Flex API utility

I thought I would share a little utility that I use when I am trying to understand an aspect of the Flex API. Top comments in the program:

/*

FlexDiscovery

Len Koppl, KDØRC

9/23/20

Visual Studio 2019 C++ console

Uses Flex API without .net or FlexLib (i.e. uses native text-based API commands)

Utility to test Flex API commands and to show TCP/IP traffic from the radio.

Displays the first Flex discovery UDP packet that it finds.  Other Flex UDP traffic 
is not read.

The commented out commands are what I have been experimenting with.  There are many 
many more that can be added here.  Most are commented out so that you can focus on 
just what you are interested in.

The main goal is to provide a way to try out commands before putting them into your

program.  To get the proper parameter name (may vary slightly from the wiki...),

uncomment the appropriate subscription(s), run this program, then activate the control

in SmartSDR, or on your Maestro.  The response from the radio will be displayed on

the console screen.  The parameters have good instruction set reciprocity,

so this will lead you to the correct syntax.

A good example is VOX.  The wiki says:

C41|transmit set vox=1

It doesn't work...

Run this utility with "sub tx all" uncommented and turn VOX on and off.  The radio

responds with:

S1F5C6BC|transmit vox_enable=1 vox_level=68 vox_delay=16

S1F5C6BC|transmit vox_enable=0 vox_level=68 vox_delay=16

So now you can deduce that the actual command is:

C41|transmit set vox_enable=1

Note that "s" and "set" are interchangable.  In my commands, I always use CD instead of C

so that I get the verbose debug version of the radio responses.

*/

Extract this source file and copy it into Visual Studio (C++ console app).

Now you have an easy way to explore the Flex API.