'Ello 'ello!
I just purchased a TFT TouchScreen and am trying to run the example code there on the bottom. (Note: if anyone has any other code/ideas for this TFT screen, just let me know.)
I believe I have the required libraries (I don't get any 'library not found' error), but when I compile the code, I get the following error:
'int color' redeclared as different kind of symbol
at this line
int color = WHITE; //Paint brush color
I have tried searching around for this error, but can't seem to find anything. For what it's worth, the console outputs some stuff as well, this looks to be the most important error it shows:
sketch_jan17a:50: error: 'int color' redeclared as different kind of symbol
C:\Program Files (x86)\Arduino\libraries\TFT/utility/Adafruit_GFX.h:74: error: previous declaration of 'typedef uint16_t color'
sketch_jan17a:50: error: 'WHITE' was not declared in this scope
sketch_jan17a:56: error: 'TouchScreen' does not name a type
sketch_jan17a.ino: In function 'void setup()':
(then a lot more '' was not declared in this scope).
Any ideas? Am I overlooking something simple? Thanks for any advice!
edit: here's the full code
// Paint application - Demonstate both TFT and Touch Screen
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <stdint.h>
#include <TouchScreen.h>
#include <TFT.h>
#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) // mega
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A1 // must be an analog pin, use "An" notation!
#define YM 54 // can be a digital pin, this is A0
#define XP 57 // can be a digital pin, this is A3
#elif defined(__AVR_ATmega32U4__) // leonardo
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A1 // must be an analog pin, use "An" notation!
#define YM 18 // can be a digital pin, this is A0
#define XP 21 // can be a digital pin, this is A3
#else //168, 328, something else
#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
//Measured ADC values for (0,0) and (210-1,320-1)
//TS_MINX corresponds to ADC value when X = 0
//TS_MINY corresponds to ADC value when Y = 0
//TS_MAXX corresponds to ADC value when X = 240 -1
//TS_MAXY corresponds to ADC value when Y = 320 -1
#define TS_MINX 140
#define TS_MAXX 900
#define TS_MINY 120
#define TS_MAXY 940
int color = WHITE; //Paint brush color
// For better pressure precision, we need to know the resistance
// between X+ and X- Use any multimeter to read it
// The 2.8" TFT Touch shield has 300 ohms across the X plate
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300); //init TouchScreen port pins
void setup()
{
Tft.init(); //init TFT library
pinMode(0,OUTPUT);
//Draw the pallet
Tft.fillRectangle(0,0,30,10,BLACK);
Tft.fillRectangle(30,0,30,10,RED);
Tft.fillRectangle(60,0,30,10,GREEN);
Tft.fillRectangle(90,0,30,10,BLUE);
Tft.fillRectangle(120,0,30,10,CYAN);
Tft.fillRectangle(150,0,30,10,YELLOW);
Tft.fillRectangle(180,0,30,10,WHITE);
Tft.fillRectangle(210,0,30,10,GRAY1);
}
void loop()
{
// a point object holds x y and z coordinates.
Point p = ts.getPoint();
//map the ADC value read to into pixel co-ordinates
p.x = map(p.x, TS_MINX, TS_MAXX, 240, 0);
p.y = map(p.y, TS_MINY, TS_MAXY, 320, 0);
// we have some minimum pressure we consider 'valid'
// pressure of 0 means no pressing!
if (p.z > ts.pressureThreshhold) {
// Detect paint brush color change
if(p.y < 15)
{
if(p.x >= 0 && p.x < 30)
{
color = BLACK;
}
if(p.x >= 30 && p.x < 60)
{
color = RED;
digitalWrite(0,HIGH);
}
if(p.x >= 60 && p.x < 90)
{
color = GREEN;
}
if(p.x >= 90 && p.x < 110)
{
color = BLUE;
digitalWrite(0,LOW);
}
if(p.x >= 120 && p.x < 150)
{
color = CYAN;
}
if(p.x >= 150 && p.x < 180)
{
color = YELLOW;
}
if(p.x >= 180 && p.x < 210)
{
color = WHITE;
}
if(p.x >= 210 && p.x < 240)
{
color = GRAY1;
}
}
else
{
Tft.fillCircle(p.x,p.y,2,color);
}
}
}
