ESP32 capacitive touch+ python

reader.py

# this code will read the touch values from the ESP32 and echo them on the command line
# you could do something else more interesting with these values (e.g. visualize/sonify)

# pip install pyserial 
import serial

# change the port as necessary by your OS
ser = serial.Serial('/dev/ttyS8', 115200)

while(True):
  print(str(ser.readline().strip(), 'ascii'))

touchInterruptRead.ino

/*
This is an example how to use Touch Intrrerupts and read touch values
just touch the pins themselves to get different values
*/

int threshold = 40;
bool touch1detected = false;
bool touch2detected = false;
uint8_t touch1Val = 0;
uint8_t touch2Val = 0;

void gotTouch1(){
 touch1detected = true;
 touch1Val = touchRead(T2);
}

void gotTouch2(){
 touch2detected = true;
 touch2Val = touchRead(T9);
}

void setup() {
  Serial.begin(115200);
  delay(1000); // give me time to bring up serial monitor
  Serial.println("ESP32 Touch Interrupt Test");
  touchAttachInterrupt(T2, gotTouch1, threshold);
  touchAttachInterrupt(T9, gotTouch2, threshold);
}

void loop(){
  if(touch1detected){
    touch1detected = false;
    Serial.println(touch1Val);
  }
  if(touch2detected){
    touch2detected = false;
    Serial.println(touch2Val);
  }
}

pinout image for location of touch sensors on TTGO T-Display from https://raw.githubusercontent.com/Xinyuan-LilyGO/TTGO-T-Display/master/image/pinmap.jpg

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