Hi,
I am now getting the following plot, when I set my target_freq to 89MHz
(another radio station), with center_freq in set_rx_freq() function to
-5.75:
http://i695.photobucket.com/albums/vv318/ujalaqasim/bell.jpg
The decimation rate is 250 and the sampling frequency is at 256ksps.
I am getting a
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
Hi,
Thanks for your reply Sebastiaan,
I am taking some data samples with a piece of code in Windows that takes the
raw data samples. Now, I want to analyze the samples, whether my data is
correct or not. For this, I tune to the FM frequency of 106.2 MHz (a radio
station) and pick some data samples
hi,I have some raw data samples of FM from USRP. I now want to take their
FFT and analyze the spectrum to see whether the data that I have captured is
valid or not. My question is that when plotting FFT in MATLAB should I take
the range of frequencies from 0 - 10 MHz (as the signal has been shifted
Hi,I am not using GNU Radio, I am simply taking 16-bit data samples from the
USRP in a small C++ interfacing program for Windows using
"usrp_standard.h".
Now, I want to write my own FM demodulation code for these samples as I am
not using GNU Radio, I won't be using any signal processing blocks,
th
I am receiving 16-bit data from USRP (data is in the range of -32768 to
32767) in Windows. Now I want to apply some demodulation algorithms to these
samples but I am a bit confused.
According to the following thread, each data sample that is coming from USRP
is a complex baseband value. However, a
:
> On Tue, May 26, 2009 at 1:24 AM, Ujala Qasim
> wrote:
> > I set my decimation rate to 200 and center_freq to 100.1, but the values
> of
> > my samples is exceeding this range.
>
> > Please specify the mistake that I'd be making...
>
> This is very
And I am basically trying to perform this task through Windows, but even
when i run the same code on Linux, it is giving me the same values.
On Tue, May 26, 2009 at 8:04 PM, Jason Uher wrote:
> On Tue, May 26, 2009 at 1:24 AM, Ujala Qasim
> wrote:
> > I set my decimation rat
On Tue, May 26, 2009 at 8:08 PM, Ujala Qasim wrote:
> I captured the samples using the following C++ interface which is already
> available for USRP:
> // Simple C++ USRP interfacing demonstration program
> //
> //
> // This program was derived and modified from test_u
2264
70
2336
746
4
-664097490
3084
70
3156
772
5
100
1
266
356
2
44
622
-1414417620
29987719
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
6881357
7471203
7536751
6684783
3014772
6881367
6553710
On Tue, May 26, 2009 at 1:00 AM, Eric Blossom wrote:
> On Tue, May 26, 2009 at 12:17:39AM +0600, Ujala Qasim wrot
I am trying to capture data samples from USRP for an FM receiver. In what
range should the values of the samples must be lying?
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The following article states that ideally the sample values should be
symmetric about 0, when tuned to 100.1 MHz. And the values shown are between
-70 and 170:http://www.linuxjournal.com/article/7505
However my values are very big. What could be the problem?
Also when I set my center_freq to 10010
I made the change and I am still getting the same values.
On Mon, May 25, 2009 at 12:41 PM, Eric Blossom wrote:
> On Mon, May 25, 2009 at 12:10:59PM +0600, Ujala Qasim wrote:
> > Hi,I am trying to capture the data samples from the USB port of USRP
> using
> >
Hi,I am trying to capture the data samples from the USB port of USRP using
the following code:
#include "usrp_standard.h"
// Dumy Function to process USRP data
void process_data(int *buffer)
{
}
#define SAMPELS_PER_READ (512) // Must be a multiple of 128
int main (int argc, char **argv)
{
bool lo
Hi,
While trying to implement USB interface for windows I am facing a problem.
When I try to compile my code it asks for usrp_dbid.h, and usrp_dbid.cc,
however these are generated from usrp_dbid.dat. According to my
understanding usrp_dbid.dat is loaded from daughterboards. Am I right? How
is this
Hi,As suggested by you, I am now using the usrp_standard.h to implement USB
2.0 interface for Windows. However, I am facing a problem.
The function usrp_loads_standard_bits() in usrp_prims library loads the FX2
firmware by calling the following two functions:
get_proto_filename
find_file
In short
Hi,As suggested by you, I am now using the usrp_standard.h to implement USB
2.0 interface for Windows. However, I am facing a problem.
The function usrp_loads_standard_bits() in usrp_prims library loads the FX2
firmware by calling the following two functions:
get_proto_filename
find_file
In short
Eric, I tried implementing the given task of developing a USB interface for
Windows by using the following main program that is written for Linux and
successfully executes on it. However, when I tried to use the same code with
Windows I faced a problem. The code includes usrp_standard.h, which incl
t 05:27:06PM +0600, Ujala Qasim wrote:
> > I connected the USRP to the USB 2.0 port and obtained the information of
> the
> > device using the lsusb -v command in Ubuntu. The output is attached
> below.
> > Even in Ubuntu, the interfaces and endpoints come out t
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize064
bNumConfigurations 1
Device Status: 0x
(Bus Powered)
Thanks.
On Fri, Apr 24, 2009 at 11:22 AM, Ujala
Yes, I am sure. Because I am running USRP on Ubuntu with GNU Radio on the
same computer and usb port and it is running absolutely fine.
I read another thread on a forum, which gives same interfaces and endpoint
numbers on Windows:
http://www.nabble.com/usrp-and-u...@-fedora-9-td22833152.html
I get
Hi,
I am writing a Windows interface for USRP using libusb-win32. However, I am
facing a problem. When I run the testlibusb wizard (a utility tool for
displaying information about USB devices) in Windows, it tells me that the
USRP has only one interface: Interface 0. This interface has three
altern
Hi,
I am writing an interface between Windows and USRP. I have a simple question
to ask, does the USRP need any manual board configurations before I start
communicating with the FPGA through USB?
Thanks.
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Hi!
I am writing an interface between C and Windows for USRP. For this i need
two separate usb_dev_handle objects one for command interface (udh) and one
for rx interface (bulk_udh) however, whenever I try to claim the rx
interface by calling the usb_claim_interface function it results in an
error,
function
Can you please tell me if these sequence of steps is correct? And if I am
going in the right direction?
Thanks.
On Thu, Mar 12, 2009 at 9:54 PM, Eric Blossom wrote:
> On Thu, Mar 12, 2009 at 09:03:23PM +0500, Ujala Qasim wrote:
> > Hi!
> > I am trying to write a progra
Hi!
I am trying to write a program in C that interfaces between USRP and
Windows, this is my initial code:
#include "usb.h"
#include "usrp_spi_defs.h"
#include "usrp_commands.h"
#include "fpga_regs_standard.h"
#include "ad9862.h"
#include "usrp_interfaces.h"
#include
#include
#define SAMPELS_PE
Hi,
Can someone tell me that the function bool fusb_generic_read (void *buffer,
int nbytes) belongs to which class? As it is not a part of the fusb_generic
or fusb
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I actually want to interface the USRP and a DSP board together. For this I
need to write the USB 2.0 interface between them. I am initially trying to
write a C++ code that will capture the data samples from USRP's USB 2.0 in
Windows. Later, I will try to use the same code on DSP board. What
informa
Other then that, there are a lot of other header files and cc files that are
included and I have downloaded them manually and compiling them with
usrp_standard.h too, however, I can't find the header files of type
sys/cdefs.h or sys/time.h
On Mon, Feb 2, 2009 at 7:09 PM, Ujala Qasim wrote:
I have downloaded usrp_standard.cc and usrp_standard.h manually. I am now
trying to compile them in Microsoft Visual C++, but it is giving me a couple
of errors?
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"Just use the interface exported by user_standard.h"
Do you mean I should use the usrp_standard.cc?
On Mon, Feb 2, 2009 at 6:21 PM, Eric Blossom wrote:
> On Mon, Feb 02, 2009 at 05:22:23PM +0500, Ujala Qasim wrote:
> > Hi,
> >
> > I am trying to capture USB 2.0 p
Hi,
I am trying to capture USB 2.0 packets sent over by the USRP in a C++
program. I was able to found a code that does the similar job in Linux:
#include "usrp_standard.h"
// Dumy Function to process USRP data
void process_data(int *buffer)
{
}
#define SAMPELS_PER_READ (512) // Must be a multipl
Thanks! :)
On Thu, Jan 15, 2009 at 12:49 AM, Eric Blossom wrote:
> On Thu, Jan 15, 2009 at 12:38:54AM +0500, Ujala Qasim wrote:
> > Hi,
> > Is it possible to capture the data samples of USRP sent over the USB 2.0
> > port in Windows? I am trying to write a small demo progr
Hi,
Is it possible to capture the data samples of USRP sent over the USB 2.0
port in Windows? I am trying to write a small demo program for Windows in C
that will be capturing these data samples, and later I will perform some
operations on these. I need some help with the code? If this is possible,
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