212 lines
7.2 KiB
C
212 lines
7.2 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) 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/busio/SPI.h"
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#include "shared-bindings/displayio/FourWire.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 "supervisor/shared/board.h"
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#include "components/log/include/esp_log.h"
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static const char *TAG = "board";
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#define DELAY 0x80
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// This is an ILO373 control chip. The display is a 2.9" grayscale EInk.
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const uint8_t display_start_sequence[] = {
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0x01, 5, 0x03, 0x00, 0x2b, 0x2b, 0x13, // power setting
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0x06, 3, 0x17, 0x17, 0x17, // booster soft start
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0x04, DELAY, 200, // power on and wait 200 ms
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0x00, 1, 0x7f, // panel setting
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0x50, 1, 0x97, // CDI setting
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0x30, 1, 0x3c, // PLL set to 50 Hx (M = 7, N = 4)
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0x61, 3, 0x80, 0x01, 0x28, // Resolution
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0x82, DELAY | 1, 0x12, 50, // VCM DC and delay 50ms
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// Look up tables for voltage sequence for pixel transition
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// Common voltage
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0x20, 0x2a,
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0x00, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x60, 0x14, 0x14, 0x00, 0x00, 0x01,
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0x00, 0x14, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x13, 0x0a, 0x01, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// White to white
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0x21, 0x2a,
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0x40, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x90, 0x14, 0x14, 0x00, 0x00, 0x01,
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0x10, 0x14, 0x0a, 0x00, 0x00, 0x01,
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0xa0, 0x13, 0x01, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// Black to white
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0x22, 0x2a,
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0x40, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x90, 0x14, 0x14, 0x00, 0x00, 0x01,
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0x00, 0x14, 0x0a, 0x00, 0x00, 0x01,
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0x99, 0x0c, 0x01, 0x03, 0x04, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// White to black
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0x23, 0x2a,
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0x40, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x90, 0x14, 0x14, 0x00, 0x00, 0x01,
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0x00, 0x14, 0x0a, 0x00, 0x00, 0x01,
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0x99, 0x0b, 0x04, 0x04, 0x01, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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// Black to black
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0x24, 0x2a,
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0x80, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x90, 0x14, 0x14, 0x00, 0x00, 0x01,
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0x20, 0x14, 0x0a, 0x00, 0x00, 0x01,
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0x50, 0x13, 0x01, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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const uint8_t display_stop_sequence[] = {
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0x50, 0x01, 0x17, // CDI Setting
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0x82, 0x01, 0x00, // VCM DC to -0.1V
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0x02, 0x00 // Power off
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};
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const uint8_t refresh_sequence[] = {
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0x12, 0x00
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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_GPIO43);
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common_hal_never_reset_pin(&pin_GPIO44);
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#endif /* DEBUG */
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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_GPIO36, &pin_GPIO35, NULL, 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_GPIO7, // EPD_DC Command or data
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&pin_GPIO8, // EPD_CS Chip select
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&pin_GPIO6, // EPD_RST Reset
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4000000, // Baudrate
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0, // Polarity
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0); // Phase
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displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
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display->base.type = &displayio_epaperdisplay_type;
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common_hal_displayio_epaperdisplay_construct(
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display,
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bus,
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display_start_sequence, sizeof(display_start_sequence),
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0, // start up time
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display_stop_sequence, sizeof(display_stop_sequence),
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296, // width
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128, // height
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160, // ram_width
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296, // ram_height
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0, // colstart
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0, // rowstart
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270, // rotation
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NO_COMMAND, // set_column_window_command
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NO_COMMAND, // set_row_window_command
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NO_COMMAND, // set_current_column_command
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NO_COMMAND, // set_current_row_command
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0x10, // write_black_ram_command
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false, // black_bits_inverted
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0x13, // write_color_ram_command
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false, // color_bits_inverted
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0x000000, // highlight_color
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refresh_sequence, sizeof(refresh_sequence),
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1.0, // refresh_time
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&pin_GPIO5, // busy_pin
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false, // busy_state
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5.0, // seconds_per_frame
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false, // always_toggle_chip_select
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true, // grayscale
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false, // acep
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false); // two_byte_sequence_length
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}
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bool espressif_board_reset_pin_number(gpio_num_t pin_number) {
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// Pin 16 is speaker enable and it's pulled down on the board. We don't want
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// to pull it high because then we'll compete with the external pull down.
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// So, reset without any pulls internally.
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if (pin_number == 16) {
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gpio_config_t cfg = {
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.pin_bit_mask = BIT64(16),
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.mode = GPIO_MODE_DISABLE,
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// The pin is externally pulled down, so we don't need to pull it.
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.pull_up_en = false,
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.pull_down_en = false,
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.intr_type = GPIO_INTR_DISABLE,
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};
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gpio_config(&cfg);
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return true;
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}
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// Pin 4 is used for voltage monitoring, so don't reset
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if (pin_number == 4) {
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return true;
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}
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return false;
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}
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void board_deinit(void) {
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displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
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if (display->base.type == &displayio_epaperdisplay_type) {
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size_t i = 0;
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while (common_hal_displayio_epaperdisplay_get_busy(display)) {
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RUN_BACKGROUND_TASKS;
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i++;
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}
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ESP_LOGI(TAG, "waited %d iterations for display", i);
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} else {
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ESP_LOGI(TAG, "didn't wait for display");
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}
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common_hal_displayio_release_displays();
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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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