Embedded programming has a long history of making devices do what people need. However, it remains largely overshadowed by application programming. When application programmers were embracing relatively high-level object-oriented languages like C++ or Java, or graphical application development environments like MATLAB, embedded programmers were only moving from into C. They were always outnumbered by app programmers. Today, even hobbyists can develop an app using an easy language and share it with the world, while embedded programmers need to have deep knowledge of hardware and firmware, and how to write programs that can execute in often highly resource-constrained environments.

Source: Embedded Programming for the Internet of Things | IoT for All