[Discuss-gnuradio] test_usrp_standard_tx[rx].cc doubts...

[Angilberto Muniz Sb]

Matt

While playing with "test_usrp_standard_tx[rx].cc"
setting
"-c" flag, I was expecting the folloing:
 
     x    x     x
    x    x     x
   x    x     x 
  x    x     x
 x    x     x         ......
 
But its not what I am getting. 
 
If I change the code that deal with the "counting
flag" as:
 
     if (counting_p){
       for (int i = 0; i < N; i++) {
        
        counter += delta;
        
        buf[i] = host_to_usrp_short (counter & xffff);
        
        if (i < N/2) delta = 1;
        else delta = -1;
       }
     }
 
I would expect:
 
     x       x
    x x     x x 
   x   x   x    x 
  x     x x      x
 x       x         x  ......
 
I dont get it either...
 
Am I correct in my assumptions?
 
When I watch the DAC on the scope or when I plot it
whith Matlab I see some breakups like its outputting
in bursts... Is this the correct/expected behavior?
 
Lets suppose I want to generate 10khz sin/cos wave --
can "test_usrp_standard_tx.cc" handle it whith some
modifications?

Thank you,
 
Angilberto.


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