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Composite Design Pattern

According to the GoF book, the intent of the Composite pattern is to “compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions...

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Observer Design Pattern

The Observer Pattern According to the GoF book the Observer pattern “defines a one to many dependency between objects so that when one object changes state, all its dependents are...

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Command Design Pattern

The Command Pattern The Gang of Four’s book gives the following definition of the command pattern: “The Command pattern encapsulates a request as an object, letting you parameterize clients with...

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STM32F4: using the DMA controller

When we want to transfer data to/from a peripheral device to perform I/O operations we generally use memory mapped IO: peripherals’ configuration and control registers are mapped to the microcontroller...