This allows client applications to locate the IP addresses and the port of
the KISS TCP service, allowing the end user to just select a Dire Wolf from
a list instead of trying to guess its dynamic IP address and typing it in
manually. This is especially convenient on mobile devices.
On Linux, the standard Avahi daemon is used via dbus and the avahi-client
library. Building with it requires installing the development header
package; README.md is updated accordingly.
On Mac, the MacOS dnssd API is used:
https://developer.apple.com/documentation/dnssd?language=objc
I don't have Windows, but more recent Windows 10 builds apparently have
a working DNS-SD mDNS implementation that can be used on 64-bit builds.
(including 1200/2200Hz) to -x command line argument in Direwolf.
This is useful for calibrating FM deviation using a meter,
devcal, or manually. See:
https://groups.io/g/direwolf/topic/setting_deviation/78633292
Options are:
-x a: alternating mark/space tones (original functionality)
-x m or -x 1: steady mark tone (e.g. 1200Hz)
-x s or -x 2: steady space tone (e.g. 2200Hz)
-x p: set PTT only - for RTL-SDR adjustments
Scope tested with mark_freq>=300Hz and space_freq<=5000Hz.
Returns an error message if mark/space frequencies are set
to 0.
