I am having a look at IR devices from Microchip (MCP2155 and MCP2150) and I would like to clear up 2 points : - Both units are supposed to work as "secondary devices". What device should I use as "primary device" if I want to communicate 2 Pics by means of these units ? - MCP2155 supports DCE applications while MCP2150 supports DTE ones (both as secondary devices). What difference this means for me if I want to use them to IR-link 2 Pics ? Thanks for your help ! Joan Ilari Barcelona (Spain) ================================================================ ... I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near Tannhauser Gate. All those moments will be lost in time, like tears in rain ... Time to die ... -Blade Runner - ================================================================ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads