On 07/19/2018 01:44 PM, Ayaz Mahmud wrote:
Correction:
Can I do like:
Transmit for 1sec with 1^st USRP sink from *RF A* – TX/RX port and stop?
Then Transmit for 1sec with _2^nd _USRP sink from *RF B* – TX/RX port
and stop?
Thanks
Ayaz
It's not easy to do that kind of "procedural" logic with GRC, but using
the underlying gr-uhd interface with Gnu Radio, or even just
UHD without Gnu Radio, this kind of thing can be arranged.
I suspect that it will require creating/destroying a complete multi_usrp
object on every iteration, and that setup/tear-down is very
expensive--you certainly cannot do it on a 1-second cadence.
On the other hand, you could create a dual-channel object, and "clamp"
the TX gain to 0 on that channel. That's actually possible to
do in the context of GRC using messages and some helper logic written
in Python.
*From: *Ayaz Mahmud <mailto:ayazmah...@hotmail.com>
*Sent: *Thursday, July 19, 2018 11:43 AM
*To: *Marcus D. Leech <mailto:mle...@ripnet.com>;
usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>
*Subject: *RE: [USRP-users] Configuring USRP UHD B210 for tx antenna
selection
Marcus,
Can I do like:
Transmit for 1sec with 1^st USRP sink from *RF A* – TX/RX port and stop?
Then Transmit for 1sec with 1^st USRP sink from *RF A* – TX/RX port
and stop?
Ayaz
*From: *Marcus D. Leech via USRP-users <mailto:usrp-users@lists.ettus.com>
*Sent: *Thursday, July 19, 2018 11:18 AM
*To: *usrp-users@lists.ettus.com <mailto:usrp-users@lists.ettus.com>
*Subject: *Re: [USRP-users] Configuring USRP UHD B210 for tx antenna
selection
On 07/19/2018 12:39 PM, Ayaz Mahmud via USRP-users wrote:
Hi,
USRP – B210
I am trying to use 2 USRP sink in same flow graph. Where I want :
1^st USRP sink to transmit from *RF A* – TX/RX port
2^nd USRP sink to transmit from *RF B* – TX/RX port
How can I do such configuration?
Thanks
Ayaz
You cannot have two independent sinks talking to the same physical device.
Instead, you have two *channels*, one with a subdev of "A:A", the
other with a subdev of "A:B".
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