/***************************************************************************//**
 *   @file   lcd.cpp
 *   @brief  Implementation of lcd.cpp
 *   @author Rbolboac (ramona.bolboaca@analog.com)
 *******************************************************************************
 * Copyright 2022(c) Analog Devices, Inc.
 *
 * 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.
 *  - Neither the name of Analog Devices, Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *  - The use of this software may or may not infringe the patent rights
 *    of one or more patent holders.  This license does not release you
 *    from the requirement that you obtain separate licenses from these
 *    patent holders to use this software.
 *  - Use of the software either in source or binary form, must be run
 *    on or directly connected to an Analog Devices Inc. component.
 *
 * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ******************************************************************************/

#ifdef EVAL_BUILD
#include <ADuCM360.h>
#include <hal/timer.h>
#include <errno.h>
#include <cstring>
#include <hal/drivers/lcd.h>
#include <cassert>
#include <hal/drivers/flash.h>
#include <hal/devices.h>

#define LCD_REVERSE 0x1
#define LCD_BLINK 0x2

#define LCD_BLINK_INTERVAL 500

#define FB_FLUSH_DELAY 30

uint8_t framebuffer_memory[4][128]; //512 bytes

static uint8_t lcd_tty_buffer[128];

static int tty_cursor = 0;

static bool blink_on = false;

static const uint8_t ASC16[256][8] = {
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x3E, 0x5B, 0x4F, 0x5B, 0x3E, 0x00, 0x00},
	{0x00, 0x3E, 0x6B, 0x4F, 0x6B, 0x3E, 0x00, 0x00},
	{0x00, 0x1C, 0x3E, 0x7C, 0x3E, 0x1C, 0x00, 0x00},
	{0x00, 0x18, 0x3C, 0x7E, 0x3C, 0x18, 0x00, 0x00},
	{0x00, 0x1C, 0x57, 0x7D, 0x57, 0x1C, 0x00, 0x00},
	{0x00, 0x1C, 0x5E, 0x7F, 0x5E, 0x1C, 0x00, 0x00},
	{0x00, 0x00, 0x18, 0x3C, 0x18, 0x00, 0x00, 0x00},
	{0x00, 0xFF, 0xE7, 0xC3, 0xE7, 0xFF, 0x00, 0x00},
	{0x00, 0x00, 0x18, 0x24, 0x18, 0x00, 0x00, 0x00},
	{0x00, 0xFF, 0xE7, 0xDB, 0xE7, 0xFF, 0x00, 0x00},
	{0x00, 0x30, 0x48, 0x3A, 0x06, 0x0E, 0x00, 0x00},
	{0x00, 0x26, 0x29, 0x79, 0x29, 0x26, 0x00, 0x00},
	{0x00, 0x40, 0x7F, 0x05, 0x05, 0x07, 0x00, 0x00},
	{0x00, 0x40, 0x7F, 0x05, 0x25, 0x3F, 0x00, 0x00},
	{0x00, 0x5A, 0x3C, 0xE7, 0x3C, 0x5A, 0x00, 0x00},
	{0x00, 0x7F, 0x3E, 0x1C, 0x1C, 0x08, 0x00, 0x00},
	{0x00, 0x08, 0x1C, 0x1C, 0x3E, 0x7F, 0x00, 0x00},
	{0x00, 0x14, 0x22, 0x7F, 0x22, 0x14, 0x00, 0x00},
	{0x00, 0x5F, 0x5F, 0x00, 0x5F, 0x5F, 0x00, 0x00},
	{0x00, 0x06, 0x09, 0x7F, 0x01, 0x7F, 0x00, 0x00},
	{0x00, 0x00, 0x66, 0x89, 0x95, 0x6A, 0x00, 0x00},
	{0x00, 0x60, 0x60, 0x60, 0x60, 0x60, 0x00, 0x00},
	{0x00, 0x94, 0xA2, 0xFF, 0xA2, 0x94, 0x00, 0x00},
	{0x00, 0x08, 0x04, 0x7E, 0x04, 0x08, 0x00, 0x00},
	{0x00, 0x10, 0x20, 0x7E, 0x20, 0x10, 0x00, 0x00},
	{0x00, 0x08, 0x08, 0x2A, 0x1C, 0x08, 0x00, 0x00},
	{0x00, 0x08, 0x1C, 0x2A, 0x08, 0x08, 0x00, 0x00},
	{0x00, 0x1E, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00},
	{0x00, 0x0C, 0x1E, 0x0C, 0x1E, 0x0C, 0x00, 0x00},
	{0x00, 0x30, 0x38, 0x3E, 0x38, 0x30, 0x00, 0x00},
	{0x00, 0x06, 0x0E, 0x3E, 0x0E, 0x06, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x07, 0x00, 0x07, 0x00, 0x00, 0x00},
	{0x00, 0x14, 0x7F, 0x14, 0x7F, 0x14, 0x00, 0x00},
	{0x00, 0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x00, 0x00},
	{0x00, 0x23, 0x13, 0x08, 0x64, 0x62, 0x00, 0x00},
	{0x00, 0x36, 0x49, 0x56, 0x20, 0x50, 0x00, 0x00},
	{0x00, 0x00, 0x08, 0x07, 0x03, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x22, 0x1C, 0x00, 0x00, 0x00},
	{0x00, 0x2A, 0x1C, 0x7F, 0x1C, 0x2A, 0x00, 0x00},
	{0x00, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x00},
	{0x00, 0x00, 0x80, 0x70, 0x30, 0x00, 0x00, 0x00},
	{0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x60, 0x60, 0x00, 0x00, 0x00},
	{0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00},
	{0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x00},
	{0x00, 0x00, 0x42, 0x7F, 0x40, 0x00, 0x00, 0x00},
	{0x00, 0x72, 0x49, 0x49, 0x49, 0x46, 0x00, 0x00},
	{0x00, 0x21, 0x41, 0x49, 0x4D, 0x33, 0x00, 0x00},
	{0x00, 0x18, 0x14, 0x12, 0x7F, 0x10, 0x00, 0x00},
	{0x00, 0x27, 0x45, 0x45, 0x45, 0x39, 0x00, 0x00},
	{0x00, 0x3C, 0x4A, 0x49, 0x49, 0x31, 0x00, 0x00},
	{0x00, 0x41, 0x21, 0x11, 0x09, 0x07, 0x00, 0x00},
	{0x00, 0x36, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00},
	{0x00, 0x46, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x40, 0x34, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x22, 0x14, 0x08, 0x00, 0x00},
	{0x00, 0x02, 0x01, 0x59, 0x09, 0x06, 0x00, 0x00},
	{0x00, 0x3E, 0x41, 0x5D, 0x59, 0x4E, 0x00, 0x00},
	{0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C, 0x00, 0x00},
	{0x00, 0x7F, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00},
	{0x00, 0x3E, 0x41, 0x41, 0x41, 0x22, 0x00, 0x00},
	{0x00, 0x7F, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00},
	{0x00, 0x7F, 0x49, 0x49, 0x49, 0x41, 0x00, 0x00},
	{0x00, 0x7F, 0x09, 0x09, 0x09, 0x01, 0x00, 0x00},
	{0x00, 0x3E, 0x41, 0x41, 0x51, 0x73, 0x00, 0x00},
	{0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x7F, 0x41, 0x00, 0x00, 0x00},
	{0x00, 0x20, 0x40, 0x41, 0x3F, 0x01, 0x00, 0x00},
	{0x00, 0x7F, 0x08, 0x14, 0x22, 0x41, 0x00, 0x00},
	{0x00, 0x7F, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00},
	{0x00, 0x7F, 0x02, 0x1C, 0x02, 0x7F, 0x00, 0x00},
	{0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x00, 0x00},
	{0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x00, 0x00},
	{0x00, 0x7F, 0x09, 0x09, 0x09, 0x06, 0x00, 0x00},
	{0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E, 0x00, 0x00},
	{0x00, 0x7F, 0x09, 0x19, 0x29, 0x46, 0x00, 0x00},
	{0x00, 0x26, 0x49, 0x49, 0x49, 0x32, 0x00, 0x00},
	{0x00, 0x03, 0x01, 0x7F, 0x01, 0x03, 0x00, 0x00},
	{0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x00, 0x00},
	{0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F, 0x00, 0x00},
	{0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F, 0x00, 0x00},
	{0x00, 0x63, 0x14, 0x08, 0x14, 0x63, 0x00, 0x00},
	{0x00, 0x03, 0x04, 0x78, 0x04, 0x03, 0x00, 0x00},
	{0x00, 0x61, 0x59, 0x49, 0x4D, 0x43, 0x00, 0x00},
	{0x00, 0x00, 0x7F, 0x41, 0x41, 0x41, 0x00, 0x00},
	{0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x41, 0x41, 0x7F, 0x00, 0x00},
	{0x00, 0x04, 0x02, 0x01, 0x02, 0x04, 0x00, 0x00},
	{0x00, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00},
	{0x00, 0x00, 0x03, 0x07, 0x08, 0x00, 0x00, 0x00},
	{0x00, 0x20, 0x54, 0x54, 0x78, 0x40, 0x00, 0x00},
	{0x00, 0x7F, 0x28, 0x44, 0x44, 0x38, 0x00, 0x00},
	{0x00, 0x38, 0x44, 0x44, 0x44, 0x28, 0x00, 0x00},
	{0x00, 0x38, 0x44, 0x44, 0x28, 0x7F, 0x00, 0x00},
	{0x00, 0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x00},
	{0x00, 0x00, 0x08, 0x7E, 0x09, 0x02, 0x00, 0x00},
	{0x00, 0x18, 0xA4, 0xA4, 0x9C, 0x78, 0x00, 0x00},
	{0x00, 0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00},
	{0x00, 0x00, 0x44, 0x7D, 0x40, 0x00, 0x00, 0x00},
	{0x00, 0x20, 0x40, 0x40, 0x3D, 0x00, 0x00, 0x00},
	{0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x7F, 0x40, 0x00, 0x00, 0x00},
	{0x00, 0x7C, 0x04, 0x78, 0x04, 0x78, 0x00, 0x00},
	{0x00, 0x7C, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00},
	{0x00, 0x38, 0x44, 0x44, 0x44, 0x38, 0x00, 0x00},
	{0x00, 0xFC, 0x18, 0x24, 0x24, 0x18, 0x00, 0x00},
	{0x00, 0x18, 0x24, 0x24, 0x18, 0xFC, 0x00, 0x00},
	{0x00, 0x7C, 0x08, 0x04, 0x04, 0x08, 0x00, 0x00},
	{0x00, 0x48, 0x54, 0x54, 0x54, 0x24, 0x00, 0x00},
	{0x00, 0x04, 0x04, 0x3F, 0x44, 0x24, 0x00, 0x00},
	{0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C, 0x00, 0x00},
	{0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C, 0x00, 0x00},
	{0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C, 0x00, 0x00},
	{0x00, 0x44, 0x28, 0x10, 0x28, 0x44, 0x00, 0x00},
	{0x00, 0x4C, 0x90, 0x90, 0x90, 0x7C, 0x00, 0x00},
	{0x00, 0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x00},
	{0x00, 0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x41, 0x36, 0x08, 0x00, 0x00, 0x00},
	{0x00, 0x02, 0x01, 0x02, 0x04, 0x02, 0x00, 0x00},
	{0x00, 0x3C, 0x26, 0x23, 0x26, 0x3C, 0x00, 0x00},
	{0x00, 0x1E, 0xA1, 0xA1, 0x61, 0x12, 0x00, 0x00},
	{0x00, 0x3A, 0x40, 0x40, 0x20, 0x7A, 0x00, 0x00},
	{0x00, 0x38, 0x54, 0x54, 0x55, 0x59, 0x00, 0x00},
	{0x00, 0x21, 0x55, 0x55, 0x79, 0x41, 0x00, 0x00},
	{0x00, 0x22, 0x54, 0x54, 0x78, 0x42, 0x00, 0x00},
	{0x00, 0x21, 0x55, 0x54, 0x78, 0x40, 0x00, 0x00},
	{0x00, 0x20, 0x54, 0x55, 0x79, 0x40, 0x00, 0x00},
	{0x00, 0x0C, 0x1E, 0x52, 0x72, 0x12, 0x00, 0x00},
	{0x00, 0x39, 0x55, 0x55, 0x55, 0x59, 0x00, 0x00},
	{0x00, 0x39, 0x54, 0x54, 0x54, 0x59, 0x00, 0x00},
	{0x00, 0x39, 0x55, 0x54, 0x54, 0x58, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x45, 0x7C, 0x41, 0x00, 0x00},
	{0x00, 0x00, 0x02, 0x45, 0x7D, 0x42, 0x00, 0x00},
	{0x00, 0x00, 0x01, 0x45, 0x7C, 0x40, 0x00, 0x00},
	{0x00, 0x7D, 0x12, 0x11, 0x12, 0x7D, 0x00, 0x00},
	{0x00, 0xF0, 0x28, 0x25, 0x28, 0xF0, 0x00, 0x00},
	{0x00, 0x7C, 0x54, 0x55, 0x45, 0x00, 0x00, 0x00},
	{0x00, 0x20, 0x54, 0x54, 0x7C, 0x54, 0x00, 0x00},
	{0x00, 0x7C, 0x0A, 0x09, 0x7F, 0x49, 0x00, 0x00},
	{0x00, 0x32, 0x49, 0x49, 0x49, 0x32, 0x00, 0x00},
	{0x00, 0x3A, 0x44, 0x44, 0x44, 0x3A, 0x00, 0x00},
	{0x00, 0x32, 0x4A, 0x48, 0x48, 0x30, 0x00, 0x00},
	{0x00, 0x3A, 0x41, 0x41, 0x21, 0x7A, 0x00, 0x00},
	{0x00, 0x3A, 0x42, 0x40, 0x20, 0x78, 0x00, 0x00},
	{0x00, 0x00, 0x9D, 0xA0, 0xA0, 0x7D, 0x00, 0x00},
	{0x00, 0x3D, 0x42, 0x42, 0x42, 0x3D, 0x00, 0x00},
	{0x00, 0x3D, 0x40, 0x40, 0x40, 0x3D, 0x00, 0x00},
	{0x00, 0x3C, 0x24, 0xFF, 0x24, 0x24, 0x00, 0x00},
	{0x00, 0x48, 0x7E, 0x49, 0x43, 0x66, 0x00, 0x00},
	{0x00, 0x2B, 0x2F, 0xFC, 0x2F, 0x2B, 0x00, 0x00},
	{0x00, 0xFF, 0x09, 0x29, 0xF6, 0x20, 0x00, 0x00},
	{0x00, 0xC0, 0x88, 0x7E, 0x09, 0x03, 0x00, 0x00},
	{0x00, 0x20, 0x54, 0x54, 0x79, 0x41, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x44, 0x7D, 0x41, 0x00, 0x00},
	{0x00, 0x30, 0x48, 0x48, 0x4A, 0x32, 0x00, 0x00},
	{0x00, 0x38, 0x40, 0x40, 0x22, 0x7A, 0x00, 0x00},
	{0x00, 0x00, 0x7A, 0x0A, 0x0A, 0x72, 0x00, 0x00},
	{0x00, 0x7D, 0x0D, 0x19, 0x31, 0x7D, 0x00, 0x00},
	{0x00, 0x26, 0x29, 0x29, 0x2F, 0x28, 0x00, 0x00},
	{0x00, 0x26, 0x29, 0x29, 0x29, 0x26, 0x00, 0x00},
	{0x00, 0x30, 0x48, 0x4D, 0x40, 0x20, 0x00, 0x00},
	{0x00, 0x38, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00},
	{0x00, 0x08, 0x08, 0x08, 0x08, 0x38, 0x00, 0x00},
	{0x00, 0x2F, 0x10, 0xC8, 0xAC, 0xBA, 0x00, 0x00},
	{0x00, 0x2F, 0x10, 0x28, 0x34, 0xFA, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x7B, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x08, 0x14, 0x2A, 0x14, 0x22, 0x00, 0x00},
	{0x00, 0x22, 0x14, 0x2A, 0x14, 0x08, 0x00, 0x00},
	{0x00, 0x55, 0x00, 0x55, 0x00, 0x55, 0x00, 0x00},
	{0x00, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x00, 0x00},
	{0x00, 0xFF, 0x55, 0xFF, 0x55, 0xFF, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0xFF, 0x00, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0xFF, 0x00, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0xFF, 0x00, 0xFF, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0xFC, 0x00, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0xF7, 0x00, 0xFF, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0xF4, 0x04, 0xFC, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x17, 0x10, 0x1F, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x1F, 0x10, 0x1F, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0x1F, 0x00, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0x1F, 0x10, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0x1F, 0x10, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0xF0, 0x10, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xFF, 0x10, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0xFF, 0x10, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xFF, 0x14, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x1F, 0x10, 0x17, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xFC, 0x04, 0xF4, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x17, 0x10, 0x17, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0xF4, 0x04, 0xF4, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xFF, 0x00, 0xF7, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0xF7, 0x00, 0xF7, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0x17, 0x14, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x1F, 0x10, 0x1F, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0xF4, 0x14, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x1F, 0x10, 0x1F, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0x1F, 0x14, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xFC, 0x14, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xF0, 0x10, 0xF0, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0xFF, 0x10, 0xFF, 0x00, 0x00},
	{0x00, 0x14, 0x14, 0x14, 0xFF, 0x14, 0x00, 0x00},
	{0x00, 0x10, 0x10, 0x10, 0x1F, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xF0, 0x10, 0x00, 0x00},
	{0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00},
	{0x00, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0x00, 0x00},
	{0x00, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00},
	{0x00, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x00, 0x00},
	{0x00, 0x38, 0x44, 0x44, 0x38, 0x44, 0x00, 0x00},
	{0x00, 0xFC, 0x4A, 0x4A, 0x4A, 0x34, 0x00, 0x00},
	{0x00, 0x7E, 0x02, 0x02, 0x06, 0x06, 0x00, 0x00},
	{0x00, 0x02, 0x7E, 0x02, 0x7E, 0x02, 0x00, 0x00},
	{0x00, 0x63, 0x55, 0x49, 0x41, 0x63, 0x00, 0x00},
	{0x00, 0x38, 0x44, 0x44, 0x3C, 0x04, 0x00, 0x00},
	{0x00, 0x40, 0x7E, 0x20, 0x1E, 0x20, 0x00, 0x00},
	{0x00, 0x06, 0x02, 0x7E, 0x02, 0x02, 0x00, 0x00},
	{0x00, 0x99, 0xA5, 0xE7, 0xA5, 0x99, 0x00, 0x00},
	{0x00, 0x1C, 0x2A, 0x49, 0x2A, 0x1C, 0x00, 0x00},
	{0x00, 0x4C, 0x72, 0x01, 0x72, 0x4C, 0x00, 0x00},
	{0x00, 0x30, 0x4A, 0x4D, 0x4D, 0x30, 0x00, 0x00},
	{0x00, 0x30, 0x48, 0x78, 0x48, 0x30, 0x00, 0x00},
	{0x00, 0xBC, 0x62, 0x5A, 0x46, 0x3D, 0x00, 0x00},
	{0x00, 0x3E, 0x49, 0x49, 0x49, 0x00, 0x00, 0x00},
	{0x00, 0x7E, 0x01, 0x01, 0x01, 0x7E, 0x00, 0x00},
	{0x00, 0x2A, 0x2A, 0x2A, 0x2A, 0x2A, 0x00, 0x00},
	{0x00, 0x44, 0x44, 0x5F, 0x44, 0x44, 0x00, 0x00},
	{0x00, 0x40, 0x51, 0x4A, 0x44, 0x40, 0x00, 0x00},
	{0x00, 0x40, 0x44, 0x4A, 0x51, 0x40, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0xFF, 0x01, 0x03, 0x00, 0x00},
	{0x00, 0xE0, 0x80, 0xFF, 0x00, 0x00, 0x00, 0x00},
	{0x00, 0x08, 0x08, 0x6B, 0x6B, 0x08, 0x00, 0x00},
	{0x00, 0x36, 0x12, 0x36, 0x24, 0x36, 0x00, 0x00},
	{0x00, 0x06, 0x0F, 0x09, 0x0F, 0x06, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00},
	{0x00, 0x30, 0x40, 0xFF, 0x01, 0x01, 0x00, 0x00},
	{0x00, 0x00, 0x1F, 0x01, 0x01, 0x1E, 0x00, 0x00},
	{0x00, 0x00, 0x19, 0x1D, 0x17, 0x12, 0x00, 0x00},
	{0x00, 0x00, 0x3C, 0x3C, 0x3C, 0x3C, 0x00, 0x00},
	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
};
void static lcd_write_control(const unsigned char &data)
{
	GP0CLR_CLR4_BBA = true;
	pADI_SPI1->SPITX = data;
	while ((pADI_SPI1->SPISTA & SPI1STA_TXFSTA_MSK) != SPI1STA_TXFSTA_EMPTY)
		;
}

void static lcd_write_image(const unsigned char data)
{
	GP0SET_SET4_BBA = true;
	pADI_SPI1->SPITX = data;
	while ((pADI_SPI1->SPISTA & SPI1STA_TXFSTA_MSK) != SPI1STA_TXFSTA_EMPTY)
		;
}

int send_spi_image(int argc, char *argv[])
{
	unsigned char page = 0xB0;
	// lcd_write_control(0xAE); // Display OFF
	lcd_write_control(0x40); // Display start address + 0x40
	for (unsigned int i = 0; i < 4; i++) {
		// 32pixel display / 8 pixels per page = 4 pages
		lcd_write_control(page); // send page address
		lcd_write_control(0x10); // column address upper 4 bits + 0x10
		lcd_write_control(0x00); // column address lower 4 bits + 0x00
		for (unsigned int j = 0; j < 128; j++) {
			// 128 columns wide
			// todo
			lcd_write_image(framebuffer_memory[i][j]); // send picture data
		}
		page++; // after 128 columns, go to next page
	}
	// lcd_write_control(0xAF); // Display on
	return 0;
}

void static lcd_framebuffer_flush(void)
{
	timer t;
	t.time = FB_FLUSH_DELAY;
	t.timer_app.fun = send_spi_image;
	t.timer_app.argc = 0;
	t.timer_app.argv = new char*;
	update_timer(t);
}

/*
 * lcd tty buffer size 128
 * address 0~63 for character display
 * address 64~127 for reverse and blink control
 *
 * character register address map to LCD position
 * 8 x 16 pixel for each position
 * ┌───┬───┬──────┬───┬───┐
 * │ 0 │ 1 │......│14 │15 │
 * ├───┼───┼──────┼───┼───┤
 * │16 │17 │......│30 │31 │
 * ├───┼───┼──────┼───┼───┤
 * │32 │33 │......│46 │47 │
 * ├───┼───┼──────┼───┼───┤
 * │48 │49 │......│62 │63 │
 * └───┴───┴──────┴───┴───┘
 *
 * reverse and blink register address map to LCD position
 * 8 x 16 pixel for each position
 * ┌───┬───┬──────┬───┬───┐
 * │64 │65 │......│78 │79 │
 * ├───┼───┼──────┼───┼───┤
 * │80 │81 │......│94 │95 │
 * ├───┼───┼──────┼───┼───┤
 * │96 │97 │......│110│111│
 * ├───┼───┼──────┼───┼───┤
 * │112│113│......│126│127│
 * └───┴───┴──────┴───┴───┘
 *
 * reverse and blink register bit definition
 * B: 1 blink, 0 gaze
 * R: 1 reverse, 0 normal
 * others: null
 * ┌─┬─┬─┬─┬─┬─┬─┬─┐
 * │7│6│5│4│3│2│B│R│
 * └─┴─┴─┴─┴─┴─┴─┴─┘
 */

ssize_t lcd_tty_write(const void *buf, size_t count)
{
	if ((tty_cursor + count) > sizeof(lcd_tty_buffer)) {
		count = sizeof(lcd_tty_buffer) - tty_cursor;
	}

	memcpy(&lcd_tty_buffer[tty_cursor], buf, count);

	for (int j = 0; j < count; ++j) {
		int cursor = (tty_cursor + j) % 64;
		int y = cursor >> 4; // page
		int x = (cursor & 0xf) << 3; // segment

		for (int i = 0; i < 8; i++)
			framebuffer_memory[y][x+i] = ASC16[lcd_tty_buffer[cursor]][i];
	}

	lcd_framebuffer_flush();

	tty_cursor += count;

	return count;
}

int static lcd_blinking(int argc, char *argv[])
{
	blink_on = !blink_on;

	for (int cursor = 0; cursor < 64; ++cursor) {
		int y = cursor >> 4; // page
		int x = (cursor & 0xf) << 3; // segment
		if ((((lcd_tty_buffer[cursor + 64] & LCD_BLINK) == LCD_BLINK) && blink_on) ||
		    (((lcd_tty_buffer[cursor + 64] & LCD_REVERSE) == LCD_REVERSE))) {
			for (int i = 0; i < 8; i++)
				framebuffer_memory[y][x+i] = ~ASC16[lcd_tty_buffer[cursor]][i];

		} else {
			for (int i = 0; i < 8; i++)
				framebuffer_memory[y][x+i] = ASC16[lcd_tty_buffer[cursor]][i];
		}
	}

	lcd_framebuffer_flush();

	timer t;
	t.time = LCD_BLINK_INTERVAL / 2;
	t.timer_app.fun = lcd_blinking;
	t.timer_app.argc = 0;
	t.timer_app.argv = new char*;

	update_timer(t);

	return 0;
}

off_t lcd_tty_lseek(off_t offset, int whence)
{
	switch (whence) {
	case SEEK_SET:
		if (offset > sizeof(lcd_tty_buffer) || offset < 0) {
			errno = EINVAL;
			return -1;
		}
		tty_cursor = offset;
		break;
	case SEEK_CUR:
		if ((tty_cursor + offset) > sizeof(lcd_tty_buffer)
		    || (tty_cursor + offset) < 0) {
			errno = EINVAL;
			return -1;
		}
		tty_cursor += offset;
		break;
	case SEEK_END:
		if (offset > 0 || (sizeof(lcd_tty_buffer) + offset) < 0) {
			errno = EINVAL;
			return -1;
		}
		tty_cursor = sizeof(lcd_tty_buffer) + offset;
		break;
	default:
		errno = ENXIO;
		return -1;
	}

	return tty_cursor;
}

void init_lcd(void)
{
	flash_file * p_flash_file;
	decltype(flash_file::brightness) brightness;

	lcd_write_control(0xA0); // ADC select
	lcd_write_control(0xAE); // Display OFF
	lcd_write_control(0xC8); // COM direction scan
	lcd_write_control(0xA2); // LCD bias set
	lcd_write_control(0x2F); // Power Control set
	lcd_write_control(0x21); // Resistor Ratio Set

	fseek(p_flash, (int) (&p_flash_file->brightness) - (int) (p_flash_file),
	      SEEK_SET);
	fread(&brightness, sizeof(flash_file::brightness), 1, p_flash);

	lcd_write_control(
		0x81); // Electronic Volume Command (set contrast) Double Btye: 1 of 2
	lcd_write_control(
		brightness &
		0xFF); // Electronic Volume value (contrast value) Double Byte: 2 of 2
	lcd_write_control(0xAF); // Display ON
}

void clear_lcd(void)
{
	unsigned char page = 0xB0;
	// lcd_write_control(0xAE); // Display OFF
	lcd_write_control(0x40); // Display start address + 0x40
	for (unsigned int i = 0; i < 4; i++) {
		// 32pixel display / 8 pixels per page = 4 pages
		lcd_write_control(page); // send page address

		// Sets the most significant 4 bits of the display RAM column address.
		lcd_write_control(0x10); // column address upper 4 bits + 0x10
		// Sets the least significant 4 bits of the display RAM column address.
		lcd_write_control(0x00); // column address lower 4 bits + 0x00
		for (unsigned int j = 0; j < 128; j++) {
			// 128 columns wide
			lcd_write_image(0x00); // send picture data
		}
		page++; // after 128 columns, go to next page
	}
	lcd_write_control(0xAF); // Display on
}

void lcd_open(void)
{

	CLKDIS_DISSPI1CLK_BBA = false;
	pADI_CLKCTL->CLKCON1 = (pADI_CLKCTL->CLKCON1 & ~CLKCON1_SPI1CD_MSK) |
			       CLKCON1_SPI1CD_DIV1;

//	according schematic
	pADI_GP0->GPCON = (pADI_GP0->GPCON & ~GP0CON_CON1_MSK) | GP0CON_CON1_SPI1SCLK;
	pADI_GP0->GPCON = (pADI_GP0->GPCON & ~GP0CON_CON2_MSK) | GP0CON_CON2_SPI1MOSI;
	pADI_GP0->GPCON = (pADI_GP0->GPCON & ~GP0CON_CON3_MSK) | GP0CON_CON3_SPI1CS0;
	pADI_GP0->GPCON = (pADI_GP0->GPCON & ~GP0CON_CON4_MSK) | GP0CON_CON4_GPIO;

	GP0OCE_OCE1_BBA = false;
	GP0OCE_OCE2_BBA = false;
	GP0OCE_OCE3_BBA = false;
	GP0OCE_OCE4_BBA = false;

	GP0OEN_OEN1_BBA = true;
	GP0OEN_OEN2_BBA = true;
	GP0OEN_OEN3_BBA = true;
	GP0OEN_OEN4_BBA = true;

	GP0PUL_PUL1_BBA = true;
	GP0PUL_PUL2_BBA = true;
	GP0PUL_PUL3_BBA = true;
	GP0PUL_PUL4_BBA = true;

	pADI_SPI1->SPIDIV = SPI1DIV_BCRST_DIS | (SPI1DIV_DIV_MSK & 0x0);

	pADI_SPI1->SPICON = SPI1CON_MOD_TX4RX4 | SPI1CON_TFLUSH_DIS | SPI1CON_RFLUSH_EN
			    | SPI1CON_CON_EN
			    | SPI1CON_LOOPBACK_DIS | SPI1CON_SOEN_DIS | SPI1CON_RXOF_EN | SPI1CON_ZEN_DIS |
			    SPI1CON_TIM_TXWR
			    | SPI1CON_LSB_DIS | SPI1CON_WOM_DIS | SPI1CON_CPOL_HIGH |
			    SPI1CON_CPHA_SAMPLETRAILING
			    | SPI1CON_MASEN_EN | SPI1CON_ENABLE_EN;

	init_lcd();
	clear_lcd();
	lcd_tty_lseek(0, SEEK_SET);

	lcd_blinking(0, nullptr);
}

#endif // EVAL_BUILD