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Nordic nRF5x Support Files

This repository is a starting point and shared code for Nordic nRF5x BLE platforms. This repo is a collection of libraries, SDKs, Softdevices, and Makefiles to be included within other projects using the Nordic platfroms. Pull requests welcome.

The currently supported SDK versions are: 9.0.0, 10.0.0, 11.0.0, 12.2.0.

The currently supported Softdevice versions are: s110_7.3.0, s110_8.0.0, s120_2.1.0, s130_1.0.0, s130_2.0.0, s130_2.0.1.

Usage

First, add this project as a submodule inside of your repo with your nRF5x code.

git submodule add https://github.com/lab11/nrf5x-base

Then write an application for the nRF5x SoC you are using and include a Makefile that looks like this:

PROJECT_NAME = $(shell basename "$(realpath ./)")

APPLICATION_SRCS = $(notdir $(wildcard ./*.c))
# Various C libraries that need to be included
APPLICATION_SRCS += softdevice_handler.c
APPLICATION_SRCS += ble_advdata.c
APPLICATION_SRCS += ble_conn_params.c
APPLICATION_SRCS += app_timer.c
APPLICATION_SRCS += ble_srv_common.c
APPLICATION_SRCS += app_util_platform.c
APPLICATION_SRCS += nrf_drv_common.c
APPLICATION_SRCS += nrf_delay.c
APPLICATION_SRCS += led.c
APPLICATION_SRCS += simple_ble.c
APPLICATION_SRCS += simple_adv.c
# Add other libraries here!

# platform-level headers and source files
LIBRARY_PATHS += ../../include
SOURCE_PATHS += ../../src

# Set the softdevice needed for the application
SOFTDEVICE_MODEL = s110

# Include the main Makefile
NRF_BASE_PATH ?= ../../nrf5x-base
include $(NRF_BASE_PATH)/make/Makefile

An example Makefile is included in this repo as Makefile.example. Copy to your own application directory and modify as desired.

Generally, the expected directory structure for your project is:

    /apps
        /<application 1>
        /<application 2>
        ...
    /src
        various platform-level code (e.g. functions shared between applications)
    /include
        various platform-level headers (e.g. platform pin mappings)
    /nrf5x-base (submodule)

Example Applications

This repo has several example and test applications. See the apps folder.

Supported Features

There are libraries for many common BLE functions in this repo:

  • simple_ble: Quick interface to most common BLE functions
    • BLE Advertisements
      • Device name only
      • Manufacturer data
      • Eddystone
      • Rotating multiple advertisements
    • BLE Services
  • SQL style database (LittleD)
  • RTT Debugging
  • Nordic BLE Serialization
  • Nordic DFU over-the-air reprogramming.

Program a nRF51822

To flash an application to a nRF51822 BLE chip, there is some setup you must do.

  1. Install the arm-none-eabi-gcc compiler.

    On Ubuntu:

     sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
 sudo apt-get update
 sudo apt-get install gcc-arm-embedded

  2. Install the JLink software for your platform. You want the "Software and documentation pack".

  3. Acquire a JLink JTAG programmer. The "EDU" edition works fine.

  4. Program an app! With the JLink box attached to the target board:

     make flash

    will write the app and softdevice to the nRF51822. You can erase a chip with:

     make erase-all

    See the make folder for a complete list of commands.

    Most of our boards use a TagConnect header instead of the way-too-large ARM JTAG header. We use our own adapter, but Segger also makes one.

  5. Upon inital programming, the nRF will enter debug mode, which will prevent the nRF from sleeping and prevent the reset line from working. To fix this, either perform a powerdown/powerup or download nrfjprog from (https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF51822) and run nrfjprog --pinreset

Git Submodules

If you're using submodules in your project, you may want to use this to make git automatically update them: https://gist.github.com/brghena/fc4483a2df83c47660a5

BLE Tools for Other Platforms

When developing a BLE application, several tools exist to make your life easier. The easiest option, if you have access to an android phone, is nRF Master Control Panel. On iOS, LightBlue Explorer has similar or better functionality. Alternatively, noble is a NodeJS library for interacting with BLE that can run from a Linux or Mac computer.

Example Platforms Using nRF5x-base

License

The files in this repository are licensed under the MIT License unless otherwise noted by the local directory's README and license files.