/** rm
  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


ESP32     display
  3v3         VCC
  GND         GND
  5           TFT_CS
  25          TFT_RESET
  2           TFT_DC
  23          MOSI
  18          SCK
  3v3         LED
  19          MISO

  ESP32         Encoder
  32            select button 1
  GND           select button 2
  27            encoder direction 1
  33            encoder direction 2
  GND           encoder dir ground

// For the Adafruit shield, these are the default.
#define TFT_RST 8
#define TFT_DC 9
#define TFT_CS 10
 
// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);
// If using the breakout, change pins as desired
//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_MOSI, TFT_CLK, TFT_RST, TFT_MISO);


Calling Wire.begin() will assume pins 2 and 14 are SDA and SCL, 
but you can manually set them to any other pin by calling Wire.begin([SDA], [SCL]).











 ****************************************************/

#include <TFT_eSPI.h>
#include <SPI.h>       // this is needed for display
#include <Wire.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 15
#define TFT_DC 2
#define TFT_MOSI 23
#define TFT_SCLK 18
//Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
TFT_eSPI tft = TFT_eSPI(); // Invoke custom library with default width and height

#define ILI9341_RED TFT_RED
#define ILI9341_YELLOW TFT_YELLOW
#define ILI9341_GREEN TFT_GREEN
#define ILI9341_CYAN TFT_CYAN
#define ILI9341_BLUE TFT_BLUE
#define ILI9341_MAGENTA TFT_MAGENTA


// Size of the color selection boxes and the paintbrush size
#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;


#define cy tft.height()/2
#define cx tft.width()/2




void setup(void) {
  Serial.begin(115200);
  Serial.println(F("Cap Touch Paint!"));
  
  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);
  
  // make the color selection boxes
  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
 
  // select the current color 'red'
  tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  currentcolor = ILI9341_RED;
}

void loop() {
  // Wait for a touch
  if (! ctp.touched()) {
    delay(10); // Speeds up the simulation
    return;
  }

  // Retrieve a point  
  TS_Point p = ctp.getPoint();
  
 
  // Print out raw data from screen touch controller
  Serial.print("X = "); Serial.print(p.x);
  Serial.print("\tY = "); Serial.print(p.y);
  Serial.print(" -> ");
 

  // flip it around to match the screen.
  p.x = map(p.x, 0, 240, 240, 0);
  p.y = map(p.y, 0, 320, 320, 0);

  // Print out the remapped (rotated) coordinates
  Serial.print("("); Serial.print(p.x);
  Serial.print(", "); Serial.print(p.y);
  Serial.println(")");
  
HOME(); 

/*
  if (p.y < BOXSIZE) {
     oldcolor = currentcolor;

     if (p.x < BOXSIZE) { 
       currentcolor = ILI9341_RED; 
       tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*2) {
       currentcolor = ILI9341_YELLOW;
       tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     }

     if (oldcolor != currentcolor) {
        if (oldcolor == ILI9341_RED) 
          tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);

     }
  }
  if (((p.y-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
    tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
  }
*/
}


void HOME(){

  int16_t cxb = tft.width()/2 + 10;  //offset x 
  int16_t cyb = tft.height()/2; // offset y
  tft.setCursor(cxb - 48,10);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(3);
  tft.println("HOME"); //18 x 96?

  tft.fillRect(10,(cyb+8),128,25,ILI9341_YELLOW); 
  tft.setCursor(24,(cyb+10));
  tft.setTextColor(ILI9341_BLACK);
  //@param  s  Desired text size. 1 is default 6x8, 2 is 12x16, 3 is 18x24, etc
  tft.setTextSize(2);
  tft.println("1.Display");

  tft.fillRect(10,(cyb+38),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cyb+40));
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println("2.Menu");

  tft.fillRect(10,(cyb+68),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cyb+70));
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println("3.Info");

  //SELECTION BOXES
  tft.drawRect(10,(cyb+8),128,25,ILI9341_WHITE); 
  tft.drawRect(10,(cyb+38),128,25,ILI9341_WHITE); 
  tft.drawRect(10,(cyb+68),128,25,ILI9341_WHITE); 
}

void DISP(){
  
  tft.setCursor(10,10);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(3);
  tft.println("Live Display");

  tft.setCursor(10,(cy-100));
  tft.setTextColor(ILI9341_BLUE);
  tft.setTextSize(6);
  tft.println("273.5k");

  tft.fillRect(10,(cy+8),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cy+10));
  tft.setTextColor(ILI9341_BLACK);
  //@param  s  Desired text size. 1 is default 6x8, 2 is 12x16, 3 is 18x24, etc
  tft.setTextSize(3);
  tft.println("1.TEMP");

  tft.fillRect(10,(cy+38),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cy+40));
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println("2.VOLT");
  
}

void MENU(){

  int16_t cxb = tft.width()/2 + 10;  //offset x 
  int16_t cyb = tft.height()/2; // offset y
  tft.fillRect(10,(cyb+8),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cyb+10));
  tft.setTextColor(ILI9341_BLACK);
  //@param  s  Desired text size. 1 is default 6x8, 2 is 12x16, 3 is 18x24, etc
  tft.setTextSize(2);
  tft.println("1.CH1");

  tft.fillRect(10,(cyb+38),128,25,ILI9341_YELLOW); 
  tft.setCursor(20,(cyb+40));
  tft.setTextColor(ILI9341_BLACK);
  tft.setTextSize(3);
  tft.println("2.CH2");
}
void BUTTONS(){

  int16_t cxb = tft.width()/2 + 10;  //offset x 
  int16_t cyb = tft.height()/2; // offset y
  tft.fillRoundRect((cxb+50),(cyb+40),30,30,5,ILI9341_GREEN);
  //height = 23
  tft.fillTriangle((cxb+50),(cyb+38),(cxb+80),(cyb+38),(cxb+65),(cyb+15),ILI9341_GREEN);//top
  tft.fillTriangle((cxb+50),(cyb+72),(cxb+80),(cyb+72),(cxb+65),(cyb+95),ILI9341_GREEN);//bot
  tft.fillTriangle((cxb+48),(cyb+40),(cxb+25),(cyb+55),(cxb+48),(cyb+70),ILI9341_GREEN);//left
  tft.fillTriangle((cxb+82),(cyb+40),(cxb+105),(cyb+55),(cxb+82),(cyb+70),ILI9341_GREEN);//right
}