AN941 ® Programming Windows XP for Embedded IR Applications FIGURE 1 shows an IrDA standard system, where aF Author: Joseph Snyder, Microchip Technology Inc. Windows XP based PC is communicating with an Frank Ableson, Unwired Tools, LLC embedded system. In this system, the PC operates as the Primary device (Client) and the embedded system operates as the Secondary device (Server). The terms INTRODUCTION Client and Server are used in reference to Windows (PC) programming, while Primary device and This application note details the tools, supporting Secondary device are terms used by the IrDA technologies and procedures for the development of standard. ® based PC.infrared applications on Windows XP A Windows XP (WinXP) application that interfaces with an embedded system via IrCOMM is included in the appendices of this application note. This source code ® Applicationdemonstrates the use of the Windows ® Programming Interface (API) required for IrDA standard IR communication on Windows XP based platforms. Appendix A: “Example Irda® Standard System Description” describes the system and documents the tool used to create this Windows XP application program, while Appendix B: “Win XP Source Code - IrDA DEMO.CPP” through Appendix C: “WinXP Source Code - IrDA DemoDlg.cpp” is the WinXP Application Program source code. FIGURE 1: WINDOWS XP - EMBEDDED SYSTEM BLOCK DIAGRAM ® Embedded System with IrDA Standard Port (Secondary Device/Server) Host Controller MCP215X Optical and Embedded or Transceiver Circuitry MCP2140 Circuitry ® Windows XP PC ®