fix: Correct TFT pins and add I2C power for Reverse TFT board

Fixed pin definitions and display initialization for both Adafruit ESP32-S3
Feather TFT variants based on official Adafruit board definitions.

Pin Corrections (from official Arduino board definitions):
- Normal TFT (adafruit_feather_esp32s3_tft):
  * TFT_CS: 7
  * TFT_DC: 39
  * TFT_RST: 40
  * TFT_BACKLIGHT: 45
  * TFT_I2C_POWER: 21 (NEW - required for display power)

- Reverse TFT (adafruit_feather_esp32s3_reversetft):
  * TFT_CS: 42
  * TFT_DC: 40
  * TFT_RST: 41
  * TFT_BACKLIGHT: 45
  * TFT_I2C_POWER: 7 (NEW - required for display power)

Critical Fix:
- Added TFT_I2C_POWER pin initialization in initializeTFT()
- This pin MUST be set HIGH before initializing the display
- Without this, the display may not work or show garbled output
- Added 10ms delay after power-on for stabilization

Display Configuration:
- Rotation: 1 for normal TFT, 3 for Reverse TFT
- Dimensions: 135x240 pixels (both boards)
- Driver: Adafruit ST7789

Testing:
- Both board variants build successfully
- Normal TFT: Flash 80.5%, RAM 16.2%
- Reverse TFT: Flash 79.1%, RAM 16.2%

References:
- ~/.platformio/packages/framework-arduinoespressif32/variants/adafruit_feather_esp32s3_tft/pins_arduino.h
- ~/.platformio/packages/framework-arduinoespressif32/variants/adafruit_feather_esp32s3_reversetft/pins_arduino.h

Author: arunkumar-mourougappane

lib/TFTDisplay/tft_display.cpp

@@ -33,6 +33,11 @@ static void tftDisplayTask(void* parameter);
 // TFT DISPLAY INITIALIZATION
 // ==========================================
 void initializeTFT() {
+    // Enable TFT I2C power (required for both TFT and Reverse TFT boards)
+    pinMode(TFT_I2C_POWER, OUTPUT);
+    digitalWrite(TFT_I2C_POWER, HIGH);
+    delay(10);  // Wait for power to stabilize
+    
     // Initialize TFT display
     tft = new Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
     tft->init(TFT_WIDTH, TFT_HEIGHT);

lib/TFTDisplay/tft_display.h

@@ -13,16 +13,18 @@
 
 // TFT Display pins - board specific
 #if defined(ARDUINO_ADAFRUIT_FEATHER_ESP32S3_REVERSETFT)
-  // Reverse TFT board pins
+  // Reverse TFT board pins (official Adafruit pinout)
+  #define TFT_I2C_POWER  7
   #define TFT_CS        42
-  #define TFT_DC        40
   #define TFT_RST       41
+  #define TFT_DC        40
   #define TFT_BACKLIGHT 45
 #else
   // Normal TFT board pins (ARDUINO_ADAFRUIT_FEATHER_ESP32S3_TFT)
-  #define TFT_CS        7
-  #define TFT_DC        39
+  #define TFT_I2C_POWER 21
+  #define TFT_CS         7
   #define TFT_RST       40
+  #define TFT_DC        39
   #define TFT_BACKLIGHT 45
 #endif