Re: [Discuss-gnuradio] two byte bool, and 30 channels?

[Mattias Kjellsson]

Johnathan Corgan wrote:
> On Thu, Aug 14, 2008 at 7:52 AM, Mattias Kjellsson <address@hidden> wrote:
>
>   
> > 1. In op_config_rx_reply_v2_t structure (and op_config_tx_reply_v2_t),
> > defined in usrp2_eth_packet.h, the member "ok" is a uint16_t... Why is that?
> > Does it have something to do with _AL4 maybe, or does it have something to
> > do with future features?
> >     
>
> _AL4
>   
Nice to know, I almost went insane over a couple of htons() earlier 
today. ;)
>   
> > 2. The maximum number of channels is defined as 30 in usrp2.h... What does
> > channel refer to in this case?
> >     
>
> The USRP2 GbE transport can support 32 (0-31) independent streams of
> data.  Channel 31 is reserved for the control channel, making 30 the
> largest valid data channel number.
>
> These independent channels will be used to send streams from multiple
> USRP2s ganged together over their high-speed interconnect bus and
> connected to the host via a single GbE.
>   
As well good to know, I had some rather strange ideas what the 
"op_mimo_config_t"- structure  could be used for, together with 
different channels, but this makes things make a bit more sense.

> --
> Johnathan Corgan
> Corgan Enterprises LLC
> http://corganenterprises.com/
>   
On a related matter, might you (or anybody else) know, how close to 
"release" the usrp2- libraries code is? If I re- phrase the question, 
will the things in the usrp2- trunk change fundamentally; change but not 
to much; or will things just be added? For instance adding the channels 
and so on. .

BR
Mattias