Design Patterns

Object design patterns

Half Call Design Pattern

Half Call Design Pattern is covered here. This pattern is applicable in scenarios where protocol interworking has to be supported.

Manager Design Pattern

Manager Design Pattern is used to control multiple entities.

Resource Manager Design Pattern

Resource Manager Design Pattern is used to implement a simple but powerful resource management framework.

Message Factory and Message Interface Design Pattern

Message Interface Design Pattern decouples the software from its external interfaces and supports backward compatibility.

Publish-Subscribe Design Pattern

Decoupling of publisher and subscriber of information can be achieved by applying these design patterns.

State Design Patterns

Hierarchical State Machine

Hierarchical State Machine design is introduced and compared with conventional state design. 

State Machine Inheritance

This article discusses several ways in which new state machines can be defined by inheriting from existing state machines.

Collector State Pattern

This state pattern is used when the recipient has to collect similar messages before it can initiate action.

Parallel Wait State Pattern

State pattern for handling events in parallel.

Serial Wait State Pattern

State pattern for handling events in a sequence.

Hardware Design Patterns

Serial Port Design Pattern

This design pattern is described in terms of a class that completely encapsulates the interface with a serial port device.

High Speed Serial Port Design Pattern

We consider the design of a DMA based high speed serial interface. The classes involved in this pattern interact with the device to setup buffers for DMA operations.

Hardware Design Pattern

Encapsulate the hardware device register access in a class.

Synchronizer Pattern

The Synchronizer Design Pattern is used to look at the raw incoming bit or byte stream and detect and align to the frame structure. The frame structure is detected by searching for a sync pattern in the frame.

Protocol Design Patterns

Transmit Protocol Handler Design Pattern

Sliding window transmit protocol design pattern is described here.

Receive Protocol Handler Design Pattern

Sliding window receive protocol design pattern is described here.

Protocol Packet Design Pattern

Simplify buffer management in protocol stacks by supporting a single buffer that allows addition and extraction of different protocol layers.

Protocol Layer Design Pattern

Provide a common framework for implementing different layers of a protocol stack.

Protocol Stack Design Pattern

Manages different layers of a protocol stack. Allows dynamic addition and removal of protocol layers.

Architecture Design Patterns

Processor Architecture Patterns

Typical processor patterns found in embedded and distributed systems are covered here.

Feature Coordination Patterns

This article covers different design patterns for feature coordination.

Task Design Pattern

Typical design patterns in Embedded systems are compared here.

Resource Allocation Patterns

Resource allocation is a very important part of Embedded system design. Here we discuss important Resource allocation patterns.

Timer Management Patterns

Various Timer Management Design Patterns used in Real-time systems are covered in this article.

Implementation Patterns

C++ Header File Include Patterns

Header file management in complex Realtime projects can get very complicated. Here are some of the rules to simplify that.

STL Design Patterns

Standard Template Library used to implement manager, resource manager and queues.