The code is base on adafruit / TFTLCD-Library example code
另外，雖然範例寫說不能在LEONARDO跑，可是我用起來沒什麼問題，一直到現在才發現這句提示XD
This code run on my LEONARDO is well, I don't know why code say "DOES NOT CURRENTLY WORK ON ARDUINO LEONARDO"
// Paint example specifically for the TFTLCD breakout board.
// If using the Arduino shield, use the tftpaint_shield.pde sketch instead!
// DOES NOT CURRENTLY WORK ON ARDUINO LEONARDO
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_TFTLCD.h> // Hardware-specific library
#include <TouchScreen.h>
#if defined(__SAM3X8E__)
#undef __FlashStringHelper::F(string_literal)
#define F(string_literal) string_literal
#endif
// When using the BREAKOUT BOARD only, use these 8 data lines to the LCD:
// For the Arduino Uno, Duemilanove, Diecimila, etc.:
// D0 connects to digital pin 8 (Notice these are
// D1 connects to digital pin 9 NOT in order!)
// D2 connects to digital pin 2
// D3 connects to digital pin 3
// D4 connects to digital pin 4
// D5 connects to digital pin 5
// D6 connects to digital pin 6
// D7 connects to digital pin 7
// For the Arduino Mega, use digital pins 22 through 29
// (on the 2-row header at the end of the board).
// D0 connects to digital pin 22
// D1 connects to digital pin 23
// D2 connects to digital pin 24
// D3 connects to digital pin 25
// D4 connects to digital pin 26
// D5 connects to digital pin 27
// D6 connects to digital pin 28
// D7 connects to digital pin 29
// For the Arduino Due, use digital pins 33 through 40
// (on the 2-row header at the end of the board).
// D0 connects to digital pin 33
// D1 connects to digital pin 34
// D2 connects to digital pin 35
// D3 connects to digital pin 36
// D4 connects to digital pin 37
// D5 connects to digital pin 38
// D6 connects to digital pin 39
// D7 connects to digital pin 40
#define YP A3 // must be an analog pin, use "An" notation!
#define XM A2 // must be an analog pin, use "An" notation!
#define YM 9 // can be a digital pin
#define XP 8 // can be a digital pin
/*
#define TS_MINX 150
#define TS_MINY 120
#define TS_MAXX 920
#define TS_MAXY 940
*/
int TS_XA;
int TS_YA;
int TS_XB;
int TS_YB;
int PIXEL_XA;
int PIXEL_XB;
int PIXEL_YA;
int PIXEL_YB;
// 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
// 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
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;
bool touch_pressed=false;
bool rot;
void setup(void) {
Serial.begin(9600);
Serial.println(F("Paint!"));
tft.reset();
uint16_t identifier = tft.readID();
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
} else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
} else if(identifier == 0x7575) {
Serial.println(F("Found HX8347G LCD driver"));
} else if(identifier == 0x9341) {
Serial.println(F("Found ILI9341 LCD driver"));
} else if(identifier == 0x8357) {
Serial.println(F("Found HX8357D LCD driver"));
} else {
Serial.print(F("Unknown LCD driver chip: "));
Serial.println(identifier, HEX);
Serial.println(F("If using the Adafruit 2.8\" TFT Arduino shield, the line:"));
Serial.println(F(" #define USE_ADAFRUIT_SHIELD_PINOUT"));
Serial.println(F("should appear in the library header (Adafruit_TFT.h)."));
Serial.println(F("If using the breakout board, it should NOT be #defined!"));
Serial.println(F("Also if using the breakout, double-check that all wiring"));
Serial.println(F("matches the tutorial."));
return;
}
tft.begin(identifier);
touchcal();
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);
}
TSPoint touchcal_dot(int dx,int dy)
{
TSPoint p;
char z100=100;
int pxb=0,pyb=0;
tft.fillScreen(WHITE);
while(z100>0)//make sure release
{
p = ts.getPoint();
// if sharing pins, you'll need to fix the directions of the touchscreen pins
//pinMode(XP, OUTPUT);
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
//pinMode(YM, OUTPUT);
if(p.z > ts.pressureThreshhold)z100=100;
else if(z100)z100-=1;
}
tft.fillScreen(BLACK);
//tft.fillRect(dx-1, dy-1, 3, 3, WHITE);//dot shape
tft.drawLine(dx-10,dy,dx+10,dy,WHITE);
tft.drawLine(dx,dy-10,dx,dy+10,WHITE);//cross shape
while(z100<16)//get 16times value make more stable
{
p = ts.getPoint();
// if sharing pins, you'll need to fix the directions of the touchscreen pins
//pinMode(XP, OUTPUT);
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
//pinMode(YM, OUTPUT);
if(p.z > ts.pressureThreshhold)
{
pxb+=p.x;
pyb+=p.y;
z100+=1;
}
}
p.x=pxb/16;
p.y=pyb/16;
return(p);
}
void touchcal()
{
TSPoint p;
int x1,y1,y2;
float calcbuf;
calcbuf=0.2;
calcbuf*=tft.width();
PIXEL_XA=calcbuf;
calcbuf=0.8;
calcbuf*=tft.width();
PIXEL_XB=calcbuf;
calcbuf=0.2;
calcbuf*=tft.height();
PIXEL_YA=calcbuf;
calcbuf=0.8;
calcbuf*=tft.height();
PIXEL_YB=calcbuf;
//0+40-1
//239-40-1
//319-40-1
p=touchcal_dot(PIXEL_XA,PIXEL_YA);
x1=p.x;
y2=p.y;
p=touchcal_dot(PIXEL_XA,PIXEL_YB);
y1=p.y;
TS_XA=(x1+p.x)/2;
p=touchcal_dot(PIXEL_XB,PIXEL_YB);
x1=p.x;
TS_YB=(y1+p.y)/2;
p=touchcal_dot(PIXEL_XB,PIXEL_YA);
TS_XB=(x1+p.x)/2;
TS_YA=(y2+p.y)/2;
tft.fillScreen(WHITE);
tft.fillScreen(BLACK);
}
void loop()
{
digitalWrite(13, HIGH);
TSPoint p = ts.getPoint();
digitalWrite(13, LOW);
// if sharing pins, you'll need to fix the directions of the touchscreen pins
//pinMode(XP, OUTPUT);
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 > ts.pressureThreshhold) {
/*
Serial.print("X = "); Serial.print(p.x);
Serial.print("\tY = "); Serial.print(p.y);
Serial.print("\tPressure = "); Serial.println(p.z);
*/
// scale from 0->1023 to tft.width
p.x = map(p.x, TS_XA, TS_XB, PIXEL_XA, PIXEL_XB);
p.y = map(p.y, TS_YA, TS_YB, PIXEL_YA, PIXEL_YB);
/*
Serial.print("("); Serial.print(p.x);
Serial.print(", "); Serial.print(p.y);
Serial.println(")");
*/
if (p.y > tft.height()) {
Serial.println("erase");
// press the bottom of the screen to erase
tft.fillRect(0, BOXSIZE, tft.width(), tft.height()-BOXSIZE, BLACK);
}
else 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);
}
}
else if (((p.y-PENRADIUS) > BOXSIZE) && ((p.y+PENRADIUS) < tft.height())) {
tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
}
}
}
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