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On Thu, 03 Apr 2008 20:25:20 -0400, Tom Metro <[hidden email]> wrote: > Here's an "open source" USB to RS232 adapter: > http://www.embedded-projects.net/index.php?page_id=165 > I don't know if it has a working DTR line, but it ought to have adequate > documentation of the hardware to permit answering that question, and a > support community. I took a look at the schematic ("Schaltplan" in German, I conclude) for the higher-numbered version, and it doesn't seem to have more than serial data input and output. However, PD6 and PD7 on the embedded µP seem not to be assigned, and any good hacker should be able to adapt the board to make DTR wiggle. (I can't figure out for sure whether SV2 is the RS-232 connector, but nothing else seems to be.) The organization seems to encourage writing of more driver firmware; they might reply about adding a DTR output. (If you're careful of static and such, you might well use PD6 or PD7 directly connected to whatever you wanted DTR to wiggle.) One US company that is (imho) inspiring, heavily "into" embedded microprocessors and some related hardware is Sparkfun: <http://www.sparkfun.com/commerce/categories.php> They are an extremely capable, alert, and well-informed bunch who seem to keep up with the field really well. Good luck! -- Nicholas Bodley Waltham, Mass. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Discuss mailing list [hidden email] http://lists.blu.org/mailman/listinfo/discuss
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