Original message: >> Looking at documentation from >> http://www.ftdichip.com/ >> it looks as easy as 'falling off a log'. >> >> There are ready built modules such as these available from several >> suppliers. >> http://www.dontronics.com/dlp.html >> >> Can any one out there confirm? >> i.e. - Their virtual com port driver is useable from VISA, opens, reads >> and writes as advertised?
I used the virtual com port drivers with VISA and they work rather well. I only had some problems when reading data longer than appr. 4000 bytes. I used the workaround to read in chunks of <4000 bytes, until I recently tried the D2XX drivers (.dll files) from FTDI. I wrote LV wrapper VIs (for the most important routines only) and was surprised how simple this was. The D2XX don't need VISA and the 4000 bytes problem was gone, too. -Franz
