ESP32 i TFT - brak dotyku

[Wiktor2019]

Posiadam wyświetlacz TFT do arduino (kontroler ili9486, biblioteka MCUFRIEND_kb) z arduino działa bardzo dobrze, lecz ja chcę go użyć z esp32. Używam wyświetlacz wraz z wemos d1 uno esp32. Wyświetlanie grafiki działa dobrze lecz gdy chce użyć ekranu dotykowego to odczytuje dotyk lecz nie reaguje na klawisze, które są wyświetlane na ekranie (na arduino działają). A by odczytywało dotyk i dobrze działał wyświetlacz to połączyłem kablami tak jak na poniższym obrazku (bez tego zielonego kabla nie odczytuje dotyku). Dodam też, że kalibracja ekranu działa dobrze poza jednym rogiem ekranu. Poniżej kod jaki wgrywam do esp różni się od tego co wgrywam do arduino tylko pinami od dotyku.

 

#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;       // hard-wired for UNO shields anyway.
#include <TouchScreen.h>
#include <stdint.h>
#include "TouchScreen.h"


char *name = "Please Calibrate.";  //edit name of shield
const int XP=27,XM=15,YP=4,YM=14; //320x480 ID=0x1581
const int TS_LEFT=925,TS_RT=85,TS_TOP=949,TS_BOT=72;
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);
TSPoint tp;

#define MINPRESSURE 200
#define MAXPRESSURE 1000

int16_t BOXSIZE;
int16_t PENRADIUS = 1;
uint16_t ID, oldcolor, currentcolor;
uint8_t Orientation = 0;    //PORTRAIT

// 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

void show_Serial(void)
{
    Serial.println(F("Most Touch Screens use pins 6, 7, A1, A2"));
    Serial.println(F("But they can be in ANY order"));
    Serial.println(F("e.g. right to left or bottom to top"));
    Serial.println(F("or wrong direction"));
    Serial.println(F("Edit name and calibration statements\n"));
    Serial.println(name);
    Serial.print(F("ID=0x"));
    Serial.println(ID, HEX);
    Serial.println("Screen is " + String(tft.width()) + "x" + String(tft.height()));
    Serial.println("Calibration is: ");
    Serial.println("LEFT = " + String(TS_LEFT) + " RT  = " + String(TS_RT));
    Serial.println("TOP  = " + String(TS_TOP)  + " BOT = " + String(TS_BOT));
    Serial.println("Wiring is always PORTRAIT");
    Serial.println("YP=" + String(YP)  + " XM=" + String(XM));
    Serial.println("YM=" + String(YM)  + " XP=" + String(XP));
}

void show_tft(void)
{
    tft.setCursor(0, 0);
    tft.setTextSize(1);
    tft.print(F("ID=0x"));
    tft.println(ID, HEX);
    tft.println("Screen is " + String(tft.width()) + "x" + String(tft.height()));
    tft.println("");
    tft.setTextSize(2);
    tft.println(name);
    tft.setTextSize(1);
    tft.println("PORTRAIT Values:");
    tft.println("LEFT = " + String(TS_LEFT) + " RT  = " + String(TS_RT));
    tft.println("TOP  = " + String(TS_TOP)  + " BOT = " + String(TS_BOT));
    tft.println("\nWiring is: ");
    tft.println("YP=" + String(YP)  + " XM=" + String(XM));
    tft.println("YM=" + String(YM)  + " XP=" + String(XP));
    tft.setTextSize(2);
    tft.setTextColor(RED);
    tft.setCursor((tft.width() - 48) / 2, (tft.height() * 2) / 4);
    tft.print("EXIT");
    tft.setTextColor(YELLOW, BLACK);
    tft.setCursor(0, (tft.height() * 6) / 8);
    tft.print("Touch screen for loc");
    while (1) {
        tp = ts.getPoint();
        pinMode(XM, OUTPUT);
        pinMode(YP, OUTPUT);
        if (tp.z < MINPRESSURE || tp.z > MAXPRESSURE) continue;
        if (tp.x > 450 && tp.x < 570  && tp.y > 450 && tp.y < 570) break;
        tft.setCursor(0, (tft.height() * 3) / 4);
        tft.print("tp.x=" + String(tp.x) + " tp.y=" + String(tp.y) + "   ");
    }
}


void setup(void)
{
    uint16_t tmp;

    tft.reset();
    ID = tft.readID();
    tft.begin(ID);
    Serial.begin(9600);
    show_Serial();
    tft.setRotation(Orientation);
    tft.fillScreen(BLACK);
    show_tft();

    BOXSIZE = tft.width() / 6;
    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.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
    currentcolor = RED;
    delay(1000);
}

void loop()
{
    uint16_t xpos, ypos;  //screen coordinates
    tp = ts.getPoint();   //tp.x, tp.y are ADC values

    // if sharing pins, you'll need to fix the directions of the touchscreen pins
    pinMode(XM, OUTPUT);
    pinMode(YP, OUTPUT);
    // we have some minimum pressure we consider 'valid'
    // pressure of 0 means no pressing!

    if (tp.z > MINPRESSURE && tp.z < MAXPRESSURE) {
        // most mcufriend have touch (with icons) that extends below the TFT
        // screens without icons need to reserve a space for "erase"
        // scale the ADC values from ts.getPoint() to screen values e.g. 0-239
        //
        // Calibration is true for PORTRAIT. tp.y is always long dimension 
        // map to your current pixel orientation
        switch (Orientation) {
            case 0:
                xpos = map(tp.x, TS_LEFT, TS_RT, 0, tft.width());
                ypos = map(tp.y, TS_TOP, TS_BOT, 0, tft.height());
                break;
            case 1:
                xpos = map(tp.y, TS_TOP, TS_BOT, 0, tft.width());
                ypos = map(tp.x, TS_RT, TS_LEFT, 0, tft.height());
                break;
            case 2:
                xpos = map(tp.x, TS_RT, TS_LEFT, 0, tft.width());
                ypos = map(tp.y, TS_BOT, TS_TOP, 0, tft.height());
                break;
            case 3:
                xpos = map(tp.y, TS_BOT, TS_TOP, 0, tft.width());
                ypos = map(tp.x, TS_LEFT, TS_RT, 0, tft.height());
                break;
        }

        // are we in top color box area ?
        if (ypos < BOXSIZE) {               //draw white border on selected color box
            oldcolor = currentcolor;

            if (xpos < BOXSIZE) {
                currentcolor = RED;
                tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
            } else if (xpos < BOXSIZE * 2) {
                currentcolor = YELLOW;
                tft.drawRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, WHITE);
            } else if (xpos < BOXSIZE * 3) {
                currentcolor = GREEN;
                tft.drawRect(BOXSIZE * 2, 0, BOXSIZE, BOXSIZE, WHITE);
            } else if (xpos < BOXSIZE * 4) {
                currentcolor = CYAN;
                tft.drawRect(BOXSIZE * 3, 0, BOXSIZE, BOXSIZE, WHITE);
            } else if (xpos < BOXSIZE * 5) {
                currentcolor = BLUE;
                tft.drawRect(BOXSIZE * 4, 0, BOXSIZE, BOXSIZE, WHITE);
            } else if (xpos < BOXSIZE * 6) {
                currentcolor = MAGENTA;
                tft.drawRect(BOXSIZE * 5, 0, BOXSIZE, BOXSIZE, WHITE);
            }

            if (oldcolor != currentcolor) { //rub out the previous white border
                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);
            }
        }
        // are we in drawing area ?
        if (((ypos - PENRADIUS) > BOXSIZE) && ((ypos + PENRADIUS) < tft.height())) {
            tft.fillCircle(xpos, ypos, PENRADIUS, currentcolor);
        }
        // are we in erase area ?
        // Plain Touch panels use bottom 10 pixels e.g. > h - 10
        // Touch panels with icon area e.g. > h - 0
        if (ypos > tft.height() - 10) {
            // press the bottom of the screen to erase
            tft.fillRect(0, BOXSIZE, tft.width(), tft.height() - BOXSIZE, BLACK);
        }
    }
}