2021-08-11 16:11:17 -04:00
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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) 2020 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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#define DELAY 0x80
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// From Arduino-ST7789 library https://github.com/ananevilya/Arduino-ST7789-Library/blob/master/Arduino_ST7789.cpp
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#define ST7789_TFTWIDTH 240
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#define ST7789_TFTHEIGHT 240
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#define ST7789_240x240_XSTART 0
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#define ST7789_240x240_YSTART 0
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#define ST7789_NOP 0x00
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#define ST7789_SWRESET 0x01
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#define ST7789_RDDID 0x04
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#define ST7789_RDDST 0x09
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#define ST7789_SLPIN 0x10
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#define ST7789_SLPOUT 0x11
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#define ST7789_PTLON 0x12
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#define ST7789_NORON 0x13
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#define ST7789_INVOFF 0x20
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#define ST7789_INVON 0x21
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#define ST7789_DISPOFF 0x28
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#define ST7789_DISPON 0x29
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#define ST7789_CASET 0x2A
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#define ST7789_RASET 0x2B
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#define ST7789_RAMWR 0x2C
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#define ST7789_RAMRD 0x2E
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#define ST7789_PTLAR 0x30
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#define ST7789_COLMOD 0x3A
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#define ST7789_MADCTL 0x36
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#define ST7789_VSCSAD 0x37
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#define ST7789_PORCTRL 0xB2
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#define ST7789_GCTRL 0xB7
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#define ST7789_VCOMS 0xBB
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#define ST7789_LCMCTRL 0xC0
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#define ST7789_IDSET 0xC1
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#define ST7789_VDVVRHEN 0xC2
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#define ST7789_VRHS 0xC3
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#define ST7789_VDVS 0xC4
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#define ST7789_VCMOFSET 0xC5
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#define ST7789_FRCTRL2 0xC6
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#define ST7789_CABCCTRL 0xC7
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#define ST7789_REGSEL1 0xC8
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#define ST7789_REGSEL2 0xCA
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#define ST7789_PWMFRSEL 0xCC
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#define ST7789_PWCTRL1 0xD0
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#define ST7789_VAPVANEN 0xD2
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#define ST7789_PVGAMCTRL 0xE0
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#define ST7789_NVGAMCTRL 0xE1
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#define ST7789_MADCTL_MY 0x80
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#define ST7789_MADCTL_MX 0x40
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#define ST7789_MADCTL_MV 0x20
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#define ST7789_MADCTL_ML 0x10
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#define ST7789_MADCTL_RGB 0x00
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#define ST7789_RDID1 0xDA
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#define ST7789_RDID2 0xDB
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#define ST7789_RDID3 0xDC
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#define ST7789_RDID4 0xDD
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#define DISPLAY_MADCTL (ST7789_MADCTL_RGB)
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#define DISPLAY_VSCSAD 0
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// The init_sequence is bitpacked to minimize the ram impact. Every command begins with a
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// command byte followed by a byte to determine the parameter count and delay. When the top bit
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// of the second byte is 1 (0x80), a delay will occur after the command parameters are sent.
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// The remaining 7 bits are the parameter count excluding any delay byte. The bytes following
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// are the parameters. When the delay bit is set, a single byte after the parameters specifies
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// the delay duration in milliseconds. The value 0xff will lead to an extra long 500 ms delay
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// instead of 255 ms.uint8_t display_init_sequence[] = {
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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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// From Lilygo example
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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, 120,
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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, DISPLAY_MADCTL,
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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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0x21, 0 | DELAY, 10, // _INVON
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0x29, 0 | DELAY, 120
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};
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void board_init(void) {
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// Debug UART
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#ifdef DEBUG
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common_hal_never_reset_pin(&pin_GPIO6);
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common_hal_never_reset_pin(&pin_GPIO7);
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#endif /* DEBUG */
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// Display
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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_GPIO12, // CLK
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&pin_GPIO11, // MOSI
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2022-02-08 22:59:26 -05:00
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NULL, // MISO not connected
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false); // Not half-duplex
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2021-08-11 16:11:17 -04:00
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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_GPIO14, // DC
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&pin_GPIO10, // CS
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&pin_GPIO9, // RST
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40000000, // baudrate
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0, // polarity
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0 // phase
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);
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// workaround as board_init() is called before reset_port() in main.c
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pwmout_reset();
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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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240, // height (after rotation)
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0, // column start
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80, // row start
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0, // 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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NULL, // There is no backlight pin, defined for now.
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NO_BRIGHTNESS_COMMAND,
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1.0f, // brightness (ignored)
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true, // 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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false, // backlight_on_high
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false // SH1107_addressing
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);
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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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common_hal_displayio_release_displays();
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}
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