8000 nrf: Add support for Arduino Nano 33 BLE board. · micropython/micropython@542b992 · GitHub
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nrf: Add support for Arduino Nano 33 BLE board.
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‎ports/nrf/boards/arduino_nano_33_ble_sense/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) 2022 Arduino SA
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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 "nrf.h"
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#include "nrf_gpio.h"
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#include "nrf_rtc.h"
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#define PIN_ENABLE_SENSORS_3V3 (22u)
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#define PIN_ENABLE_I2C_PULLUP (32u)
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#define DFU_MAGIC_SERIAL_ONLY_RESET (0xb0)
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void NANO33_board_early_init(void) {
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// Errata Nano33BLE - I2C pullup is on SWO line, need to disable TRACE
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// was being enabled by nrfx_clock_anomaly_132
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CoreDebug->DEMCR = 0;
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NRF_CLOCK->TRACECONFIG = 0;
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// Bootloader enables interrupt on COMPARE[0], which we don't handle
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// Disable it here to avoid getting stuck when OVERFLOW irq is triggered
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nrf_rtc_event_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK);
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nrf_rtc_int_disable(NRF_RTC1, NRF_RTC_INT_COMPARE0_MASK);
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// Always enable I2C pullup and power on startup
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// Change for maximum powersave
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nrf_gpio_cfg_output(PIN_ENABLE_SENSORS_3V3);
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nrf_gpio_cfg_output(PIN_ENABLE_I2C_PULLUP);
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nrf_gpio_pin_set(PIN_ENABLE_SENSORS_3V3);
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nrf_gpio_pin_set(PIN_ENABLE_I2C_PULLUP);
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}
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void NANO33_board_deinit(void) {
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nrf_gpio_cfg_output(PIN_ENABLE_SENSORS_3V3);
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nrf_gpio_cfg_output(PIN_ENABLE_I2C_PULLUP);
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nrf_gpio_pin_clear(PIN_ENABLE_SENSORS_3V3);
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nrf_gpio_pin_clear(PIN_ENABLE_I2C_PULLUP);
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}
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void NANO33_board_enter_bootloader(void) {
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__disable_irq();
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NRF_POWER->GPREGRET = DFU_MAGIC_SERIAL_ONLY_RESET;
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NVIC_SystemReset();
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}

‎ports/nrf/boards/arduino_nano_33_ble_sense/board.json

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{
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"deploy": [
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"./deploy.md"
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],
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"docs": "",
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"features": [
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"Bluetooth 5.0",
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"IMU LSM9DS1",
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"Humidity sensor HTS221",
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"Pressure sensor LPS22H",
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"Proximity, Light, RGB sensor APDS-9960",
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"Microphone MPM3610",
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"Crypto IC ARM CC310",
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"USB-MICRO",
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"Breadboard Friendly"
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],
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"images": [
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"ABX00031_01.iso_998x749.jpg"
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],
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"mcu": "nRF52840",
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"product": "Arduino Nano 33 BLE Sense",
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"thumbnail": "",
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"url": "https://store.arduino.cc/products/arduino-nano-33-ble-sense",
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"vendor": "Arduino"
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}

‎ports/nrf/boards/arduino_nano_33_ble_sense/deploy.md

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### Update the bootloader
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Before deploying any firmware, make sure you have the updated Arduino Nano 33 BLE bootloader, which relocates the bootloader so the softdevice doesn't overwrite it. Please see:
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https://docs.arduino.cc/tutorials/nano-33-ble/getting-started-omv
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### Via Arduino bootloader and BOSSA
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Download BOSSA from https://github.com/shumatech/BOSSA/ and double tap reset button to enter the Arduino bootloader
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```bash
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bossac -e -w --offset=0x16000 --port=ttyACM0 -i -d -U -R build-arduino_nano_33_ble_sense-s140/firmware.bin
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```
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Alternatively, a Linux binary can be found here: https://github.com/openmv/openmv/blob/master/tools/bossac
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### Via nrfprog
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This board can also be programmed via nrfjprog (with Jlink for example), from MicroPython source repository:
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```bash
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make -j8 BOARD=arduino_nano_33_ble_sense SD=s140 deploy
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```

‎ports/nrf/boards/arduino_nano_33_ble_sense/manifest.py

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include("$(PORT_DIR)/modules/manifest.py")
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freeze("$(MPY_DIR)/drivers/", "hts221.py")
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freeze("$(MPY_DIR)/drivers/", "lps22h.py")
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freeze("$(MPY_DIR)/drivers/", "lsm9ds1.py")

‎ports/nrf/boards/arduino_nano_33_ble_sense/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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* The MIT License (MIT)
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* Copyright (c) 2022 Arduino SA
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*/
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#define MICROPY_HW_BOARD_NAME "Arduino Nano 33 BLE Sense"
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#define MICROPY_HW_MCU_NAME "NRF52840"
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#define MICROPY_MBFS (1)
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#define MICROPY_BOARD_EARLY_INIT NANO33_board_early_init
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#define MICROPY_BOARD_DEINIT NANO33_board_deinit
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#define MICROPY_BOARD_ENTER_BOOTLOADER(nargs, args) NANO33_board_enter_bootloader()
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#define MICROPY_PY_MACHINE_UART (1)
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#define MICROPY_PY_MACHINE_HW_PWM (1)
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#define MICROPY_PY_MACHINE_HW_SPI (1)
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#define MICROPY_PY_MACHINE_TIMER (1)
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#define MICROPY_PY_MACHINE_RTCOUNTER (1)
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#define MICROPY_PY_MACHINE_I2C (1)
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#define MICROPY_PY_MACHINE_ADC (1)
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#define MICROPY_PY_MACHINE_TEMP (1)
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#define MICROPY_HW_USB_CDC (1)
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#define MICROPY_HW_HAS_LED (1)
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#define MICROPY_HW_HAS_SWITCH (0)
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#define MICROPY_HW_HAS_FLASH (0)
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#define MICROPY_HW_HAS_SDCARD (0)
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#define MICROPY_HW_HAS_MMA7660 (0)
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#define MICROPY_HW_HAS_LIS3DSH (0)
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#define MICROPY_HW_HAS_LCD (0)
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#define MICROPY_HW_ENABLE_RNG (1)
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#define MICROPY_HW_ENABLE_RTC (1)
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#define MICROPY_HW_ENABLE_TIMER (0)
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#define MICROPY_HW_ENABLE_SERVO (0)
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#define MICROPY_HW_ENABLE_DAC (0)
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#define MICROPY_HW_ENABLE_CAN (0)
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// LEDs config
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#define MICROPY_HW_LED_COUNT (4) // 3 RGB + 1 Yellow
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#define MICROPY_HW_LED_PULLUP (1) // RGB LED is active low
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#define MICROPY_HW_LED4_PULLUP (0) // Yellow is active high
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#define MICROPY_HW_LED1 (24) // RED
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#define MICROPY_HW_LED2 (16) // GREEN
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#define MICROPY_HW_LED3 (6) // BLUE
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#define MICROPY_HW_LED4 (13) // Yellow
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#define HELP_TEXT_BOARD_LED "1,2,3,4"
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// UART config
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#define MICROPY_HW_UART1_TX (32 + 3)
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#define MICROPY_HW_UART1_RX (32 + 10)
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// #define MICROPY_HW_UART1_CTS (7)
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// #define MICROPY_HW_UART1_RTS (5)
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// #define MICROPY_HW_UART1_HWFC (1)
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// SPI0 config
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#define MICROPY_HW_SPI0_NAME "SPI0"
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#define MICROPY_HW_SPI0_SCK (13)
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#define MICROPY_HW_SPI0_MOSI (32 + 1)
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#define MICROPY_HW_SPI0_MISO (32 + 8)
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// PWM config
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#define MICROPY_HW_PWM0_NAME "PWM0"
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#define MICROPY_HW_PWM1_NAME "PWM1"
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#define MICROPY_HW_PWM2_NAME "PWM2"
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#define MICROPY_HW_PWM3_NAME "PWM3"
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#define MICROPY_HW_USB_VID (0x2341)
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#define MICROPY_HW_USB_PID (0x025A)
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#define MICROPY_HW_USB_CDC_1200BPS_TOUCH (1)
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void NANO33_board_early_init(void);
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void NANO33_board_deinit(void);
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void NANO33_board_enter_bootloader(void);

‎ports/nrf/boards/arduino_nano_33_ble_sense/mpconfigboard.mk

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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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SOFTDEV_VERSION = 6.1.1
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SD=s140
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LD_FILES += boards/arduino_nano_33_ble_sense/nano_bootloader.ld boards/nrf52840_1M_256k.ld
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NRF_DEFINES += -DNRF52840_XXAA
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MICROPY_VFS_LFS2 = 1
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FROZEN_MANIFEST ?= $(BOARD_DIR)/manifest.py

‎ports/nrf/boards/arduino_nano_33_ble_sense/nano_bootloader.ld

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_flash_start = 0xe0000;

‎ports/nrf/boards/arduino_nano_33_ble_sense/pins.csv

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P0,P0
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P1,P1
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P2,P2,ADC0_IN0
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P3,P3,ADC0_IN1
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P4,P4,ADC0_IN2
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P5,P5,ADC0_IN3
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P6,P6
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P7,P7
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P8,P8
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P9,P9
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P10,P10
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P11,P11
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P12,P12
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P13,P13
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P14,P14
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P15,P15
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P16,P16
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P17,P17
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P18,P18
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P19,P19
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P20,P20
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P21,P21
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P22,P22
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P23,P23
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P24,P24
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P25,P25
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P26,P26
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P27,P27
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P28,P28,ADC0_IN4
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P29,P29,ADC0_IN5
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P30,P30,ADC0_IN6
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P31,P31,ADC0_IN7
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P32,P32
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P33,P33
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P34,P34
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P35,P35
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P36,P36
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P37,P37
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P38,P38
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P39,P39
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P40,P40
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P41,P41
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P42,P42
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P43,P43
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P44,P44
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P45,P45
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P46,P46
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P47,P47
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I2C_SCL,P2
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I2C_SDA,P31

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