fix: add touch sensor connection check and update logic

README.de.md

@@ -82,7 +82,7 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 | PN532 SCL         | 22        |
 | TTP223 I/O        | 25        |
 
-**!! Achte darauf, dass am PN532 die DIP-Schalter auf I2C gestellt sind**
+**!! Achte darauf, dass am PN532 die DIP-Schalter auf I2C gestellt sind**  
 **Nutze den 3V Pin vom ESP für den Touch Sensor**
 
 ![Wiring](./img/Schaltplan.png)

README.md

@@ -86,7 +86,7 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 | PN532 SCL         | 22        |
 | TTP223 I/O        | 25        |
 
-**!! Make sure that the DIP switches on the PN532 are set to I2C**
+**!! Make sure that the DIP switches on the PN532 are set to I2C**  
 **Use the 3V pin from the ESP for the touch sensor**
 
 ![Wiring](./img/Schaltplan.png)

src/main.cpp

@@ -15,6 +15,7 @@
 
 bool mainTaskWasPaused = 0;
 uint8_t scaleTareCounter = 0;
+bool touchSensorConnected = false;
 
 // ##### SETUP #####
 void setup() {
@@ -59,6 +60,16 @@ void setup() {
 
   // Touch Sensor
   pinMode(TTP223_PIN, INPUT_PULLUP);
+  if (digitalRead(TTP223_PIN) == HIGH) 
+  {
+    Serial.println("Touch Sensor is not connected");
+    touchSensorConnected = false;
+  } 
+  else 
+  {
+    Serial.println("Touch Sensor is connected");
+    touchSensorConnected
+  }
 }
 
 
@@ -100,7 +111,7 @@ void loop() {
   unsigned long currentMillis = millis();
 
   // Überprüfe den Status des Touch Sensors
-  if (digitalRead(TTP223_PIN) == HIGH && currentMillis - lastButtonPress > debounceDelay) 
+  if (touchSensorConnected && digitalRead(TTP223_PIN) == HIGH && currentMillis - lastButtonPress > debounceDelay) 
   {
     lastButtonPress = currentMillis;
     scaleTareRequest = true;