Arduino 2.4" TFT Shield

[system]

Hello,
I am new to Arduino touch programming and I'm confused by a certain logical error. I'm just testing out various commands in the program. The program is as follows:

#include "TFTLCD.h"
#include "TouchScreen.h"

#define XP 6
#define XM A2
#define YP A1
#define YM 7

#define TS_MINX 150
#define TS_MAXX 920
#define TS_MINY 120
#define TS_MAXY 940

TouchScreen ts = TouchScreen(XP,YP,XM,YM,300);

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_RESET A4

#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF

#define PENRADIUS 40
#define MINPRESSURE 10
#define MAXPRESSURE 1000

TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

void setup()
{
Serial.begin(9600);
Serial.println("Start");

tft.reset();
tft.initDisplay();
tft.fillScreen(BLACK);

tft.drawVerticalLine(0,0,240,GREEN);
tft.fillRect(0, 0, 40, 40, RED);
tft.fillRect(40, 40, 40, 40, YELLOW);
tft.fillRect(80, 80, 40, 40, BLUE);
tft.fillCircle(50,50,20,GREEN);
}

//Successful execution up to this point

void loop()
{
Point p = ts.getPoint();
tft.drawRect(0, 0, 40, 40, WHITE); //Does not execute
if(p.z > MINPRESSURE && p.z < MAXPRESSURE)
{
p.x = map(p.x, TS_MINX, TS_MAXX, 0, tft.width());
p.y = map(p.y, TS_MINY, TS_MAXY, 0, tft.height());
tft.fillCircle(p.x,p.y,5,GREEN); //Does not execute on touch
}
}

What could possibly be the error for this? The program compiles successfully but the output is not logically correct. I'm attaching 2 photos of the LCD screen : one is the first output and the other is the output on touch

[system]

Hello,
I am new to Arduino Touch programming. I'm just testing out various commands and I hit on a logical snag. Here's the program:

---

#include "TFTLCD.h"
#include "TouchScreen.h"

#define XP 6
#define XM A2
#define YP A1
#define YM 7

#define TS_MINX 150
#define TS_MAXX 920
#define TS_MINY 120
#define TS_MAXY 940

TouchScreen ts = TouchScreen(XP,YP,XM,YM,300);

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_RESET A4

#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF

#define PENRADIUS 40
#define MINPRESSURE 10
#define MAXPRESSURE 1000

TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

void setup()
{
Serial.begin(9600);
Serial.println("Start");

tft.reset();
tft.initDisplay();
tft.fillScreen(BLACK);

tft.drawVerticalLine(0,0,240,GREEN);
tft.fillRect(0, 0, 40, 40, RED);
tft.fillRect(40, 40, 40, 40, YELLOW);
tft.fillRect(80, 80, 40, 40, BLUE);
tft.fillCircle(50,50,20,GREEN);
}

//Successful execution logically

void loop()
{
Point p = ts.getPoint();
tft.drawRect(0, 0, 40, 40, WHITE); //Does not execute on screen
if(p.z > MINPRESSURE && p.z < MAXPRESSURE)
{
p.x = map(p.x, TS_MINX, TS_MAXX, 0, tft.width());
p.y = map(p.y, TS_MINY, TS_MAXY, 0, tft.height());
tft.fillCircle(p.x,p.y,5,GREEN); //Does not execute on screen
}
}

What could be the problem? I'm attaching two photos, one shows the screen output on execution and the other shows the output on touch at the centre of the screen
Thank you!

[nickgammon]

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