[REBOL] insert blocking only on serial port?
From: petr::krenzelok::trz::cz at: 10-Jun-2002 20:21
I am trying to write small util for our device. I am trying to figure
out what port is our device connected to in an automatic way ....
foreach [port port-number] our-ports [
print ["Opening port: " port]
either error? try [p: open/no-wait join serial://port reduce
print ["Error opening port ..." port "."]
print ["Port " port " opened successfully ..."]
print "Talking to device ..."
insert p "1"
either found? find copy p "somestring" [
print ["Device found on " port "port."]
print ["Different device on port " port]
print ["Closing port " port "."]
] ; end foreach
the problem is however with the 'insert part. While copy, first, pick
works like it should work - e.g. timeouts if no data available, or just
returns immediatelly if /no-wait is used, 'insert hangs port forever ...
I know there can be problem sending some string to unknown device being
connected to serial port, as we can't know what the device will/can do
to our request, but shouldn't it at least time-out? Or is that just
correct, assuming that device waits for more data? If so - how to do
automatic device look-up then?
Thanks a lot,