If the complexity of the system increases, and the software has to manage multiple peripherals and events at the same time, it is more convenient to rely on an operating system to coordinate and synchronize all the different operations. Separating the application logic into different threads offers a few important architectural advantages. Each component performs the designed operation within its own running unit, and it may release the CPU while it is suspended, waiting for input or a timeout event.
In this chapter, the mechanisms used to implement a multithreading embedded operating system are observed, through the development of a minimalistic operating system, tailored to the reference platform, and written ...
