Using External References in eXpressDSP-Compliant Algorithms (Rev. A)

The TMS320 DSP Algorithm Standard (referred to as XDAIS) allows algorithms to make external references to functions implemented either in standard libraries or in other eXpressDSP-compliant libraries. However, in some cases, algorithms may be required to access specific functionalities that can be accomplished only in frameworks or in other externally linked modules.

This document discusses how eXpressDSP-complaint algorithms can access functions implemented in externally linked modules using registered function pointers. This mechanism of function calls is known as callbacks. This document also contains code snippets to show how algorithms and frameworks can use callback functions that are registered, by using the instance creation parameter.