[Xastir] Re: HSP Cable Problem and now Segfault

[Stephen West-Fisher]

Curt Mills, WE7U wrote:

> 
> 
> Easiest way I know of would be to measure with a DMM and bring up
> Minicom/Seyon or some other terminal program, watching the handshake
> lines as it activates the port.

Correction: DTR is pin 20 and it looks like it is always -9 with respect 
to pin 7.

Since I know a lot more about software than hardware, I commented out 
the debugging if statments in port_dtr so that I could see just the UP 
Down and DTR. When I disconnect the cable to check levels, DTR is always 
1 and status is Down. When I connect the cable back up, it will cycle 
between DTR 1 and 0 and UP and Down. Not back and forth, more like two 
and two. I expected it to cycle back and forth and for me to see a 
change in DTR when it did. However, I don't work in C so am probably 
misunderstanding something here.

Any of this shed any light?

-- 
Stephen West-Fisher
Coastal Data Systems
727.418.9774
http://www.coastaldatasystems.com/