Texas Instruments DM365, User Manual

Page: 17 / 131

Introduction
1-5
Figure 1-2. Framework Component Interfacing Structure.
Each component is explained in detail in the following sections.
1.2.3.1 IRES and RMAN
IRES is a generic, resource-agnostic, extendible resource query,
initialization and activation interface. The application framework defines,
implements and supports concrete resource interfaces in the form of IRES
extensions. Each algorithm implements the generic IRES interface, to
request one or more concrete IRES resources. IRES defines standard
interface functions that the framework uses to query, initialize,
activate/deactivate and reallocate concrete IRES resources. To create an
algorithm instance within an application framework, the algorithm and the
application framework agrees on the concrete IRES resource types that
are requested. The framework calls the IRES interface functions, in
addition to the IALG functions, to perform IRES resource initialization,
activation and deactivation.
The IRES interface introduces support for a new standard protocol for
cooperative preemption, in addition to the IALG-style non-cooperative
sharing of scratch resources. Co-operative preemption allows activated
algorithms to yield to higher priority tasks sharing common scratch
resources. Framework components include the following modules and
interfaces to support algorithms requesting IRES-based resources:
‰
IRES - Standard interface allowing the client application to query and
provide the algorithm with its requested IRES resources.
‰
RMAN - Generic IRES-based resource manager, which manages and
grants concrete IRES resources to algorithms and applications. RMAN
uses a new standard interface, the IRESMAN, to support run-time
registration of concrete IRES resource managers.
Client applications call the algorithm’s IRES interface functions to query its
concrete IRES resource requirements. If the requested IRES resource type
matches a concrete IRES resource interface supported by the application
FC
FCtools
ires
vicpsync
vicp
rman
hdvicpsync
EDMA3 memutils