My stupid TFT Touch shield won't work... Please help me!!!!
This is the shield: http://www.amazon.com/Touch-Screen-Socket-Arduino-Module/dp/B00UAA2XIC/ref=sr_1_1?ie=UTF8&qid=1459026927&sr=8-1&keywords=arduino+tft
And this is my code:
#include "TouchScreen.h"
#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 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
// Pins for the LCD Shield
#define YP A3 // must be analog
#define XM A2 // must be analog
#define YM 9 // digital or analog pin
#define XP 8 // digital or analog pin
#define MINPRESSURE 1
#define MAXPRESSURE 1000
// Calibration mins and max for raw data when touching edges of screen
#define TS_MINX 210
#define TS_MINY 210
#define TS_MAXX 915
#define TS_MAXY 910
// 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
const char* touchMeStr = "Touch Me / Press Button";
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
int touchCnt = 0;
int buttonState = 0;
long int timeCnt;
char drawChars[] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'};
const int SCREEN_TIMEOUT = 10000;
void setup() {
// put your setup code here, to run once:
tft.reset();
uint16_t identifier = tft.readID();
tft.begin(identifier);
tft.fillScreen(BLACK);
tft.setRotation(1);
tft.setCursor(30,100);
tft.setTextColor(RED);
tft.setTextSize(2);
tft.println("LCD driver chip: ");
tft.setCursor(100, 150);
tft.setTextColor(BLUE);
tft.println(identifier, HEX);
delay(3000);
tft.fillScreen(BLACK);
tft.setTextColor(YELLOW);
tft.setCursor(0, 0);
tft.println(touchMeStr);
timeCnt = millis();
}
void loop() {
// put your main code here, to run repeatedly:
// a point object holds x y and z coordinates
TSPoint p = ts.getPoint();
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
if (millis() > (timeCnt + SCREEN_TIMEOUT))
{
RunScreenSaver();
} else {
drawButtons();
}
// we have some minimum pressure we consider 'valid'
// pressure of 0 means no pressing
if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
// reset the screen
tft.fillScreen(BLACK);
tft.setCursor(0, 0);
tft.setTextSize(2);
tft.println(touchMeStr);
long colorPressure = (p.z * 65535) / 1000; //color changes dependent on pressure
colorPressure = YELLOW; // just to make it easier to see when testing
if (touchCnt == 10)
{
touchCnt = 0;
}
// May need to adjust if cordinates are being reversed due to screen rotation
int YY = tft.height() - (map(p.x, TS_MINX, TS_MAXX, 0, tft.height()));
int XX = tft.width() - (map(p.y, TS_MINY, TS_MAXY, 0, tft.width()));
// determine if a button has been pressed
if (XX > 295 && YY < 30) // first button region 30 up
buttonState = 0;
if ((XX >= 295 && YY >=30) && (XX >= 295 && YY < 60)) // second button region 30 thru 59
buttonState = 1;
if ((XX >= 295 && YY >=60) && (XX >= 295 && YY < 100)) // second button region 60 thru 99
buttonState = 2;
if ((XX > 295 && YY >=100) && (XX >= 295 && YY < 120)) // second button region 100 thru 119
buttonState = 3;
if ((XX > 295 && YY >= 120) && (XX >= 295 && YY < 155)) // second button region 120 thru 154
buttonState = 4;
if ((XX >= 295 && YY >= 155) && (XX >= 295 && YY < 200)) // second button region 155 thru 200
buttonState = 5;
// button pressed
switch (buttonState)
{
case 0:
tft.fillCircle(305, 20, 10, RED);
tft.drawCircle(305, 20, 10, GREEN);
tft.drawCircle(XX, YY, p.z / 10, colorPressure);
break;
case 1:
tft.fillTriangle(295, 60, 305, 40, 315, 60, RED);
tft.drawTriangle(XX, YY, XX + 50, YY + 50, YY - 50, XX - 50, colorPressure);
break;
case 2:
tft.fillRect(295, 75, 20, 15, RED);
tft.drawRect(XX, YY, 100, 50, colorPressure);
break;
case 3:
tft.drawCircle(308, 110, 10, RED);
tft.drawCircle(299, 110, 10, RED);
DrawDesign(XX, YY, 3, 25);
break;
case 4:
tft.drawTriangle(295, 155, 305, 125, 315, 140, RED);
tft.drawTriangle(300, 155, 310, 125, 320, 140, RED);
TriangleDesign(XX, YY, 5);
break;
case 5:
tft.drawChar(295, 160, 'a', RED, RED, 3);
tft.drawChar(XX, YY, drawChars[touchCnt], colorPressure, colorPressure, 6);
break;
}
// Prints out the raw and transposed data which is useful for troubleshooting
tft.setTextSize(1);
tft.setTextColor(colorPressure); // converts the pressure reading to a color
tft.print("Raw X = ");
tft.print(p.x);
tft.print(" RAW Y = ");
tft.println(p.y);
tft.print(" Pressure = ");
tft.println(p.z);
tft.print("ScreenX: ");
tft.println(XX);
tft.print("ScreenY: ");
tft.println(YY);
tft.print("LCD Driver: ");
tft.println(tft.readID(), HEX);
touchCnt = touchCnt + 1;
timeCnt = millis();
}
}
void drawButtons()
{
// Setup Buttons
// circle button unpressed
if (buttonState == 0)
tft.fillCircle(305, 20, 10, RED);
else
tft.fillCircle(305, 20, 10, GREEN);
// triangle button
if (buttonState == 1)
{
tft.fillTriangle(295, 60, 305, 40, 315, 60, RED);
} else {
tft.fillTriangle(295, 60, 305, 40, 315, 60, GREEN);
}
// rectangle button
if (buttonState == 2)
{
tft.fillRect(295, 75, 20, 15, RED);
} else {
tft.fillRect(295, 75, 20, 15, GREEN);
}
// circle button
if (buttonState == 3)
{
tft.drawCircle(308, 110, 10, RED);
tft.drawCircle(299, 110, 10, RED);
} else {
tft.drawCircle(308, 110, 10, GREEN);
tft.drawCircle(299, 110, 10, GREEN);
}
// triangle button
if (buttonState == 4)
{
tft.drawTriangle(295, 155, 305, 125, 315, 140, RED);
tft.drawTriangle(300, 155, 310, 125, 320, 140, RED);
} else {
tft.drawTriangle(295, 155, 305, 125, 315, 140, GREEN);
tft.drawTriangle(300, 155, 310, 125, 320, 140, GREEN);
}
// character draw button
if (buttonState == 5)
tft.drawChar(295, 160, 'a', RED, RED, 3);
else
tft.drawChar(295, 160, 'a', GREEN, GREEN, 3);
}
void RunScreenSaver()
{
randomSeed(millis() / 100);
int x = random(20, 300);
int y = random(20, 220);
tft.fillScreen(BLACK);
tft.setCursor(x - 50, y + 50);
//tft.setTextSize(x / 100);
tft.setTextSize(1);
tft.print("myTFT Screen Saver");
delay(1000);
}
void TriangleDesign(int XX, int YY, int mp)
{
for (int i=0; i<5; i++)
{
tft.drawTriangle(XX, YY, XX + (mp * i), YY + (mp * i), YY - (mp * i), XX - (mp * i), RED);
}
}
void DrawDesign(int XX, int YY, int mp, int rad)
{
for (int i=0; i<5; i++)
{
tft.drawCircle(XX + (i * mp), YY - (i * mp), rad, RED);
tft.drawCircle(XX + (i * mp), YY - (i * mp), rad, GREEN);
tft.drawCircle(XX + (i * mp), YY - (i * mp), rad, BLUE);
tft.drawCircle(XX + (i * mp), YY - (i * mp), rad, YELLOW);
}
}
void CircleMove(int speed)
{
for (int i = 0; i <320; i++)
{
tft.drawCircle(i + speed, 120, 30, WHITE);
tft.fillScreen(BLACK);
}
}
The shield is plugged into the Arduino like this
When I run the sketch, the TFT lights up. But it only displays a blank, white screen. This white screen does nothing.
Please tell me how I can fix this. What is the problem? Any help is always loved!
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