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Re: [Discuss-gnuradio] How to set the frequency from firmware
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] How to set the frequency from firmware |
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Date: |
Wed, 28 Jul 2010 09:06:22 -0700 |
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User-agent: |
Mutt/1.5.20 (2009-08-17) |
On Wed, Jul 28, 2010 at 11:27:12AM +0200, Matthias Schäfer wrote:
> Hi List,
> I'm working on a firmware for a completely standalone usrp2 sender.
>
> How is that 32 bits integer dsp_tx_regs->freq interpreted by the
> hardware and which value do I need to send e.g. on the 802.11g
> channel 11 (2.462 GHz)?
>
> Cheers,
> Matthias
Matthias,
dsp_tx_regs->freq holds the digital up converter frequency tuning word.
Look in db_init.c. In particular, spend some time with db_tune.
grep is your friend.
Eric