[Discuss-gnuradio] How to use tune function?

[Ujala Qasim]

The code I am basically using for capturing samples is this:

http://gnuradio.org/trac/wiki/UsrpFAQ/CppInterface

As my code is completely based on C++, I can't use usrp.tune(self.u, 0, self.subdev,106.2e6), instead can I use the following method from usrp_standard:

bool usrp_standard_rx::tune(int chan, db_base_sptr db, double target_freq, usrp_tune_result *result)

in this manner:

// Set DDC center frequency

   urx->set_rx_freq (0, center_freq);

//What should be my center_freq here?

//Set Tuning Frequency

urx->tune(0, db, 106.2e6, result) 

// How should I pass the value of db and result?

 

 // Set Number of channels

   urx->set_nchannels(1);

 

 // Set ADC PGA gain

   urx->set_pga(0,gain);

 

 // Set FPGA Mux

   urx->set_mux(0x32103210); // Board A only

 

 // Set DDC decimation rate

   urx->set_decim_rate(decim);

  

 // Set DDC phase 

   urx->set_ddc_phase(0,0);