/***************************************************
  This is our GFX example for the Adafruit ILI9341 Breakout and Shield
  ----> http://www.adafruit.com/products/1651

  Check out the links above for our tutorials and wiring diagrams
  These displays use SPI to communicate, 4 or 5 pins are required to
  interface (RST is optional)
  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 "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"
#include "SD.h"

// For the Adafruit shield, these are the default.
#define TFT_DC 25
#define TFT_RST 27
#define TFT_CS 17

#define SD_CSPIN 16
#define SD_MAXSPEED 50000000

SPIClass spi = SPIClass();

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
Adafruit_ILI9341 tft = Adafruit_ILI9341(&spi, TFT_DC, TFT_CS, TFT_RST);
Adafruit_ILI9341 tft2 = Adafruit_ILI9341(&spi, TFT_DC, 15, 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);

unsigned long testFillScreen(Adafruit_ILI9341 &tft)
{
  unsigned long start = micros();
  tft.fillScreen(ILI9341_BLACK);
  yield();
  tft.fillScreen(ILI9341_RED);
  yield();
  tft.fillScreen(ILI9341_GREEN);
  yield();
  tft.fillScreen(ILI9341_BLUE);
  yield();
  tft.fillScreen(ILI9341_BLACK);
  yield();
  return micros() - start;
}

void printDirectory(File dir, int numTabs) {
  while (true) {

    File entry =  dir.openNextFile();
    if (! entry) {
      // no more files
      break;
    }
    for (uint8_t i = 0; i < numTabs; i++) {
      Serial.print('\t');
    }
    Serial.print(entry.name());
    if (entry.isDirectory()) {
      Serial.println("/");
      printDirectory(entry, numTabs + 1);
    } else {
      // files have sizes, directories do not
      Serial.print("\t\t");
      Serial.println(entry.size(), DEC);
    }
    entry.close();
  }
}

void setup()
{
  Serial.begin(9600);
  Serial.println("ILI9341 Test!");

  if(!SD.begin(SD_CSPIN, spi)){
    Serial.println("Card Failed");
    while(1);
  }

  Serial.println("Files in the card:");
  File root = SD.open("/");
  printDirectory(root, 0);
  Serial.println("");

  tft.begin();
  tft2.begin();

  Serial.print(F("Screen fill 1             "));
  Serial.println(testFillScreen(tft));
  delay(500);
  Serial.print(F("Screen fill 2             "));
  Serial.println(testFillScreen(tft2));
  delay(500);

  Serial.println(F("Done!"));
}

void loop(void)
{

}