[YARDStick] Yardstick & rfcat - no receive functions work on Windows

[Dave Wakelee]

Hello Cinaed,

Yes, all the TX or RX commands require some setup (frequency, mode, etc).
Yes, I can transmit fine - successfully using the device to send 304MHz
packets to my ceiling fans.  The next step was to receive some packets from
my 433MHz temperature sensors, and that's when I encountered the exception
errors on Windows.

All the automated receive functions of rfcat were failing.  The root cause
was traced to Python (on Windows) not supporting the select() function for
keyboard input (used by rfcat to end receiving).  If you take a look in the
replies to this issue on the rfcat bitbucket site where the code resides,
atlas provided some test code which corrects the receive issue on Windows.

Best regards,
Dave

-----Original Message-----
From: YARDStick [mailto:yardstick-bounces at greatscottgadgets.com] On Behalf
Of Cinaed Simson
Sent: Wednesday, November 23, 2016 7:24 PM
To: yardstick at greatscottgadgets.com
Subject: Re: [YARDStick] Yardstick & rfcat - no receive functions work on
Windows

On 11/23/2016 06:33 AM, Dave Wakelee wrote:
> With rfcat, the Yardstick One, and Windows, none of the receive 
> functions appear to work.  RFlisten(), discover(), etc - all fail.
Transmit works ok.
> The error returned is...

I may be wrong but I don't think any of those commands without setting up
the device.

How do you know the device is transmitting?
> 
>   File "C:\SDR\rfcat\rflib\chipcon_usb.py", line 120, in keystop
>     return len(select.select([sys.stdin],[],[],delay)[0])
> error: (10093, 'Either the application has not called WSAStartup, or 
> WSAStartup failed')
> 
> OK, no problem, searching the net reveals that the select function is 
> provided by the socket library on Windows.  So, adding 'import socket'
> corrects that error.  Then, a new error...
> 
>   File "C:\SDR\rfcat\rflib\chipcon_usb.py", line 120, in keystop
>     return len(select.select([sys.stdin],[],[],delay)[0])
> error: (10038, 'An operation was attempted on something that is not a
> socket')
> 
> Again, searching the net says that select can only be used for 
> sockets, not sys.stdin.
> 
> Any solution to getting the rfcat receive functions to work properly 
> in Windows?

Since you seem to be certain there are no driver issues then check out the
code at

  https://github.com/AndrewMohawk/RfCatHelpers






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