// --- 7. Touchscreen Handling --- // Function to handle touch events void dispenseCup(void); void handleTouch() { uint16_t x, y; if (ts.touched()) { // Check if the touchscreen is being touched TS_Point p = ts.getPoint(); // Get the touch point coordinates using getPoint() // The FT6206 reports raw coordinates. You might need to map them // to your screen resolution and rotation. // For ESP32-2432S028R with tft.setRotation(3) (landscape 320x240), // the raw touch coordinates (typically 240x320 portrait) often need transformation. // Common transformations involve swapping X and Y, and possibly inverting one axis. // For example: // uint16_t mapped_x = map(p.y, 0, 320, 0, tft.width()); // uint16_t mapped_y = map(p.x, 0, 240, 0, tft.height()); // x = mapped_x; // y = tft.height() - mapped_y; // Invert Y if needed after mapping // For now, assigning directly. If touch is unresponsive or misaligned, // uncomment and adjust the mapping lines above based on your testing. x = p.y; // Assign x coordinate from the TS_Point object y = SCREEN_WIDTH - p.x; // Assign y coordinate from the TS_Point object // Debug touch coordinates Serial.print("Raw Touch X: "); Serial.print(p.x); Serial.print(", Raw Y: "); Serial.print(p.y); Serial.print(" -> Mapped Touch X: "); Serial.print(x); Serial.print(", Mapped Y: "); Serial.println(y); switch (currentScreen) { case HOME_SCREEN: // Check for "Settings" button press (180, 180, 120, 40) if (x > 180 && x < (180 + 120) && y > 180 && y < (180 + 40)) { currentScreen = SETTINGS_SCREEN; updateDisplay(); delay(300); // Debounce } break; case RFID_INFO_SCREEN: // Check for "Dispense" button press (10, 190, 140, 40) if (x > 10 && x < (10 + 140) && y > 190 && y < (190 + 40)) { if (lastScannedQuantity > 0) { dispenseCup(); } else { currentScreen = ERROR_SCREEN; drawErrorScreen("Out of cups!"); updateDisplay(); delay(2000); // Show error for 2 seconds currentScreen = RFID_INFO_SCREEN; // Go back to RFID info screen updateDisplay(); } delay(300); // Debounce } // Check for "Back" button press (170, 190, 140, 40) else if (x > 170 && x < (170 + 140) && y > 190 && y < (190 + 40)) { currentScreen = HOME_SCREEN; updateDisplay(); delay(300); // Debounce } break; case ERROR_SCREEN: // Check for "Back to Home" button press (80, 190, 160, 40) if (x > 80 && x < (80 + 160) && y > 190 && y < (190 + 40)) { currentScreen = HOME_SCREEN; updateDisplay(); delay(300); // Debounce } break; case SETTINGS_SCREEN: // Check for "Back" button press (80, 190, 160, 40) if (x > 80 && x < (80 + 160) && y > 190 && y < (190 + 40)) { currentScreen = HOME_SCREEN; updateDisplay(); delay(300); // Debounce } // Add logic for other settings buttons here if implemented // Example: Calibrate Motors (10, 60) else if (x > 10 && x < (10 + 300) && y > 60 && y < (60 + 25)) { // Rough area for "Calibrate Motors" text currentScreen = ERROR_SCREEN; // Using error screen to display a message drawErrorScreen("Calibrate Motors (Not Implemented)"); updateDisplay(); delay(2000); currentScreen = SETTINGS_SCREEN; updateDisplay(); delay(300); } break; } } }