[Discuss-gnuradio] problem with send() function making OOT

[Sanjoy Basak]

Hi all,

I am trying to make 2 TX 1Rx tagged stream block(OOT). For 1Tx 1Rx, it was working fine. I am trying to extend it. Now the problem is, I am not being able to configure the send() function.

If I try make test, it does not show any problem. However, when I check after reception I find that 1 transmitter is transmitting, and another is not. I checked the every port of my USRP X310, it is working fine.

Here's the code. I putting a short part where I have problem. Please let me if you need the header and grc file as well, to correct the code.

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void

usrp_echotimer_cc_impl::send()

{

// Data to USRP

num_tx_samps = d_tx_stream->send(d_in_send1, total_num_samps, d_metadata_tx, total_num_samps/(float)d_samp_rate+d_timeout_tx);

num_tx_samps = d_tx_stream->send(d_in_send0, total_num_samps, d_metadata_tx, total_num_samps/(float)d_samp_rate+d_timeout_tx);

}

int

usrp_echotimer_cc_impl::work (int noutput_items,

gr_vector_int &ninput_items,

gr_vector_const_void_star &input_items,

gr_vector_void_star &output_items)

{

gr_complex *in0 = (gr_complex *) input_items[0];

gr_complex *in1 = (gr_complex *) input_items[1];

gr_complex *out = (gr_complex *) output_items[0];

// Set output items on packet length

noutput_items = ninput_items[0]=ninput_items[1];

// Resize output buffer

if(d_out_buffer.size()!=noutput_items) d_out_buffer.resize(noutput_items);

// Send thread

d_in_send0 = in0;

d_in_send1 = in1;

d_noutput_items_send = noutput_items;

d_thread_send = gr::thread::thread(boost::bind(&usrp_echotimer_cc_impl::send, this));

// Receive thread

d_out_recv = &d_out_buffer[0];

d_noutput_items_recv = noutput_items;

d_thread_recv = gr::thread::thread(boost::bind(&usrp_echotimer_cc_impl::receive, this));

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My system config is X310, daughterboard SBX-120 and I am using UHD-3.9

I checked the subdev specification, gain and frequency assignment. Those are fine.

Please let me know how to correct and thanks in advance.

best regards

Sanjoy