103 lines
3.9 KiB
C
103 lines
3.9 KiB
C
/*
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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 microDev
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* Copyright (c) 2021 skieast/Bruce Segal
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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 "shared-bindings/board/__init__.h"
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#include "shared-bindings/displayio/I2CDisplay.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 "shared-bindings/busio/I2C.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "supervisor/board.h"
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#include "supervisor/shared/board.h"
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#include "shared-bindings/board/__init__.h"
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uint8_t display_init_sequence[] = { // SSD1306
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0xAE, 0, // DISPLAY_OFF
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0x20, 1, 0x00, // Set memory addressing to horizontal mode.
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0x81, 1, 0xcf, // set contrast control
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0xA1, 0, // Column 127 is segment 0
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0xA6, 0, // Normal display
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0xc8, 0, // Normal display
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0xA8, 1, 0x3f, // Mux ratio is 1/64
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0xd5, 1, 0x80, // Set divide ratio
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0xd9, 1, 0xf1, // Set pre-charge period
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0xda, 1, 0x12, // Set com configuration
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0xdb, 1, 0x40, // Set vcom configuration
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0x8d, 1, 0x14, // Enable charge pump
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0xAF, 0, // DISPLAY_ON
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};
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void board_init(void) {
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busio_i2c_obj_t *i2c = common_hal_board_create_i2c(0);
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// What we would do if it wasn't the shared board I2C: (for reference)
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// busio_i2c_obj_t *i2c = &displays[0].i2cdisplay_bus.inline_bus;
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// common_hal_busio_i2c_construct(i2c, &pin_GPIO23, &pin_GPIO22, 100000, 0);
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// common_hal_busio_i2c_never_reset(i2c);
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displayio_i2cdisplay_obj_t *bus = &displays[0].i2cdisplay_bus;
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bus->base.type = &displayio_i2cdisplay_type;
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common_hal_displayio_i2cdisplay_construct(bus,
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i2c,
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0x3c,
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NULL
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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(display,
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bus,
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72, // Width
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40, // Height
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28, // column start
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28, // row start
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0, // rotation
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1, // Color depth
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true, // grayscale
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false, // pixels in byte share row. Only used with depth < 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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0x21, // Set column command
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0x22, // Set row command
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44, // Write ram command
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display_init_sequence,
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sizeof(display_init_sequence),
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NULL, // no backlight pin
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0x81, // brightness command
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1.0f, // brightness
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true, // single_byte_bounds
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true, // 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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0); // 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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