Couldn't start touchscreen

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Lorenzo80
 
Posts: 4
Joined: Thu Apr 23, 2015 5:30 am

Couldn't start touchscreen

Post by Lorenzo80 »

Good morning,

i have an arduino yun and i i bought 2 adafruit tft touch 2.8 resistive (Order Confirmation No: 751776-9454342006), one screen works perfectly, the other screen instead remains with the blank page.
I tested screens with the same software test that i found in the example library.
In the code the function ts.begin() never return 1 so the touchscreen is never inizialized.
In addiction I have to press the sides of the display because the light turn on.
I can not find the problem.

Can you help me?

Code: Select all

/***************************************************
  This is our touchscreen painting example for the Adafruit ILI9341 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 <Adafruit_GFX.h>    // Core graphics library
#include <SPI.h>
#include <Wire.h>      // this is needed even tho we aren't using it
#include <Adafruit_ILI9341.h>
#include <Adafruit_STMPE610.h>

// This is calibration data for the raw touch data to the screen coordinates
#define TS_MINX 150
#define TS_MINY 130
#define TS_MAXX 3800
#define TS_MAXY 4000

// The STMPE610 uses hardware SPI on the shield, and #8
#define STMPE_CS 8
Adafruit_STMPE610 ts = Adafruit_STMPE610(STMPE_CS);

// The display also uses hardware SPI, plus #9 & #10
#define TFT_CS 10
#define TFT_DC 9
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

// Size of the color selection boxes and the paintbrush size
#define BOXSIZE 40
#define BANNED 3
int oldcolor, currentcolor;

void setup(void) {
 // while (!Serial);     // used for leonardo debugging
 
  Serial.begin(9600);
  Serial.println(F("Touch Paint!"));
  
  tft.begin();

  if (!ts.begin()) {
    Serial.println("Couldn't start touchscreen controller");
    while (1);
  }
  Serial.println("Touchscreen started");
  
  tft.fillScreen(ILI9341_BLACK);
  
  // make the color selection boxes
  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
 
  // select the current color 'red'
  tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
  currentcolor = ILI9341_RED;
}


void loop()
{
  // See if there's any  touch data for us
  if (ts.bufferEmpty()) {
    return;
  }
  /*
  // You can also wait for a touch
  if (! ts.touched()) {
    return;
  }
  */

  // Retrieve a point  
  TS_Point p = ts.getPoint();
  
 /*
  Serial.print("X = "); Serial.print(p.x);
  Serial.print("\tY = "); Serial.print(p.y);
  Serial.print("\tPressure = "); Serial.println(p.z);  
 */
 
  // Scale from ~0->4000 to tft.width using the calibration #'s
  p.x = map(p.x, TS_MINX, TS_MAXX, 0, tft.width());
  p.y = map(p.y, TS_MINY, TS_MAXY, 0, tft.height());

  /*
  Serial.print("("); Serial.print(p.x);
  Serial.print(", "); Serial.print(p.y);
  Serial.println(")");
  */

  if (p.y < BOXSIZE) {
     oldcolor = currentcolor;

     if (p.x < BOXSIZE) { 
       currentcolor = ILI9341_RED; 
       tft.drawRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*2) {
       currentcolor = ILI9341_YELLOW;
       tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*3) {
       currentcolor = ILI9341_GREEN;
       tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*4) {
       currentcolor = ILI9341_CYAN;
       tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*5) {
       currentcolor = ILI9341_BLUE;
       tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     } else if (p.x < BOXSIZE*6) {
       currentcolor = ILI9341_MAGENTA;
       tft.drawRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_WHITE);
     }

     if (oldcolor != currentcolor) {
        if (oldcolor == ILI9341_RED) 
          tft.fillRect(0, 0, BOXSIZE, BOXSIZE, ILI9341_RED);
        if (oldcolor == ILI9341_YELLOW) 
          tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, ILI9341_YELLOW);
        if (oldcolor == ILI9341_GREEN) 
          tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, ILI9341_GREEN);
        if (oldcolor == ILI9341_CYAN) 
          tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, ILI9341_CYAN);
        if (oldcolor == ILI9341_BLUE) 
          tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, ILI9341_BLUE);
        if (oldcolor == ILI9341_MAGENTA) 
          tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, ILI9341_MAGENTA);
     }
  }
  if (((p.y-BANNED) > BOXSIZE) && ((p.y+BANNED) < tft.height())) {
    tft.fillCircle(p.x, p.y, BANNED, currentcolor);
  }
}

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Couldn't start touchscreen

Post by adafruit_support_rick »

Please post clear, detailed pictures of both sides of the non-working screen.

User avatar
Lorenzo80
 
Posts: 4
Joined: Thu Apr 23, 2015 5:30 am

Re: Couldn't start touchscreen

Post by Lorenzo80 »

Hello,

these are the pictures of both sides, i cut the number 11-13 and used ICSP as arduino Leonardo.
This iis a video of bad lighting:
https://BANNED.live.com/redir?resid=1 ... 328b%21107
Attachments
down3.jpg
down3.jpg (156.16 KiB) Viewed 692 times
down1.jpg
down1.jpg (37.83 KiB) Viewed 692 times
Last edited by Lorenzo80 on Thu Apr 23, 2015 5:13 pm, edited 2 times in total.

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Couldn't start touchscreen

Post by adafruit_support_rick »

The flex cable connector is loose. Please make sure the cable is fully inserted in the connector and push the two black 'ears' in to secure the cable.
Ears.png
Ears.png (692.27 KiB) Viewed 678 times

User avatar
Lorenzo80
 
Posts: 4
Joined: Thu Apr 23, 2015 5:30 am

Re: Couldn't start touchscreen

Post by Lorenzo80 »

I have reinserted the cable and now the screen works well, thank!

User avatar
adafruit_support_rick
 
Posts: 35092
Joined: Tue Mar 15, 2011 11:42 am

Re: Couldn't start touchscreen

Post by adafruit_support_rick »

Cool!

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