circuitpython/ports/atmel-samd/boards/pyportal_titano/board.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 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 "boards/board.h"
#include "mpconfigboard.h"
#include "hal/include/hal_gpio.h"

#include "shared-bindings/busio/SPI.h"
#include "shared-bindings/displayio/FourWire.h"

#include "shared-module/displayio/__init__.h"
#include "shared-module/displayio/mipi_constants.h"

#include "tick.h"

#define DELAY 0x80

uint8_t display_init_sequence[] = {
    0x01, DELAY, 100/5,                  // Soft reset, then delay 10 ms
    0xB9, 3, 0xFF, 0x83, 0x57,          // Extension command set
    0xFF, DELAY, 500/5,
    0xB3, 4, 0x80, 0x00, 0x06, 0x06,    // 0x80 enables SDO pin (0x00 disables)
    0xB6, 2, 0x01, 0x25,                // -1.52V
    0xB0, 1, 0x68,                      // Normal mode 70Hz, Idle mode 55 Hz
    0xCC, 1, 0x05,
    0xB1, 6,
      0x00,                            // Not deep standby
      0x15,                            // BT
      0x1C,                            // VSPR
      0x1C,                            // VSNR
      0x83,                           // AP
      0xAA,                           // FS
    0xC0, 6,
      0x50,                      // OPON normal
      0x50,                      // OPON idle
      0x01,                      // STBA
      0x3C,                      // STBA
      0x1E,                      // STBA
      0x08,                      // GEN
    0xB4, 7,
      0x02,                      // NW 0x02
      0x40,                      // RTN
      0x00,                      // DIV
      0x2A,                      // DUM
      0x2A,                      // DUM
      0x0D,                      // GDON
      0x78,                      // GDOFF
    0xE0, 34,
      0x02, 0x0A, 0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b,
      0x42, 0x3A, 0x27, 0x1B, 0x08, 0x09, 0x03, 0x02, 0x0A,
      0x11, 0x1d, 0x23, 0x35, 0x41, 0x4b, 0x4b, 0x42, 0x3A,
      0x27, 0x1B, 0x08, 0x09, 0x03, 0x00, 0x01,
    0x3a, 1, 0x55,
    0x36, 1, 0x00,
    0x11, DELAY, 150/5, // Exit Sleep, then delay 150 ms
    0x29, DELAY, 50/5
};

void board_init(void) {
    busio_spi_obj_t* spi = &displays[0].fourwire_bus.inline_bus;
    common_hal_busio_spi_construct(spi, &pin_PA13, &pin_PA12, &pin_PA14);
    common_hal_busio_spi_never_reset(spi);
    
    displayio_fourwire_obj_t* bus = &displays[0].fourwire_bus;
    bus->base.type = &displayio_fourwire_type;
    common_hal_displayio_fourwire_construct(bus,
        spi,
        &pin_PB05, // TFT_DC Command or data
        &pin_PB06, // TFT_CS Chip select
        &pin_PA00, // TFT_RST Reset
        24000000);

    displayio_display_obj_t* display = &displays[0].display;
    display->base.type = &displayio_display_type;
    common_hal_displayio_display_construct(display,
        bus,
        480, // Width
        320, // Height
        0, // column start
        0, // row start
        270, // rotation
        16, // Color depth
        false, // grayscale
        false, // pixels_in_byte_share_row (unused for depths > 8)
        1, // bytes per cell. Only valid for depths < 8
        false, // reverse_pixels_in_byte. Only valid for depths < 8
        MIPI_COMMAND_SET_COLUMN_ADDRESS, // Set column command
        MIPI_COMMAND_SET_PAGE_ADDRESS, // Set row command
        MIPI_COMMAND_WRITE_MEMORY_START, // Write memory command
        0x37, // Set vertical scroll command
        display_init_sequence,
        sizeof(display_init_sequence),
        &pin_PB31, // Backlight pin
        NO_BRIGHTNESS_COMMAND,
        1.0f, // brightness (ignored)
        true, // auto_brightness
        false, // single_byte_bounds
        false, // data_as_commands
        true, // auto_refresh
        60); // native_frames_per_second
}

bool board_requests_safe_mode(void) {
    return false;
}

void reset_board(void) {
}