Did you know you have options when it comes to creating mocks for your C-language unit tests?
I've been spending a lot of time working with CMock -- since it's used by Ceedling -- but I've just been checking out FFF (the "fake function framework"). It's well done and I think it deserves a closer look. Read More
How can you unit test your embedded software? What about your hardware dependencies?
The secret is mocking.
We can mock the interfaces to our hardware so that we don't need the actual hardware to test. Read More
The first principle behind the Agile Manifesto is:
Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.
It's the highest priority! This has got to be really important, but why? What good is delivering software that can't do everything the customer wants? Well... Read More
If you're on board with unit testing, but not quite sure about test-driven development, I want to share my experience for why I think writing the tests first is the way to go. Read More
For embedded test-driven development in C, you need to use a unit test framework to make testing easier. This can take some work to set up. I've created a reproducible environment with Vagrant that you can start using in just a few simple steps. Read More
All of your source code is in your version control system, but what about your build environment?
If your development machine crashed, would you be able to recreate your build environment? Read More
Unit testing is not widely used in embedded software, but it should be. In my experience the best way to learn is to start writing some unit tests right now. Read More
Maybe you've heard of Test-Driven Development (TDD), and maybe you've even thought it seemed like a reasonable idea. If you haven't tried TDD yet though, you really should. Here's some help to get you started right now. Read More
Every embedded processor vendor now has it's own IDE (e.g. MPLAB, Code Composer Studio, etc.) available to embedded software developers, but you shouldn't use it to compile and build your project. Here's why. Read More
When using a build system for building embedded C applications, we want to be able to automatically track our source file dependencies. This allows us do incremental builds, where each time we build we only build what is necessary based on what has changed. This saves us time... Read More
In this example we'll set up a simple build system for a C application to be complied with gcc. Using a similar method, we could use a cross-compliler (gcc or otherwise) to compile for whatever embedded target we would like. Read More
Make has been traditionally been used for building embedded applications written in C. However Make has its issues. For example, it suffers from heavy reliance upon the host environment, arcane syntax and mysterious bugs due to whitespace issues. Read More