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Add support for Electronut Labs Papyr.
Signed-off-by: Tavish Naruka <tavishnaruka@gmail.com>
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‎ports/nrf/README.md‎

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@@ -78,6 +78,7 @@ pca10056 | s140 | Peripheral and Scanner | [S
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feather_nrf52840_express | s140 | Peripheral and Scanner | UF2 bootloader
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makerdiary_nrf52840_mdk | s140 | Peripheral and Scanner | pyocd or ARM mbed DAPLink
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makerdiary_nrf52840_mdk_usb_dongle | s140 | Peripheral and Scanner | DFU bootloader & nrfutil
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electronut_labs_papyr | s140 | Peripheral and Scanner | UF2 bootloader
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## Segger Targets
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‎ports/nrf/boards/electronut_labs_papyr/README.md‎

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# Setup
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The `Electronut Labs Papyr` board is based on the `nRF52840` SoC from
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Nordic Semiconductors. It has an e-ink display on it, along with a CR2477
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battery holder.
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Papyr can be programmed with the [`Adafruit nRF52 bootloader`](https://github.com/adafruit/Adafruit_nRF52_Bootloader) to
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Schematic, datasheet default pin mapping etc. can be found over [here](https://docs.electronut.in/papyr/). The default pin mapping can be found in the board directory.
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## Installing CircuitPython submodules
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Before you can build, you will need to run the following commands once, which
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will install the submodules that are part of the CircuitPython ecosystem, and
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build the `mpy-cross` tool:
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```
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$ cd circuitpython
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$ git submodule update --init
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$ make -C mpy-cross
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```
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## Installing the Bootloader
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If the `Adafruit nRF52 bootloader` is installed on the board, then the
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bootloader allows you to update the core CircuitPython firmware and internal
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file system contents using serial, or USB CDC, or USB mass storage.
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On empty devices, the bootloader will need to be flashed once using a
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HW debugger such as a Segger J-Link, or Blackmagicprobe
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(or [Electronut labs Bumpy](https://docs.electronut.in/bumpy/)).
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## Building and Flashing CircuitPython
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No special notes for this, follow `ports/nrf` generic `README.md`.
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### Flashing CircuitPython with MSC UF2
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`uf2` file is generated last by `all` target.
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```
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$ cd ports/nrf
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$ make V=1 SD=s140 SERIAL=/dev/ttyACM0 BOARD=electronut_labs_papyr all
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...
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...
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python3 ../../tools/uf2/utils/uf2conv.py -f 0xADA52840 -c -o "build-electronut_labs_papyr-s140/firmware.uf2" build-electronut_labs_papyr-s140/firmware.hex
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Converting to uf2, output size: 536576, start address: 0x26000
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Wrote 536576 bytes to build-electronut_labs_papyr-s140/firmware.uf2
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```
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Simply drag and drop firmware.uf2 to the MSC, the nrf52840 will blink fast and reset after done.
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### Other tips
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Once circuitpython is running on your board, it will come up as a mass storage
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device named `CIRCUITPY`, where you can drop in your python code. The file names
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it looks for are `main.py`, `main.txt`, `code.py` or `code.txt`.

‎ports/nrf/boards/electronut_labs_papyr/board.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) 2017 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 "boards/board.h"
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void board_init(void) {
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}
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bool board_requests_safe_mode(void) {
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return false;
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}
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void reset_board(void) {
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}

‎ports/nrf/boards/electronut_labs_papyr/mpconfigboard.h‎

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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) 2016 Glenn Ruben Bakke
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* Copyright (c) 2018 Dan Halbert 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 "nrfx/hal/nrf_gpio.h"
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#define ELECTRONUT_LABS_PAPYR
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#define MICROPY_HW_BOARD_NAME "Electronut Labs Papyr"
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#define MICROPY_HW_MCU_NAME "nRF52840"
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#define MICROPY_PY_SYS_PLATFORM "ElectronutLabsPapyr"
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#define CIRCUITPY_AUTORELOAD_DELAY_MS 500
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// TODO #define CIRCUITPY_INTERNAL_NVM_SIZE 8192
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#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000 - CIRCUITPY_INTERNAL_NVM_SIZE)
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#define BOARD_HAS_CRYSTAL 1
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#define DEFAULT_I2C_BUS_SCL (&pin_P0_06)
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#define DEFAULT_I2C_BUS_SDA (&pin_P0_05)
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#define DEFAULT_SPI_BUS_SCK (&pin_P0_31)
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#define DEFAULT_SPI_BUS_MOSI (&pin_P0_29)
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#define DEFAULT_SPI_BUS_MISO (&pin_P1_01)
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#define DEFAULT_UART_BUS_RX (&pin_P0_07)
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#define DEFAULT_UART_BUS_TX (&pin_P0_08)

‎ports/nrf/boards/electronut_labs_papyr/mpconfigboard.mk‎

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USB_VID = 0x239A
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USB_PID = 0x803C
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USB_PRODUCT = "Papyr"
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USB_MANUFACTURER = "Electronut Labs"
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MCU_SERIES = m4
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MCU_VARIANT = nrf52
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MCU_SUB_VARIANT = nrf52840
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MCU_CHIP = nrf52840
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SD ?= s140
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SOFTDEV_VERSION ?= 6.1.0
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BOOT_SETTING_ADDR = 0xFF000
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ifeq ($(SD),)
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LD_FILE = boards/nrf52840_1M_256k.ld
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else
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LD_FILE = boards/adafruit_$(MCU_SUB_VARIANT)_$(SD_LOWER)_v$(firstword $(subst ., ,$(SOFTDEV_VERSION))).ld
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CIRCUITPY_BLEIO = 1
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endif
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NRF_DEFINES += -DNRF52840_XXAA -DNRF52840

‎ports/nrf/boards/electronut_labs_papyr/pins.c‎

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#include "shared-bindings/board/__init__.h"
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STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_P0_05) },
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{ MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_P0_06) },
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{ MP_ROM_QSTR(MP_QSTR_NFC1), MP_ROM_PTR(&pin_P0_09) },
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{ MP_ROM_QSTR(MP_QSTR_NFC2), MP_ROM_PTR(&pin_P0_10) },
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{ MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_P0_05) },
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{ MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_P0_06) },
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{ MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_P0_07) },
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{ MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_P0_08) },
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{ MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_P0_13) },
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{ MP_ROM_QSTR(MP_QSTR_D14), MP_ROM_PTR(&pin_P0_14) },
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{ MP_ROM_QSTR(MP_QSTR_D15), MP_ROM_PTR(&pin_P0_15) },
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{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_P0_31) },
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{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_P0_29) },
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{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_P1_01) },
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{ MP_ROM_QSTR(MP_QSTR_CS), MP_ROM_PTR(&pin_P0_30) },
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{ MP_ROM_QSTR(MP_QSTR_BUSY), MP_ROM_PTR(&pin_P0_03) },
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{ MP_ROM_QSTR(MP_QSTR_DC), MP_ROM_PTR(&pin_P0_28) },
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{ MP_ROM_QSTR(MP_QSTR_RES), MP_ROM_PTR(&pin_P0_02) },
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{ MP_ROM_QSTR(MP_QSTR_EINK_EN), MP_ROM_PTR(&pin_P0_11) },
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{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_P0_08) },
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{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_P0_07) },
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{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_P0_06) },
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{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_P0_05) },
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{ MP_ROM_QSTR(MP_QSTR_L), MP_ROM_PTR(&pin_P0_14) },
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{ MP_ROM_QSTR(MP_QSTR_RED_LED), MP_ROM_PTR(&pin_P0_14) },
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{ MP_ROM_QSTR(MP_QSTR_BLUE_LED), MP_ROM_PTR(&pin_P0_15) },
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{ MP_ROM_QSTR(MP_QSTR_GREEN_LED), MP_ROM_PTR(&pin_P0_13) },
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{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
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{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
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{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
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};
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MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

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