[time-nuts] RS 232

Hal Murray hmurray at megapathdsl.net
Sat Jul 27 01:07:19 UTC 2013


marks at non-stop.com.au said:
> It you can figure out how to raise DTR while your application has the port
> open it can be a good source of power for a RS232 device. 

Most OSes turn it on automagically when you open the file.  (and turn it off 
when you close the file)



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