©2013 Michael Bach, michael.bach@uni-freiburg.de, michaelbach.de
A way to access RS232 serial devices via USB, using the Keyspan devices.
// Created by bach on 11.12.06.
// Copyright 2006 Prof. Michael Bach. All rights reserved.
// History
// =======
// // 2012-11-15 checked on speed. It is possible to toggle DTR every 4 ms (10% faster already becomes a problem) // 2012-08-03 minor code change to avoid warning about unitialised self // 2011-07-04 changed names to indicated special treatment of Keyspan's USAs // 2011-07-29 automatically reads pertinent device names and accesses up to 4 Keyspan USA ports (only 1 device allowed) // 2011-04-21 added flushOutput & flushInAndOutput; not really tested yet // 2009-11-25 added "getter" for RTS & DTL // 2009-11-24 cosmetic changes, also changed number type of _modemBits to "unsigned int" // 2009-03-06 changed number type of baudrate to "unsigned long" // 2008-03-24 added port name to the error message, changed printf to NSLog // 2008-02-25 added parityNone // 2007-01-10 added "flushInput", "bytesAvailable", "readData" // 2006-12-11 begun
Rhere are many tricks which would need more description… One thing: the port name can either be generic "serial" or specific, e.g. "USA49Wb1P1.1" but then the USB port is addressed too