improve board config setup

board_configs/board_feather_tft.h

@@ -0,0 +1,52 @@
+#ifndef BOARD_FEATHER_TFT_H
+#define BOARD_FEATHER_TFT_H
+
+#include "pico/stdlib.h"
+
+// ============================================================================
+// Adafruit Feather RP2350 with 4.0" TFT ST7796
+// ============================================================================
+
+#define BOARD_NAME "Adafruit Feather RP2350 + 4.0\" TFT ST7796"
+
+// Display Configuration
+#define DISPLAY_WIDTH 480
+#define DISPLAY_HEIGHT 320
+#define DISPLAY_TYPE_SELECTED 0  // DISPLAY_TYPE_ST7796_VAL
+
+// Touch Configuration
+#define TOUCH_TYPE_SELECTED 0  // TOUCH_TYPE_FT6336U_VAL
+#define TOUCH_SWAP_XY true
+#define TOUCH_INVERT_X true
+#define TOUCH_INVERT_Y false
+
+// SPI pins for display - Feather RP2350 with 4.0" TFT
+#define DISPLAY_SPI_PORT spi1
+#define DISPLAY_SCK_PIN  10   // D10 (SCK)
+#define DISPLAY_MOSI_PIN 11   // D11 (MOSI)
+#define DISPLAY_MISO_PIN 20   // Not used for display
+#define DISPLAY_CS_PIN   7    // D13 (CS)
+#define DISPLAY_DC_PIN   4    // D4 (DC)
+#define DISPLAY_RST_PIN  9    // D9 (RST)
+#define DISPLAY_BL_PIN   6    // D6 (Backlight)
+#define DISPLAY_BUSY_PIN -1   // Not used for TFT
+
+// I2C pins for touch - Feather I2C default
+#define TOUCH_I2C_PORT i2c1
+#define TOUCH_SDA_PIN  2
+#define TOUCH_SCL_PIN  3
+#define TOUCH_INT_PIN  25
+#define TOUCH_RST_PIN  28
+
+// SD card pins (shared SPI with display)
+#define SD_SPI_PORT    spi1
+#define SD_CS_PIN      5
+#define SD_MISO_PIN    24
+#define SD_MOSI_PIN    11
+#define SD_SCK_PIN     10
+
+// Common configuration
+#define SPI_BAUDRATE (32 * 1000 * 1000)  // 32 MHz for display
+#define I2C_BAUDRATE (400 * 1000)        // 400 kHz for touch
+
+#endif // BOARD_FEATHER_TFT_H