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Author Topic: LCD TFT com Linhas brancas (Semi-Resolvido) :)  (Read 1293 times)
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Boas amigos,

hoje recebi o LCD TFT 3.2" para o UNO comprado no ebay ao membro womarts (Podem ver aqui


Apos varias tentativas de librarias e tal, apenas acendia o "backlight" branco, perguntei ao vendedor que libraria usava e ele enviou-me um link com a libraria TFTLCD com o ide0022.

Apos passar o codigo de teste enviado por ele, o "tftpaint", o ecra atrofia todo cheio de linhas brancas sempre a piscar e tal.

acham que é problema do LCD ou nao?

vi este video

e acontece-me o mesmo do video aos 6 segundos, mas o meu esta ligado directo ao UNO.

o que pode ser?

cumprimentos
« Last Edit: March 18, 2013, 06:04:26 pm by tucandroid » Logged

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Bom dia amigos,

ja tentei mil e uma coisas e continua igual. smiley-sad

sera por culpa do codigo?
Code:
#include "TFTLCD.h"
#include "TouchScreen.h"


//Duemilanove/Diecimila/UNO/etc ('168 and '328 chips) microcontoller:



#define YP A3  // must be an analog pin, use "An" notation!
#define XM A2  // must be an analog pin, use "An" notation!
#define YM 8  // can be a digital pin
#define XP 7  // can be a digital pin

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

// For better pressure precision, we need to know the resistance
// between X+ and X- Use any multimeter to read it
// For the one we're using, its 300 ohms across the X plate
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);

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

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



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

#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;

void setup(void) {
  Serial.begin(9600);
  Serial.println("Paint!");
 
  tft.reset();
 
 // uint16_t identifier = tft.readRegister(0x0);
 // if (identifier == 0x9325) {
 //   Serial.println("Found ILI9325");
 // } else if (identifier == 0x9328) {
  //  Serial.println("Found ILI9328");
  //} else {
  //  Serial.print("Unknown driver chip ");
  //  Serial.println(identifier, HEX);
  //  while (1);
  //}

  tft.initDisplay();
  tft.fillScreen(BLACK);
 
  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
 // tft.fillRect(BOXSIZE*6, 0, BOXSIZE, BOXSIZE, WHITE);
 
 tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
 currentcolor = RED;
 
  pinMode(13, OUTPUT);
}



#define MINPRESSURE 10
#define MAXPRESSURE 1000



void loop()
{
  digitalWrite(13, HIGH);
  Point p = ts.getPoint();
  digitalWrite(13, LOW);


  pinMode(XM, OUTPUT);
  pinMode(YP, OUTPUT);
  //pinMode(YM, OUTPUT);

  // we have some minimum pressure we consider 'valid'
  // pressure of 0 means no pressing!

  if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {

   
    if (p.y < (TS_MINY-5)) {
      Serial.println("erase");
     // press the bottom of the screen to erase
      tft.fillRect(0, BOXSIZE, tft.width(), tft.height()-BOXSIZE, BLACK);
     
    }
    // turn from 0->1023 to tft.width
    p.x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
    p.y = map(p.y, TS_MINY, TS_MAXY, tft.height(), 0);

    if (320-p.y <BOXSIZE){
       oldcolor = currentcolor;
 
 
       if (p.x < BOXSIZE) {
         currentcolor = RED;
         tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*2) {
         currentcolor = YELLOW;
         tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*3) {
         currentcolor = GREEN;
         tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*4) {
         currentcolor = CYAN;
         tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*5) {
         currentcolor = BLUE;
         tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*6) {
         currentcolor = MAGENTA;
         tft.drawRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       
       if (oldcolor != currentcolor) {
          if (oldcolor == RED) tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
          if (oldcolor == YELLOW) tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
          if (oldcolor == GREEN) tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
          if (oldcolor == CYAN) tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
          if (oldcolor == BLUE) tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
          if (oldcolor == MAGENTA) tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
       }
    }
    if (((p.y-PENRADIUS) >0) && ((p.y+PENRADIUS) < tft.height())) {// BOXSIZE
      tft.fillCircle(p.x, 320-p.y, PENRADIUS, currentcolor);
    }
  }
}
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Você esta usando exemplos direto de alguma biblioteca dele? Tens que identificar se o erro é código ou hardware, acredito ser código, mas não podemos descartar nada, tente achar algum exemplo, do mais simples possível e execute-o, se der erro, e mais provável que seja hardware.
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Raspberry Pi (Model B)
Arduino MEGA 1280: ( Shield LCD 16x2, Ethernet, RFID )
Freescale Kinetis KL25Z [/

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ola Marcelo,

sim eu estou a usar o exemplo tftpaint, da libraria TFTLCD com a IDE0022.

esta IDE é a recomendada pelo vendedor, se tentar com a da adafruit ou assim, no IDE 1.5.2 nem imagem da sequer. smiley-sad

os pinos estao nas seguintes possiçoes:

LCD -> Arduino
*****************
LCD_RST -> A4
LCD_CS -> A3
LCD_RS -> A2
LCD_WR -> A1
LCD_RD -> A0
*****************
LCD_D0 -> 8
LCD_D1 -> 0
LCD_D2 -> 2
LCD_D3 -> 3
LCD_D4 -> 4
LCD_D5 -> 5
LCD_D6 -> 6
LCD_D7 -> 7
*****************
SD_SS -> 10
SD_DI -> 11
SD_DO -> 12
SD_SCK -> 13

se eu usar o exemplo SD, listfiles, escolhendo o pino 10, no serial monitor da os ficheiros sem problemas.
ou seja, a parte do SD penso que esteja sem problemas.




cumprimentos
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ja consegui por o animal a dar direito. smiley

Tive de ligar assim na protoboard:

LCD_RD -> 5v
3,3v -> 5v
5v -> 5v

ja esta como novo. smiley

agora so me falta conseguir usar uma biblioteca mais recente, pois a unica que consigo por a dar é a TFTLCD ide 0022. smiley-sad

cumprimentos
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Olá,

Se estiver utilizando o Shield no UNO R3, utilize o seguinte código...

Dessa maneira não precisa fazer  malabarismo...

Code:
#include "TFTLCD.h"
#include "TouchScreen.h"


//Duemilanove/Diecimila/UNO/etc ('168 and '328 chips) microcontoller:



#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

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

// For better pressure precision, we need to know the resistance
// between X+ and X- Use any multimeter to read it
// For the one we're using, its 300 ohms across the X plate
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);

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

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



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

#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;

void setup(void) {
  Serial.begin(9600);
  Serial.println("Paint!");
 
  tft.reset();
 
  uint16_t identifier = tft.readRegister(0x0);
  Serial.println(identifier, HEX);
  /*
  if (identifier == 0x9325) {
    Serial.println("Found ILI9325");
  } else if (identifier == 0x9328) {
    Serial.println("Found ILI9328");
  } else {
    Serial.print("Unknown driver chip ");
    Serial.println(identifier, HEX);
    while (1);
  }
  */

  tft.initDisplay();
  tft.fillScreen(BLACK);
 
  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
 // tft.fillRect(BOXSIZE*6, 0, BOXSIZE, BOXSIZE, WHITE);
 
 tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
 currentcolor = RED;
 
  pinMode(13, OUTPUT);
}



#define MINPRESSURE 10
#define MAXPRESSURE 1000



void loop()
{
  digitalWrite(13, HIGH);
  Point p = ts.getPoint();
  digitalWrite(13, LOW);


  pinMode(XM, OUTPUT);
  pinMode(YP, OUTPUT);
  //pinMode(YM, OUTPUT);

  // we have some minimum pressure we consider 'valid'
  // pressure of 0 means no pressing!

  if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {

   
    if (p.y < (TS_MINY-5)) {
      Serial.println("erase");
     // press the bottom of the screen to erase
      tft.fillRect(0, BOXSIZE, tft.width(), tft.height()-BOXSIZE, BLACK);
     
    }
    // turn from 0->1023 to tft.width
    p.x = map(p.x, TS_MAXX, TS_MINX,  tft.width(), 0);
    p.y = map(p.y, TS_MAXY, TS_MINY,  tft.height(), 0);

    if (p.y < BOXSIZE) {
       oldcolor = currentcolor;
 
 
       if (p.x < BOXSIZE) {
         currentcolor = RED;
         tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*2) {
         currentcolor = YELLOW;
         tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*3) {
         currentcolor = GREEN;
         tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*4) {
         currentcolor = CYAN;
         tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*5) {
         currentcolor = BLUE;
         tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       else if (p.x < BOXSIZE*6) {
         currentcolor = MAGENTA;
         tft.drawRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, WHITE);
       }
       
       if (oldcolor != currentcolor) {
          if (oldcolor == RED) tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
          if (oldcolor == YELLOW) tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
          if (oldcolor == GREEN) tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
          if (oldcolor == CYAN) tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
          if (oldcolor == BLUE) tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
          if (oldcolor == MAGENTA) tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
       }
    }
    if (((p.y-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
      tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
    }
  }
}
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