James Gray <[EMAIL PROTECTED]> writes: > So I'm trying to see if sending a break to the serial port will reset > the line like my manual cable pulling exercise (after all, unplugging > a serial cable by definition is a "BREAK" right?). So how about it > folks? Anyone know a neat way to send a serial "BREAK" to a serial > device in bash/c/c++/perl (no python on the system I'm working with). > I've tried: > > echo "?BREAK?" > /dev/cua.Serial0 [1] > > as root, but no joy. Any pointers gladly accepted :)
chat can send breaks. Don't know how to drive chat, but at a guess chat '' BREAK </dev/ttyS0 or chat '' -BREAK- </dev/ttyS0 I think what's really happening is when you unplug the cable, you lower DTR (not sure if a break does that), so lowering DTR (and I guess RTS, if it's high) will probably do what you want. If you have trouble working out how to lower DTR, I can have a go at a little C program. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
