Analog Devices Blackfin Processor Interrupt-Driven Systems Application Note EE-192

About this manual

This Engineer-to-Engineer note explains the process for implementing an interrupt-driven general-purpose timer routine for the Blackfin Processor family using the C programming language. The referenced code was verified using VisualDSP++ 3.1 for Blackfin and run on the EZ-KIT Lite evaluation systems for both the ADSP-BF535 and ADSP-BF533 models.

The document details the timer programming model in a C environment, contrasting it with pure assembly approaches. It covers the use of specific header files (cdef prefix) to access memory-mapped registers via referencing-dereferencing schemes. Furthermore, it outlines the steps for configuring peripheral interrupts, including enabling them in the SIC_IMASK register and assigning priorities through System Interrupt Assignment Registers.

What's inside

• Introduction
• Timer Programming Model
• Using Features In VisualDSP++
• Blackfin Interrupts (Hardware)
• Software And Code Flow

Frequently asked questions

Which processors does this application note cover?

The document describes implementing interrupt-driven routines for the ADSP-BF535 and ADSP-BF533 Blackfin Processors.

What programming language is used for the example code?

The note explains how to implement an interrupt-driven timer routine using the C programming language.

Which VisualDSP++ version was used to verify the referenced code?

The code was verified using VisualDSP++ 3.1 for Blackfin.