/*

  u8g_dev_sbn1661_122x32.c

  WG12232 display with 2xSBN1661 / SED1520 controller (122x32 display)
  At the moment only available in the Arduino Environment

  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.

*/

#include "u8g.h"

#define WIDTH 122
#define HEIGHT 32
#define PAGE_HEIGHT 8

static const uint8_t u8g_dev_sbn1661_122x32_init_seq[] PROGMEM = {
  U8G_ESC_CS(0),             // disable chip
  U8G_ESC_ADR(0),           // instruction mode
  U8G_ESC_RST(15),           // do reset low pulse with (15*16)+2 milliseconds
  U8G_ESC_CS(1),             // enable chip 1
  0x0af,        // display on
  0x0c0,        // display start at line 0
  0x0a0,        // a0: ADC forward, a1: ADC reverse
  0x0a9,        // a8: 1/16, a9: 1/32 duty
  U8G_ESC_CS(2),             // enable chip 2
  0x0af,        // display on
  0x0c0,        // display start at line 0
  0x0a0,        // a0: ADC forward, a1: ADC reverse
  0x0a9,        // a8: 1/16, a9: 1/32 duty

  U8G_ESC_CS(0),             // disable chip

  U8G_ESC_END                // end of sequence
};

uint8_t u8g_dev_sbn1661_122x32_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_NONE);
      u8g_WriteEscSeqP(u8g, dev, u8g_dev_sbn1661_122x32_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, 0x0b8 | pb->p.page);   // select current page (SBN1661/SED1520)
      u8g_WriteByte(u8g, dev, 0x000 );   // set X address
      u8g_SetAddress(u8g, dev, 1);             // data mode
      u8g_WriteSequence(u8g, dev, WIDTH / 2, pb->buf);

      u8g_SetAddress(u8g, dev, 0);             // command mode
      u8g_SetChipSelect(u8g, dev, 2);
      u8g_WriteByte(u8g, dev, 0x0b8 | pb->p.page);   // select current page (SBN1661/SED1520)
      u8g_WriteByte(u8g, dev, 0x000 );   // set X address
      u8g_SetAddress(u8g, dev, 1);             // data mode
      u8g_WriteSequence(u8g, dev, WIDTH / 2, WIDTH / 2 + (uint8_t *)pb->buf);

      u8g_SetChipSelect(u8g, dev, 0);

    }
    break;
    case U8G_DEV_MSG_CONTRAST:
      break;
  }
  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_sbn1661_122x32, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_sbn1661_122x32_fn, u8g_com_arduino_no_en_parallel_fn);
