Programmable Flag Service - Analog Devices VisualDSP++ 5.0 Service Manual

7 PROGRAMMABLE FLAG
SERVICE
The programmable flag service within the system services library provides
the application with an easy-to-use interface into the programmable flag
(sometimes called general-purpose I/O, or GPIO) subsystem of the Black-
fin processor.
This chapter contains the following sections:
• "Introduction" on page 7-2
• "Operation" on page 7-3
• "Flag Service API Reference" on page 7-15
• "Public Data Types, Enumerations, and Macros" on page 7-32
VisualDSP++ 5.0 Device Drivers and System
Services Manual for Blackfin Processors
7-1