On 10/17/2018 10:53 AM, J Subash via USRP-users wrote:
Hi,
Hope you're doing well. I am new here and new to the USRP API.
Attached is a setup to record signals at 380MHz and 2.4Ghz on two
B200's. The aim is to sync the devices using the 10Mhz and 1PPS
provided from an external source to both devices.
Using the python API to achieve this and here is a snippet used to
test multiple-usrp
In [1]: import uhd
In [2]: my_usrp = uhd.usrp.MultiUSRP("serial0=xxx310C,serial1=xxx311F")
In [3]: my_usrp.get_master_clock_rate(0)
Out[3]: 16000000.0
In [4]: my_usrp.get_master_clock_rate(1)
Traceback (most recent call last): File
"<ipython-input-4-aa48c097ad54>", line 1, in <module>
my_usrp.get_master_clock_rate(1)
RuntimeError: LookupError: IndexError: multi_usrp::mb_root(1) -
LookupError: IndexError: multi_usrp::mb_root(1) - path not found
Clearly the second device is not registered by the MultiUSRP method. I
found the C++ equivalent to this for the x series devices on the usrp
manual; which is:
uhd::device_addr_t
<https://files.ettus.com/manual/classuhd_1_1device__addr__t.html> args
<https://files.ettus.com/manual/namespaceprocess-lvbitx.html#a6105700373e342448ca66cbbdb9cf569>("addr0=192.168.10.2,addr1=192.168.20.2");
uhd::usrp::multi_usrp::sptr
<https://files.ettus.com/manual/classuhd_1_1usrp_1_1multi__usrp.html#a9d9112f5eac0b53a721f2a6c97021fc1>
usrp = uhd::usrp::multi_usrp::make
<https://files.ettus.com/manual/classuhd_1_1usrp_1_1multi__usrp.html#af0d3809a8f8dcd3c962ad5b9a0a6456c>(args
<https://files.ettus.com/manual/namespaceprocess-lvbitx.html#a6105700373e342448ca66cbbdb9cf569>);
Have these methods been exposed to the python API? If yes, a quick
example would be helpful.
Thanks very much.
Unless something has changed, you can't have more than 1 B2xx in a
single multi-usrp object.
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