/**
  ESP32s3 adaptation by Tyeth Gundry of Arduino version of
  First demo for FT6206 Capactive Touch Screen on Wokwi. Enjoy!

  https://wokwi.com/arduino/projects/311598148845830720
 */

/***************************************************
  This is our touchscreen painting example for the Adafruit ILI9341
  captouch shield
  ----> http://www.adafruit.com/products/1947

  Check out the links above for our tutorials and wiring diagrams

  Adafruit invests time and resources providing this open source code,
  please support Adafruit and open-source hardware by purchasing
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.
  MIT license, all text above must be included in any redistribution
 ****************************************************/


#include <Adafruit_GFX.h>    // Core graphics library
#include <SPI.h>       // this is needed for display
#include <Adafruit_ILI9341.h>
#include <Arduino.h>      // this is needed for FT6206
#include <Adafruit_FT6206.h>

// The FT6206 uses hardware I2C (SCL/SDA)
Adafruit_FT6206 ctp = Adafruit_FT6206();

// // The display also uses hardware SPI, plus #9 & #10
// #define TFT_CS 10
// #define TFT_DC 9
#define TFT_DC 2
#define TFT_CS 15
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

#define BUTTON_A 16
#define BUTTON_B 17
#define BUTTON_C 18

TS_Point p_current;
TS_Point p_prev;

void setup() {
  //while (!Serial);     // used for leonardo debugging

  Serial.begin(115200);
  Serial.println(F("Cap Touch Paint!"));
  
  Wire.setPins(10, 8); // redefine first I2C port to be on pins 10/8
  tft.begin();

  if (! ctp.begin(40)) {  // pass in 'sensitivity' coefficient
    Serial.println("Couldn't start FT6206 touchscreen controller");
    while (1);
  }

  Serial.println("Capacitive touchscreen started");
  
  tft.fillScreen(ILI9341_BLACK);

  tft.setRotation(2);

  pinMode(BUTTON_A, INPUT_PULLUP);
  pinMode(BUTTON_B, INPUT_PULLUP);
  pinMode(BUTTON_C, INPUT_PULLUP);
  
}

void loop() {
  
  // Wait for a touch
  if (ctp.touched()) {

    p_current = ctp.getPoint();
    if (p_current!=p_prev){
      Serial.printf("x:%d, y:%d \r\n", p_current.x, p_current.y);
      tft.drawPixel(p_current.x, p_current.y, ILI9341_WHITE);
    }
    p_prev = p_current;
  }

  if (!digitalRead(BUTTON_A)){
    Serial.printf("Button A pressed");
  }
  if (!digitalRead(BUTTON_B)){
    Serial.printf("Button B pressed");
  }
  if (!digitalRead(BUTTON_C)){
    Serial.printf("Button C pressed");
  }

  delay(10);
}