200 lines
6.2 KiB
C++
200 lines
6.2 KiB
C++
// Paint example specifically for the TFTLCD breakout board.
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// If using the Arduino shield, use the tftpaint_shield.pde sketch instead!
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// DOES NOT CURRENTLY WORK ON ARDUINO LEONARDO
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#include <Adafruit_GFX.h> // Core graphics library
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#include <Adafruit_TFTLCD.h> // Hardware-specific library
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#include <TouchScreen.h>
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#if defined(__SAM3X8E__)
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#undef __FlashStringHelper::F(string_literal)
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#define F(string_literal) string_literal
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#endif
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// When using the BREAKOUT BOARD only, use these 8 data lines to the LCD:
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// For the Arduino Uno, Duemilanove, Diecimila, etc.:
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// D0 connects to digital pin 8 (Notice these are
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// D1 connects to digital pin 9 NOT in order!)
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// D2 connects to digital pin 2
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// D3 connects to digital pin 3
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// D4 connects to digital pin 4
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// D5 connects to digital pin 5
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// D6 connects to digital pin 6
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// D7 connects to digital pin 7
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// For the Arduino Mega, use digital pins 22 through 29
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// (on the 2-row header at the end of the board).
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// D0 connects to digital pin 22
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// D1 connects to digital pin 23
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// D2 connects to digital pin 24
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// D3 connects to digital pin 25
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// D4 connects to digital pin 26
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// D5 connects to digital pin 27
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// D6 connects to digital pin 28
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// D7 connects to digital pin 29
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// For the Arduino Due, use digital pins 33 through 40
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// (on the 2-row header at the end of the board).
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// D0 connects to digital pin 33
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// D1 connects to digital pin 34
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// D2 connects to digital pin 35
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// D3 connects to digital pin 36
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// D4 connects to digital pin 37
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// D5 connects to digital pin 38
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// D6 connects to digital pin 39
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// D7 connects to digital pin 40
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#define YP A3 // must be an analog pin, use "An" notation!
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#define XM A2 // must be an analog pin, use "An" notation!
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#define YM 9 // can be a digital pin
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#define XP 8 // can be a digital pin
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#define TS_MINX 150
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#define TS_MINY 120
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#define TS_MAXX 920
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#define TS_MAXY 940
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// For better pressure precision, we need to know the resistance
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// between X+ and X- Use any multimeter to read it
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// For the one we're using, its 300 ohms across the X plate
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TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
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#define LCD_CS A3
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#define LCD_CD A2
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#define LCD_WR A1
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#define LCD_RD A0
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// optional
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#define LCD_RESET A4
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// Assign human-readable names to some common 16-bit color values:
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#define BLACK 0x0000
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#define BLUE 0x001F
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#define RED 0xF800
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#define GREEN 0x07E0
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#define CYAN 0x07FF
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#define MAGENTA 0xF81F
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#define YELLOW 0xFFE0
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#define WHITE 0xFFFF
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Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
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#define BOXSIZE 40
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#define PENRADIUS 3
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int oldcolor, currentcolor;
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void setup(void) {
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Serial.begin(9600);
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Serial.println(F("Paint!"));
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tft.reset();
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uint16_t identifier = tft.readID();
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if(identifier == 0x9325) {
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Serial.println(F("Found ILI9325 LCD driver"));
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} else if(identifier == 0x9328) {
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Serial.println(F("Found ILI9328 LCD driver"));
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} else if(identifier == 0x7575) {
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Serial.println(F("Found HX8347G LCD driver"));
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} else {
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Serial.print(F("Unknown LCD driver chip: "));
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Serial.println(identifier, HEX);
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return;
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}
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tft.begin(identifier);
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tft.fillScreen(BLACK);
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tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
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tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
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tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
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tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
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tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
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tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
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// tft.fillRect(BOXSIZE*6, 0, BOXSIZE, BOXSIZE, WHITE);
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tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
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currentcolor = RED;
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pinMode(13, OUTPUT);
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}
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#define MINPRESSURE 10
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#define MAXPRESSURE 1000
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void loop()
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{
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digitalWrite(13, HIGH);
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Point p = ts.getPoint();
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digitalWrite(13, LOW);
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// if sharing pins, you'll need to fix the directions of the touchscreen pins
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//pinMode(XP, OUTPUT);
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pinMode(XM, OUTPUT);
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pinMode(YP, OUTPUT);
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//pinMode(YM, OUTPUT);
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// we have some minimum pressure we consider 'valid'
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// pressure of 0 means no pressing!
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if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
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/*
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Serial.print("X = "); Serial.print(p.x);
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Serial.print("\tY = "); Serial.print(p.y);
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Serial.print("\tPressure = "); Serial.println(p.z);
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*/
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if (p.y < (TS_MINY-5)) {
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Serial.println("erase");
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// press the bottom of the screen to erase
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tft.fillRect(0, BOXSIZE, tft.width(), tft.height()-BOXSIZE, BLACK);
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}
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// scale from 0->1023 to tft.width
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p.x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
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p.y = map(p.y, TS_MINY, TS_MAXY, tft.height(), 0);
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/*
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Serial.print("("); Serial.print(p.x);
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Serial.print(", "); Serial.print(p.y);
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Serial.println(")");
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*/
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if (p.y < BOXSIZE) {
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oldcolor = currentcolor;
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if (p.x < BOXSIZE) {
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currentcolor = RED;
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tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
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} else if (p.x < BOXSIZE*2) {
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currentcolor = YELLOW;
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tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, WHITE);
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} else if (p.x < BOXSIZE*3) {
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currentcolor = GREEN;
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tft.drawRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, WHITE);
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} else if (p.x < BOXSIZE*4) {
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currentcolor = CYAN;
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tft.drawRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, WHITE);
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} else if (p.x < BOXSIZE*5) {
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currentcolor = BLUE;
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tft.drawRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, WHITE);
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} else if (p.x < BOXSIZE*6) {
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currentcolor = MAGENTA;
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tft.drawRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, WHITE);
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}
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if (oldcolor != currentcolor) {
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if (oldcolor == RED) tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
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if (oldcolor == YELLOW) tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
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if (oldcolor == GREEN) tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
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if (oldcolor == CYAN) tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
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if (oldcolor == BLUE) tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
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if (oldcolor == MAGENTA) tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
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}
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}
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if (((p.y-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
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tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
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}
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}
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}
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