/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "supervisor/board.h"

#include "mpconfigboard.h"
#include "shared-bindings/busio/SPI.h"
#include "shared-bindings/displayio/FourWire.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-module/displayio/__init__.h"
#include "shared-bindings/board/__init__.h"
#include "supervisor/shared/board.h"

#define DELAY 0x80

// This is an SPD1656 control chip. The display is a 5.7" ACeP EInk.

const uint8_t display_start_sequence[] = {
    0x01, 4, 0x37, 0x00, 0x23, 0x23, // power setting
    0x00, 2, 0xef, 0x08, // panel setting (PSR)
    0x03, 1, 0x00, // PFS
    0x06, 3, 0xc7, 0xc7, 0x1d, // booster
    0x30, 1, 0x3c, // PLL setting
    0x41, 1, 0x00, // TSE
    0x50, 1, 0x37, // vcom and data interval setting
    0x60, 1, 0x22, // tcon setting
    0x61, 4, 0x02, 0x58, 0x01, 0xc0, // tres
    0xe3, 1, 0xaa, // PWS
    0x04, DELAY | 0, 0xc8, // VCM DC and delay 200ms
};

const uint8_t display_stop_sequence[] = {
    0x02, 1, 0x00, // power off
    0x07, 1, 0xa5 // deep sleep
};

const uint8_t refresh_sequence[] = {
    0x12, 0x00
};

void board_init(void) {
    displayio_fourwire_obj_t *bus = &allocate_display_bus()->fourwire_bus;
    busio_spi_obj_t *spi = common_hal_board_create_spi(0);

    bus->base.type = &displayio_fourwire_type;
    common_hal_displayio_fourwire_construct(bus,
        spi,
        &pin_GPIO28, // EPD_DC Command or data
        &pin_GPIO17, // EPD_CS Chip select
        &pin_GPIO27, // EPD_RST Reset
        1000000, // Baudrate
        0, // Polarity
        0); // Phase

    displayio_epaperdisplay_obj_t *display = &allocate_display()->epaper_display;
    display->base.type = &displayio_epaperdisplay_type;
    common_hal_displayio_epaperdisplay_construct(
        display,
        bus,
        display_start_sequence, sizeof(display_start_sequence),
        1.0, // start up time
        display_stop_sequence, sizeof(display_stop_sequence),
        600,  // width
        448,  // height
        640,  // ram_width
        480,  // ram_height
        0,  // colstart
        0,  // rowstart
        180,  // rotation
        NO_COMMAND,  // set_column_window_command
        NO_COMMAND,  // set_row_window_command
        NO_COMMAND,  // set_current_column_command
        NO_COMMAND,  // set_current_row_command
        0x10,  // write_black_ram_command
        false,  // black_bits_inverted
        NO_COMMAND,  // write_color_ram_command
        false,  // color_bits_inverted
        0x000000,  // highlight_color
        refresh_sequence, sizeof(refresh_sequence),
        28.0,  // refresh_time
        NULL,  // busy_pin
        false,  // busy_state
        30.0, // seconds_per_frame
        false,  // always_toggle_chip_select
        false, // grayscale
        true, // acep
        false,  // two_byte_sequence_length
        false); // address_little_endian
}

// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.