copy from @erongd
https://github.com/erongd/circuitpython/blob/lilygo_t_display_rp2040/ports/raspberrypi/boards/lilygo_t_display_rp2040/board.c
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Matthias Kreier
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153
ports/raspberrypi/boards/lilygo_t_display_rp2040/board.c
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153
ports/raspberrypi/boards/lilygo_t_display_rp2040/board.c
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "supervisor/board.h"
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#include "mpconfigboard.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-module/displayio/__init__.h"
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#include "shared-module/displayio/mipi_constants.h"
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displayio_fourwire_obj_t board_display_obj;
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#define DELAY 0x80
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#define LCD_POWER 22
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// display init sequence according to LilyGO example app
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uint8_t display_init_sequence[] = {
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// sw reset
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0x01, 0 | DELAY, 150,
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// sleep out
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0x11, 0 | DELAY, 255,
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// normal display mode on
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0x13, 0,
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// display and color format settings
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0x36, 1, 0x08,
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0xB6, 2, 0x0A, 0x82,
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0x3A, 1 | DELAY, 0x55, 10,
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// ST7789V frame rate setting
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0xB2, 5, 0x0C, 0x0C, 0x00, 0x33, 0x33,
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// voltages: VGH / VGL
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0xB7, 1, 0x35,
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// ST7789V power setting
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0xBB, 1, 0x28,
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0xC0, 1, 0x0C,
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0xC2, 2, 0x01, 0xFF,
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0xC3, 1, 0x10,
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0xC4, 1, 0x20,
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0xC6, 1, 0x0F,
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0xD0, 2, 0xA4, 0xA1,
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// ST7789V gamma setting
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0xE0, 14, 0xD0, 0x00, 0x02, 0x07, 0x0A, 0x28, 0x32, 0x44, 0x42, 0x06, 0x0E, 0x12, 0x14, 0x17,
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0xE1, 14, 0xD0, 0x00, 0x02, 0x07, 0x0A, 0x28, 0x31, 0x54, 0x47, 0x0E, 0x1C, 0x17, 0x1B, 0x1E,
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0x21, 0,
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// display on
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0x29, 0 | DELAY, 255,
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};
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static void display_init(void) {
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busio_spi_obj_t *spi = &displays[0].fourwire_bus.inline_bus;
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common_hal_busio_spi_construct(
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spi,
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&pin_GPIO2, // CLK
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&pin_GPIO3, // MOSI
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NULL, // MISO not connected
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false); // Not half-duplex
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common_hal_busio_spi_never_reset(spi);
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displayio_fourwire_obj_t *bus = &displays[0].fourwire_bus;
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bus->base.type = &displayio_fourwire_type;
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common_hal_displayio_fourwire_construct(
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bus,
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spi,
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&pin_GPIO1, // DC
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&pin_GPIO5, // CS
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NULL, // RST (Reset pin tie to 0, do not set here)
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40000000, // baudrate
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1, // polarity
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0 // phase
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);
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displayio_display_obj_t *display = &displays[0].display;
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display->base.type = &displayio_display_type;
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common_hal_displayio_display_construct(
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display,
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bus,
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240, // width (after rotation)
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135, // height (after rotation)
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52, // column start
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40, // row start
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90, // rotation
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16, // color depth
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false, // grayscale
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false, // pixels in a byte share a row. Only valid for depths < 8
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1, // bytes per cell. Only valid for depths < 8
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false, // reverse_pixels_in_byte. Only valid for depths < 8
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true, // reverse_pixels_in_word
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MIPI_COMMAND_SET_COLUMN_ADDRESS, // set column command
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MIPI_COMMAND_SET_PAGE_ADDRESS, // set row command
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MIPI_COMMAND_WRITE_MEMORY_START, // write memory command
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display_init_sequence,
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sizeof(display_init_sequence),
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&pin_GPIO4, // backlight pin
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NO_BRIGHTNESS_COMMAND,
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1.0f, // brightness (ignored)
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false, // auto_brightness
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false, // single_byte_bounds
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false, // data_as_commands
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true, // auto_refresh
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60, // native_frames_per_second
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true, // backlight_on_high
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false // SH1107_addressing
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);
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common_hal_never_reset_pin(&pin_GPIO4); // backlight pin
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}
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void board_init(void) {
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// Pin 22 has to be pulled high to turn on the LCD
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const uint PWR_PIN = LCD_POWER;
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gpio_init(PWR_PIN);
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gpio_set_dir(PWR_PIN, GPIO_OUT);
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gpio_put(PWR_PIN, 1);
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common_hal_never_reset_pin(&pin_GPIO22);
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// Display
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display_init();
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}
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bool board_requests_safe_mode(void) {
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return false;
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}
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void reset_board(void) {
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}
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void board_deinit(void) {
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}
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