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Adding SparkFun nRF52840 Mini board support.

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jimblom 2018-11-30 13:57:22 -07:00
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ports/nrf/boards/sparkfun_nrf52840_mini/README.md Normal file
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# SparkFun Pro nRF52840 Mini Breakout
The [SparkFun Pro nRF52840 Mini](https://www.sparkfun.com/products/15025) small breakout board for Raytac's MDBT50Q-P1M module, which features an nRF52840. It breaks out as many pins as it can in an Arduino Pro Mini footprint. Also included on the board are a qwiic (I<sup>2</sup>C) connector, LiPo battery charger, and on/off switch.
Note: the SparkFun Pro nRF52840 Mini Breakout does not include a QSPI external flash. Any Python code will need to be stored on the internal flash filesystem.
## CircuitPython Pin Defs
CircuitPython pin definitions try to follow those of the [Arduino Pro Mini](https://www.sparkfun.com/products/11113), which the footprint is based on.
This can be somewhat confusing, especially around the analog pins. Here's a quick pin-map:
<table>
<tr><th>Board pin label</th><th>Digital Pin Reference</th><th>Additional Pin Capabilities</th><th>Pin/Port Reference</th></tr>
<tr><td>17</td><td>D1</td><td>TX</td><td>P0_17</td></tr>
<tr><td>15</td><td>D0</td><td>RX</td><td>P0_15</td></tr>
<tr><td>8</td><td></td><td>SDA</td><td>P0_08</td></tr>
<tr><td>11</td><td></td><td>SCL</td><td>P0_11</td></tr>
<tr><td>19</td><td>D3</td><td></td><td>P0_19</td></tr>
<tr><td>20</td><td>D4</td><td></td><td>P0_20</td></tr>
<tr><td>21</td><td>D5</td><td></td><td>P0_21</td></tr>
<tr><td>22</td><td>D6</td><td></td><td>P0_22</td></tr>
<tr><td>23</td><td>D7</td><td></td><td>P0_23</td></tr>
<tr><td>9</td><td>D8</td><td></td><td>P0_09</td></tr>
<tr><td>10</td><td>D9</td><td></td><td>P0_10</td></tr>
<tr><td>2</td><td>D10</td><td>A0</td><td>P0_02</td></tr>
<tr><td>3</td><td>D11</td><td>MOSI, A1</td><td>P0_03</td></tr>
<tr><td>31</td><td>D12</td><td>MISO, A7</td><td>P0_31</td></tr>
<tr><td>30</td><td>D13</td><td>SCK, A6</td><td>P0_31</td></tr>
<tr><td>29</td><td></td><td>A5</td><td>P0_29</td></tr>
<tr><td>28</td><td></td><td>A4</td><td>P0_28</td></tr>
<tr><td>5</td><td></td><td>A3</td><td>P0_05</td></tr>
<tr><td>4</td><td></td><td>A2</td><td>P0_04</td></tr>
</table>
If a pin isn't defined as D0, D1, etc., standard port/pin references should work -- e.g. `P0_17` is pin 17, `P0_02` is pin 2, etc.
## Bootloader Notes
The nRF52840 Mini ships with a slightly modified (i.e pin defs and USB defs) version of the Adafruit nRF52 bootloader, which supports UF2 and CDC bootloading.
## Hardware Reference
The nRF52840 Mini hardware layout is open source:
* [Schematic](https://cdn.sparkfun.com/assets/learn_tutorials/8/2/0/nrf52840-breakout-mdbt50q-v10.pdf)
* [Eagle Files](https://cdn.sparkfun.com/assets/learn_tutorials/8/2/0/nrf52840-breakout-mdbt50q-v10.zip)
* [Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-pro-nrf52840-mini-hookup-guide)

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ports/nrf/boards/sparkfun_nrf52840_mini/board.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 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 "boards/board.h"
void board_init(void) {
}
bool board_requests_safe_mode(void) {
return false;
}
void reset_board(void) {
}

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ports/nrf/boards/sparkfun_nrf52840_mini/mpconfigboard.h Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Glenn Ruben Bakke
*
* 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 "nrfx/hal/nrf_gpio.h"
#define MICROPY_HW_BOARD_NAME "SparkFun Pro nRF52840 Mini"
#define MICROPY_HW_MCU_NAME "nRF52840"
#define MICROPY_PY_SYS_PLATFORM "SFE_NRF52840_Mini"
#define PORT_HEAP_SIZE (128 * 1024)
#define CIRCUITPY_AUTORELOAD_DELAY_MS 500
#define DEFAULT_I2C_BUS_SCL (&pin_P0_11)
#define DEFAULT_I2C_BUS_SDA (&pin_P0_08)
#define DEFAULT_SPI_BUS_SCK (&pin_P0_30)
#define DEFAULT_SPI_BUS_MOSI (&pin_P0_03)
#define DEFAULT_SPI_BUS_MISO (&pin_P0_31)
#define DEFAULT_UART_BUS_RX (&pin_P0_15)
#define DEFAULT_UART_BUS_TX (&pin_P0_17)
/* Note: Flash chip is not provided on SparkFun nRF52840 Mini.
* Leaving this as a reminder for future/similar versions of the board. */
// Flash operation mode is determined by MICROPY_QSPI_DATAn pin configuration.
// A pin config is valid if it is defined and its value is not 0xFF.
// Quad mode: If all DATA0 --> DATA3 are valid
// Dual mode: If DATA0 and DATA1 are valid while either DATA2 and/or DATA3 are invalid
// Single mode: If only DATA0 is valid
/*#ifdef QSPI_FLASH_FILESYSTEM
#define MICROPY_QSPI_DATA0 NRF_GPIO_PIN_MAP(0, 20)
#define MICROPY_QSPI_DATA1 NRF_GPIO_PIN_MAP(0, 21)
#define MICROPY_QSPI_DATA2 NRF_GPIO_PIN_MAP(0, 22)
#define MICROPY_QSPI_DATA3 NRF_GPIO_PIN_MAP(0, 23)
#define MICROPY_QSPI_SCK NRF_GPIO_PIN_MAP(0, 19)
#define MICROPY_QSPI_CS NRF_GPIO_PIN_MAP(0, 17)
#endif
#ifdef SPI_FLASH_FILESYSTEM
#define SPI_FLASH_MOSI_PIN &pin_P0_20
#define SPI_FLASH_MISO_PIN &pin_P0_21
#define SPI_FLASH_SCK_PIN &pin_P0_19
#define SPI_FLASH_CS_PIN &pin_P0_17
#endif*/

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USB_VID = 0x1B4F
USB_PID = 0x5289
USB_PRODUCT = "SFE_nRF52840_Mini"
USB_MANUFACTURER = "SparkFun Electronics"
MCU_SERIES = m4
MCU_VARIANT = nrf52
MCU_SUB_VARIANT = nrf52840
MCU_CHIP = nrf52840
SD ?= s140
SOFTDEV_VERSION ?= 6.1.0
BOOT_SETTING_ADDR = 0xFF000
ifeq ($(SD),)
LD_FILE = boards/nrf52840_1M_256k.ld
else
LD_FILE = boards/adafruit_$(MCU_SUB_VARIANT)_$(SD_LOWER)_v$(firstword $(subst ., ,$(SOFTDEV_VERSION))).ld
endif
NRF_DEFINES += -DNRF52840_XXAA -DNRF52840
QSPI_FLASH_FILESYSTEM = 0
EXTERNAL_FLASH_DEVICE_COUNT = 0
EXTERNAL_FLASH_DEVICES =

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ports/nrf/boards/sparkfun_nrf52840_mini/pins.c Normal file
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#include "shared-bindings/board/__init__.h"
#include "board_busses.h"
STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR_P0_00), MP_ROM_PTR(&pin_P0_00) },
{ MP_ROM_QSTR(MP_QSTR_P0_01), MP_ROM_PTR(&pin_P0_01) },
{ MP_ROM_QSTR(MP_QSTR_P0_02), MP_ROM_PTR(&pin_P0_02) },
{ MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_P0_02) },
{ MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_P0_02) },
{ MP_ROM_QSTR(MP_QSTR_P0_03), MP_ROM_PTR(&pin_P0_03) },
{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_P0_03) },
{ MP_ROM_QSTR(MP_QSTR_D11), MP_ROM_PTR(&pin_P0_03) },
{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_P0_03) },
{ MP_ROM_QSTR(MP_QSTR_P0_04), MP_ROM_PTR(&pin_P0_04) },
{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_P0_04) },
{ MP_ROM_QSTR(MP_QSTR_P0_05), MP_ROM_PTR(&pin_P0_05) },
{ MP_ROM_QSTR(MP_QSTR_A3), MP_ROM_PTR(&pin_P0_05) },
{ MP_ROM_QSTR(MP_QSTR_P0_06), MP_ROM_PTR(&pin_P0_06) },
{ MP_ROM_QSTR(MP_QSTR_P0_07), MP_ROM_PTR(&pin_P0_07) },
{ MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_P0_07) },
{ MP_ROM_QSTR(MP_QSTR_P0_08), MP_ROM_PTR(&pin_P0_08) },
{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_P0_08) },
{ MP_ROM_QSTR(MP_QSTR_P0_09), MP_ROM_PTR(&pin_P0_09) },
{ MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_P0_09) },
{ MP_ROM_QSTR(MP_QSTR_P0_10), MP_ROM_PTR(&pin_P0_10) },
{ MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_P0_10) },
{ MP_ROM_QSTR(MP_QSTR_P0_11), MP_ROM_PTR(&pin_P0_11) },
{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_P0_11) },
{ MP_ROM_QSTR(MP_QSTR_P0_12), MP_ROM_PTR(&pin_P0_12) },
{ MP_ROM_QSTR(MP_QSTR_P0_13), MP_ROM_PTR(&pin_P0_13) },
{ MP_ROM_QSTR(MP_QSTR_BUTTON1), MP_ROM_PTR(&pin_P0_13) },
{ MP_ROM_QSTR(MP_QSTR_P0_14), MP_ROM_PTR(&pin_P0_14) },
{ MP_ROM_QSTR(MP_QSTR_P0_15), MP_ROM_PTR(&pin_P0_15) },
{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_P0_15) },
{ MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_P1_15) },
{ MP_ROM_QSTR(MP_QSTR_P0_16), MP_ROM_PTR(&pin_P0_16) },
{ MP_ROM_QSTR(MP_QSTR_P0_17), MP_ROM_PTR(&pin_P0_17) },
{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_P0_17) },
{ MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_P0_17) },
// RESET { MP_ROM_QSTR(MP_QSTR_P0_18), MP_ROM_PTR(&pin_P0_18) },
{ MP_ROM_QSTR(MP_QSTR_P0_19), MP_ROM_PTR(&pin_P0_19) },
{ MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_P0_19) },
{ MP_ROM_QSTR(MP_QSTR_P0_20), MP_ROM_PTR(&pin_P0_20) },
{ MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_P0_20) },
{ MP_ROM_QSTR(MP_QSTR_P0_21), MP_ROM_PTR(&pin_P0_21) },
{ MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_P0_21) },
{ MP_ROM_QSTR(MP_QSTR_P0_22), MP_ROM_PTR(&pin_P0_22) },
{ MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_P0_22) },
{ MP_ROM_QSTR(MP_QSTR_P0_23), MP_ROM_PTR(&pin_P0_23) },
{ MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_P0_23) },
{ MP_ROM_QSTR(MP_QSTR_P0_24), MP_ROM_PTR(&pin_P0_24) },
{ MP_ROM_QSTR(MP_QSTR_P0_25), MP_ROM_PTR(&pin_P0_25) },
{ MP_ROM_QSTR(MP_QSTR_P0_26), MP_ROM_PTR(&pin_P0_26) },
{ MP_ROM_QSTR(MP_QSTR_P0_27), MP_ROM_PTR(&pin_P0_27) },
{ MP_ROM_QSTR(MP_QSTR_P0_28), MP_ROM_PTR(&pin_P0_28) },
{ MP_ROM_QSTR(MP_QSTR_A4), MP_ROM_PTR(&pin_P0_28) },
{ MP_ROM_QSTR(MP_QSTR_P0_29), MP_ROM_PTR(&pin_P0_29) },
{ MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_P0_29) },
{ MP_ROM_QSTR(MP_QSTR_P0_30), MP_ROM_PTR(&pin_P0_30) },
{ MP_ROM_QSTR(MP_QSTR_A6), MP_ROM_PTR(&pin_P0_30) },
{ MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_P0_30) },
{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_P0_30) },
{ MP_ROM_QSTR(MP_QSTR_P0_31), MP_ROM_PTR(&pin_P0_31) },
{ MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_P0_31) },
{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_P0_31) },
{ MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_P0_31) },
// Nothing connected to anything on P1 port
{ MP_ROM_QSTR(MP_QSTR_P1_00), MP_ROM_PTR(&pin_P1_00) },
{ MP_ROM_QSTR(MP_QSTR_P1_01), MP_ROM_PTR(&pin_P1_01) },
{ MP_ROM_QSTR(MP_QSTR_P1_02), MP_ROM_PTR(&pin_P1_02) },
{ MP_ROM_QSTR(MP_QSTR_P1_03), MP_ROM_PTR(&pin_P1_03) },
{ MP_ROM_QSTR(MP_QSTR_P1_04), MP_ROM_PTR(&pin_P1_04) },
{ MP_ROM_QSTR(MP_QSTR_P1_05), MP_ROM_PTR(&pin_P1_05) },
{ MP_ROM_QSTR(MP_QSTR_P1_06), MP_ROM_PTR(&pin_P1_06) },
{ MP_ROM_QSTR(MP_QSTR_P1_07), MP_ROM_PTR(&pin_P1_07) },
{ MP_ROM_QSTR(MP_QSTR_P1_08), MP_ROM_PTR(&pin_P1_08) },
{ MP_ROM_QSTR(MP_QSTR_P1_09), MP_ROM_PTR(&pin_P1_09) },
{ MP_ROM_QSTR(MP_QSTR_P1_10), MP_ROM_PTR(&pin_P1_10) },
{ MP_ROM_QSTR(MP_QSTR_P1_11), MP_ROM_PTR(&pin_P1_11) },
{ MP_ROM_QSTR(MP_QSTR_P1_12), MP_ROM_PTR(&pin_P1_12) },
{ MP_ROM_QSTR(MP_QSTR_P1_13), MP_ROM_PTR(&pin_P1_13) },
{ MP_ROM_QSTR(MP_QSTR_P1_14), MP_ROM_PTR(&pin_P1_14) },
{ MP_ROM_QSTR(MP_QSTR_P1_15), MP_ROM_PTR(&pin_P1_15) },
{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
};
MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);