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How to build a hybrid solar/wind energy harvester?

Mutexes and semaphores: the FreeRTOS implementation

Let us start with an interesting quote from the FreeRTOS web site: Binary semaphores are used for both mutual exclusion and synchronisation purposes. The quote clearly makes a distinction between the two use cases we saw in part 1: mutual exclusion: how to serialize access to shared data, and synchronization: how does a producer notify […]


Mutexes and semaphores: two concepts for two different use cases

Introduction There has always been (and there still is) confusion on terminology and usage of mutexes and semaphores. The main reason is that the term ‘semaphore’ has a different meaning depending on the context. We need to distinguish two contexts or levels: the concept and usage level, and the implementation level. This article is about the […]