I bought a shield on ebay that has the text "aitendo UL024TF ILI9325"
It has a 2.4 TFTLCD , a touch screen and a SD reader with the following pins
Pins on the shield Pin Arduino UNO
LCD_RST A4
LCD_CS A3
LCD_RS A2
LCD_WR A1
LCD_RD A0
LCD_D2 D2
LCD_D3 D3
LCD_D4 D4
LCD_D5 D5
LCD_D6 D6
LCD_D7 D7
LCD_D0 D8
LCD_D1 D9
SD_SS D10
SD_DI D11
SD_DO D12
SD_SCK D13
Tested library TouchScreen from ladyada (AdaFruit) Touch-Screen-Library-master.zip
using example touchscreendemoshield
Pin used follow...
// These are the pins for the shield!
#define YP A1 // must be an analog pin, use "An" notation!
#define XM A2 // must be an analog pin, use "An" notation!
#define YM 7 // can be a digital pin
#define XP 6 // can be a digital pin
Tested library SD from ladyada AdaFruit GitHub - adafruit/SD: fixes & updates to the Arduino SD library - totally in progress. works but in beta
using example SD_listfiles with CS set to 10
Pin used follow...
- SD card attached to SPI bus as follows:
** MOSI - pin 11
** MISO - pin 12
** CLK - pin 13
** CS - pin 10
For TFTLCD , used Adafruit TFTLCD-Library-master.zip from
and Adafruit-GFX-Library-master.zip from
VERY IMPORTANT: THE PINOUT FOLLOWS THE adafruit 2.8" TFT Breakout Board Pinout
Therefore, before compiling, please go to Adafruit_TFTLCD.h in the libraries directory
and be sure to have commented the line that follows
// **** IF USING THE LCD BREAKOUT BOARD, COMMENT OUT THIS NEXT LINE. ****
// **** IF USING THE LCD SHIELD, LEAVE THE LINE ENABLED: ****
//#define USE_ADAFRUIT_SHIELD_PINOUT 1
To test the shield please use the graphicstest example with some modifications,
considering that the chip in the aitendo shield has TWO VERY IMPORTANT
ISSUES:
1 - Answers 0 HEX to the request to identify the chip.
uint16_t identifier = tft.readID();
2 - The chip is a 9341
Therefore, you have to change the first 85 lines , those preceding
tft.begin(identifier);
to what follows:
// IMPORTANT: Adafruit_TFTLCD LIBRARY MUST BE SPECIFICALLY
// CONFIGURED FOR EITHER THE TFT SHIELD OR THE BREAKOUT BOARD.
// SEE RELEVANT COMMENTS IN Adafruit_TFTLCD.h FOR SETUP.
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_TFTLCD.h> // Hardware-specific library
// The control pins for the LCD can be assigned to any digital or
// analog pins...but we'll use the analog pins as this allows us to
// double up the pins with the touch screen (see the TFT paint example).
#define LCD_CS A3 //
#define LCD_CD A2 //
#define LCD_WR A1 //
#define LCD_RD A0 //
#define LCD_RESET A4 //
// When using the BREAKOUT BOARD only, use these 8 data lines to the LCD:
// For the Arduino Uno, Duemilanove, Diecimila, etc.:
// D0 connects to digital pin 8 (Notice these are
// D1 connects to digital pin 9 NOT in order!)
// D2 connects to digital pin 2
// D3 connects to digital pin 3
// D4 connects to digital pin 4
// D5 connects to digital pin 5
// D6 connects to digital pin 6
// D7 connects to digital pin 7
// For the Arduino Mega, use digital pins 22 through 29
// (on the 2-row header at the end of the board).
// Assign human-readable names to some common 16-bit color values:
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
// If using the shield, all control and data lines are fixed, and
// a simpler declaration can optionally be used:
// Adafruit_TFTLCD tft;
void setup(void) {
Serial.begin(9600);
Serial.println(F("TFT LCD test"));
#ifdef USE_ADAFRUIT_SHIELD_PINOUT
Serial.println(F("Using Adafruit 2.8" TFT Arduino Shield Pinout"));
#else
Serial.println(F("Using Adafruit 2.8" TFT Breakout Board Pinout"));
#endif
Serial.print("TFT size is "); Serial.print(tft.width()); Serial.print("x"); Serial.println(tft.height());
tft.reset();
uint16_t identifier = tft.readID();
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
} else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
} else if(identifier == 0x7575) {
Serial.println(F("Found HX8347G LCD driver"));
} else if(identifier == 0x9341) {
Serial.println(F("Found ILI9341 LCD driver"));
} else if(identifier == 0x8357) {
Serial.println(F("Found HX8357D LCD driver"));
} else {
Serial.print(F("Unknown LCD driver chip: "));
Serial.println(identifier, HEX);
Serial.println(F("If using the Adafruit 2.8" TFT Arduino shield, the line:"));
Serial.println(F(" #define USE_ADAFRUIT_SHIELD_PINOUT"));
Serial.println(F("should appear in the library header (Adafruit_TFT.h)."));
Serial.println(F("If using the breakout board, it should NOT be #defined!"));
Serial.println(F("Also if using the breakout, double-check that all wiring"));
Serial.println(F("matches the tutorial."));
// return;
}
//tft.begin(identifier);
tft.begin(0x9341);
...
IT WORKS ! SOLVED