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| 1 | +/* |
| 2 | + * This file is part of the MicroPython project, http://micropython.org/ |
| 3 | + * |
| 4 | + * The MIT License (MIT) |
| 5 | + * |
| 6 | + * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries |
| 7 | + * |
| 8 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 9 | + * of this software and associated documentation files (the "Software"), to deal |
| 10 | + * in the Software without restriction, including without limitation the rights |
| 11 | + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 12 | + * copies of the Software, and to permit persons to whom the Software is |
| 13 | + * furnished to do so, subject to the following conditions: |
| 14 | + * |
| 15 | + * The above copyright notice and this permission notice shall be included in |
| 16 | + * all copies or substantial portions of the Software. |
| 17 | + * |
| 18 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 21 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 22 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 23 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 24 | + * THE SOFTWARE. |
| 25 | + */ |
| 26 | + |
| 27 | +#include "supervisor/board.h" |
| 28 | +#include "mpconfigboard.h" |
| 29 | +#include "shared-bindings/busio/SPI.h" |
| 30 | +#include "shared-bindings/displayio/FourWire.h" |
| 31 | +#include "shared-bindings/microcontroller/Pin.h" |
| 32 | +#include "shared-module/displayio/__init__.h" |
| 33 | +#include "shared-module/displayio/mipi_constants.h" |
| 34 | +#include "shared-bindings/board/__init__.h" |
| 35 | + |
| 36 | +displayio_fourwire_obj_t board_display_obj; |
| 37 | + |
| 38 | + |
| 39 | +// display init sequence according to M5Gfx |
| 40 | +uint8_t display_init_sequence[] = { |
| 41 | + 0x01,0x80,0x80, // Software reset then delay 0x80 (128ms) |
| 42 | + 0xC8,0x03,0xFF,0x93,0x42, // Turn on the external command |
| 43 | + 0xC0,0x02,0x12, 0x12, // Power Control 1 |
| 44 | + 0xC1,0x01,0x03, // Power Control 2 |
| 45 | + 0xC5,0x01,0xF2, // VCOM Control 1 |
| 46 | + 0xB0,0x01,0xE0, // RGB Interface SYNC Mode |
| 47 | + 0xF6,0x03,0x01, 0x00, 0x00, // Interface control |
| 48 | + 0XE0,0x0F,0x00,0x0C,0x11,0x04,0x11,0x08,0x37,0x89,0x4C,0x06,0x0C,0x0A,0x2E,0x34,0x0F, // Positive Gamma Correction |
| 49 | + 0xE1,0x0F,0x00,0x0B,0x11,0x05,0x13,0x09,0x33,0x67,0x48,0x07,0x0E,0x0B,0x2E,0x33,0x0F, // Negative Gamma Correction |
| 50 | + 0xB6,0x04,0x08,0x82,0x1D,0x04, // Display Function Control |
| 51 | + 0x3A,0x01,0x55, // COLMOD: Pixel Format Set 16 bit |
| 52 | + 0x21,0x00, // Display inversion ON |
| 53 | + 0x36,0x01,0x08, // Memory Access Control: RGB order |
| 54 | + 0x11,0x80,0x78, // Exit Sleep then delay 0x78 (120ms) |
| 55 | + 0x29,0x80,0x78, // Display on then delay 0x78 (120ms) |
| 56 | +}; |
| 57 | + |
| 58 | +void board_init(void) { |
| 59 | + busio_spi_obj_t *spi = common_hal_board_create_spi(0); |
| 60 | + displayio_fourwire_obj_t *bus = &displays[0].fourwire_bus; |
| 61 | + bus->base.type = &displayio_fourwire_type; |
| 62 | + |
| 63 | + common_hal_displayio_fourwire_construct( |
| 64 | + bus, |
| 65 | + spi, |
| 66 | + &pin_GPIO27, // DC |
| 67 | + &pin_GPIO14, // CS |
| 68 | + &pin_GPIO33, // RST |
| 69 | + 40000000, // baudrate |
| 70 | + 0, // polarity |
| 71 | + 0 // phase |
| 72 | + ); |
| 73 | + |
| 74 | + displayio_display_obj_t *display = &displays[0].display; |
| 75 | + display->base.type = &displayio_display_type; |
| 76 | + |
| 77 | + common_hal_displayio_display_construct( |
| 78 | + display, |
| 79 | + bus, |
| 80 | + 320, // width (after rotation) |
| 81 | + 240, // height (after rotation) |
| 82 | + 0, // column start |
| 83 | + 0, // row start |
| 84 | + 0, // rotation |
| 85 | + 16, // color depth |
| 86 | + false, // grayscale |
| 87 | + false, // pixels in a byte share a row. Only valid for depths < 8 |
| 88 | + 1, // bytes per cell. Only valid for depths < 8 |
| 89 | + false, // reverse_pixels_in_byte. Only valid for depths < 8 |
| 90 | + true, // reverse_pixels_in_word |
| 91 | + MIPI_COMMAND_SET_COLUMN_ADDRESS, // set column command |
| 92 | + MIPI_COMMAND_SET_PAGE_ADDRESS, // set row command |
| 93 | + MIPI_COMMAND_WRITE_MEMORY_START, // write memory command |
| 94 | + display_init_sequence, |
| 95 | + sizeof(display_init_sequence), |
| 96 | + &pin_GPIO32, // backlight pin |
| 97 | + NO_BRIGHTNESS_COMMAND, |
| 98 | + 1.0f, // brightness |
| 99 | + false, // single_byte_bounds |
| 100 | + false, // data_as_commands |
| 101 | + true, // auto_refresh |
| 102 | + 61, // native_frames_per_second |
| 103 | + true, // backlight_on_high |
| 104 | + false, // SH1107_addressing |
| 105 | + 50000 // backlight pwm frequency |
| 106 | + ); |
| 107 | + |
| 108 | +} |
| 109 | + |
| 110 | +bool espressif_board_reset_pin_number(gpio_num_t pin_number) { |
| 111 | + // Set speaker gpio to ground to prevent noise from the speaker |
| 112 | + if (pin_number == 25) { |
| 113 | + gpio_set_direction(pin_number, GPIO_MODE_DEF_OUTPUT); |
| 114 | + gpio_set_level(pin_number, false); |
| 115 | + return true; |
| 116 | + } |
| 117 | + return false; |
| 118 | +} |
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