Re: [Discuss-gnuradio] how to trigger dynamic reconfiguration with lock/disconnect

[Josh Blum]

On 06/04/2011 05:16 AM, Marcus D. Leech wrote:
>>
>> I've found it impossible to create a half-duplex transceiver with WBX
>> and one antenna in grc. Would an open valve in the transmit chain stop
>> the transmitter and enable the receiver, or would a closed valve in
>> the receiver automatically stop the transmitter? I've experimented
>> with several combinations, and all i found was as soon as the transmit
>> chain is activated the receiver looses sensitivity. Is it possible
>> with WBX and GRC alone?
>>
>> Gr. Sim
>>
>>
> As far as I know, the ATR logic (Automatic Transmit Receiver) in the
> FPGA *always* switches the
>   RX-chain away from the TX/RX port when transmitting.   What I'm not
> sure of is whether sending
>   zeroes is enough to cause the ATR logic to go into "not transmitting",
> or whether you actually
>   have to interrupt the data flow.
> 
> Perhaps Josh can comment?
> 
> 


Yea, you cannot send samples when you dont want to transmit. There isnt
really such a concept of that in GRC itself, but you certainly can
implement the blocks and control logic and connect them in grc. Someone
should make interesting use of those tagging features as well. :-)

-Josh