Re: [Discuss-gnuradio] Trying to use latest version of UHD

[Josh Blum]

I fixed a typo and pushed it to the master. When you leave the dboard 
name blank, and you have a single slot, it should use the name of the 
only daughterboard slot on your usrp. Except for the typo...

So, to use the AB subdev on basic RX on usrp2, the following would work:

"0:AB"
":AB" - was previously broken by the typo
""    - empty string automatically picks the first subdevice 0:AB

-josh

On 10/26/2010 05:25 AM, Per Zetterberg wrote:
> Hi Josh and List,
>
> I am now trying to use the latest version of UHD. I am working with one or two 
> USRP2s (I have previously worked successfully with up to four USPR2s).
>
> I tried the following which I though should be the way to handle a general 
> number of USRP2s (no_ant).
>
>
>    std::string abcd_string("ABCDEFGHIJKLMNOPQRSTUVXYZ");
>    uhd::usrp::subdev_spec_t abcd(":"+abcd_string.substr(0,no_ant));
>    d_mdev->set_rx_subdev_spec(abcd, uhd::usrp::multi_usrp::ALL_MBOARDS);
>    d_mdev->set_tx_subdev_spec(abcd, uhd::usrp::multi_usrp::ALL_MBOARDS);
>
>
> However, I get the error:
>
> error: Validate rx subdev spec failed: :AB
>      assertion failed:
>     is not a valid rx dboard name.
>    possible values are: [0].
>
> Then I made a different intepretation and tried:
>
>    uhd::usrp::subdev_spec_t e("0");
>
>    for (uint32_t i1=0;i1<no_ant;i1++) {
>        d_mdev->set_rx_subdev_spec(e, i1);
>        d_mdev->set_tx_subdev_spec(e, i1);
>    }
>
> However, the results are still in error.
>
> ??
>
> BR/
> Per
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