/*
 * Digital_Light_TSL2561.h
 * A library for TSL2561
 *
 * Copyright (c) 2012 seeed technology inc.
 * Website    : www.seeed.cc
 * Author     : zhangkun
 * Create Time:
 * Change Log :
 *
 * The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#ifndef Digital_Light_TSL2561_H
#define Digital_Light_TSL2561_H

#include <Arduino.h>

#define  TSL2561_Control  0x80
#define  TSL2561_Timing   0x81
#define  TSL2561_Interrupt 0x86
#define  TSL2561_Channal0L 0x8C
#define  TSL2561_Channal0H 0x8D
#define  TSL2561_Channal1L 0x8E
#define  TSL2561_Channal1H 0x8F

#define TSL2561_Address  0x29       //device address

#define LUX_SCALE 14           // scale by 2^14
#define RATIO_SCALE 9          // scale ratio by 2^9
#define CH_SCALE 10            // scale channel values by 2^10
#define CHSCALE_TINT0 0x7517   // 322/11 * 2^CH_SCALE
#define CHSCALE_TINT1 0x0fe7   // 322/81 * 2^CH_SCALE

#define K1T 0x0040   // 0.125 * 2^RATIO_SCALE
#define B1T 0x01f2   // 0.0304 * 2^LUX_SCALE
#define M1T 0x01be   // 0.0272 * 2^LUX_SCALE
#define K2T 0x0080   // 0.250 * 2^RATIO_SCA
#define B2T 0x0214   // 0.0325 * 2^LUX_SCALE
#define M2T 0x02d1   // 0.0440 * 2^LUX_SCALE
#define K3T 0x00c0   // 0.375 * 2^RATIO_SCALE
#define B3T 0x023f   // 0.0351 * 2^LUX_SCALE
#define M3T 0x037b   // 0.0544 * 2^LUX_SCALE
#define K4T 0x0100   // 0.50 * 2^RATIO_SCALE
#define B4T 0x0270   // 0.0381 * 2^LUX_SCALE
#define M4T 0x03fe   // 0.0624 * 2^LUX_SCALE
#define K5T 0x0138   // 0.61 * 2^RATIO_SCALE
#define B5T 0x016f   // 0.0224 * 2^LUX_SCALE
#define M5T 0x01fc   // 0.0310 * 2^LUX_SCALE
#define K6T 0x019a   // 0.80 * 2^RATIO_SCALE
#define B6T 0x00d2   // 0.0128 * 2^LUX_SCALE
#define M6T 0x00fb   // 0.0153 * 2^LUX_SCALE
#define K7T 0x029a   // 1.3 * 2^RATIO_SCALE
#define B7T 0x0018   // 0.00146 * 2^LUX_SCALE
#define M7T 0x0012   // 0.00112 * 2^LUX_SCALE
#define K8T 0x029a   // 1.3 * 2^RATIO_SCALE
#define B8T 0x0000   // 0.000 * 2^LUX_SCALE
#define M8T 0x0000   // 0.000 * 2^LUX_SCALE



#define K1C 0x0043   // 0.130 * 2^RATIO_SCALE
#define B1C 0x0204   // 0.0315 * 2^LUX_SCALE
#define M1C 0x01ad   // 0.0262 * 2^LUX_SCALE
#define K2C 0x0085   // 0.260 * 2^RATIO_SCALE
#define B2C 0x0228   // 0.0337 * 2^LUX_SCALE
#define M2C 0x02c1   // 0.0430 * 2^LUX_SCALE
#define K3C 0x00c8   // 0.390 * 2^RATIO_SCALE
#define B3C 0x0253   // 0.0363 * 2^LUX_SCALE
#define M3C 0x0363   // 0.0529 * 2^LUX_SCALE
#define K4C 0x010a   // 0.520 * 2^RATIO_SCALE
#define B4C 0x0282   // 0.0392 * 2^LUX_SCALE
#define M4C 0x03df   // 0.0605 * 2^LUX_SCALE
#define K5C 0x014d   // 0.65 * 2^RATIO_SCALE
#define B5C 0x0177   // 0.0229 * 2^LUX_SCALE
#define M5C 0x01dd   // 0.0291 * 2^LUX_SCALE
#define K6C 0x019a   // 0.80 * 2^RATIO_SCALE
#define B6C 0x0101   // 0.0157 * 2^LUX_SCALE
#define M6C 0x0127   // 0.0180 * 2^LUX_SCALE
#define K7C 0x029a   // 1.3 * 2^RATIO_SCALE
#define B7C 0x0037   // 0.00338 * 2^LUX_SCALE
#define M7C 0x002b   // 0.00260 * 2^LUX_SCALE
#define K8C 0x029a   // 1.3 * 2^RATIO_SCALE
#define B8C 0x0000   // 0.000 * 2^LUX_SCALE
#define M8C 0x0000   // 0.000 * 2^LUX_SCALE
class TSL2561_CalculateLux
{
 public:
  signed long readVisibleLux();
  unsigned long calculateLux(unsigned int iGain, unsigned int tInt,int iType);
  void getLux(void);
  void init(void);
  uint8_t readRegister(int deviceAddress, int address);
  void writeRegister(int deviceAddress, int address, uint8_t val);
 private:
  uint8_t CH0_LOW,CH0_HIGH,CH1_LOW,CH1_HIGH;
  uint16_t ch0,ch1;
  unsigned long chScale;
  unsigned long channel1;
  unsigned long channel0;
  unsigned long  ratio1;
  unsigned int b;
  unsigned int m;
  unsigned long temp;
  unsigned long lux;

 };
extern TSL2561_CalculateLux  TSL2561;
#endif