Merge pull request #33 from andysheen/master

added updating the threshold of capacitive touch on on startup

ESP32-SOCKETIO.ino

@@ -129,15 +129,19 @@ class CapacitiveConfig: public ButtonConfig {
       _pin = pin;
       _threshold = threshold;
     }
-
+    void setThreshold(uint16_t CapThreshold) {
+      _threshold = CapThreshold;
+    }
   protected:
     int readButton(uint8_t /*pin*/) override {
       uint16_t val = touchRead(_pin);
       return (val < _threshold) ? LOW : HIGH;
     }
+
 };
 
-#define TOUCH_THRESHOLD 60
+int TOUCH_THRESHOLD = 60;
+int TOUCH_HYSTERESIS = 20;
 #define LONG_TOUCH 1500
 CapacitiveConfig touchConfig(CAPTOUCH, TOUCH_THRESHOLD);
 AceButton buttonTouch(&touchConfig);
@@ -167,9 +171,11 @@ int port = 80; // Socket.IO Port Address
 char path[] = "/socket.io/?transport=websocket"; // Socket.IO Base Path
 
 void setup() {
+
   setupPixels();
   Serial.begin(115200);
   setupPins();
+  setupCapacitiveTouch();
 
   //create 10 digit ID
   myID = generateID();

utility.ino

@@ -167,3 +167,16 @@ String generateID() {
   String out = String(low);
   return  out;
 }
+
+void setupCapacitiveTouch() {
+  int touchAverage = 0;
+  for (byte i = 0; i < 10; i++) {
+    touchAverage = touchAverage+touchRead(CAPTOUCH);
+    delay(100);
+  }
+  touchAverage = touchAverage/10;
+  TOUCH_THRESHOLD = touchAverage - TOUCH_HYSTERESIS;
+  Serial.print("Touch threshold is:");
+  Serial.println(TOUCH_THRESHOLD);
+  touchConfig.setThreshold(TOUCH_THRESHOLD);
+}