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circuitpython/ports/raspberrypi/boards/pimoroni_badger2040/board.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "supervisor/board.h"
#include "mpconfigboard.h"
#include "shared-bindings/busio/SPI.h"
#include "shared-bindings/displayio/FourWire.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "shared-module/displayio/__init__.h"
#include "supervisor/shared/board.h"
#include "badger-shared.h"
digitalio_digitalinout_obj_t enable_pin_obj;
#define DELAY 0x80
enum reg {
PSR = 0x00,
PWR = 0x01,
POF = 0x02,
PFS = 0x03,
PON = 0x04,
PMES = 0x05,
BTST = 0x06,
DSLP = 0x07,
DTM1 = 0x10,
DSP = 0x11,
DRF = 0x12,
DTM2 = 0x13,
LUT_VCOM = 0x20,
LUT_WW = 0x21,
LUT_BW = 0x22,
LUT_WB = 0x23,
LUT_BB = 0x24,
PLL = 0x30,
TSC = 0x40,
TSE = 0x41,
TSR = 0x43,
TSW = 0x42,
CDI = 0x50,
LPD = 0x51,
TCON = 0x60,
TRES = 0x61,
REV = 0x70,
FLG = 0x71,
AMV = 0x80,
VV = 0x81,
VDCS = 0x82,
PTL = 0x90,
PTIN = 0x91,
PTOU = 0x92,
PGM = 0xa0,
APG = 0xa1,
ROTP = 0xa2,
CCSET = 0xe0,
PWS = 0xe3,
TSSET = 0xe5
};
enum PSR_FLAGS {
RES_96x230 = 0b00000000,
RES_96x252 = 0b01000000,
RES_128x296 = 0b10000000,
RES_160x296 = 0b11000000,
LUT_OTP = 0b00000000,
LUT_REG = 0b00100000,
FORMAT_BWR = 0b00000000,
FORMAT_BW = 0b00010000,
SCAN_DOWN = 0b00000000,
SCAN_UP = 0b00001000,
SHIFT_LEFT = 0b00000000,
SHIFT_RIGHT = 0b00000100,
BOOSTER_OFF = 0b00000000,
BOOSTER_ON = 0b00000010,
RESET_SOFT = 0b00000000,
RESET_NONE = 0b00000001
};
enum PWR_FLAGS_1 {
VDS_EXTERNAL = 0b00000000,
VDS_INTERNAL = 0b00000010,
VDG_EXTERNAL = 0b00000000,
VDG_INTERNAL = 0b00000001
};
enum PWR_FLAGS_2 {
VCOM_VD = 0b00000000,
VCOM_VG = 0b00000100,
VGHL_16V = 0b00000000,
VGHL_15V = 0b00000001,
VGHL_14V = 0b00000010,
VGHL_13V = 0b00000011
};
enum BOOSTER_FLAGS {
START_10MS = 0b00000000,
START_20MS = 0b01000000,
START_30MS = 0b10000000,
START_40MS = 0b11000000,
STRENGTH_1 = 0b00000000,
STRENGTH_2 = 0b00001000,
STRENGTH_3 = 0b00010000,
STRENGTH_4 = 0b00011000,
STRENGTH_5 = 0b00100000,
STRENGTH_6 = 0b00101000,
STRENGTH_7 = 0b00110000,
STRENGTH_8 = 0b00111000,
OFF_0_27US = 0b00000000,
OFF_0_34US = 0b00000001,
OFF_0_40US = 0b00000010,
OFF_0_54US = 0b00000011,
OFF_0_80US = 0b00000100,
OFF_1_54US = 0b00000101,
OFF_3_34US = 0b00000110,
OFF_6_58US = 0b00000111
};
enum PFS_FLAGS {
FRAMES_1 = 0b00000000,
FRAMES_2 = 0b00010000,
FRAMES_3 = 0b00100000,
FRAMES_4 = 0b00110000
};
enum TSE_FLAGS {
TEMP_INTERNAL = 0b00000000,
TEMP_EXTERNAL = 0b10000000,
OFFSET_0 = 0b00000000,
OFFSET_1 = 0b00000001,
OFFSET_2 = 0b00000010,
OFFSET_3 = 0b00000011,
OFFSET_4 = 0b00000100,
OFFSET_5 = 0b00000101,
OFFSET_6 = 0b00000110,
OFFSET_7 = 0b00000111,
OFFSET_MIN_8 = 0b00001000,
OFFSET_MIN_7 = 0b00001001,
OFFSET_MIN_6 = 0b00001010,
OFFSET_MIN_5 = 0b00001011,
OFFSET_MIN_4 = 0b00001100,
OFFSET_MIN_3 = 0b00001101,
OFFSET_MIN_2 = 0b00001110,
OFFSET_MIN_1 = 0b00001111
};
enum PLL_FLAGS {
// other frequency options exist but there doesn't seem to be much
// point in including them - this is a fair range of options...
HZ_29 = 0b00111111,
HZ_33 = 0b00111110,
HZ_40 = 0b00111101,
HZ_50 = 0b00111100,
HZ_67 = 0b00111011,
HZ_100 = 0b00111010,
HZ_200 = 0b00111001
};
// This is an UC8151 control chip. The display is a 2.9" grayscale EInk.
const uint8_t display_start_sequence[] = {
PWR, 5, VDS_INTERNAL | VDG_INTERNAL, VCOM_VD | VGHL_16V, 0b101011, 0b101011, 0b101011, // power setting
PON, DELAY, 200, // power on and wait 200 ms
BTST, 3, (START_10MS | STRENGTH_3 | OFF_6_58US), (START_10MS | STRENGTH_3 | OFF_6_58US), (START_10MS | STRENGTH_3 | OFF_6_58US),
PSR, 1, (RES_128x296 | LUT_REG | FORMAT_BW | SCAN_UP | SHIFT_RIGHT | BOOSTER_ON | RESET_NONE),
PFS, 1, FRAMES_1,
TSE, 1, TEMP_INTERNAL | OFFSET_0,
TCON, 1, 0x22, // tcon setting
CDI, 1, 0b01001100, // vcom and data interval
PLL, 1, HZ_100, // PLL set to 100 Hz
// Look up tables for voltage sequence for pixel transition
// Common voltage
LUT_VCOM, 44,
0x00, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x23, 0x23, 0x00, 0x00, 0x02,
0x00, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
// White to white
LUT_WW, 42,
0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// Black to white
LUT_BW, 42,
0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// White to black
LUT_WB, 42,
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// Black to black
LUT_BB, 42,
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
const uint8_t display_stop_sequence[] = {
POF, 0x00 // Power off
};
void board_init(void) {
// Drive the EN_3V3 pin high so the board stays awake on battery power
enable_pin_obj.base.type = &digitalio_digitalinout_type;
common_hal_digitalio_digitalinout_construct(&enable_pin_obj, &pin_GPIO10);
common_hal_digitalio_digitalinout_switch_to_output(&enable_pin_obj, true, DRIVE_MODE_PUSH_PULL);
// Never reset
common_hal_digitalio_digitalinout_never_reset(&enable_pin_obj);
// Set up the SPI object used to control the display
busio_spi_obj_t *spi = &displays[0].fourwire_bus.inline_bus;
common_hal_busio_spi_construct(spi, &pin_GPIO18, &pin_GPIO19, &pin_GPIO16, false);
common_hal_busio_spi_never_reset(spi);
// Set up the DisplayIO pin object
displayio_fourwire_obj_t *bus = &displays[0].fourwire_bus;
bus->base.type = &displayio_fourwire_type;
common_hal_displayio_fourwire_construct(bus,
spi,
&pin_GPIO20, // EPD_DC Command or data
&pin_GPIO17, // EPD_CS Chip select
&pin_GPIO21, // EPD_RST Reset
1200000, // Baudrate
0, // Polarity
0); // Phase
// Set up the DisplayIO epaper object
displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
display->base.type = &displayio_epaperdisplay_type;
common_hal_displayio_epaperdisplay_construct(
display,
bus,
display_start_sequence, sizeof(display_start_sequence),
display_stop_sequence, sizeof(display_stop_sequence),
296, // width
128, // height
160, // ram_width
296, // ram_height
0, // colstart
0, // rowstart
270, // rotation
NO_COMMAND, // set_column_window_command
NO_COMMAND, // set_row_window_command
NO_COMMAND, // set_current_column_command
NO_COMMAND, // set_current_row_command
DTM2, // write_black_ram_command
true, // black_bits_inverted
DTM1, // write_color_ram_command
false, // color_bits_inverted
0x000000, // highlight_color
DRF, // refresh_display_command
1.0, // refresh_time
&pin_GPIO26, // busy_pin
false, // busy_state
2.0, // seconds_per_frame
false, // always_toggle_chip_select
false, // grayscale
false); // two_byte_sequence_length
}
bool board_requests_safe_mode(void) {
return false;
}
void reset_board(void) {
}
void board_deinit(void) {
displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
if (display->base.type == &displayio_epaperdisplay_type) {
size_t i = 0;
while (common_hal_displayio_epaperdisplay_get_busy(display)) {
RUN_BACKGROUND_TASKS;
i++;
}
}
common_hal_displayio_release_displays();
}
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