NXC  Version 1.2.1 r5
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void HTRCXSetIRLinkPort ( const byte  port)

HTRCXSetIRLinkPort function.

Set the global port in advance of using the HTRCX* and HTScout* API functions for sending RCX and Scout messages over the HiTechnic iRLink device. The port must be configured as a Lowspeed port before using any of the HiTechnic RCX and Scout iRLink functions.

portThe sensor port. See Input port constants.