/*

  u8g_dev_uc1608_240x64.c

  Universal 8bit Graphics Library

  Copyright (c) 2013, 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 240
#define HEIGHT 64
#define PAGE_HEIGHT 8

// see also ERC24064-1 for init sequence example
static const uint8_t u8g_dev_uc1608_240x64_init_seq[] PROGMEM = {
  U8G_ESC_CS(1),             // disable chip (UC1608 has positive logic for CS)
  U8G_ESC_ADR(0),           // instruction mode
  U8G_ESC_RST(1),           // do reset low pulse with (15*16)+2 milliseconds

  U8G_ESC_CS(0),             // enable chip
  0x0e2,                // soft reset

  U8G_ESC_DLY(100),       // delay 100 ms
  U8G_ESC_DLY(100),       // delay 100 ms
  #if HEIGHT <= 96
    0x023,      // Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128
  #else
    // 30 Nov 2013: not tested
    0x027,      // Bit 0/1: Temp compenstation, Bit 2: Multiplex Rate 0=96, 1=128
  #endif
  0x0c8,                    // Map control, Bit 3: MY=1, Bit 2: MX=0, Bit 0: MSF =0
  0x0e8,                    // LCD bias Bits 0/1: 00=10.7 01=10.3, 10=12.0, 11=12.7

  0x081,                    // set contrast (bits 0..5) and gain (bits 6/7)
  0x014,                    // ECR24064-1 default: 0x040

  0x02f,                    // power on, Bit 2 PC2=1 (internal charge pump), Bits 0/1: cap of panel
  U8G_ESC_DLY(50),         // delay 50 ms

  0x040,                    // set display start line to 0
  0x090,                    // no fixed lines
  0x089,                    // RAM access control

  0x0af,                    // disable sleep mode
  0x0a4,                    // normal display
  0x0a5,                    // display all points, ST7565, UC1610
  U8G_ESC_DLY(100),       // delay 100 ms
  0x0a4,                    // normal display
  U8G_ESC_CS(1),             // disable chip
  U8G_ESC_END                // end of sequence
};

static const uint8_t u8g_dev_uc1608_240x64_data_start[] PROGMEM = {
  U8G_ESC_ADR(0),           // instruction mode
  U8G_ESC_CS(0),             // enable chip
  0x010,    // set upper 4 bit of the col adr to 0 (UC1608)
  0x000,    // set lower 4 bit of the col adr to 0
  U8G_ESC_END                // end of sequence
};

uint8_t u8g_dev_uc1608_240x64_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_300NS);
      u8g_WriteEscSeqP(u8g, dev, u8g_dev_uc1608_240x64_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_WriteEscSeqP(u8g, dev, u8g_dev_uc1608_240x64_data_start);
      u8g_WriteByte(u8g, dev, 0x0b0 | pb->p.page);   // select current page (UC1608)
      u8g_SetAddress(u8g, dev, 1);             // data mode
      if (u8g_pb_WriteBuffer(pb, u8g, dev) == 0)
        return 0;
      u8g_SetChipSelect(u8g, dev, 1);
    }
    break;
    case U8G_DEV_MSG_CONTRAST:
      u8g_SetChipSelect(u8g, dev, 0);
      u8g_SetAddress(u8g, dev, 0);          // instruction mode
      u8g_WriteByte(u8g, dev, 0x081);
      u8g_WriteByte(u8g, dev, (*(uint8_t *)arg) >> 2);  // set contrast from, keep gain at 0
      u8g_SetChipSelect(u8g, dev, 1);
      return 1;
  }
  return u8g_dev_pb8v1_base_fn(u8g, dev, msg, arg);
}

uint8_t u8g_dev_uc1608_240x64_2x_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_300NS);
      u8g_WriteEscSeqP(u8g, dev, u8g_dev_uc1608_240x64_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_WriteEscSeqP(u8g, dev, u8g_dev_uc1608_240x64_data_start);
      u8g_WriteByte(u8g, dev, 0x0b0 | (2 * pb->p.page)); // select current page (ST7565R)
      u8g_SetAddress(u8g, dev, 1);             // data mode
      u8g_WriteSequence(u8g, dev, pb->width, pb->buf);
      u8g_SetChipSelect(u8g, dev, 0);

      u8g_WriteEscSeqP(u8g, dev, u8g_dev_uc1608_240x64_data_start);
      u8g_WriteByte(u8g, dev, 0x0b0 | (2 * pb->p.page + 1)); // select current page (ST7565R)
      u8g_SetAddress(u8g, dev, 1);             // data mode
      u8g_WriteSequence(u8g, dev, pb->width, (uint8_t *)(pb->buf) + pb->width);
      u8g_SetChipSelect(u8g, dev, 0);
    }
    break;
    case U8G_DEV_MSG_CONTRAST:
      u8g_SetChipSelect(u8g, dev, 1);
      u8g_SetAddress(u8g, dev, 0);          // instruction mode
      u8g_WriteByte(u8g, dev, 0x081);
      u8g_WriteByte(u8g, dev, (*(uint8_t *)arg) >> 2);
      u8g_SetChipSelect(u8g, dev, 0);
      return 1;
  }
  return u8g_dev_pb16v1_base_fn(u8g, dev, msg, arg);
}

U8G_PB_DEV(u8g_dev_uc1608_240x64_sw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_uc1608_240x64_fn, U8G_COM_SW_SPI);
U8G_PB_DEV(u8g_dev_uc1608_240x64_hw_spi, WIDTH, HEIGHT, PAGE_HEIGHT, u8g_dev_uc1608_240x64_fn, U8G_COM_HW_SPI);

uint8_t u8g_dev_uc1608_240x64_2x_buf[WIDTH * 2] U8G_NOCOMMON;
u8g_pb_t u8g_dev_uc1608_240x64_2x_pb = { {16, HEIGHT, 0, 0, 0},  WIDTH, u8g_dev_uc1608_240x64_2x_buf};
u8g_dev_t u8g_dev_uc1608_240x64_2x_sw_spi = { u8g_dev_uc1608_240x64_2x_fn, &u8g_dev_uc1608_240x64_2x_pb, U8G_COM_SW_SPI };
u8g_dev_t u8g_dev_uc1608_240x64_2x_hw_spi = { u8g_dev_uc1608_240x64_2x_fn, &u8g_dev_uc1608_240x64_2x_pb, U8G_COM_HW_SPI };
