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#ifndef CUBE_H

#define	CUBE_H

// Cube Parameters

#define CUBE_ROW_COUNT 8

#define CUBE_COLUMN_COUNT 8

#define CUBE_LAYER_COUNT 8

#define CUBE_PIXELS 512

#define CUBE_ROTATIONS 7

#define GCS_REG_SIZE 36

#define GCS_LAYER_SIZE (GCS_REG_SIZE*CUBE_ROW_COUNT)

// Color Definitions

#define RED    0x08F,0x000,0x000

#define ORANGE 0x08F,0x020,0x000

#define YELLOW 0x08F,0x08F,0x000

#define GREEN  0x000,0x08F,0x000

#define TEAL   0x000,0x08F,0x08F

#define BLUE   0x000,0x000,0x08F

#define PURPLE 0x08F,0x000,0x08F

// Control Pin Declarations

#define SFT_D_TRIS TRISBbits.TRISB15

#define SFT_S_TRIS TRISDbits.TRISD5

#define SFT_K_TRIS TRISDbits.TRISD4

#define SFT_R_TRIS TRISBbits.TRISB14

#define SFT_D PORTBbits.RB15

#define SFT_S PORTDbits.RD5

#define SFT_K PORTDbits.RD4

#define SFT_R PORTBbits.RB14

#define GSLAT_TRIS TRISDbits.TRISD9

#define XBLNK_TRIS TRISDbits.TRISD2

#define GSLAT PORTDbits.RD9

#define XBLNK PORTDbits.RD2

// String Overlay Buffer Size

#define CUBE_STRING_MAX_LENGTH 32

// Data Streaming In Buffer Size

#define CUBE_FRAME_BUFFER_SIZE 3000

#define CUBE_START_CHAR  0x7E

#define CUBE_ESCAPE_CHAR 0x7D

#define CUBE_ESCAPE_XOR  0x20

// Data Streaming In Command Set

#define CUBE_COMMAND_SET_BC         0x0A // [Brightness Value]

#define CUBE_COMMAND_CLEAR          0x0B // (no data)

#define CUBE_COMMAND_SET_PIXEL      0x10 // [Layer, Row, Column, R, G, B]

#define CUBE_COMMAND_SET_ALL        0x11 // [R1, G1, B1, R2, ...]

#define CUBE_COMMAND_START_TEXT     0x20 // [R, G, B, Char1, Char2, Char3, ...]

#define CUBE_COMMAND_STOP_TEXT      0x21 // (no data)

typedef enum {

    IDLE,

    READ_LENGTH_MSB,

    READ_LENGTH_LSB,

    READ_COMMAND,

    READ_DATA,

    READ_CHECKSUM

} PROCESS_STATE;

typedef struct {

    // Variables for base cube

    uint8_t GCS[CUBE_LAYER_COUNT][GCS_LAYER_SIZE];

    uint8_t GCS_OVERLAY[CUBE_LAYER_COUNT][GCS_LAYER_SIZE];

    uint8_t GCS_WRITE[CUBE_LAYER_COUNT][GCS_LAYER_SIZE];

    uint8_t current_layer;

    uint8_t rotation_counter;

    // Variables for the scrolling text

    uint8_t string[CUBE_STRING_MAX_LENGTH];

    uint8_t string_length;

    uint8_t string_index;

    uint8_t string_line;

    uint16_t string_R, string_G, string_B;

    // Variables for input frame data

    PROCESS_STATE frame_state;

    uint8_t frame_buffer[CUBE_FRAME_BUFFER_SIZE];

    uint8_t frame_checksum;

    uint32_t frame_length;

    uint32_t frame_index;

    uint32_t frame_command;

    uint32_t frame_escape;

} CUBE_DATA;

void Cube_Init(CUBE_DATA *data, uint8_t BC);

void Cube_Timer_Interrupt(void);

// Callbacks on completion of DCS/GCS writes

void Cube_DCS_Write_Callback(void);

void Cube_GCS_Write_Callback(void);

// Cube control functions

void Cube_Write_DCS(uint8_t BC);

void Cube_Clear(void);

void Cube_Set_All(uint16_t R, uint16_t G, uint16_t B);

void Cube_Set_Layer(uint8_t layer, uint16_t R, uint16_t G, uint16_t B);

void Cube_Set_Pixel(uint8_t layer, uint8_t row, uint8_t column, uint16_t R, uint16_t G, uint16_t B);

void Cube_Get_Pixel(uint8_t layer, uint8_t row, uint8_t column, uint16_t* R, uint16_t* G, uint16_t* B);

void Cube_Move_Pixel(uint8_t layer1, uint8_t row1, uint8_t column1, uint8_t layer2, uint8_t row2, uint8_t column2);

void Cube_Rotate_Shell(uint8_t shell, uint8_t direction);

void Cube_Rotate(uint8_t direction);

// Overlay control functions

void Cube_Overlay_Clear(void);

void Cube_Overlay_Set_Pixel(uint8_t layer, uint8_t row, uint8_t column, uint16_t R, uint16_t G, uint16_t B);

void Cube_Overlay_Get_Pixel(uint8_t layer, uint8_t row, uint8_t column, uint16_t* R, uint16_t* G, uint16_t* B);

void Cube_Overlay_Move_Pixel(uint8_t layer1, uint8_t row1, uint8_t column1, uint8_t layer2, uint8_t row2, uint8_t column2);

void Cube_Overlay_Rotate_Shell(uint8_t shell, uint8_t direction);

// Text control functions

void Cube_Text_Init(uint8_t *string, uint8_t length, uint16_t R, uint16_t G, uint16_t B);

void Cube_Text_Interrupt(void);

// Data stream in control functions

void Cube_Data_In(uint8_t c);

void Cube_Data_In_Process_Frame(void);

void Cube_Data_Direct_Write_All(uint8_t *buffer);

#endif	/* CUBE_H */