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witnessmenow / ESP32-Cheap-Yellow-Display

Building a community around a cheap ESP32 Display with a touch screen

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how to get button clicks recognised

Bazza1959 opened this issue · comments

commented

can anyone help me, I have tried both of the following
void loop() {
// Check for button presses
int touchX, touchY;
if (tft.getTouchRaw(&touchX, &touchY)) {
int btnIndex = touchX / (TFT_WIDTH / NUM_BUTTONS);
if (btnIndex >= 0 && btnIndex < NUM_BUTTONS) {
btnClickHandlersbtnIndex;
}
}
and also
void loop() {
// Check for button presses
if (tft.getTouch(&touchX, &touchY)) {
int btnIndex = touchX / (TFT_WIDTH / NUM_BUTTONS);
if (btnIndex >= 0 && btnIndex < NUM_BUTTONS) {
btnClickHandlersbtnIndex;
}
}
}
and get the following error when compiling

no matching function for call to 'TFT_eSPI: :getTouch (int*, int*)
and this one
no matching function for call to 'TFT_eSPI: :getTouchRaw (int*, int*)

BTW the code is being written by ChatGPT and is as follows

#include <WiFi.h>
#include <WiFiClient.h>
#include <TFT_eSPI.h>

#define TFT_WIDTH 800
#define TFT_HEIGHT 480

TFT_eSPI tft = TFT_eSPI(); // Initialize the display

// Button positions
#define BTN_WIDTH 150
#define BTN_HEIGHT 50
#define BTN_MARGIN 20
#define BTN_START_X 50
#define BTN_START_Y 50

// Button colors
#define BTN_COLOR 0x7E0 // Green
#define BTN_TEXT_COLOR TFT_WHITE

// Button variables
#define NUM_BUTTONS 4
const char *buttonLabels[NUM_BUTTONS] = {"Homing", "Speed +", "Speed -", "Start"};
const uint16_t buttonColors[NUM_BUTTONS] = {TFT_RED, TFT_BLUE, TFT_BLUE, TFT_GREEN};
const uint16_t buttonTextColor[NUM_BUTTONS] = {TFT_WHITE, TFT_WHITE, TFT_WHITE, TFT_BLACK};

// WiFi credentials
const char *ssid = "YourWiFiSSID";
const char *password = "YourWiFiPassword";

WiFiServer server(80);

// Button click handlers
void btnHomingClicked() {
// Handle homing button click
Serial.println("Homing button clicked");
}

void btnSpeedIncClicked() {
// Handle speed increase button click
Serial.println("Speed increase button clicked");
}

void btnSpeedDecClicked() {
// Handle speed decrease button click
Serial.println("Speed decrease button clicked");
}

void btnStartClicked() {
// Handle start button click
Serial.println("Start button clicked");
}

// Button click handlers array
void (*btnClickHandlers[NUM_BUTTONS])() = {btnHomingClicked, btnSpeedIncClicked, btnSpeedDecClicked, btnStartClicked};

void setup() {
Serial.begin(115200);

// Initialize TFT display
tft.begin();
tft.setRotation(3); // Adjust display rotation if needed
tft.fillScreen(TFT_BLACK);

// Draw buttons
for (int i = 0; i < NUM_BUTTONS; i++) {
    int btnX = BTN_START_X;
    int btnY = BTN_START_Y + (BTN_HEIGHT + BTN_MARGIN) * i;
    tft.fillRect(btnX, btnY, BTN_WIDTH, BTN_HEIGHT, buttonColors[i]);
    tft.drawRect(btnX, btnY, BTN_WIDTH, BTN_HEIGHT, TFT_WHITE);
    tft.setTextColor(buttonTextColor[i]);
    tft.setTextSize(2);
    tft.setTextDatum(MC_DATUM);
    tft.drawString(buttonLabels[i], btnX + BTN_WIDTH / 2, btnY + BTN_HEIGHT / 2);
}

// Connect to WiFi network
WiFi.begin(ssid, password);
Serial.print("Connecting to WiFi");
while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
}
Serial.println("WiFi connected");

// Start server
server.begin();

}

void loop() {
// Check for button presses
int touchX, touchY;
if (tft.getTouchRaw(&touchX, &touchY)) {
int btnIndex = touchX / (TFT_WIDTH / NUM_BUTTONS);
if (btnIndex >= 0 && btnIndex < NUM_BUTTONS) {
btnClickHandlersbtnIndex;
}
}
}