Re: Writing Drivers for Custom Hardware (GNSS Firehose)

2024-07-13 Thread Larry Doolittle
Friends - On Fri, Jul 12, 2024 at 10:09:18PM -0400, Marcus D. Leech wrote: > On 12/07/2024 16:42, Walter Szeliga wrote: > > I have a GNSS Firehose > > https://transitiva.com/product/gnss-firehose-receiver-tri-band-quad-constellation/ > Are these things actually in production?  What kind of price

Re: sndfile::sndfile again

2022-12-29 Thread Larry Doolittle
Cinaed - On Wed, Dec 28, 2022 at 06:31:17PM -0800, Cinaed Simson wrote: > Hi Larry - try >   apt install libsndfile1-dev Yes, I confirm that is the solution. Thanks! Although it's more practical to apt-get install --no-install-recommends libsndfile1-dev to keep xtrx-dkms out of it. Both

sndfile::sndfile again

2022-12-28 Thread Larry Doolittle
gnuradio gurus - I just hit a problem with symptoms that precisely match https://lists.gnu.org/archive/html/discuss-gnuradio/2020-09/msg00055.html This is while attempting to build gr-osmosdr, basically the first real step in the instructions at

Re: [Discuss-gnuradio] GnuRadio build dependencies

2006-01-06 Thread Larry Doolittle
John et al. - On Fri, Jan 06, 2006 at 08:36:08PM -0500, John Ackermann N8UR wrote: BTW -- one of the challenges with Debian is that the automake version that's installed by default is 1.4. I don't know why they continue to include such an ancient version. You need to uninstall 1.4 and

Re: [Discuss-gnuradio] Binary packaging problems on x86_64

2005-12-18 Thread Larry Doolittle
Guys - On Sun, Dec 18, 2005 at 04:14:56PM -0800, Larry Doolittle wrote: I think Debian went this way for a while, but for the moment the 32-bit mode is relegated to emulation status: 64-bit libraries go in $prefix/lib, and 32-bit libraries go in $prefix/emu/ia32-linux/usr/lib. [chop

Re: [Discuss-gnuradio] Need some answers about FM TX

2005-10-01 Thread Larry Doolittle
Bob - On Sat, Oct 01, 2005 at 02:56:26PM +, Robert McGwier wrote: The paper you included and the mathematical and electrical phenomenon you are talking about applies to the analog to digital converter, the receiver only. [chop] You cannot do the reverse on transmit. It is a one to

Re: [Discuss-gnuradio] USRP drivers/test code

2005-09-27 Thread Larry Doolittle
Kalen and lurkers - On Tue, Sep 27, 2005 at 04:22:18PM +0200, Kalen Watermeyer wrote: I'm trying to re-use the USRP code (where I can) for my own SDR device which also uses the FX2 chip. I've managed to install the GnuRadio onto my Debian system and have built the USRP source code. I do

Re: [Discuss-gnuradio] anyone else having trouble compiling fusb_linux.cc?

2005-09-13 Thread Larry Doolittle
On Mon, Sep 12, 2005 at 08:33:09PM -0700, Eric Blossom wrote: On Thu, Sep 08, 2005 at 11:04:33AM -0700, Larry Doolittle wrote: The libusb folks maintain a libusb/linux.h that parallels the kernel-space linux/usbdevice_fs.h, but is designed to be used by user-space programs. So I grabbed

Re: [Discuss-gnuradio] anyone else having trouble compiling fusb_linux.cc?

2005-09-13 Thread Larry Doolittle
On Tue, Sep 13, 2005 at 09:47:45AM -0700, Larry Doolittle wrote: In Debian's case, /usr/include/linux/* comes not from the kernel, but from the linux-kernel-headers package. [chop] Ask yourself, why did the libusb decide to make and use their own version of this include file? Here

Re: [Discuss-gnuradio] anyone else having trouble compiling fusb_linux.cc?

2005-09-13 Thread Larry Doolittle
On Tue, Sep 13, 2005 at 09:47:45AM -0700, Larry Doolittle wrote: This category of problems including Linux kernel headers is not new. Several are tracked as Debian bugs to the linux-kernel-headers package, [chop] Our particular problem might be AMD64 specific, as reported in http

[Discuss-gnuradio] patch: adjustable transfer size for test_usrp_standard_rx

2005-09-09 Thread Larry Doolittle
It works for me --- /home/ldoolitt/cvs/usrp/host/apps/test_usrp_standard_rx.cc 2005-09-08 08:34:57.0 -0700 +++ test_usrp_standard_rx.cc2005-09-09 09:23:35.0 -0700 @@ -38,7 +38,7 @@ char *prog_name; -static bool test_input (usrp_standard_rx *urx, bool forever_p, FILE

[Discuss-gnuradio] anyone else having trouble compiling fusb_linux.cc?

2005-09-08 Thread Larry Doolittle
Something about debian sid broke compilation of fusb_linux.cc badly. My guess is that something subtle but important changed about the kernel/user header boundary. The first error is the funniest and easiest to bypass: error: #error do_div() does not yet support the C64 but it gets into much

Re: [Discuss-gnuradio] anyone else having trouble compiling fusb_linux.cc?

2005-09-08 Thread Larry Doolittle
I asked - Something about debian sid broke compilation of fusb_linux.cc badly. My guess is that something subtle but important changed about the kernel/user header boundary. [chop] I'm researching the problem now, but would appreciate any hints from people who have already seen this. It

Re: [Discuss-gnuradio] AGC using RXPGA on MxFE

2005-07-22 Thread Larry Doolittle
On Fri, Jul 22, 2005 at 05:11:35PM -0700, Eric Blossom wrote: On Sat, Jul 23, 2005 at 04:35:05AM +0500, Ahmad Sheikh wrote: But using usrp.source_c().set_pga() means that the feedback control be on the python level, which would mean that there would be a large latency in the gain control.

[Discuss-gnuradio] Re: GigE

2005-06-21 Thread Larry Doolittle
On the other side of what Harald Welte wrote While Gigabit Ethernet is certainly a ubiquitous and cheap interface, I wouldn't recommend it's use for USPR or alike devices. [the linux network stack] is not intended for an application which just wants to get big data streams with low latency and

Re: [Discuss-gnuradio] An interesting application for my new USRP... some input requested

2005-05-24 Thread Larry Doolittle
John - [chop], there will be three or four signals, on different frequency bands (near 3.58, 7.08, 14.08, and 21.08 MHz). The signal will be an unmodulated carrier (well, there will be some CW identification) and will be transmitted for about 10-15 minutes. It seems to me that with

[Discuss-gnuradio] usrp code on Avnet board

2005-05-09 Thread Larry Doolittle
Hi, everyone! My adaptation of USRP code for a conceptually related (rx-only) project has gone pretty well. I get a reliable 33 MB/s sustained data transfer from the FPGA to the host (same results on an AMD64 desktop and Intel Centrino laptop). The hardware platform is an Avnet Virtex-4 Eval

Re: [Discuss-gnuradio] 2.5 GS/sec 14-bit A/D converter

2005-05-02 Thread Larry Doolittle
Tim - On Mon, May 02, 2005 at 01:46:48PM +0930, Tim Ansell wrote: So where do we request free samples from :P Good question. I'd be happy with a data sheet, for the moment. I'm in the low-latency business, so this chip _may_ be useless to me. The question is how would you get this into a

[Discuss-gnuradio] crude compiler for WaveData

2005-04-15 Thread Larry Doolittle
Guys - I took a first stab at an FX2 WaveData compiler, since I don't touch Microsoft-only software (GPIFTool) with a 3.048 meter pole. This attempt is good enough to recreate the WaveData definition in usrp1_gpif.c from the following source code: -- cut here -- // GPIF Ctrl Outputs CTL 0=

[Discuss-gnuradio] usrp code on Avnet board

2005-04-12 Thread Larry Doolittle
On April 6, I posted: It looks like my code is in there, attempting to read the JTAG ID chain, and getting all 1's. Not the right answer, of course, but I'm on my way. I don't promise that anyone outside my project cares, but I now have a good start making an Avnet V4LX evaluation board