Olá...

Adquiri recentemente esse lcd 5" SSD1936 com tft shield p/ arduino mega.....

estou tentando ver fotos do sd card no lcd......mas nada de conseguir, estou usando a biblioteca UTFT

// UTFT_Demo_800x480 (C)2012 Henning Karlsen
// web: http://www.henningkarlsen.com/electronics
//
// This program is a demo of how to use most of the functions
// of the library with a supported display modules.
//
// This demo was made for modules with a screen resolution
// of 800x480 pixels.
//
// This program requires the UTFT library.
//

#include <UTFT.h>

// Declare which fonts we will be using
extern uint8_t SmallFont[];

// Uncomment the next line for Arduino 2009/Uno
//UTFT myGLCD(ITDB43,19,18,17,16);   // Remember to change the model parameter to suit your display module!

// Uncomment the next line for Arduino Mega
UTFT myGLCD(CTE50,38,39,40,41);   // Remember to change the model parameter to suit your display module!

void setup()
{
  randomSeed(analogRead(0));
 
// Setup the LCD
  myGLCD.InitLCD();
  myGLCD.setFont(SmallFont);
}

void loop()
{
  int buf[798];
  int x, x2;
  int y, y2;
  int r;

// Clear the screen and draw the frame
  myGLCD.clrScr();

  myGLCD.setColor(255, 0, 0);
  myGLCD.fillRect(0, 0, 799, 13);
  myGLCD.setColor(64, 64, 64);
  myGLCD.fillRect(0, 466, 799, 479);
  myGLCD.setColor(255, 255, 255);
  myGLCD.setBackColor(255, 0, 0);
  myGLCD.print("* Universal Color TFT Display Library *", CENTER, 1);
  myGLCD.setBackColor(64, 64, 64);
  myGLCD.setColor(255,255,0);
  myGLCD.print("a href="http://electronics.henningkarlsen.com>">http://electronics.henningkarlsen.com>;", CENTER, 467);

  myGLCD.setColor(0, 0, 255);
  myGLCD.drawRect(0, 14, 799, 465);

// Draw crosshairs
  myGLCD.setColor(0, 0, 255);
  myGLCD.setBackColor(0, 0, 0);
  myGLCD.drawLine(399, 15, 399, 464);
  myGLCD.drawLine(1, 239, 798, 239);
  for (int i=9; i<790; i+=10)
    myGLCD.drawLine(i, 237, i, 242);
  for (int i=19; i<470; i+=10)
    myGLCD.drawLine(397, i, 402, i);

// Draw sin-, cos- and tan-lines 
  myGLCD.setColor(0,255,255);
  myGLCD.print("Sin", 5, 15);
  for (int i=1; i<798; i++)
  {
    myGLCD.drawPixel(i,239+(sin(((i*1.13)*3.14)/180)*200));
  }
 
  myGLCD.setColor(255,0,0);
  myGLCD.print("Cos", 5, 27);
  for (int i=1; i<798; i++)
  {
    myGLCD.drawPixel(i,239+(cos(((i*1.13)*3.14)/180)*200));
  }

  myGLCD.setColor(255,255,0);
  myGLCD.print("Tan", 5, 39);
  for (int i=1; i<798; i++)
  {
    myGLCD.drawPixel(i,239+(tan(((i*0.9)*3.14)/180)));
  }

  delay(2000);

  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);
  myGLCD.setColor(0, 0, 255);
  myGLCD.setBackColor(0, 0, 0);
  myGLCD.drawLine(399, 15, 399, 464);
  myGLCD.drawLine(1, 239, 798, 239);

// Draw a moving sinewave
  x=1;
  for (int i=1; i<(798*20); i++)
  {
    x++;
    if (x==799)
      x=1;
    if (i>799)
    {
      if ((x==399)||(buf[x-1]==239))
        myGLCD.setColor(0,0,255);
      else
        myGLCD.setColor(0,0,0);
      myGLCD.drawPixel(x,buf[x-1]);
    }
    myGLCD.setColor(0,255,255);
    y=239+(sin(((i*1.65)*3.14)/180)*(200-(i / 100)));
    myGLCD.drawPixel(x,y);
    buf[x-1]=y;
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random filled rectangles
  for (int i=0; i<50; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=2+random(746);
    y=16+random(397);
    x2=x+50;
    y2=y+50;
    myGLCD.fillRect(x, y, x2, y2);
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random filled, rounded rectangles
  for (int i=0; i<50; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=2+random(746);
    y=16+random(397);
    x2=x+50;
    y2=y+50;
    myGLCD.fillRoundRect(x, y, x2, y2);
  }
 
  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random filled circles
  for (int i=0; i<50; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=27+random(746);
    y=41+random(397);
    myGLCD.fillCircle(x, y, 25);
  }
 
  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some lines in a pattern
  myGLCD.setColor (255,0,0);
  for (int i=15; i<463; i+=5)
  {
    myGLCD.drawLine(1, i, (i*1.66)-10, 463);
  }
  myGLCD.setColor (255,0,0);
  for (int i=463; i>15; i-=5)
  {
    myGLCD.drawLine(798, i, (i*1.66)+30, 15);
  }
  myGLCD.setColor (0,255,255);
  for (int i=463; i>15; i-=5)
  {
    myGLCD.drawLine(1, i, 770-(i*1.66), 15);
  }
  myGLCD.setColor (0,255,255);
  for (int i=15; i<463; i+=5)
  {
    myGLCD.drawLine(798, i, 810-(i*1.66), 463);
  }
 
  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random circles
  for (int i=0; i<250; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=32+random(736);
    y=45+random(386);
    r=random(30);
    myGLCD.drawCircle(x, y, r);
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random rectangles
  for (int i=0; i<250; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=2+random(796);
    y=16+random(447);
    x2=2+random(796);
    y2=16+random(447);
    myGLCD.drawRect(x, y, x2, y2);
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

// Draw some random rounded rectangles
  for (int i=0; i<250; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=2+random(796);
    y=16+random(447);
    x2=2+random(796);
    y2=16+random(447);
    myGLCD.drawRoundRect(x, y, x2, y2);
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

  for (int i=0; i<250; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    x=2+random(796);
    y=16+random(447);
    x2=2+random(796);
    y2=16+random(447);
    myGLCD.drawLine(x, y, x2, y2);
  }

  delay(2000);
 
  myGLCD.setColor(0,0,0);
  myGLCD.fillRect(1,15,798,464);

  for (int i=0; i<10000; i++)
  {
    myGLCD.setColor(random(255), random(255), random(255));
    myGLCD.drawPixel(2+random(796), 16+random(447));
  }

  delay(2000);

  myGLCD.fillScr(0, 0, 255);
  myGLCD.setColor(255, 0, 0);
  myGLCD.fillRoundRect(320, 190, 479, 289);
 
  myGLCD.setColor(255, 255, 255);
  myGLCD.setBackColor(255, 0, 0);
  myGLCD.print("That's it!", CENTER, 213);
  myGLCD.print("Restarting in a", CENTER, 239);
  myGLCD.print("few seconds...", CENTER, 252);
 
  myGLCD.setColor(0, 255, 0);
  myGLCD.setBackColor(0, 0, 255);
  myGLCD.print("Runtime: (msecs)", CENTER, 450);
  myGLCD.printNumI(millis(), CENTER, 465);
 
  delay (10000);
}

-----------------------------------------------------------------

// Arduino SD image viewer
// Written by Stanley Huang <stanleyhuangyc@gmail.com>
//
// This program requires the UTFT library.
//

#include <UTFT.h>
#include <SD.h>


// Declare which fonts we will be using
extern uint8_t SmallFont[];
extern uint8_t BigFont[];

// for Arduino 2009/Uno
//UTFT myGLCD(ITDB28,19,18,17,16);   // Remember to change the model parameter to suit your display module!

// for Arduino Mega
UTFT myGLCD(CTE50,38,39,40,41);   // Remember to change the model parameter to suit your display module!

//#define SD_PIN 4

File root;

#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 480

void ShowMessage(const char* msg1, const char* msg2 = 0)
{
    myGLCD.setColor(255, 0, 0);
    myGLCD.fillRoundRect(50, 190, 270, 230);
    myGLCD.setColor(255, 255, 255);
    myGLCD.setBackColor(255, 0, 0);
    myGLCD.print(msg1, CENTER, 196);
    if (msg2) myGLCD.print(msg2, CENTER, 210);
}

void LoadImage(File& file)
{
    for (int y = 0; y < SCREEN_HEIGHT && file.available(); y++) {
        uint16_t buf[SCREEN_WIDTH];
        for (int x = SCREEN_WIDTH - 1; x >= 0; x--) {
            byte l = file.read();
            byte h = file.read();
            buf[x] = ((uint16_t)h 8) | l;
        }
        myGLCD.drawPixelLine(0, y, SCREEN_WIDTH, buf);
    }
}

void WalkDirectory(File dir)
{
    for (;;) {
        File entry =  dir.openNextFile();
        if (! entry) {
            // no more files
            break;
        }
        if (entry.isDirectory()) {
            WalkDirectory(entry);
        } else {
            ShowMessage("Loading image from SD card", entry.name());
            LoadImage(entry);
        }
        entry.close();
        // delay for a while between each image
        delay(2000);
    }
}

void setup()
{
    // Setup the LCD
    myGLCD.InitLCD();
    myGLCD.setFont(SmallFont);
    myGLCD.fillScr(0, 0, 255);

    if (!SD.begin()) {
        ShowMessage("SD not ready");
        return;
    }

    delay(1000);
    root = SD.open("/PICTURE");
    WalkDirectory(root);

    ShowMessage("That's the end of the show", "Press RESET to start over");
}

void loop()
{
}

Se alguém puder dar uma idéia....vlw