//LED cmd
i2c write 0x50 0x00 0x01
i2c write 0x50 0x02 0x40
i2c write 0x50 0x0D 0x0B
i2c write 0x50 0x10 0x55
i2c write 0x50 0x20 0xF0
i2c write 0x50 0x21 0xFF
i2c write 0x50 0x35 0xFF
i2c write 0x50 0x38 0xFF
i2c write 0x50 0x3B 0xFF
i2c write 0x50 0x3E 0xFF
i2c write 0x50 0x34 0xCC
i2c write 0x50 0x36 0xCC
i2c write 0x50 0x37 0xCC
i2c write 0x50 0x39 0xCC
i2c write 0x50 0x3A 0xCC
i2c write 0x50 0x3C 0xCC
i2c write 0x50 0x3D 0xCC
i2c write 0x50 0x3F 0xCC
//config duty
i2c write 0x50 0x44 0xFF
i2c write 0x50 0x45 0xFF
i2c write 0x50 0x46 0xFF
i2c write 0x50 0x47 0xFF
i2c write 0x50 0x48 0xFF
i2c write 0x50 0x49 0xFF
i2c write 0x50 0x4A 0xFF
i2c write 0x50 0x4B 0xFF
i2c write 0x50 0x4C 0xFF
i2c write 0x50 0x4D 0xFF
i2c write 0x50 0x4E 0xFF
i2c write 0x50 0x4F 0xFF