/*
 * ov7670Reg.h
 *
 *  Created on: 2017/08/25
 *      Author: take-iwiw
 */

#ifndef OV7670_OV7670REG_H_
#define OV7670_OV7670REG_H_

#define REG_BATT 0xFF


const uint8_t OV7670_reg[][2] = {
  /* Color mode related */
  {0x12, 0x04},   // QVGA, RGB
  {0x8C, 0x00},   // RGB444 Disable
  {0x40, 0x10 + 0xc0},   // RGB565, 00 - FF
  {0x3A, 0x04 + 8},   // UYVY (why?)
  {0x3D, 0x80 + 0x00},   // gamma enable, UV auto adjust, UYVY
  {0xB0, 0x84}, // important

  /* clock related */
  {0x0C, 0x04},  // DCW enable
  {0x3E, 0x1A},  // manual scaling, pclk/=2
  {0x70, 0x3A},  // scaling_xsc
  {0x71, 0x35},  // scaling_ysc
  {0x72, 0x22}, // down sample by 2
  {0x73, 0xf2}, // DSP clock /= 2

  /* windowing (empirically decided...) */
  {0x17, 0x16},   // HSTART
  {0x18, 0x04},   // HSTOP
  {0x32, 0xA4},   // HREF
  {0x19, 0x02},   // VSTART =  14 ( = 3 * 4 + 2)
  {0x1a, 0x7A},   // VSTOP  = 494 ( = 123 * 4 + 2)
  {0x03, 0xA4},   // VREF (VSTART_LOW = 2, VSTOP_LOW = 2)

  /* color matrix coefficient */
#if 0
  {0x4f, 0xb3},
  {0x50, 0xb3},
  {0x51, 0x00},
  {0x52, 0x3d},
  {0x53, 0xa7},
  {0x54, 0xe4},
  {0x58, 0x9e},
#else
  {0x4f, 0x80},
  {0x50, 0x80},
  {0x51, 0x00},
  {0x52, 0x22},
  {0x53, 0x5e},
  {0x54, 0x80},
  {0x58, 0x9e},
#endif

  /* 3a */
//  {0x13, 0x84},
//  {0x14, 0x0a},   // AGC Ceiling = 2x
//  {0x5F, 0x2f},   // AWB B Gain Range (empirically decided)
//                  // without this bright scene becomes yellow (purple). might be because of color matrix
//  {0x60, 0x98},   // AWB R Gain Range (empirically decided)
//  {0x61, 0x70},   // AWB G Gain Range (empirically decided)
  {0x41, 0x38},   // edge enhancement, de-noise, AWG gain enabled


  /* gamma curve */
#if 1
  {0x7b, 16},
  {0x7c, 30},
  {0x7d, 53},
  {0x7e, 90},
  {0x7f, 105},
  {0x80, 118},
  {0x81, 130},
  {0x82, 140},
  {0x83, 150},
  {0x84, 160},
  {0x85, 180},
  {0x86, 195},
  {0x87, 215},
  {0x88, 230},
  {0x89, 244},
  {0x7a, 16},
#else
  /* gamma = 1 */
  {0x7b, 4},
  {0x7c, 8},
  {0x7d, 16},
  {0x7e, 32},
  {0x7f, 40},
  {0x80, 48},
  {0x81, 56},
  {0x82, 64},
  {0x83, 72},
  {0x84, 80},
  {0x85, 96},
  {0x86, 112},
  {0x87, 144},
  {0x88, 176},
  {0x89, 208},
  {0x7a, 64},
#endif

  /* fps */
//  {0x6B, 0x4a}, //PLL  x4
  {0x11, 0x00}, // pre-scalar = 1/1

  /* others */
  {0x1E, 0x31}, //mirror flip
//  {0x42, 0x08}, // color bar k

  {REG_BATT, REG_BATT},
};


#endif /* OV7670_OV7670REG_H_ */