You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Dan Halbert 065e82015f
merge from 2.2.0 + fix up board defs
5 years ago
..
boards Moved comment to avoid abbreviation 5 years ago
common-hal Added 'mp_raise_NotImplementedError(NULL)' 5 years ago
device nRF52 update with internal file system support 5 years ago
drivers nRF52 update with internal file system support 5 years ago
examples ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
freeze ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
hal added Ctrl+C interrupt 5 years ago
modules nRF52 update with internal file system support 5 years ago
supervisor update uart to remove dependency on machine uart module 5 years ago
.gitignore ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
Makefile spacing clean up 5 years ago
README.md ports/nrf: Add WT51822-S4AT board. 5 years ago
bluetooth_conf.h ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
fatfs_port.c ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
fifo.c nRF52 update with internal file system support 5 years ago
fifo.h nRF52 update with internal file system support 5 years ago
gccollect.c ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
gccollect.h ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
help.c ports/nrf: Align help.c builtin help text to use correct type after upmerge with upstream master. 5 years ago
internal_flash.c nRF52 update with internal file system support 5 years ago
internal_flash.h nRF52 update with internal file system support 5 years ago
mpconfigport.h added Ctrl+C interrupt 5 years ago
mpconfigport.mk merge from 2.2.0 + fix up board defs 5 years ago
mphalport.c update uart to remove dependency on machine uart module 5 years ago
mphalport.h nRF52 update with internal file system support 5 years ago
nrf51_af.csv ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
nrf52_af.csv ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
pin_defs_nrf5.h ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
pin_named_pins.c ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago
qstrdefsport.h ports/nrf: Moving nrf51/52 port to new ports directory 5 years ago

README.md

MicroPython Port To The Nordic Semiconductor nRF Series

This is a port of MicroPython to the Nordic Semiconductor nRF series of chips.

Supported Features

  • UART
  • SPI
  • LEDs
  • Pins
  • ADC
  • I2C
  • PWM (nRF52 only)
  • Temperature
  • RTC (Real Time Counter. Low-Power counter)
  • BLE support including:
    • Peripheral role on nrf51 targets
    • Central role and Peripheral role on nrf52 targets
    • REPL over Bluetooth LE (optionally using WebBluetooth)
    • ubluepy: Bluetooth LE module for MicroPython
    • 1 non-connectable advertiser while in connection

Tested Hardware

Compile and Flash

Prerequisite steps for building the nrf port:

git clone <URL>.git micropython
cd micropython
git submodule update --init
make -C mpy-cross

By default, the PCA10040 (nrf52832) is used as compile target. To build and flash issue the following command inside the ports/nrf/ folder:

make
make flash

Alternatively the target board could be defined:

 make BOARD=pca10040
 make flash

Compile and Flash with Bluetooth Stack

First prepare the bluetooth folder by downloading Bluetooth LE stacks and headers:

 ./drivers/bluetooth/download_ble_stack.sh

If the Bluetooth stacks has been downloaded, compile the target with the following command:

make BOARD=pca10040 SD=s132

The make sd will trigger a flash of the bluetooth stack before that application is flashed. Note that make sd will perform a full erase of the chip, which could cause 3rd party bootloaders to also be wiped.

make BOARD=pca10040 SD=s132 sd

Note: further tuning of features to include in bluetooth or even setting up the device to use REPL over Bluetooth can be configured in the bluetooth_conf.h.

Target Boards and Make Flags

Target Board (BOARD) Bluetooth Stack (SD) Bluetooth Support Flash Util
microbit s110 Peripheral PyOCD
pca10000 s110 Peripheral Segger
pca10001 s110 Peripheral Segger
pca10028 s110 Peripheral Segger
pca10031 s110 Peripheral Segger
wt51822_s4at s110 Peripheral Manual, see datasheet for pinout
pca10040 s132 Peripheral and Central Segger
feather52 s132 Peripheral and Central UART DFU
arduino_primo s132 Peripheral and Central PyOCD
pca10056 Segger

Segger Targets

Install the necessary tools to flash and debug using Segger:

JLink Download

nrfjprog linux-32bit Download

nrfjprog linux-64bit Download

nrfjprog osx Download

nrfjprog win32 Download

note: On Linux it might be required to link SEGGER's libjlinkarm.so inside nrfjprog's folder.

PyOCD/OpenOCD Targets

Install the necessary tools to flash and debug using OpenOCD:

sudo apt-get install openocd
sudo pip install pyOCD

DFU Targets

sudo apt-get install build-essential libffi-dev pkg-config gcc-arm-none-eabi git python python-pip
git clone https://github.com/adafruit/Adafruit_nRF52_Arduino.git
cd Adafruit_nRF52_Arduino/tools/nrfutil-0.5.2/
sudo pip install -r requirements.txt
sudo python setup.py install

make flash and make sd will not work with DFU targets. Hence, dfu-gen and dfu-flash must be used instead.

  • dfu-gen: Generates a Firmware zip to be used by the DFU flash application.
  • dfu-flash: Triggers the DFU flash application to upload the firmware from the generated Firmware zip file.

Example on how to generate and flash feather52 target:

make BOARD=feather52 SD=s132
make BOARD=feather52 SD=s132 dfu-gen
make BOARD=feather52 SD=s132 dfu-flash

Bluetooth LE REPL

The port also implements a BLE REPL driver. This feature is disabled by default, as it will deactivate the UART REPL when activated. As some of the nRF devices only have one UART, using the BLE REPL free's the UART instance such that it can be used as a general UART peripheral not bound to REPL.

The configuration can be enabled by editing the bluetooth_conf.h and set MICROPY_PY_BLE_NUS to 1.

When enabled you have different options to test it:

Other:

  • nRF UART application for IPhone/Android

WebBluetooth mode can also be configured by editing bluetooth_conf.h and set BLUETOOTH_WEBBLUETOOTH_REPL to 1. This will alternate advertisement between Eddystone URL and regular connectable advertisement. The Eddystone URL will point the phone or PC to download WebBluetooth REPL (experimental), which subsequently can be used to connect to the Bluetooth REPL from the PC or Phone browser.