Empty ARM Mbed project for RedBear BLE Nano v2

This project serves as a base for the RedBear BLE Nano v2 device development using ARM mbed OS 5.4 platform.

Building and Flashing the Project

Tooling requirements:

• Install Python 2 and pip. (The steps for installing Python are platform dependent. Installation steps for pip are described in its documentation. But both may already by available on your system.)
• Install the mbed CLI by pip install mbed-cli.
• Download and install the GNU Embedded Toolchain for ARM.
• The mbed and arm-none-eabi-g++ should be available in bash. For this please set the $PATH environment variable.

Short & Quick virtual env setup steps

Most of these steps are in the ubuntu_deps.sh file.

$ cd <navigate to a suitable directory>
$ virtualenv -p python2.7 mbedenv
$ source ./mbedenv/bin/activate

(mbedenv) $ pip install mbed-cli
(mbedenv) $ wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/6-2017q2/gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 -O /tmp/gcc-arm.tar.bz2
(mbedenv) $ mkdir ~/toolchain/
(mdedenv) $ tar -xf /tmp/gcc-arm.tar.bz2 -C ~/toolchain/
(mbedenv) $ export PATH=$HOME/toolchain/gcc-arm-none-eabi-6-2017-q2-update/bin:$HOME/.local/bin/:$PATH

If there is already an existing virtual environment with the mbed-cli installed there is no need to create a new one. However make sure that the PATH environment variable contains the path to the toolchain.

Building project

After the environment is configured the project can be cloned and built with the following steps:

$ git clone https://github.com/elecro/mbed-ble-nanov2-base.git
$ cd mbed-ble-nanov2-base
$ mbed deploy
$ mbed compile

After compile there should be a ./BUILD/RBLAB_BLENANO2/GCC_ARM/mbed-ble-nanov2.hex file which can be copied to the target device via DAPLink (on ubuntu: `/media/$USER/DAPLINK. For example:

$ cp ./BUILD/RBLAB_BLENANO2/GCC_ARM/mbed-ble-nanov2-base.hex /media/student/DAPLINK/

Notes:

• Make sure that the virtual environment is not inside the mbed project directory as the mbed compile command will try to compile all source files in the project but the virtual env sources are not needed.
• The mbed deploy and mbed compile commands should be executed inside the virtual environment in which the mbed-cli was installed.
• mbed deploy is not required before all mbed compile. It is only required if the mbed library dependencies are changed.