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Support for Windows PuTTY connecting straight to a local serial port

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in place of making a network connection. This has involved a couple
of minor infrastructure changes:
 - New dlg_label_change() function in the dialog.h interface, which
   alters the label on a control. Only used, at present, to switch
   the Host Name and Port boxes into Serial Line and Speed, which
   means that any platform not implementing serial connections (i.e.
   currently all but Windows) does not need to actually do anything
   in this function. Yet.
 - New small piece of infrastructure: cfg_launchable() determines
   whether a Config structure describes a session ready to be
   launched. This was previously determined by seeing if it had a
   non-empty host name, but it has to check the serial line as well
   so there's a centralised function for it. I haven't gone through
   all front ends and arranged for this function to be used
   everywhere it needs to be; so far I've only checked Windows.
 - Similarly, cfg_dest() returns the destination of a connection
   (host name or serial line) in a text format suitable for putting
   into messages such as `Unable to connect to %s'.

[originally from svn r6815]
This commit is contained in:
Simon Tatham
2006-08-28 10:35:12 +00:00
parent 38f003dbe9
commit 34f747421d
23 changed files with 1056 additions and 43 deletions
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31
doc/using.but
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@ -491,6 +491,37 @@ protocol}\q{Raw}, from the \q{Protocol} buttons in the \q{Session}
configuration panel. (See \k{config-hostname}.) You can then enter a
host name and a port number, and make the connection.
\H{using-serial} Connecting to a local serial line
PuTTY can connect directly to a local serial line as an alternative
to making a network connection. In this mode, text typed into the
PuTTY window will be sent straight out of your computer's serial
port, and data received through that port will be displayed in the
PuTTY window. You might use this mode, for example, if your serial
port is connected to another computer which has a serial connection.
To make a connection of this type, simply select \q{Serial} from the
\q{Connection type} radio buttons on the \q{Session} configuration
panel (see \k{config-hostname}). The \q{Host Name} and \q{Port}
boxes will transform into \q{Serial line} and \q{Speed}, allowing
you to specify which serial line to use (if your computer has more
than one) and what speed (baud rate) to use when transferring data.
For further configuration options (data bits, stop bits, parity,
flow control), you can use the \q{Serial} configuration panel (see
\k{config-serial}).
After you start up PuTTY in serial mode, you might find that you
have to make the first move, by sending some data out of the serial
line in order to notify the device at the other end that someone is
there for it to talk to. This probably depends on the device. If you
start up a PuTTY serial session and nothing appears in the window,
try pressing Return a few times and see if that helps.
A serial line provides no well defined means for one end of the
connection to notify the other that the connection is finished.
Therefore, PuTTY in serial mode will remain connected until you
close the window using the close button.
\H{using-cmdline} The PuTTY command line
PuTTY can be made to do various things without user intervention by