129 lines
4.7 KiB
C
129 lines
4.7 KiB
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/busio/SPI.h"
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#include "shared-bindings/displayio/FourWire.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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#include "supervisor/shared/board.h"
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displayio_fourwire_obj_t board_display_obj;
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// display init sequence from CircuitPython library https://github.com/adafruit/Adafruit_CircuitPython_ST7735R/blob/dfae353330cf051d1f31db9e4b681c8d70900cc5/adafruit_st7735r.py
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uint8_t display_init_sequence[] = {
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// sw reset
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0x01, 0x80, 0x96,
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// sleep out and delay
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0x11, 0x80, 0xFF,
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// _FRMCTR1
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0xB1, 0x03, 0x01, 0x2C, 0x2D,
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// _FRMCTR2
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0xB2, 0x03, 0x01, 0x2C, 0x2D,
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// _FRMCTR3
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0xB3, 0x06, 0x01, 0x2C, 0x2D, 0x01, 0x2C, 0x2D,
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// _INVCTR line inversion
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0xB4, 0x01, 0x07,
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// _PWCTR1 GVDD = 4.7V, 1.0uA
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0xC0, 0x03, 0xA2, 0x02, 0x84,
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// _PWCTR2 VGH=14.7V, VGL=-7.35V
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0xC1, 0x01, 0xC5,
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// _PWCTR3 Opamp current small, Boost frequency
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0xC2, 0x02, 0x0A, 0x00,
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0xC3, 0x02, 0x8A, 0x2A,
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0xC4, 0x02, 0x8A, 0xEE,
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// _VMCTR1 VCOMH = 4V, VOML = -1.1V
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0xC5, 0x01, 0x0E,
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// _INVOFF
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0x20, 0x00,
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// _MADCTL bottom to top refresh
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0x36, 0x01, 0x18,
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// COLMOD - 16 bit color
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0x3A, 0x01, 0x05,
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// _GMCTRP1 Gamma
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0xE0, 0x10, 0x02, 0x1C, 0x07, 0x12, 0x37, 0x32, 0x29, 0x2D, 0x29, 0x25, 0x2B, 0x39, 0x00, 0x01, 0x03, 0x10,
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// _GMCTRN1
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0xE1, 0x10, 0x03, 0x1d, 0x07, 0x06, 0x2E, 0x2C, 0x29, 0x2D, 0x2E, 0x2E, 0x37, 0x3F, 0x00, 0x00, 0x02, 0x10,
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// _NORON
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0x13, 0x80, 0x0A,
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// _DISPON
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0x29, 0x80, 0x64,
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// _MADCTL Default rotation + BGR encoding
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0x36, 0x01, 0xC0,
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};
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void board_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(spi, &pin_GPIO18, &pin_GPIO19, &pin_GPIO16, false);
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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(bus,
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spi,
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&pin_GPIO22, // DC
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&pin_GPIO20, // CS
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&pin_GPIO26, // RST
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30000000,
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0,
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0);
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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(display,
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bus,
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160, // Width
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128, // Height
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0, // column start
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0, // row start
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270, // 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_bytes_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_GPIO17, // backlight pin
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NO_BRIGHTNESS_COMMAND,
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1.0f, // 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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50000); // backlight pwm frequency
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}
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// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
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