Re: [Discuss-gnuradio] question of dual transmitter/receiver

[Fisheep]

Hi,

Sorry for my unclear suggestion before.
In the "fm_tx_2_daughterboards.py" code, just refer to the code of USRP
setting and make the same change for benchmark_tx.py. 
The code start from
 # ----------------------------------------------------------------
# Set up USRP to transmit on both daughterboards
self.u = usrp.sink_c(nchan=2)          # say we want two channels
....
self.subdev = (self.u.db(0, 0), self.u.db(1, 0))
...
self.u.set_mux(0xba98)
...
 # ----------------------------------------------------------------
And the setting of USRP1 of benchmark_tx.py
(/gnuradio-examples/python/digital/.) is in usrp_transmit_path.py.
But I remember that the new version of gnuradio hides the USRP setting in
the files of usrp_options.py (/gnuradio-core/src/python/.) and
generic_usrp.py (/gnuradio-core/src/python/blks2impl/.)
If you want to modify these two files, I think it is a little bit difficult. 
Maybe you have to construct a new USRP setting in usrp_transmit_path.py.

The setting of "set_mux" seems different for tx and rx, but I don't know the
exact reason. Sorry.

I am not sure whether this information is what you want. Hope this helps.

Fisheep


YouheiFujii wrote:
> 
> Hi,
> 
> Thank you for your advice.
> 
>  >It seems you have two daughterboards on one USRP1, and you want to 
> communicate with these two daughterboards.
> Yes, that's right.
> 
> I want to use my dual-db program in /usr/share/example/digital.
> I saw "fm_tx_2_daughterboards.py", but that program isn't use digital's 
> py-files and modules.
> 
> When I search, I saw the function "set_mux".
> I tried use "set_mux", but I didn't do that well.
> 
> If does anyone have experience of making program which on dual-db on 
> 1-USRP1,
> please give me advice.
> 
> I have to do well in few days ;-
> 
> 
> Thanks,
> youhei
> 
> (2010/07/26 21:55), Fisheep wrote:
>> Hi,
>>
>> It seems you have two daughterboards on one USRP1, and you want to
>> communicate with these two daughterboards.
>> Maybe you could take a look at fm_tx_2_daughterboards.py first(in
>> /gnuradio-examples/python/usrp/.).
>> > From your code, I think you didn't modify the USRP setting that causes
>> your
>> code fail.
>>
>> Hope that helps,
>>
>> Fisheep
>>
> 
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> 
> 

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