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Add new nRF port for SF MicroMod nRF52840.

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nitz 2021-03-07 01:06:50 -05:00
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# SparkFun MicroMod nRF52840 Processor
Featuring the nRF52840 SoC from Nordic Semiconductor, the [SparkFun MicroMod nRF52840 Processor](https://www.sparkfun.com/products/16984) offers a powerful combination of ARM Cortex-M4 CPU and 2.4 GHz Bluetooth transceiver in the MicroMod form-factor with the M.2 MicroMod connector to allow you to plug in a compatible MicroMod Carrier Board with any number of peripherals.
The MicroMod nRF52840 Processor features the same Raytac MDBT50Q-P1M found on our [Pro nRF52840 Mini](https://www.sparkfun.com/products/15025). This module includes an integrated trace antenna, fits the IC to an FCC-approved footprint along with including decoupling and timing mechanisms that would need to be designed into a circuit using the bare nRF52840 IC. The Bluetooth transceiver included on the nRF52840 boasts a BT 5.1 stack and supports Bluetooth 5, Bluetooth mesh, IEEE 802.15.4 (Zigbee & Thread) and 2.4Ghz RF wireless protocols (including Nordic's proprietary RF protocol) allowing you to pick which option works best for your application.
We've also routed two I<sup>2</sup>C buses, 2 SPI buses, eleven GPIO, dedicated digital, analog, PWM & PDM pins along with multiple serial UARTS to cover nearly all of your peripheral needs.
## CircuitPython Pin Defs
CircuitPython pin definitions, while simialr to other boards represent a slight departure from just the typical `A` and `D` pin definitions. The majority of general pins are labled as `G` (or alternatively, `BUS`,) as the MicroMod system they build on uses those names to specify pins that may not be specficially analog or digital.
This can be somewhat confusing, especially around the analog pins. Here's a quick pin-map. This pin map will use the label either on the [SparkFun MicroMod ATP Carrier Board](https://www.sparkfun.com/products/16885), or the pin name on the [graphical datasheet](https://cdn.sparkfun.com/assets/learn_tutorials/1/4/0/1/MicroMod_nRF52840_v1.0_Graphical_Datasheet.pdf). Some of the aditional aliases are just names to make naming consistent (e.g.: RTS/CTS), but they also can refer to additional functionality a pin may have (e.g.: NFC pins)
MicroMod Pin # | ATP Pin Label | Pin Definition | Additional Definitons | Pin/Port Reference | Notes
:--------------|:--------------|:--------------|:-----------------------|:-------------------|:------
8 | G11 | | | (Not Connected) |
10 | D0 | D0 | | P0_27 |
11 | BOOT | BOOT | BUTTON1 | P0_07 |
12 | SDA | SDA | | P0_08 |
13 | RTS1 | RTS | RTS1 | P1_02 |
14 | SCL | SCL | | P0_11 |
15 | CTS1 | CTS | CTS1 | P1_09 |
16 | /I2C INT | I2C_INT | P0_15 |
17 | TX | TX | TX1 | P1_03 |
18 | D1 | D1 | CAM_TRIG | P1_08 |
19 | RX | RX | RX1 | P1_10 |
20 | RX2 | RX2 | | P1_05 |
22 | TX2 | TX2 | | P1_07 |
32 | PWM0 | PWM0 | P0_06 |
34 | A0 | A0 | ADC0 | P0_04 | Attached to AIN2
38 | A1 | A1 | ADC1 | P0_05 | Attached to AIN3
40 | G0 | G0 | BUS0 | P0_29 | Attached to AIN5
42 | G1 | G1 | BUS1 | P0_03 | Attached to AIN1
44 | G2 | G2 | BUS2 | P1_13 |
46 | G3 | G3 | BUS3 | P1_12 |
47 | PWM1 | PWM1 | P0_16 |
48 | G4 | G4 | BUS4 | P1_11 |
49 | BATT_VIN | BATT_VIN3 | | P0_30 | Attached to AIN6, will be battery voltage / 3. |
50 | PDM_CLK | PDM_CLK | | P0_25 |
51 | SDA1 | SDA1 | | P1_01 |
52 | PDM_DATA | PDM_DATA | | P0_26 |
53 | SCL1 | SCL1 | | P0_24 |
55 | /CS | CS | | P0_20 |
57 | SCK | SCK | | P0_28 | Attached to AIN4
59 | COPI | COPI | MOSI | P0_31 | Attached to AIN7
61 | CIPO | CIPO | MISO | P0_02 |
63 | G10 | G10 | NFC2, ADC_DP, CAM_VSYNC | P0_10 | Attached to NFC2
65 | G9 | G9 | NFC1, ADC_DM, CAM_HSYNC | P0_09 | Attached to NFC1
67 | G8 | G8 | | P1_14 |
69 | G7 | G7 | BUS7 | P1_04 |
71 | G6 | G6 | BUS6 | P1_06 |
73 | G5 | G5 | BUS5 | P0_15 |
## Peripheral Naming
CircuitPython attempts to stay in line with the naming of the serial peripheral naming in the MicroMod system. The bare UART pins are also named <pin>1. The UART 2 pins are named <pin>2. However, the I2C names on MicroMod are <I2C pin> and <I2C pin>1. Perhaps this will change in the future, but as of [Interface v1](https://cdn.sparkfun.com/assets/learn_tutorials/1/2/0/6/SparkFun_MicroMod_Interface_v1.0_-_Pin_Descriptions.pdf), it may lead to some confusion.
## Bootloader Notes
The MicroMod nRF52840 Processor needs to have the [Adafruit nRF52 UF2 bootloader](https://github.com/adafruit/Adafruit_nRF52_Bootloader/pull/194) flashed on it. [[TODO: LINK TO BUILD]]
## Hardware Reference
The MicroMod nRF52840 Processor hardware layout is open source:
* [Schematic](https://cdn.sparkfun.com/assets/f/0/9/9/e/MicroMod_Processor_Board-nRF52840.pdf)
* [Eagle Files](https://cdn.sparkfun.com/assets/3/0/5/d/a/MicroMod_Processor_Board-nRF52840.zip)
* [Hookup Guide](https://learn.sparkfun.com/tutorials/micromod-nrf52840-processor-hookup-guide)

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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 "supervisor/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_micromod/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
* Copyright (c) 2021 Chris Marc Dailey
*
* 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 MicroMod nRF52840"
#define MICROPY_HW_MCU_NAME "nRF52840"
#define DEFAULT_I2C_BUS_SCL (&pin_P0_11)
#define DEFAULT_I2C_BUS_SDA (&pin_P0_08)
#define DEFAULT_SPI_BUS_SCK (&pin_P0_28)
#define DEFAULT_SPI_BUS_MOSI (&pin_P0_31)
#define DEFAULT_SPI_BUS_MISO (&pin_P0_02)
#define DEFAULT_UART_BUS_RX (&pin_P1_10)
#define DEFAULT_UART_BUS_TX (&pin_P1_03)
#define BOARD_HAS_32KHZ_XTAL (1)
#define BOARD_HAS_CRYSTAL (1)
#if QSPI_FLASH_FILESYSTEM
#define MICROPY_QSPI_DATA0 NRF_GPIO_PIN_MAP(0, 14) // Labeled 'SPI_COPI1/SDIO_CMD' in schematic.
#define MICROPY_QSPI_DATA1 NRF_GPIO_PIN_MAP(0, 21) // Labeled 'SPI_CIPO1/SDIO_DATA0' in schematic.
#define MICROPY_QSPI_DATA2 NRF_GPIO_PIN_MAP(0, 23) // Labeled 'SPI_DATA2' in schematic.
#define MICROPY_QSPI_DATA3 NRF_GPIO_PIN_MAP(1, 0) // Labeled 'SPI_CS1/SDIO_DATA3' in schematic.
#define MICROPY_QSPI_SCK NRF_GPIO_PIN_MAP(0, 19) // Labeled 'SPI_SCK1/SDIO_CLK' in schematic.
#define MICROPY_QSPI_CS NRF_GPIO_PIN_MAP(0, 12) // Labeled 'FLASH_CS' in schematic.
#endif // QSPI_FLASH_FILESYSTEM
#if SPI_FLASH_FILESYSTEM
#define SPI_FLASH_MOSI_PIN (&pin_P0_14)
#define SPI_FLASH_MISO_PIN (&pin_P0_21)
#define SPI_FLASH_SCK_PIN (&pin_P0_19)
#define SPI_FLASH_CS_PIN (&pin_P0_12)
#endif // SPI_FLASH_FILESYSTEM

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USB_VID = 0x1B4F
USB_PID = 0xabcd
$(warning SparkFun nRF52840 MicroMod needss USB PID!)
USB_PRODUCT = "SFE_nRF52840_MicroMod"
USB_MANUFACTURER = "SparkFun Electronics"
MCU_CHIP = nrf52840
QSPI_FLASH_FILESYSTEM = 1
EXTERNAL_FLASH_DEVICE_COUNT = 1
EXTERNAL_FLASH_DEVICES = "W25Q128JV_PM"

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#include "shared-bindings/board/__init__.h"
STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
// D pins (D0-D1)
{ MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_P0_27) }, // 0.27 - D0
{ MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_P1_08) }, // 1.08 - D1 | CAM_TRIG
{ MP_ROM_QSTR(MP_QSTR_CAM_TRIG), MP_ROM_PTR(&pin_P1_08) }, // CAM_TRIG alias
// A pins (A0-A1)
{ MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_P0_04) }, // 0.04 - A0 | ADC0 (AIN2)
{ MP_ROM_QSTR(MP_QSTR_ADC0), MP_ROM_PTR(&pin_P0_04) }, // ADC0 alias
{ MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_P0_05) }, // 0.05 - A1 | ADC1 (AIN3)
{ MP_ROM_QSTR(MP_QSTR_ADC1), MP_ROM_PTR(&pin_P0_05) }, // ADC1 alias
// G pins (G0-G11, G11 NC)
{ MP_ROM_QSTR(MP_QSTR_G0), MP_ROM_PTR(&pin_P0_29) }, // 0.29 - G0 | GPIO0 | BUS0 (AIN5)
{ MP_ROM_QSTR(MP_QSTR_BUS0), MP_ROM_PTR(&pin_P0_29) }, // BUS0 alias
{ MP_ROM_QSTR(MP_QSTR_G1), MP_ROM_PTR(&pin_P0_03) }, // 0.03 - G1 | GPIO1 | BUS1 (AIN1)
{ MP_ROM_QSTR(MP_QSTR_BUS1), MP_ROM_PTR(&pin_P0_03) }, // BUS1 alias
{ MP_ROM_QSTR(MP_QSTR_G2), MP_ROM_PTR(&pin_P1_13) }, // 1.13 - G2 | GPIO2 | BUS2
{ MP_ROM_QSTR(MP_QSTR_BUS2), MP_ROM_PTR(&pin_P1_13) }, // BUS2 alias
{ MP_ROM_QSTR(MP_QSTR_G3), MP_ROM_PTR(&pin_P1_12) }, // 1.12 - G3 | GPIO3 | BUS3
{ MP_ROM_QSTR(MP_QSTR_BUS3), MP_ROM_PTR(&pin_P1_12) }, // BUS3 alias
{ MP_ROM_QSTR(MP_QSTR_G4), MP_ROM_PTR(&pin_P1_11) }, // 1.11 - G4 | GPIO4 | BUS4
{ MP_ROM_QSTR(MP_QSTR_BUS4), MP_ROM_PTR(&pin_P1_11) }, // BUS4 alias
{ MP_ROM_QSTR(MP_QSTR_G5), MP_ROM_PTR(&pin_P0_17) }, // 0.17 - G5 | GPIO5 | BUS5
{ MP_ROM_QSTR(MP_QSTR_BUS5), MP_ROM_PTR(&pin_P0_17) }, // BUS5 alias
{ MP_ROM_QSTR(MP_QSTR_G6), MP_ROM_PTR(&pin_P1_06) }, // 1.06 - G6 | GPIO6 | BUS6
{ MP_ROM_QSTR(MP_QSTR_BUS6), MP_ROM_PTR(&pin_P1_06) }, // BUS6 alias
{ MP_ROM_QSTR(MP_QSTR_G7), MP_ROM_PTR(&pin_P1_04) }, // 1.04 - G7 | GPIO7 | BUS7
{ MP_ROM_QSTR(MP_QSTR_BUS7), MP_ROM_PTR(&pin_P1_04) }, // BUS7 alias
{ MP_ROM_QSTR(MP_QSTR_G8), MP_ROM_PTR(&pin_P1_14) }, // 1.14 - G8 | GPIO8
{ MP_ROM_QSTR(MP_QSTR_G9), MP_ROM_PTR(&pin_P0_09) }, // 0.09 - G9 | GPIO9/NFC1 | ADC_D- | CAM_HSYNC (NFC1)
{ MP_ROM_QSTR(MP_QSTR_NFC1), MP_ROM_PTR(&pin_P0_09) }, // NFC1 alias
{ MP_ROM_QSTR(MP_QSTR_ADC_DM), MP_ROM_PTR(&pin_P0_09) }, // ADC_DM alias
{ MP_ROM_QSTR(MP_QSTR_CAM_HSYNC), MP_ROM_PTR(&pin_P0_09) }, // CAM_HSYNC alias
{ MP_ROM_QSTR(MP_QSTR_G10), MP_ROM_PTR(&pin_P0_10) }, // 0.10 - G10 | GPIO10/NFC2 | ADC_D+ | CAM_VSYNC (NFC2)
{ MP_ROM_QSTR(MP_QSTR_NFC2), MP_ROM_PTR(&pin_P0_10) }, // NFC2 alias
{ MP_ROM_QSTR(MP_QSTR_ADC_DP), MP_ROM_PTR(&pin_P0_10) }, // ADC_DP alias
{ MP_ROM_QSTR(MP_QSTR_CAM_VSYNC), MP_ROM_PTR(&pin_P0_10) }, // CAM_VSYNC alias
// NC - G11
// PWM pins (PWM0-PWM1)
{ MP_ROM_QSTR(MP_QSTR_PWM0), MP_ROM_PTR(&pin_P0_06) }, // 0.06 - PWM0
{ MP_ROM_QSTR(MP_QSTR_PWM1), MP_ROM_PTR(&pin_P0_16) }, // 0.16 - PWM1
// PDM
{ MP_ROM_QSTR(MP_QSTR_PDM_CLK), MP_ROM_PTR(&pin_P0_25) }, // 0.25 - PDM_CLK | AUD_BCLK
{ MP_ROM_QSTR(MP_QSTR_PDM_DATA), MP_ROM_PTR(&pin_P0_26) }, // 0.26 - PDM_DATA | AUD_LRCLK
// Battery Voltage Monitor
{ MP_ROM_QSTR(MP_QSTR_BATT_VIN3), MP_ROM_PTR(&pin_P0_30) }, // 0.30 - BATT_VIN/3 (AIN6)
// I2C
{ MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_P0_08) }, // 0.08 - SDA
{ MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_P0_11) }, // 0.11 - SCL (TRACEDATA2)
{ MP_ROM_QSTR(MP_QSTR_I2C_INT), MP_ROM_PTR(&pin_P0_15) }, // 0.15 - I2C_INT
{ MP_ROM_QSTR(MP_QSTR_SDA1), MP_ROM_PTR(&pin_P1_01) }, // 1.01 - SDA1
{ MP_ROM_QSTR(MP_QSTR_SCL1), MP_ROM_PTR(&pin_P0_24) }, // 0.24 - SCL1
// SPI
{ MP_ROM_QSTR(MP_QSTR_CIPO), MP_ROM_PTR(&pin_P0_02) }, // 0.02 - CIPO | SPI_CIPO
{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_P0_02) }, // MISO alias
{ MP_ROM_QSTR(MP_QSTR_COPI), MP_ROM_PTR(&pin_P0_31) }, // 0.31 - COPI | SPI_COPI (AIN7)
{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_P0_31) }, // MOSI alias
{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_P0_28) }, // 0.28 - SCK | SPI_SCK (AIN4)
{ MP_ROM_QSTR(MP_QSTR_CS), MP_ROM_PTR(&pin_P0_20) }, // 0.20 - /CS | SPI_/CS
// Flash SPI
{ MP_ROM_QSTR(MP_QSTR_IOSCK), MP_ROM_PTR(&pin_P0_19) }, // 0.00 - IOSCK | Flash Serial Clock
{ MP_ROM_QSTR(MP_QSTR_IOCSN), MP_ROM_PTR(&pin_P0_12) }, // 0.00 - IOCSN | Flash /Chip Select
{ MP_ROM_QSTR(MP_QSTR_IO0), MP_ROM_PTR(&pin_P0_14) }, // 0.00 - IO0 | Flash Data 0
{ MP_ROM_QSTR(MP_QSTR_IO1), MP_ROM_PTR(&pin_P0_21) }, // 0.00 - IO1 | Flash Data 1
{ MP_ROM_QSTR(MP_QSTR_IO2), MP_ROM_PTR(&pin_P0_23) }, // 0.00 - IO2 | Flash Data 2
{ MP_ROM_QSTR(MP_QSTR_IO3), MP_ROM_PTR(&pin_P1_00) }, // 0.00 - IO3 | Flash Data 3
// Reset Pin
{ MP_ROM_QSTR(MP_QSTR_RESET), MP_ROM_PTR(&pin_P1_14) }, // 0.18 - /RESET (NRESET)
// LED
{ MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_P0_13) }, // 0.13 - LED_BUILTIN | STAT | Blue LED
// Button
{ MP_ROM_QSTR(MP_QSTR_BUTTON1), MP_ROM_PTR(&pin_P0_07) }, // 0.07 - /BOOT [Active Low] (TRACECLK) - Is button on carriers.
{ MP_ROM_QSTR(MP_QSTR_BOOT), MP_ROM_PTR(&pin_P0_07) }, // BOOT alias
// UART
{ MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_P1_10) }, // 1.10 - UART RX | RX1
{ MP_ROM_QSTR(MP_QSTR_RX1), MP_ROM_PTR(&pin_P1_10) }, // RX1 alias
{ MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_P1_03) }, // 1.03 - UART TX | TX1
{ MP_ROM_QSTR(MP_QSTR_TX1), MP_ROM_PTR(&pin_P1_03) }, // TX1 alias
{ MP_ROM_QSTR(MP_QSTR_CTS), MP_ROM_PTR(&pin_P1_09) }, // 1.09 - UART CTS | CTS1 (TRACEDATA3)
{ MP_ROM_QSTR(MP_QSTR_CTS1), MP_ROM_PTR(&pin_P1_09) }, // CTS1 alias
{ MP_ROM_QSTR(MP_QSTR_RTS), MP_ROM_PTR(&pin_P1_02) }, // 1.02 - UART RTS | RTS1
{ MP_ROM_QSTR(MP_QSTR_RTS1), MP_ROM_PTR(&pin_P1_02) }, // RTS1 alias
{ MP_ROM_QSTR(MP_QSTR_RX2), MP_ROM_PTR(&pin_P1_05) }, // 1.05 - UART RX | RX2
{ MP_ROM_QSTR(MP_QSTR_TX2), MP_ROM_PTR(&pin_P1_07) }, // 1.07 - UART TX | TX2
// Crystal
{ MP_ROM_QSTR(MP_QSTR_XL1), MP_ROM_PTR(&pin_P0_00) }, // 0.00 - XL1 | 32.768kHz Crystal Pin 1
{ MP_ROM_QSTR(MP_QSTR_XL2), MP_ROM_PTR(&pin_P0_01) }, // 0.01 - XL2 | 32.768kHz Crystal Pin 2
// Board Objects
{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
};
MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);