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Re: [Discuss-gnuradio] hafl duplex for N210 + XCVR2450

From: Josh Blum
Subject: Re: [Discuss-gnuradio] hafl duplex for N210 + XCVR2450
Date: Tue, 04 Sep 2012 10:24:04 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0

On 09/04/2012 07:33 AM, Anjan Rayamajhi wrote:
> Hi,
> I had question about using N210 and XCVR2450 in a half-duplex scenario. I
> have used tx_sob and tx_eob stream tags hoping for a switch from default RX
> to TX whenever there is a packet to transmit. What happens is both sides
> initiate with LED C constantly ON ( default to receiving, I guess ) but as
> the packet comes with the two stream tags attached, I do see the
> transmitting led A ON but the receiving LED C is also ON at the same time.
> Should not there be a switch from RX to TX and LED C be OFF. I am not being
> able to receive anything is this scenario though transmitting side does
> transmit but there is no activity in the receiving end.
> I will be thankful for any comments.

When transmitting, the mixer should go into TX mode regardless of RXing
or not. In other words, the TX state overrides the RX state. So it
should be ok to continuously receive samples, that wont disrupt transmit.


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