mirror of
https://github.com/YuzuZensai/MCUFRIEND_kbv.git
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142 lines
4.2 KiB
C++
142 lines
4.2 KiB
C++
/* an alternative approach. swap the #if 1 / 0 values to try it
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* how to map for different rotations.
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*/
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#if 0
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#include <Adafruit_GFX.h>
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#include <MCUFRIEND_kbv.h>
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MCUFRIEND_kbv tft;
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#include <TouchScreen.h>
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#define MINPRESSURE 200
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#define MAXPRESSURE 1000
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#define ORIENTATION 1 //change screen rotation
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// ALL Touch panels and wiring is DIFFERENT
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// copy-paste results from TouchScreen_Calibr_native.ino
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const int XP = 6, XM = A2, YP = A1, YM = 7; //ID=0x9341
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const int TS_LEFT = 907, TS_RT = 136, TS_TOP = 942, TS_BOT = 139;
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TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
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// forward declarations
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extern bool update_button(Adafruit_GFX_Button *b, bool down);
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extern bool update_button_list(Adafruit_GFX_Button **pb);
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Adafruit_GFX_Button on_btn, off_btn;
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int pixel_x, pixel_y; //Touch_getXY() updates global vars
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bool Touch_getXY(void)
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{
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TSPoint p = ts.getPoint();
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pinMode(YP, OUTPUT); //restore shared pins
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pinMode(XM, OUTPUT); //because TFT control pins
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bool pressed = (p.z > MINPRESSURE && p.z < MAXPRESSURE);
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if (pressed) {
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switch (tft.getRotation() & 3) {
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// map raw ADC values to pixel coordinates
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// most apps only use a fixed rotation e.g omit unused rotations
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case 0: //PORTRAIT
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pixel_x = map(p.x, TS_LEFT, TS_RT, 0, tft.width());
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pixel_y = map(p.y, TS_TOP, TS_BOT, 0, tft.height());
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break;
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case 1: //LANDSCAPE
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pixel_x = map(p.y, TS_TOP, TS_BOT, 0, tft.width());
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pixel_y = map(p.x, TS_RT, TS_LEFT, 0, tft.height());
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break;
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case 2: //PORTRAIT REV
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pixel_x = map(p.x, TS_RT, TS_LEFT, 0, tft.width());
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pixel_y = map(p.y, TS_BOT, TS_TOP, 0, tft.height());
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break;
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case 3: //LANDSCAPE REV
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pixel_x = map(p.y, TS_BOT, TS_TOP, 0, tft.width());
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pixel_y = map(p.x, TS_LEFT, TS_RT, 0, tft.height());
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break;
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}
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}
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return pressed;
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}
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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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void setup(void)
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{
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#if defined(__arm__) || defined(ESP32) //default to 12-bit ADC
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analogReadResolution(10); //Adafruit TouchScreen.h expects 10-bit
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#endif
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Serial.begin(9600);
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uint16_t ID = tft.readID();
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Serial.print("TFT ID = 0x");
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Serial.println(ID, HEX);
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Serial.println("Calibrate for your Touch Panel");
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if (ID == 0xD3D3) ID = 0x9486; // write-only shield
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tft.begin(ID);
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tft.setRotation(ORIENTATION); // try different rotations
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tft.fillScreen(BLACK);
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on_btn.initButton(&tft, 60, 200, 100, 40, WHITE, CYAN, BLACK, "ON", 2);
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off_btn.initButton(&tft, 180, 200, 100, 40, WHITE, CYAN, BLACK, "OFF", 2);
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on_btn.drawButton(false);
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off_btn.drawButton(false);
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tft.fillRect(40, 80, 160, 80, RED);
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}
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/*
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* updating multiple buttons from a list
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*
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* anything more than two buttons gets repetitive
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*
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* you can place button addresses in separate lists
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* e.g. for separate menu screens
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*/
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// Array of button addresses to behave like a list
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Adafruit_GFX_Button *buttons[] = {&on_btn, &off_btn, NULL};
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/* update the state of a button and redraw as reqd
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*
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* main program can use isPressed(), justPressed() etc
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*/
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bool update_button(Adafruit_GFX_Button *b, bool down)
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{
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b->press(down && b->contains(pixel_x, pixel_y));
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if (b->justReleased())
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b->drawButton(false);
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if (b->justPressed())
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b->drawButton(true);
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return down;
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}
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/* most screens have different sets of buttons
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* life is easier if you process whole list in one go
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*/
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bool update_button_list(Adafruit_GFX_Button **pb)
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{
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bool down = Touch_getXY();
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for (int i = 0 ; pb[i] != NULL; i++) {
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update_button(pb[i], down);
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}
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return down;
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}
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/* compare the simplicity of update_button_list()
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*/
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void loop(void)
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{
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update_button_list(buttons); //use helper function
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if (on_btn.justPressed()) {
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tft.fillRect(40, 80, 160, 80, GREEN);
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}
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if (off_btn.justPressed()) {
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tft.fillRect(40, 80, 160, 80, RED);
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}
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}
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#endif
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