mirror of https://gerrit.osmocom.org/libusrp
240 lines
5.2 KiB
C++
240 lines
5.2 KiB
C++
/* -*- c++ -*- */
|
|
/*
|
|
* Copyright 2005,2008,2009 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GNU Radio
|
|
*
|
|
* GNU Radio is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3, or (at your option)
|
|
* any later version.
|
|
*
|
|
* GNU Radio is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GNU Radio; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <getopt.h>
|
|
#include <assert.h>
|
|
#include <math.h>
|
|
#include <boost/scoped_ptr.hpp>
|
|
#include <usrp/usrp_local_sighandler.h>
|
|
#include <usrp/usrp_standard.h>
|
|
#include <usrp/usrp_bytesex.h>
|
|
|
|
char *prog_name;
|
|
|
|
|
|
|
|
|
|
static void
|
|
run_cal(usrp_standard_rx_sptr u, int which_side, int decim, bool verbose_p)
|
|
{
|
|
static const int BUFSIZE = u->block_size();
|
|
static const int N = BUFSIZE/sizeof (short);
|
|
short buf[N];
|
|
bool cal_done = false;
|
|
bool overrun;
|
|
int noverruns = 0;
|
|
|
|
static const double K = 1e-4;
|
|
long integrator[2];
|
|
int offset[2];
|
|
|
|
integrator[0] = 0;
|
|
integrator[1] = 0;
|
|
offset[0] = 0;
|
|
offset[1] = 0;
|
|
|
|
u->start(); // start data xfers
|
|
|
|
while(!cal_done){
|
|
int ret = u->read (buf, sizeof (buf), &overrun);
|
|
if (ret != (int) sizeof (buf)){
|
|
fprintf (stderr, "usrp_cal_dc_offset: error, ret = %d\n", ret);
|
|
continue;
|
|
}
|
|
if (overrun){
|
|
fprintf (stderr, "O");
|
|
noverruns++;
|
|
}
|
|
else {
|
|
// fputc('.', stderr);
|
|
}
|
|
|
|
static const int MAX = (1L << 30); // 1G
|
|
|
|
for (int i = 0; i < N/2; i++){
|
|
for (int n = 0; n < 2; n++){
|
|
integrator[n] = integrator[n] + buf[2*i + n];
|
|
if (integrator[n] > MAX)
|
|
integrator[n] = MAX;
|
|
else if (integrator[n] < -MAX)
|
|
integrator[n] = -MAX;
|
|
}
|
|
}
|
|
|
|
#if 1
|
|
for (int n = 0; n < 2; n++){
|
|
offset[n] = (int) rint(integrator[n] * K);
|
|
if (offset[n] > 32767)
|
|
offset[n] = 32767;
|
|
else if (offset[n] < -32767)
|
|
offset[n] = -32767;
|
|
u->set_adc_offset(which_side * 2 + n, offset[n]);
|
|
}
|
|
#else
|
|
offset[0] = (int) rint(integrator[0] * K);
|
|
if (offset[0] > 32767)
|
|
offset[0] = 32767;
|
|
else if (offset[0] < -32767)
|
|
offset[0] = -32767;
|
|
u->set_adc_offset(which_side * 2 + 0, offset[0]);
|
|
u->set_adc_offset(which_side * 2 + 1, offset[0]);
|
|
#endif
|
|
|
|
|
|
printf ("%9ld : %6d\t\t%9ld : %6d\n",
|
|
integrator[0], offset[0], integrator[1], offset[1]);
|
|
}
|
|
|
|
u->stop();
|
|
}
|
|
|
|
|
|
static void
|
|
set_progname (char *path)
|
|
{
|
|
char *p = strrchr (path, '/');
|
|
if (p != 0)
|
|
prog_name = p+1;
|
|
else
|
|
prog_name = path;
|
|
}
|
|
|
|
static void
|
|
usage ()
|
|
{
|
|
fprintf(stderr, "usage: %s [-v] [-w which_side] [-D decim] [-c ddc_freq] [-g gain]\n", prog_name);
|
|
fprintf(stderr, " [-S fusb_block_size] [-N fusb_nblocks]\n");
|
|
exit (1);
|
|
}
|
|
|
|
static void
|
|
die (const char *msg)
|
|
{
|
|
fprintf (stderr, "die: %s: %s\n", prog_name, msg);
|
|
exit (1);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
int ch;
|
|
int decim = 128; // 500 kS/sec
|
|
bool verbose_p = false;
|
|
int which_board = 0;
|
|
int which_side = 0;
|
|
double ddc_freq = 0;
|
|
int fusb_block_size = 1024;
|
|
int fusb_nblocks = 4;
|
|
double pga_gain = 0.0;
|
|
|
|
set_progname(argv[0]);
|
|
|
|
while ((ch = getopt (argc, argv, "vw:D:c:S:N:g:")) != EOF){
|
|
switch (ch){
|
|
|
|
case 'w':
|
|
which_side = strtol (optarg, 0, 0);
|
|
if (which_side < 0 || which_side > 1)
|
|
usage();
|
|
break;
|
|
|
|
case 'D':
|
|
decim = strtol (optarg, 0, 0);
|
|
if (decim < 1)
|
|
usage();
|
|
break;
|
|
|
|
case 'c':
|
|
ddc_freq = strtod (optarg, 0);
|
|
break;
|
|
|
|
case 'v':
|
|
verbose_p = true;
|
|
break;
|
|
|
|
case 'S':
|
|
fusb_block_size = strtol(optarg, 0, 0);
|
|
break;
|
|
|
|
case 'N':
|
|
fusb_nblocks = strtol(optarg, 0, 0);
|
|
break;
|
|
|
|
case 'g':
|
|
pga_gain = strtod (optarg, 0);
|
|
break;
|
|
|
|
default:
|
|
usage ();
|
|
}
|
|
}
|
|
|
|
int nchannels = 1;
|
|
int mode = usrp_standard_rx::FPGA_MODE_NORMAL;
|
|
int mux;
|
|
|
|
if (which_side == 0)
|
|
mux = 0x00000010;
|
|
else
|
|
mux = 0x00000032;
|
|
|
|
#ifdef SIGINT
|
|
usrp_local_sighandler sigint (SIGINT, usrp_local_sighandler::throw_signal);
|
|
#endif
|
|
#ifdef SIGQUIT
|
|
usrp_local_sighandler sigquit (SIGQUIT, usrp_local_sighandler::throw_signal);
|
|
#endif
|
|
|
|
usrp_standard_rx_sptr urx =
|
|
usrp_standard_rx::make(which_board, decim,
|
|
nchannels, mux, mode,
|
|
fusb_block_size, fusb_nblocks);
|
|
if (!urx)
|
|
die("usrp_standard_rx::make");
|
|
|
|
try {
|
|
|
|
if (!urx->set_rx_freq(0, ddc_freq))
|
|
die("urx->set_rx_freq");
|
|
|
|
urx->set_pga(2 * which_side + 0, pga_gain);
|
|
urx->set_pga(2 * which_side + 1, pga_gain);
|
|
|
|
run_cal(urx, which_side, decim, verbose_p);
|
|
}
|
|
catch (usrp_signal &sig){
|
|
fprintf (stderr, "usrp_cal_dc_offset: caught %s\n", sig.name().c_str());
|
|
}
|
|
catch(...){
|
|
fprintf (stderr, "usrp_cal_dc_offset: caught something\n");
|
|
}
|
|
}
|
|
|