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#ifndef LED_BACKPACK_H
#define LED_BACKPACK_H

#define HT16K33_BLINK_CMD 0x80
#define HT16K33_BLINK_DISPLAYON 0x01
#define HT16K33_BLINK_OFF 0
#define HT16K33_BLINK_2HZ  1
#define HT16K33_BLINK_1HZ  2
#define HT16K33_BLINK_HALFHZ  3

#define HT16K33_CMD_BRIGHTNESS 0x0E

typedef struct {
    unsigned char i2c_address;
    unsigned char display_buffer[17];
} LED_DATA;

void LED_Init(void);
void LED_Start(void);
void LED_setBrightness(unsigned char c);
void LED_blinkRate(unsigned char c);
void LED_writeDisplay(void);
void LED_clear(void);
void LED_drawColon(unsigned char c);
void LED_writeDigitRaw(unsigned char loc, unsigned char bitmask);
void LED_writeDigitNum(unsigned char loc, unsigned char num, unsigned char dot);
void LED_writeDigitAlpha(unsigned char loc, unsigned char alpha, unsigned char dot);
void LED_writeNum(unsigned int i);


#endif  /* LED_BACKPACK_H */