Oh, it’s genuine FTDI. That part is fine. I’ve had it dumping masses of data successfully if I manually start the transfer. Sent from my VT100
On 20 Aug 2018, at 11:37 am, Paul van den Bergen <paul.vandenbergen@gmail.com> wrote:
the ones I played with used the CH340 chipset: https://sparks.gogo.co.nz/ch340.html https://cdn.sparkfun.com/datasheets/Dev/Arduino/Other/CH340DS1.PDF
do you know what chipset it's using?
On Mon, 20 Aug 2018 at 11:32, Paul van den Bergen <paul.vandenbergen@gmail.com> wrote: Yeah, that's probably fine - but it's still something I'd look at for workarounds... that whole "connect then fail to interact" thing sounds familiar... it's waiting for something that never comes, or the return is swallowed by the USB serial chip...
On Mon, 20 Aug 2018 at 10:47, cory seligman <coryms.luv@gmail.com> wrote: 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
_______________________________________________ luv-main mailing list luv-main@luv.asn.au https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main
-- Dr Paul van den Bergen
-- Dr Paul van den Bergen
-- Dr Paul van den Bergen