On 06/22/2012 07:33 AM, Alexander Olihovik wrote: > Hi all, > I'm having some trouble using the C++ UHD API for writing Python code. > I understand that the code has been SWIG'd from C++ to Python. > > > Specifically, the C++ code I want to convert to Python is: > --------------------------------------- > uhd::stream_cmd_t > stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE); > stream_cmd.num_samps = samps_to_recv; > stream_cmd.stream_now = false; > stream_cmd.time_spec = time_to_recv; > usrp->issue_stream_cmd(stream_cmd); >
Stream command is not swigged because the control of streaming is part of gnuradio's scheduler. So start() and stop() get automatically called by the scheduler. For convenience this is a set_command_time() to control stream_cmd.time_spec. Basically, gnuradio is handling the streaming for you. Think block-based streaming model. > uhd::time_spec_t cmd_time = usrp->get_time_now() + uhd::time_spec_t(0.1); > usrp->set_command_time(cmd_time); > usrp->set_rx_freq(1.03e9, 0/*ch0*/); > usrp->set_rx_freq(1.03e9, 1/*ch1*/); > usrp->set_clear_time(); This part is swigged. -josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
