#include <Wire.h>

#define CMD_DISP_ON     0x01
#define CMD_DISP_OFF    0x02
#define CMD_DOT_ON      0x03
#define CMD_DOT_OFF     0x04
#define CMD_SET_DUTY    0x05
#define CMD_SET_TRANS   0x06

#define TRANSITION_NONE         0
#define TRANSITION_TYPHOON      1
#define TRANSITION_FADE         2
#define TRANSITION_CROSS_FADE   3

byte dev_addr = 0x41;

void setup()
{
  Wire.begin();
}

void loop()
{
  for ( byte trns = TRANSITION_NONE; trns <= TRANSITION_CROSS_FADE; trns++)
  {
    setTransition(dev_addr, trns);
    setDuty(dev_addr, 255);
    dotOff(dev_addr);
    dispOn(dev_addr, 'I');
    delay(1000);
    dispOn(dev_addr, 'Q');
    delay(1000);
    dotOn(dev_addr);
    setDuty(dev_addr, 127);
    dispOn(dev_addr, 'c');
    delay(1000);
    dispOn(dev_addr, 'o');
    delay(1000);
    dispOn(dev_addr, 'm');
    delay(1000);
  }
}

///////////////////

void setDuty(byte address, byte duty)
{
  Wire.beginTransmission(address);
  byte data[2] = { CMD_SET_DUTY, duty };
  Wire.write(data, 2);
  Wire.endTransmission();
}
void setTransition(byte address, byte transition)
{
  Wire.beginTransmission(address);
  byte data[2] = { CMD_SET_TRANS, transition };
  Wire.write(data, 2);
  Wire.endTransmission();
}
void dispOn(byte address, byte disp)
{
  Wire.beginTransmission(address);
  byte data[2] = { CMD_DISP_ON, disp };
  Wire.write(data, 2);
  Wire.endTransmission();
}
void dispOff(byte address)
{
  Wire.beginTransmission(address);
  Wire.write(CMD_DISP_OFF);
  Wire.endTransmission();
}
void dotOn(byte address)
{
  Wire.beginTransmission(address);
  Wire.write(CMD_DOT_ON);
  Wire.endTransmission();
}
void dotOff(byte address)
{
  Wire.beginTransmission(address);
  Wire.write(CMD_DOT_OFF);
  Wire.endTransmission();
}