Re: [Discuss-gnuradio] UHD replacement for write_fpga_reg

[Josh Blum]

> 
> With the UHD version, I can't get the transmitter to turn on,
> regardless of input. If I connect the usrp_sink to a vector source
> of 1s, the transmitter turns on, but not for very long. Is there
> some way to force the transmitter to be on? I am using the RFX
> series daughtercards. The transmitter should be the only thing
> attempting to use this particular daughtercard. I'd appreciate any
> suggestions you may have, but I'll keep poking at it.
> 

The TX GPIO setting kicks in when packets sent into the USB. You can
override the GPIO setting though with the dboard iface (all swigged up
into python as well)
http://files.ettus.com/uhd_docs/doxygen/html/classuhd_1_1usrp_1_1dboard__iface.html

-josh

> My project itself is an FMCW chirp radar front-end for the USRP. If
> I can get it brought up-to-date, and secure the permission of my
> sponsor, I will release it as open source to the gnuradio
> community.
> 

cool!