Yes, I am using a USB serial dongle. It's a known reasonably good quality brand that otherwise works fine interactively. On Mon, Aug 20, 2018 at 10:33 AM, Paul van den Bergen < paul.vandenbergen@gmail.com> wrote:
are you using a USB to Serial dongle? for some time now they've been a standardised SoC that apparently handles breaks poorly... so if the system is expecting a break...
(found this out for Unify PABX and Cisco serial - in the latter case, dropping the speed to 2400 and holding down space bar for 15 seconds was enough to fake a break - go figure... weird )
On Mon, 20 Aug 2018 at 10:29, cory seligman via luv-main < luv-main@luv.asn.au> wrote:
Hi All,
I'm having some trouble making expect work.
I need it to talk to some vintage equipment over usb serial, and I think I'm getting hung up on opening the port.
When the script runs, it just connects to the device and sits there. I can drive it interactively, but it doesn't attempt to automate anything.
Any ideas? Thanks.
My expect script looks like this:
#!/usr/bin/expect -f
# device set modem /dev/ttyUSB0
# keep it open exec sh -c "sleep 3 < $modem" &
# serial port parameters exec stty -F $modem 2400 raw -clocal -echo -istrip -hup
# connect send_user "connecting to $modem, exit with ~,\n" spawn -open [open $modem w+] interact { ~, exit ~~ {send "\034"} }
set force_conservative 1 ;# set to 1 to force conservative mode even if ;# script wasn't run conservatively originally if {$force_conservative} { set send_slow {1 .1} proc send {ignore arg} { sleep .1 exp_send -s -- $arg } }
set timeout -1 match_max 100000 send -- "\r" send -- "\r" expect ">" send -- "p 7d91\r" expect ">" send -- "p b2ff\r" expect ">" send -- "h\r" expect ">" send -- "td\r" expect "td\r 18 215 12 24 33\r
" send -- "gd 215\r" expect eof
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