#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define TFT_DC 9
#define TFT_CS 10
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

void setup() {
  tft.begin();

  tft.setRotation(0);
  tft.invertDisplay(0);
/*
  tft.drawPixel( 5,150,  ILI9341_RED );
  for (int i=0; i<255; i++) {
    tft.drawLine( 0, 5+i, 50, 5+i,  tft.color565( i, 0 , 0)   );
    tft.drawLine( 51, 5+i, 100, 5+i,  tft.color565( 0, i , 0)   );
    tft.drawLine( 101, 5+i, 150, 5+i,  tft.color565( 0, 0 , i)   );
    tft.drawLine( 151, 5+i, 200, 5+i,  tft.color565( i, i , i)   );
  }
  
  tft.drawRect(20,20, 100, 40, ILI9341_WHITE );
  tft.drawCircle(100, 100, 50, ILI9341_YELLOW ); // x,y, radius
*/

  int x0=0, y0=30;
  for( int x=0; x<240; x++ ){
    int y = sin(4*x*PI/180)*30+30    +   sin(24*x*PI/180)*5+10;
    //tft.drawPixel( x, y,  ILI9341_WHITE );
    tft.drawLine(x0, y0, x, y, ILI9341_WHITE);
    x0 = x;
    y0 = y;
  }

/*
  tft.fillRoundRect(0,50, 200,100, 20, ILI9341_RED);

  tft.setTextSize(3);
  tft.setTextColor( tft.color565( 100, 200, 255 ) );
  tft.println("Text");
*/

/*
  tft.setCursor(26, 120);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(3);
  tft.println("Hello, TFT!");

  tft.setCursor(20, 160);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("I can has colors?");

  tft.setScrollMargins( 50, 200 );
  for ( int y=0; y<50; y=y+10) {
    tft.scrollTo( y );
    delay(200);
  }
   
  tft.fillScreen( ILI9341_BLACK );
*/

}

void loop() {
  // put your main code here, to run repeatedly:
}