circuitpython/ports/espressif/boards/adafruit_funhouse/board.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 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-module/displayio/mipi_constants.h"

#include "esp_log.h"

displayio_fourwire_obj_t board_display_obj;

#define DELAY 0x80

uint8_t display_init_sequence[] = {
    0x01, 0 | DELAY, 150, // SWRESET
    0x11, 0 | DELAY, 255, // SLPOUT
    0x36, 1, 0b10100000,  // _MADCTL for rotation 0
    0x3a, 1, 0x55, // COLMOD - 16bit color
    0x21, 0 | DELAY, 10,                 // _INVON
    0x13, 0 | DELAY, 10,                 // _NORON
    0x29, 0 | DELAY, 255,                // _DISPON
};

void board_init(void) {
    // Debug UART
    #ifdef DEBUG
    common_hal_never_reset_pin(&pin_GPIO37);
    common_hal_never_reset_pin(&pin_GPIO38);
    #endif /* DEBUG */

    busio_spi_obj_t *spi = &displays[0].fourwire_bus.inline_bus;
    common_hal_busio_spi_construct(spi, &pin_GPIO36, &pin_GPIO35, NULL, false);
    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_GPIO39, // TFT_DC Command or data
        &pin_GPIO40, // TFT_CS Chip select
        &pin_GPIO41, // TFT_RESET Reset
        5000000, // Baudrate
        0, // Polarity
        0); // Phase

    // workaround as board_init() is called before reset_port() in main.c
    pwmout_reset();

    displayio_display_obj_t *display = &displays[0].display;
    display->base.type = &displayio_display_type;
    common_hal_displayio_display_construct(
        display,
        bus,
        240, // Width (after rotation)
        240, // Height (after rotation)
        80, // column start
        0, // row start
        270, // rotation
        16, // Color depth
        false, // Grayscale
        false, // Pixels in a byte share a row. Only used for depth < 8
        1, // bytes per cell. Only valid for depths < 8
        false, // reverse_pixels_in_byte. Only valid for depths < 8
        true, // reverse_pixels_in_word
        MIPI_COMMAND_SET_COLUMN_ADDRESS, // Set column command
        MIPI_COMMAND_SET_PAGE_ADDRESS, // Set row command
        MIPI_COMMAND_WRITE_MEMORY_START, // Write memory command
        display_init_sequence,
        sizeof(display_init_sequence),
        &pin_GPIO21,  // backlight pin
        NO_BRIGHTNESS_COMMAND,
        1.0f, // brightness
        false, // single_byte_bounds
        false, // data_as_commands
        true, // auto_refresh
        60, // native_frames_per_second
        true, // backlight_on_high
        false, // not SH1107
        50000); // backlight pwm frequency
}

bool board_requests_safe_mode(void) {
    return false;
}

void reset_board(void) {
}

void board_deinit(void) {
    common_hal_displayio_release_displays();
}