firmware wip - fine tune soilmoisture values, add esp32-cam support

Arduino/CanGrow/CanGrow.ino

@@ -75,7 +75,7 @@ void setup() {
   digitalWrite(PinPUMP, LOW);
   // except PINsoilmoisture
   // PINsoilmoisture is always HIGH and gets LOW in moment of waterlevel measurement
-  digitalWrite(PINsoilmoisture, HIGH);
+  digitalWrite(PINsoilmoisture, LOW);
   
   // set PWM frequency lower to avoid annoying noises
   // in combination with 47uF at fan output, 220Hz is kinda sweetspot for a fan

Arduino/CanGrow/CanGrow_HTML.h

@@ -34,6 +34,12 @@ body {
   margin: auto;    
 } 
 
+.centered {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
 h1, h2, h3, h4, h5 {
   text-align: center;
 }

Arduino/CanGrow/CanGrow_Init.h

@@ -92,7 +92,8 @@ bool UseLEDrelais;
 bool UseFANrelais;
 // Which temperature sensor to use?
 byte TemperatureSensor_Type;
-unsigned short MaintenanceDuration = 60;
+unsigned short MaintenanceDuration = 300;
+char Esp32CamIP[16];
 
 //
 // Grow Stuff

Arduino/CanGrow/CanGrow_Sensors.h

@@ -147,14 +147,14 @@ int getSoilmoisture(byte moistureSensor, bool returnRAW = false) {
       // read analog value from analog moisture sensor
       wet = 180;
       // this value was measured in air, without contact to anything
-      // dry= 590; 
+      //dry= 590; 
       
       // was measured in dry soil, not bone dry but really dry (6 days no watering)
-      dry = 300;
+      dry = 360;
       
-      //digitalWrite(PINsoilmoisture, HIGH);
+      digitalWrite(PINsoilmoisture, HIGH);
       // wait a bit to let the circuit stabilize
-      //delay(50);
+      delay(50);
       
       // get analog input value
       // get values 10 times and get the middle for more precise data
@@ -164,11 +164,15 @@ int getSoilmoisture(byte moistureSensor, bool returnRAW = false) {
       soilmoisture = soilmoisture / 10;
       
       // disable Vcc for the sensor to release analog pin
-      //digitalWrite(PINsoilmoisture, LOW);
+      digitalWrite(PINsoilmoisture, LOW);
       break;
     case 2:
       // read soil moisture from chrip I2C
-      wet = 560;
+      // this value was measured in water
+      // wet = 560;
+      
+      // measured in fresh watered soil
+      wet = 390;
       dry= 250;
       
       // get raw value from I2C chirp sensor

Arduino/CanGrow/CanGrow_SysFunctions.h

@@ -102,8 +102,9 @@ bool loadEEPROM() {
    * 216 PinFANPWM
    * 217 SunFade
    * 218 SunFadeDuration 
-   * 219 MaintenanceDuration
+   * 219 MaintenanceDuration (2 byte)
-   * 221 .. 
+   * 221 Esp32CamIP (16 byte) 
+   * 237 ...
    * 
    */
    
@@ -165,6 +166,8 @@ bool loadEEPROM() {
       EEPROM.get(215, UseFANrelais);
       // size is 2 byte
       EEPROM.get(219, MaintenanceDuration);
+      // size is 16 byte
+      EEPROM.get(221, Esp32CamIP);
     }
     // TODO auth does not work atm 
     // EEPROM.get(160, WebUiUsername);

Arduino/CanGrow/CanGrow_WebFunctions.h

@@ -324,7 +324,16 @@ void WEBroot() {
     body += valSoilmoisture;
     body += "'); ";
     
-    body += "</script>";
+    body += "</script><br>\n";
+    
+    // when an ESP32-Cam IP is given, display picture from it
+    if(strlen(Esp32CamIP) > 0) {
+      body += "<img class='centered' src='http://";
+      body += Esp32CamIP;
+      body += "/capture' alt='Image capture from ESP32CAM at ";
+      body += Esp32CamIP;
+      body += "'>\n<br>\n";
+    }
     
     body += "Grow started: ";
     body += returnStrDateFromEpoch(GrowStart);
@@ -576,6 +585,12 @@ void WEBsystemSettings() {
     body += MaintenanceDuration;
     body += "' required> Seconds<br>\n";
     
+    
+    body += "ESP32-Cam IP (optional): <input type='text' name='Esp32CamIP' maxlength='16' value='";
+    body += Esp32CamIP;
+    body += "' ><br>\n";
+    
+    
     body += "<input type='submit' value='Save'>\n";
     body += "</form>\n";  
     
@@ -764,6 +779,9 @@ void POSTsystemSettings() {
   UseFANrelais = webserver.arg("UseFANrelais").toInt();
   TemperatureSensor_Type = webserver.arg("TemperatureSensor_Type").toInt();
   MaintenanceDuration = webserver.arg("MaintenanceDuration").toInt();
+  String Esp32CamIP_tmp = webserver.arg("Esp32CamIP");
+  Esp32CamIP_tmp.toCharArray(Esp32CamIP, 221);
+  
   
   configured = true;
   
@@ -788,6 +806,7 @@ void POSTsystemSettings() {
   // size is 1 byte
   EEPROM.put(215, UseFANrelais);
   EEPROM.put(219, MaintenanceDuration);
+  EEPROM.put(221, Esp32CamIP);
   
   // write data to EEPROM
   EEPROM.commit();

playground/html/root/index.html

@@ -19,6 +19,12 @@ body {
   margin: auto;    
 } 
 
+.centered {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
 h1, h2, h3, h4, h5 {
   text-align: center;
 }
@@ -106,7 +112,7 @@ a:active {
   background: #026b45;
   color: #fff;
   border-radius: 3px;
-  padding: 8px 16px;
+  padding: 6px 12px;
   text-align: center;
   text-decoration: none;
   display: inline-block;
@@ -138,7 +144,7 @@ input[type=text], input[type=date], input[type=number], input[type=password], se
 <li><a href='/systemSettings' >&#9881; System settings</a></li>
 <li><a href='/wifiSettings' >&#128225; WiFi settings</a></li>
 <li><a href='/help' >&#x2753; Help</a></li>
-<li><span class='MenuTime'>23:39:48</span></li>
+<li><span class='MenuTime'>01:53:31</span></li>
 <li><a href='https://git.la10cy.net/DeltaLima/CanGrow' target='_blank'>CanGrow v0.1</a></li>
 </ul><div class='center'><h2>&#x1F331; Ruderalis Indica</h2>
 
@@ -198,10 +204,13 @@ input[type=text], input[type=date], input[type=number], input[type=password], se
   var gaugeSoilmoisture = new Gauge(document.getElementById('gaugeSoilmoisture'));
 </script>
 
-<script>gaugeTemperature.value('21.10', 42, ' °C'); gaugeHumidity.value('59.00'); gaugeSoilmoisture.value('94'); </script>Grow started: 2024-04-12<br>
+<script>gaugeTemperature.value('21.27', 42, ' °C'); gaugeHumidity.value('61.83'); gaugeSoilmoisture.value('98'); </script><br>
-Day of Grow: 33<br>
+<img class='centered' src='http://192.168.30.6/capture' alt='Image capture from ESP32CAM at 192.168.30.6'>
+<br>
+Grow started: 2024-04-12<br>
+Day of Grow: 41<br>
 Pump water level: <span style='color: red;'>Critical</span><br>
-Growlight brightness: 69 %<br>
+Growlight brightness: 100 %<br>
 <form method='post' action='/switch'>
 MOSFET<select id='output' name='output' >
 <option disabled value='' selected hidden>---</option>