Книга: Real-Time Concepts for Embedded Systems

10.3 Applications of Exceptions and Interrupts

 From an application's perspective, exceptions and external interrupts provide a facility for embedded hardware (either internal or external to the processor) to gain the attention of application code. Interrupts are a means of communicating between the hardware and an application currently running on an embedded processor.

In general, exceptions and interrupts help the embedded engineer in three areas:

· internal errors and special conditions management,

· hardware concurrency, and

· service requests management.

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