Monthly Archives: June 2010

A Simple Task Manager

I’ve been working on a new microcontroller project this week and it got me thinking about task schedulers and real time operating systems (RTOSs). I define a microcontroller as a small CPU with a little bit of RAM and FLASH such as a PIC or Cortex-M0. Software designers get carried away when it comes to managing tasks and think that a context switching RTOS makes sense because that’s how it’s done on regular computers (PCs). RTOS’s do make sense in large systems where anyone’s code can be executed and the product designer has no control. But in small microcontroller designs they are overkill.

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