/*

  u8g_dev_pcf8812_96x65.c

  Display: Nokia 96x65

  Universal 8bit Graphics Library

  Copyright (c) 2011, olikraus@gmail.com
  All rights reserved.

  Redistribution and use in source and binary forms, with or without modification,
  are permitted provided that the following conditions are met:

  * Redistributions of source code must retain the above copyright notice, this list
    of conditions and the following disclaimer.

  * Redistributions in binary form must reproduce the above copyright notice, this
    list of conditions and the following disclaimer in the documentation and/or other
    materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

  om6206        comaptible to pcf8812 ?

  Status: Tested

  Display                                               Controller              Seen in
  LPH7366 (9 pins, 84x48)                       PCD8544                Nokia 5110 / 5120 / 5130 / 5160 / 6110 / 6150
  LPH7677 (8 pins, 84x48)                       PCD8544                         Nokia 3210
  LPH7779 (8 pins, 84x48)                       PCD8544                         Nokia 3310 / 3315 / 3330 / 3110, also 3410?
  ???                                                          PCD8544                          Nokia 5110 / 6110
  LPH7690 ?  (96x65)                                 PCF8455/OM6202          Nokia 3410
  LPH7690 ? (96x65?)                               SED1565/S1D15605        Nokia 7110 / 3510?
  LPH7690                                                     ???                                     Nokia 6210

*/

#include "u8g.h"

#define WIDTH 96
#define HEIGHT 65
#define PAGE_HEIGHT 8

static const uint8_t u8g_dev_pcf8812_init_seq[] PROGMEM = {
  U8G_ESC_CS(0),             // disable chip
  U8G_ESC_ADR(0),           // instruction mode
  U8G_ESC_RST(1),           // do reset low pulse with (1*16)+2 milliseconds
  U8G_ESC_CS(1),             // enable chip
  0x021,                    // activate chip (PD=0), horizontal increment (V=0), enter extended command set (H=1)
  0x006,                    // temp. control: b10 = 2
  0x013,                    // bias system 1:48
  0x080 | 0x040,    // medium Vop
  0x020,                    // activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0)
  0x00c,                    // display on, normal operation
  U8G_ESC_DLY(100),       // delay 100 ms
  0x020,                    // activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0)
  0x00d,                    // display on, invert
  U8G_ESC_DLY(100),       // delay 100 ms
  U8G_ESC_DLY(100),       // delay 100 ms
  0x020,                    // activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0)
  0x00c,                    // display on, normal
  U8G_ESC_DLY(100),       // delay 100 ms
  U8G_ESC_CS(0),             // disable chip
  U8G_ESC_END                // end of sequence
};

uint8_t u8g_dev_pcf8812_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) {
  switch (msg) {
    case U8G_DEV_MSG_INIT:
      u8g_InitCom(u8g, dev, U8G_SPI_CLK_CYCLE_400NS);
      u8g_WriteEscSeqP(u8g, dev, u8g_dev_pcf8812_init_seq);
      break;
    case U8G_DEV_MSG_STOP:
      break;
    case U8G_DEV_MSG_PAGE_NEXT: {
      u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
      u8g_SetAddress(u8g, dev, 0);             // command mode
      u8g_SetChipSelect(u8g, dev, 1);
      u8g_WriteByte(u8g, dev, 0x020 );      // activate chip (PD=0), horizontal increment (V=0), enter normal command set (H=0)
      u8g_WriteByte(u8g, dev, 0x080 );                          // set X address
      u8g_WriteByte(u8g, dev, 0x040 | pb->p.page);   // set Y address
      u8g_SetAddress(u8g, dev, 1);             // data mode
      if (u8g_pb_WriteBuffer(pb, u8g, dev) == 0)
        return 0;

      //  mirrored output, not tested
      /*
      {
        uint8_t i = pb->width;
        while( i > 0 )
        {
          i--;
          u8g_WriteByte(u8g, dev, ((unsigned char *)pb->buf)[i] );
        }
      }
      */

      u8g_SetChipSelect(u8g, dev, 0);
    }
    break;
    case U8G_DEV_MSG_CONTRAST:
      // the contrast adjustment does not work, needs to be analysed
      u8g_SetAddress(u8g, dev, 0);          // instruction mode
      u8g_SetChipSelect(u8g, dev, 1);
      u8g_WriteByte(u8g, dev, 0x021);        // command mode, extended function set
      u8g_WriteByte(u8g, dev, 0x080 | ((*(uint8_t *)arg) >> 1 ));
      u8g_SetChipSelect(u8g, dev, 0);
      return 1;
  }
  return u8g_dev_pb8v1_base_fn(u8g, dev, msg, arg);
}

// u8g_com_arduino_sw_spi_fn does not work, too fast???
U8G_PB_DEV(u8g_dev_pcf8812_96x65_sw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_pcf8812_fn, U8G_COM_SW_SPI);
U8G_PB_DEV(u8g_dev_pcf8812_96x65_hw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_pcf8812_fn, U8G_COM_HW_SPI);
