The following instructions can be used to develop an application using Zephyr and program it on to a suitable board.
Zephyr requires a 64 bit version of Linux. In order to run a 64 bit version of Linux in a Virtual Machine, your computer must be capable of 64 bit virtualization. This may require changing a setting in your BIOS. A web search of your particular model should help clarify if your machine is capable of 64 bit virtualization and if any steps are required to enable this feature.
More details on setting up a Linux Virtual Machine on Windows can be found here: https://www.storagecraft.com/blog/the-dead-simple-guide-to-installing-a-linux-virtual-machine-on-windows/
There are several different programs for virtual machines. Oracle Virtual Box was chosen as it is fairly popular, free, and cross-platform.
Zephyr requires a 64 bit version of Linux.
These instructions were developed using a Xubuntu distribution (https://xubuntu.org/) but should work equally well for other Linux distributions. A lightweight distribution may improve performance on a host machine with limited resources.
In Oracle Virtual Box, Create a new Virtual Machine.
Note: If the versions only list 32 bit, your system may not be capable of virtualizing a 64 bit system or you may need to enable the option in the BIOS. Consult the Google.
In Oracle Virtual Box, start the Virtual Machine you created in the last session. You should be prompted to select a start-up disc.
It may be convenient to create a shared folder between your Windows machine and your Linux virtual machine:
Install Guest Tools:
Add permission for user to shared folder:
You can now add and configure a shared folder in Oracle Virtual Machine.
The following instructions are largely based on Instructions for Setting up the Development Environment Setup on Linux: https://www.zephyrproject.org/doc/getting_started/installation_linux.html
Open a terminal, and update the os:
Install necessary packages:
Install serial communication program:
Optional - check tags:
Checkout version 3.8.2
Optional - It may be necessary to check to see if the newly installed CMake is going to be called correctly:
For SDK Version 0.9.2 :
Navigate to the Zephyr source code directory (e.g. /home/zephyr) and install required Python packages:
The following instructions are some specific steps for programming the B-L475E-IOT01A Discovery kit board.
Zephyr Project Page:
Load rules from St Link firmware upgrade:
Copy rules from stsw-link007/AllPlatforms/StlinkRulesFilesForLinux over to /etc/udev/rules.d
By default, you need to explicitly allow the virtual machine to connect to USB devices.
Connect the board to your computer using the USB cable. Make sure to connect to the jack marked “USB STLINK” (Not the USB OTG jack)
Enabled the connection in Oracle Virtual Box:
Set build variables:
Navigate to Zephyr directory:
Set build environment:
Navigate to Hello world code:
Build code for the corresponding board configuration:
If it isn't already, connect the board to your computer using the USB cable. Make sure you've configured the Virtual Machine access to the USB device as described above.
Flash the board with the program:
Run a serial host program to connect with your board. You may want to execute these in a second terminal:
Press the reset button on the board. If all has gone well, you should see:
Hello World! arm