arduinoでtouchscreen

概要

arduinoでtouchscreenやってみた。

写真

サンプルコード

#include <Adafruit_GFX.h>
#include "Adafruit_TFTLCD.h"
#include "TouchScreen.h"

#define XP              8
#define YP              A3
#define XM              A2
#define YM              9
#define TS_MINX         150
#define TS_MAXX         920
#define TS_MINY         120
#define TS_MAXY         940
#define LCD_CS          A3
#define LCD_CD          A2
#define LCD_WR          A1
#define LCD_RD          A0
#define LCD_RESET       A4
#define BLACK           0x0000
#define BLUE            0x001F
#define RED             0xF800
#define GREEN           0x07E0
#define CYAN            0x07FF
#define MAGENTA         0xF81F
#define YELLOW          0xFFE0
#define WHITE           0xFFFF
#define BOXSIZE         40
#define PENRADIUS       3
#define MINPRESSURE     10
#define MAXPRESSURE     1000

TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
int oldcolor,
    currentcolor;

void setup(void)
{
    Serial.begin(115200);
    Serial.println(F("Paint!"));
    tft.reset();
    uint16_t identifier = 0x9341;
    tft.begin(identifier);
    tft.fillScreen(BLACK);
    tft.setRotation(2);
    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.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
    currentcolor = RED;
}
void loop()
{
    Point p = ts.getPoint();
    pinMode(XM, OUTPUT);
    pinMode(YP, OUTPUT);
    if (p.z > MINPRESSURE && p.z < MAXPRESSURE)
    {
        if (p.y < (TS_MINY - 5))
        {
            Serial.println("erase");
            tft.fillRect(0, BOXSIZE, tft.width(), tft.height() - BOXSIZE, BLACK);
        }
        p.x = map(p.x, TS_MINX, TS_MAXX, 0, tft.width());
        p.y = map(p.y, TS_MINY, TS_MAXY, 0, tft.height());
        p.x += 5;
        p.y += 18;
        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);
            }
        }
        if (((p.y - PENRADIUS) > BOXSIZE) && ((p.y + PENRADIUS) < tft.height()))
        {
            tft.fillCircle(p.x, p.y, PENRADIUS, currentcolor);
        }
    }
}

以上。