BargraphLED/BargraphLED.h at master · cfunseth/BargraphLED · GitHub

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/**********************************************************************
 *
 * This is the library for the BL28 LED bargraph module
 *
 * Original HT16K33 source code: https://github.com/jonpearse/ht16k33-arduino
 *
 **********************************************************************/
#ifndef BargraphLED_h
  #define BargraphLED_h

  // include appropriate version of Arduino code
  #if (ARDUINO >= 100)
    #include "Arduino.h"
  #else
    #include "WProgram.h"
  #endif

  // include Wire for I2C comms
  #include <Wire.h>

  // different commands
  #define HT16K33_CMD_RAM     0x00
  #define HT16K33_CMD_KEYS    0x40
  #define HT16K33_CMD_SETUP   0x80
  #define HT16K33_CMD_ROWINT  0xA0
  #define HT16K33_CMD_DIMMING 0xE0

  // other options
  #define HT16K33_DISPLAY_OFF 0x00
  #define HT16K33_DISPLAY_ON  0x01
  #define HT16K33_BLINK_OFF   0x00
  #define HT16K33_BLINK_1HZ   0x02
  #define HT16K33_BLINK_2HZ   0x04
  #define HT16K33_BLINK_0HZ5  0x06

  // bargraph options
  #define BARGRAPH_SIZE       28

  // actual class
  class BargraphLED
  {
    public:
      void init(uint8_t addr);

      // brightness control
      void setBrightness(uint8_t brightness);

      // blink controls
      void setBlink(uint8_t blink);

      // buffer stuff
      void clear(void);
      void setPixel(uint8_t row, uint8_t col, uint8_t onff);

      // read/write
      void write(void);

      // bargraph functions
      void setSegment(uint8_t pos, uint8_t value);
      uint8_t size(void);

    private:
      uint16_t *_buffer;
      uint8_t  _i2c_addr;

      void writeRow(uint8_t col);
  };

#endif