.println("Wiping EEPROM...");
   display.println("Will restart in 3s");
   display.display();
@@ -1030,7 +1035,89 @@ void refreshSensors() {
   valWaterlevel = getWaterlevel();
 }
 
+void displayScreens() {
+  /*
+   * which screen to display
+   * interate through different screens
+   * 
+   */
+  if(ScreenIterationPassed > DisplayScreenDuration){
+    ScreenIterationPassed = 0;
+    // helper variable, maybe i find a better way in future
+    byte LastScreen = 2;
+    // when the next screen gets displayed, clear display
+    display.clearDisplay();
+    display.display();
+    // when ScreenToDisplay has reach last number of screens, reset to first (0)
+    if(ScreenToDisplay >= LastScreen) {
+      ScreenToDisplay = 0;
+    } else {
+      ScreenToDisplay++;
+    }
+  }
    
+  display.setCursor(0,0);
+  // in this switch case the single screens gets defined
+  switch(ScreenToDisplay) {
+    case 0:
+      display.print("Humidity: ");
+      display.print(valHumidity);
+      display.println(" %");
+      display.print("Temperature: ");
+      display.print(valTemperature);
+      display.println(" C");
+      display.print("Moisture: ");
+      display.print(valSoilmoisture);
+      display.println(" %");
+      if(UsePump == true) {
+        display.print("Pump Waterlvl: ");
+        switch(valWaterlevel) {
+          case 0:
+            display.println("OK");
+            break;
+          case 1: 
+            display.println("Warn");
+            break;
+          case 2:
+            display.println("Crit");
+            break;
+        }
+      }
+      break;
+    case 1:
+      display.print("LED: ");
+      display.print(PinLEDPWM * 100 / 255);
+      display.println(" %");
+      display.print("State: ");
+      display.println(digitalRead(PinLED));
+      display.println("");
+      display.print("FAN: ");
+      display.print(PinFANPWM * 100 / 255);
+      display.println(" %");
+      display.print("State: ");
+      display.println(digitalRead(PinFAN));
+      display.println("");
+      display.print("Pump state: ");
+      display.println(digitalRead(PinPUMP));
+      break;
+    case 2:
+      // display Logo
+      display.drawBitmap(0, 0, bmpCanGrow_Logo, 128, 32, WHITE);
+      display.display();
+      display.setCursor(0,32);
+      display.println(GrowName);
+      display.print("DoG: ");
+      display.print(DayOfGrow);
+      display.print(", ");
+      display.println(timeClient.getFormattedTime());
+      display.print("IP: ");
+      display.println(WiFi.localIP());
+      break;
+  }
+  ScreenIterationPassed++;
+  display.display();
+  
+}
 
 
 /*
@@ -1154,6 +1241,9 @@ void setup() {
   webserver.begin();
   
   Serial.println(".:: CanGrow Ready ::.");
+  delay(1000);
+  display.clearDisplay();
+  display.display();
 }
 
 
@@ -1186,7 +1276,7 @@ void loop() {
     
     // set the actual state of the Grow LED
     controlLED();
-    
+    displayScreens();
     
     // current time gets previous time for new interval
     outputPrevTime = currentRuntime;