Add touch as a component for eink displays about cale-idf

[martinberlin]

[martinberlin]

Pseudo-code from me-no-dev to work with ISR interrupts

static void waitingThread(void* arg){
  for(;;){
    semaphoreTake(isr_sem, forever);
    //do your Wire stuff
  }
}

static void isr(){
  bool shouldYield = false;
  semaphoreGiveFromISR(isr_sem, &shouldYield);
  yieldFromISR(shouldYield);
}

Pointer 2:
Check how to draw buttons using Adafruit GFX that is already installed
https://learn.adafruit.com/arduin-o-phone-arduino-powered-diy-cellphone/arduin-o-phone-sketch

[martinberlin]

I2C Reference of FocalTech commands

[martinberlin]

Images for https://github.com/martinberlin/cale-idf/wiki/Model-gdew027w3T.h-(Touch)

[martinberlin]

Touch is integrated and working to detect simple tapping. Ready to be used in UX for ESP32

[martinberlin]

At the moment I'm refactoring this library since I'm not happy with the current version and will like to recognize the gestures of the original library and if possible add new ones based on the double X, Y, Event signals and recognize also Zoom IN and Zoom OUT events.

[martinberlin]

Done. It works well to detect tapping and that’s enough to design UX on epaper