Add a GUI for showing RC and servo channels

[stephendade]

As per the below screenshot, this adds GUI windows for showing the current values of the RC inputs and Servo outputs. Useful for debugging any issues with inputs and outputs.

It can be launched via rc guiin or rc guiout to show the RC in and Servo out windows respectively. Otherwise, there is a menu for them in the console (rc menu).

Tested in SITL.

[peterbarker]

  overload 1: argument 2 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'float'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/wx/lib/agw/pygauge.py", line 380, in OnPaint
    dc.DrawText(drawString, textXPos, textYPos)
TypeError: DC.DrawText(): arguments did not match any overloaded call:
  overload 1: argument 2 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'float'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/wx/lib/agw/pygauge.py", line 380, in OnPaint
    dc.DrawText(drawString, textXPos, textYPos)
TypeError: DC.DrawText(): arguments did not match any overloaded call:
  overload 1: argument 2 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'float'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/wx/lib/agw/pygauge.py", line 380, in OnPaint
    dc.DrawText(drawString, textXPos, textYPos)
TypeError: DC.DrawText(): arguments did not match any overloaded call:
  overload 1: argument 2 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'float'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/wx/lib/agw/pygauge.py", line 380, in OnPaint
    dc.DrawText(drawString, textXPos, textYPos)
TypeError: DC.DrawText(): arguments did not match any overloaded call:
  overload 1: argument 2 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'float'

[stephendade]

@peterbarker - haven't come across that error. What version of wxpython are you running? I'm running v4.2.1

[peterbarker]

@peterbarker - haven't come across that error. What version of wxpython are you running? I'm running v4.2.1

>>> wx.__version__
'4.0.7'
>>> 

... it's OK to require a more recent version - but we should catch the problem and tell the user something useful :-) Perhaps fail to load the module in this case?

[stephendade]

Well, this was an interesting one. According to https://discuss.wxpython.org/t/float-values-no-longer-accepted-in-wxpython-4-1-2a1-dev5259/35731 and some testing if a user is running Python 3.10+, they also need to be running wxpython 4.2.1+

I've now added in a check for this.

[tridge]

@stephendade can you also add it to a Tools/ menu on the console so users can find it?
thanks!

[stephendade]

@stephendade can you also add it to a Tools/ menu on the console so users can find it?
thanks!

I've already got an "RC" menu in the terminal with menu items for both. Are you thinking a more generic "Tools" menu so we can add other useful things later?

[stephendade]

add it to a Tools/ menu on the console so users can find it?

Done

fixed