#ifndef LCD_DRIVER_H
#define LCD_DRIVER_H

#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_vendor.h"
#include "driver/spi_master.h"
#include "driver/gpio.h"
#include "esp_err.h"

// ============ 引脚配置 (根据实际硬件修改) ============
#define LCD_PIN_NUM_MOSI    7    // SPI MOSI
#define LCD_PIN_NUM_SCLK    6    // SPI SCLK
#define LCD_PIN_NUM_CS      5    // 片选
#define LCD_PIN_NUM_DC      4    // 数据/命令选择
#define LCD_PIN_NUM_RST     3    // 复位
#define LCD_PIN_NUM_BCKL    2    // 背光控制

// ============ 屏幕参数 ============
#define LCD_H_RES           240  // 水平分辨率
#define LCD_V_RES           240  // 垂直分辨率
#define LCD_BIT_PER_PIXEL   16   // 16位色深 (RGB565)

// ============ SPI配置 ============
#define LCD_SPI_HOST        SPI2_HOST
#define LCD_SPI_SPEED_HZ    (80 * 1000 * 1000)  // 80MHz

// ============ 屏幕类型 ============
typedef enum {
    LCD_TYPE_ST7789,
    LCD_TYPE_ILI9341,
    LCD_TYPE_GC9A01
} lcd_type_t;

// ============ 驱动句柄 ============
typedef struct {
    spi_device_handle_t spi_handle;
    esp_lcd_panel_handle_t panel_handle;
    gpio_num_t cs_gpio;
    gpio_num_t dc_gpio;
    gpio_num_t rst_gpio;
    gpio_num_t bckl_gpio;
    lcd_type_t type;
} lcd_driver_t;

// ============ 函数声明 ============
esp_err_t lcd_driver_init(lcd_driver_t *lcd, lcd_type_t type);
esp_err_t lcd_driver_deinit(lcd_driver_t *lcd);
esp_err_t lcd_draw_pixel(lcd_driver_t *lcd, uint16_t x, uint16_t y, uint16_t color);
esp_err_t lcd_fill_rect(lcd_driver_t *lcd, uint16_t x, uint16_t y, 
                        uint16_t w, uint16_t h, uint16_t color);
esp_err_t lcd_draw_image(lcd_driver_t *lcd, uint16_t x, uint16_t y, 
                         uint16_t w, uint16_t h, const uint16_t *data);
esp_err_t lcd_set_rotation(lcd_driver_t *lcd, uint8_t rotation);
esp_err_t lcd_set_backlight(lcd_driver_t *lcd, uint8_t brightness);

// ============ 颜色宏 ============
#define COLOR_BLACK       0x0000
#define COLOR_WHITE       0xFFFF
#define COLOR_RED         0xF800
#define COLOR_GREEN       0x07E0
#define COLOR_BLUE        0x001F
#define COLOR_YELLOW      0xFFE0
#define COLOR_CYAN        0x07FF
#define COLOR_MAGENTA     0xF81F
#define COLOR_GRAY        0x8410

// RGB565转换宏
#define RGB565(r, g, b)  (((r & 0xF8) << 8) | ((g & 0xFC) << 3) | ((b & 0xF8) >> 3))

#endif // LCD_DRIVER_H