147 lines
4.6 KiB
C++
147 lines
4.6 KiB
C++
/***************************************************
|
|
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_AS.h> // Core graphics library
|
|
#include <SPI.h>
|
|
#include <Wire.h> // this is needed even tho we aren't using it
|
|
#include <Adafruit_ILI9341_STM.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_STM tft = Adafruit_ILI9341_STM(TFT_CS, TFT_DC);
|
|
|
|
// Size of the color selection boxes and the paintbrush size
|
|
#define BOXSIZE 40
|
|
#define PENRADIUS 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-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
|
|
tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
|
|
}
|
|
}
|