On 06/27/2016 06:47 PM, Robert Kraml wrote:
I have a simple c++ test program on a Ettus x310 that used to work now
doesn't. I'm trying to simply set two center freq of two channels of a
single USRP. The above Out of range error occurs when I try to set
anything on the 2nd channel.
I get a crash with a Channel out of range error:
| $./t2j.out
linux; GNU C++ version4.8.4; Boost_105400; UHD_003.009.001-0-gf7a15853
-- X300 initialization sequence...
-- Determining maximum frame size... 1472 bytes.
-- Setup basic communication...
-- Loading values from EEPROM...
-- Setup RF frontend clocking...
-- Radio 1x clock:200
-- Initialize Radio0 control...
-- Performing register loopback test... pass
-- Initialize Radio1 control...
-- Performing register loopback test... pass
terminate called after throwing an instance of'uhd::index_error'
what(): LookupError: IndexError: multi_usrp: RX
channel140445275195320 out of rangefor configured RX frontends
Aborted (core dumped)|
Here is my test program:
|int main( void )
{
// sources
gr::uhd::usrp_source::sptr usrp1;
const std::string usrp_addr= std::string( "addr=192.168.10.30" );
uhd::stream_args_t usrp_args= uhd::stream_args_t( "fc32" );
usrp_args.channels= std::vector<size_t> ( 0, 1 );
usrp1= gr::uhd::usrp_source::make( usrp_addr, usrp_args);
usrp1->set_subdev_spec( std::string( "A:AB B:AB" ), 0 );
usrp1->set_clock_source( "external" );
usrp1->set_samp_rate( 5.0e6 );
usrp1->set_center_freq( 70e6, 0 ); // this is OK
usrp1->set_center_freq( 70e6, 1 ); // crashes here With RX Chan out of
Range Error!
printf( "test Done!\n" );
return 0;
||}
|
Am I missing some crucial step that might have been optional at some
point but is not now?
The only thing I’ve found so far in searching is make sure PYTHONPATH
is set correctly (and for the heck of it I made sure it pointed to the
site_packages) but again that seems to be related to GRC and not C++.
I am using Ubuntu 14.04.4 and UHD 3.9.1 with gnuradio 3.7.8.1 (Ive
also tried 3.7.9.2) with the same result.
The hardware is an Ettus x310 with two BasicRx daughterboards.
The form of the "make" you're using is deprecated, but it requires that
you pass in the number of channels, otherwise it defaults to '1'.
http://gnuradio.org/doc/doxygen/group__uhd__blk.html#gaed1cf28990e424599f16f2c8a84ca57b
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