TAKE A LOOK AT THIS PLEASE!

[romny_19]

Hi,
im trying to make 4 LEDs turn on with my TFT touchscreen shield…

i have an arduino MEGA 2560 R3, and the touchscreen shield i have is from Seeedstudio: TFT 2.8" touchscreen sheild V1 (RED).

so far this is all i have, i just need to write the code to turn on the LEDs when i press each square, and this is where i need help.

i dont know how to do that, any of you guys can just help me making one square to work. after that ill just take a look at it and then i can make the other 3 to work.

this is the code i have:

#include <stdint.h>
#include <TouchScreen.h>
#include <TFT.h>

#ifdef SEEEDUINO
#define YP A2 // must be an analog pin, use “An” notation!
#define XM A1 // must be an analog pin, use “An” notation!
#define YM 14 // can be a digital pin, this is A0
#define XP 17 // can be a digital pin, this is A3
#endif

void setup()
{

Tft.init(); //init TFT library
pinMode(0,OUTPUT);

            //  X-Y-Length-Height  //

Tft.fillRectangle(0, 0, 240, 320, WHITE); //Background
Tft.fillRectangle(0, 0, 240, 12, BLUE); //blue bar
Tft.fillRectangle(212, 1, 21, 10, BLACK); // battery body
Tft.fillRectangle(210, 3, 2, 6, BLACK); // battery tip
Tft.fillRectangle(219, 2, 13, 8, GREEN); // battery level at FULL —> (201, 2, 19, 8, GREEN);

//statusbar
Tft.drawString(“Romny 12/31/12”,5, 4, 1, YELLOW);

//4 squares
Tft.fillRectangle(30, 50, 80, 80, RED);//1
Tft.fillRectangle(130, 50, 80, 80, GREEN);//2
Tft.fillRectangle(30, 160, 80, 80, BLUE);//3
Tft.fillRectangle(130, 160, 80, 80, YELLOW);//4

//square Label
Tft.drawString(“LED1”,40, 80, 2, BLACK);
Tft.drawString(“LED2”,40, 190, 2, BLACK);
Tft.drawString(“LED3”,135, 80, 2, BLACK);
Tft.drawString(“LED4”,135, 190, 2, BLACK);
}

void loop()
{

}

libraries.rar (385 KB)

4 LEDs_Code.rar (633 Bytes)

[romny_19]

ok this is what i have so far, but im getting an error.

#include <stdint.h>
#include <TouchScreen.h>
#include <TFT.h>

#ifdef SEEEDUINO
#define YP A2 // must be an analog pin, use “An” notation!
#define XM A1 // must be an analog pin, use “An” notation!
#define YM A0 // can be a digital pin, this is A0
#define XP A3 // can be a digital pin, this is A3
#endif

#define TS_MINX 140
#define TS_MAXX 900
#define TS_MINY 120
#define TS_MAXY 940

int GREENled = 30;
int REDled = 31;
int YELLOWled = 32;
int BLUEled = 33;

void setup()
{

Tft.init(); //init TFT library
pinMode(0,OUTPUT);
pinMode(GREENled, OUTPUT);
pinMode(REDled, OUTPUT);
pinMode(YELLOWled, OUTPUT);
pinMode(BLUEled, OUTPUT);

            //  X-Y-Length-Height  //

Tft.fillRectangle(0, 0, 240, 320, WHITE); //Background
Tft.fillRectangle(0, 0, 240, 12, BLUE); //blue bar
Tft.fillRectangle(212, 1, 21, 10, BLACK); // battery body
Tft.fillRectangle(210, 3, 2, 6, BLACK); // battery tip
Tft.fillRectangle(219, 2, 13, 8, GREEN); // battery level at FULL —> (201, 2, 19, 8, GREEN);

//statusbar
Tft.drawString(“Romny 12/31/12”,5, 4, 1, YELLOW);

//4 squares
Tft.fillRectangle(30, 50, 80, 80, RED);//1
Tft.fillRectangle(130, 50, 80, 80, GREEN);//2
Tft.fillRectangle(30, 160, 80, 80, BLUE);//3
Tft.fillRectangle(130, 160, 80, 80, YELLOW);//4

//square Label
Tft.drawString(“LED1”,40, 80, 2, BLACK);
Tft.drawString(“LED2”,40, 190, 2, BLACK);
Tft.drawString(“LED3”,135, 80, 2, BLACK);
Tft.drawString(“LED4”,135, 190, 2, BLACK);
}

void loop () {
int MapX1 = 239;
int MapX2 = 0;
int MapY1 = 319;
int MapY2 = 0;

// a point object holds x y and z coordinates
Point p = ts.getPoint();

p.x = map(p.x, TS_MINX, TS_MAXX, MapX1, MapX2);
p.y = map(p.y, TS_MINY, TS_MAXY, MapY1, MapY2);

// we have some minimum pressure we consider ‘valid’
// pressure of 0 means no pressing!
if (p.z > ts.pressureThreshhold) {
//If you get here, someone is touching the screen at (p.x, p.y) coordinates.
//p.z has how hard they are pressing.

Tft.fillCircle(p.x,p.y,2,GREEN);
// The corners of button 1 are (30,50) and (80,80)
if (p.x > 30 && p.x < 80 && p.y > 50 && p.y < 80) {
//Put your code that turns on the LED Here.
digitalWrite(REDled, HIGH);
delay(1000);
}
}
}

[Jacket_Chen]

p.x = map(p.x, TS_MINX, TS_MAXX, MapX1, MapX2);
p.y = map(p.y, TS_MINY, TS_MAXY, MapY1, MapY2);

// we have some minimum pressure we consider ‘valid’
// pressure of 0 means no pressing!
if (p.z > ts.pressureThreshhold) {
//If you get here, someone is touching the screen at (p.x, p.y) coordinates.
//p.z has how hard they are pressing.

Whether you refer to our ArduinoPhnoe’s code? But you know, this is a large work.

And,We are a company who provide tools for engineers, makers and hobbyist. Most of our products have documents on how-to use. You are free to choose appropriate modules and assemble them yourselves.So we just do some applications when we are free.

[romny_19]

I already figure it out.

I fixed the code. It works perfect

[jwmartin123]

I found that the code segment : if (p.z > ts.pressureThreshhold) can be removed as it does absolutely nothing.

In the Touchscreen.cpp file, the threshold is written thusly: pressureThreshhold = 10; yet in the touchscreen demo program, pressure values in the hundreds are returned. One might think the pressure threshold value would be larger to preclude inadvertent triggering. On the other hand, there may be more to it than I casually observed (I’m not a programmer).

[Jacket_Chen]

@romny_19

I already figure it out.

I fixed the code. It works perfect

Could you touch it and then turn color?

Wow~~could you post your code

[romny_19]

Yes, each color corresponds to each led.

And also I made some changes.

I put another square ( the black one) to turn off all LEDs

[Jacket_Chen]

Sounds good, could you share it with us.