/**
 * @file    gc9a01.h
 * @brief   Driver GC9A01 pour STM32 (HAL)
 * @date    09 août 2025
 * @author  Lorent
 */


#ifndef INC_GC9A01_H_
#define INC_GC9A01_H_

#include "main.h"
#include <stdint.h>
#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

#define PIX_BUF 512


//==============================================================================
// 📌 Configuration matérielle
//==============================================================================

// Chip Select (CS)
#define GC9A01_CS_GPIO_Port     GPIOB
#define GC9A01_CS_Pin           GPIO_PIN_0

// Data/Command (DC)
#define GC9A01_DC_GPIO_Port     GPIOB
#define GC9A01_DC_Pin           GPIO_PIN_1

// Reset (RST)
#define GC9A01_RST_GPIO_Port    GPIOB
#define GC9A01_RST_Pin          GPIO_PIN_2

// Dimensions écran
#define GC9A01_WIDTH            240
#define GC9A01_HEIGHT           240
#define GC9A01_RADIUS           (GC9A01_WIDTH / 2)

//==============================================================================
// 🎨 Couleurs (format RGB565)
//==============================================================================
#define GC9A01_BLACK            0x0000
#define GC9A01_WHITE            0xFFFF
#define GC9A01_RED              0xF800
#define GC9A01_GREEN            0x07E0
#define GC9A01_BLUE             0x001F
#define GC9A01_CYAN             0x07FF
#define GC9A01_MAGENTA          0xF81F
#define GC9A01_YELLOW           0xFFE0
#define GC9A01_ORANGE           0xFD20
#define GC9A01_DARKGREEN        0x03E0
#define GC9A01_DARKBLUE         0x0010
#define GC9A01_GRAY             0x8410
#define GC9A01_LIGHTGRAY        0xC618

//==============================================================================
// 📜 Commandes GC9A01
//==============================================================================
#define GC9A01_SWRESET          0x01
#define GC9A01_RDDID            0x04
#define GC9A01_RDDST            0x09
#define GC9A01_SLPIN            0x10
#define GC9A01_SLPOUT           0x11
#define GC9A01_NORON            0x13
#define GC9A01_INVOFF           0x20
#define GC9A01_INVON            0x21
#define GC9A01_DISPOFF          0x28
#define GC9A01_DISPON           0x29
#define GC9A01_CASET            0x2A
#define GC9A01_RASET            0x2B
#define GC9A01_RAMWR            0x2C
#define GC9A01_RAMRD            0x2E
#define GC9A01_COLMOD           0x3A
#define GC9A01_MADCTL           0x36
#define GC9A01_PWCTR1           0xC1
#define GC9A01_PWCTR2           0xC3
#define GC9A01_PWCTR3           0xC4
#define GC9A01_PWCTR4           0xC9
#define GC9A01_FRAMERATE        0xE8
#define GC9A01_GAMMA1           0xF0
#define GC9A01_GAMMA2           0xF1
#define GC9A01_GAMMA3           0xF2
#define GC9A01_GAMMA4           0xF3

//==============================================================================
// 📦 Structures
//==============================================================================
typedef struct {
    uint16_t x;
    uint16_t y;
} GC9A01_Point_t;

typedef struct {
    uint16_t x;
    uint16_t y;
    uint16_t width;
    uint16_t height;
} GC9A01_Rect_t;

typedef struct {
    uint16_t x;
    uint16_t y;
    uint8_t radius;
    uint16_t color;
} GC9A01_Circle_t;

//==============================================================================
// 🔹 Fonctions publiques
//==============================================================================

// Initialisation
void     GC9A01_Init(SPI_HandleTypeDef *hspi);
void     GC9A01_Reset(void);
void     GC9A01_DisplayOn(void);
void     GC9A01_DisplayOff(void);
void     GC9A01_SetRotation(uint8_t rotation);

// Dessin basique
void     GC9A01_FillScreen(uint16_t color);
void     GC9A01_SetPixel(uint16_t x, uint16_t y, uint16_t color);
void     GC9A01_DrawLine(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color);
void     GC9A01_DrawRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color);
void     GC9A01_FillRect(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint16_t color);
void     GC9A01_DrawCircle(uint16_t x, uint16_t y, uint8_t radius, uint16_t color);
void     GC9A01_FillCircle(uint16_t x, uint16_t y, uint8_t radius, uint16_t color);

// Texte
void     GC9A01_DrawChar(uint16_t x, uint16_t y, char c, uint16_t color, uint16_t bg_color, uint8_t size);
void     GC9A01_DrawString(uint16_t x, uint16_t y, const char *str, uint16_t color, uint16_t bg_color, uint8_t size);

// Utilitaires
uint16_t GC9A01_RGB565(uint8_t r, uint8_t g, uint8_t b);
bool     GC9A01_IsInCircle(uint16_t x, uint16_t y);

// Fonctions spécifiques moto
void     GC9A01_DrawGauge(uint16_t center_x, uint16_t center_y, uint8_t radius,
                          float value, float min_val, float max_val,
                          uint16_t color, const char* label);
void     GC9A01_DrawAngleIndicator(float roll, float pitch);
void     GC9A01_DrawStateIndicator(const char* state, uint16_t color);

#ifdef __cplusplus
}
#endif

#endif // GC9A01_H