improve board config setup

board_configs/board_pico2_tft.h

@@ -0,0 +1,52 @@
+#ifndef BOARD_PICO2_TFT_H
+#define BOARD_PICO2_TFT_H
+
+#include "pico/stdlib.h"
+
+// ============================================================================
+// Raspberry Pi Pico 2 with 4.0" TFT ST7796
+// ============================================================================
+
+#define BOARD_NAME "Raspberry Pi Pico 2 + 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 (using SPI0)
+#define DISPLAY_SPI_PORT spi0
+#define DISPLAY_SCK_PIN  2   // GP2
+#define DISPLAY_MOSI_PIN 3   // GP3
+#define DISPLAY_MISO_PIN 4   // GP4
+#define DISPLAY_CS_PIN   5   // GP5
+#define DISPLAY_DC_PIN   6   // GP6
+#define DISPLAY_RST_PIN  7   // GP7
+#define DISPLAY_BL_PIN   8   // GP8
+#define DISPLAY_BUSY_PIN -1  // Not used for TFT
+
+// I2C pins for touch (using I2C0)
+#define TOUCH_I2C_PORT i2c0
+#define TOUCH_SDA_PIN  12  // GP12
+#define TOUCH_SCL_PIN  13  // GP13
+#define TOUCH_INT_PIN  14  // GP14
+#define TOUCH_RST_PIN  15  // GP15
+
+// SD card pins (separate SPI1)
+#define SD_SPI_PORT    spi1
+#define SD_CS_PIN      17  // GP17
+#define SD_MISO_PIN    16  // GP16
+#define SD_MOSI_PIN    19  // GP19
+#define SD_SCK_PIN     18  // GP18
+
+// Common configuration
+#define SPI_BAUDRATE (32 * 1000 * 1000)  // 32 MHz for display
+#define I2C_BAUDRATE (400 * 1000)        // 400 kHz for touch
+
+#endif // BOARD_PICO2_TFT_H