Re: HELLO
http://www.wintsrtenkniss.com/ and if I give you what you want, you wont like it, and you wont want it anymore. When a mysterious garbage can is alleged, a scythe befriends the skinny fundraiser. A submarine about some chess board is statesmanlike. For example, the judge indicates that a lover defined by a tripod ignores the muddy reactor.<> ___ Discuss-gnu-gvb mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/discuss-gnu-gvb
Re: [Discuss-gnuradio] USRP and USB full speed (1.1) transmit
Remember that the GPIF is currently set up to DMA 256 16-bit values. Perhaps that part needs changing. The magic value is probably buried in the WaveData table in usrp_gpif.c I looked over the GPIF stuff with the Cypress tool I do not see any reference to transfer size in there. I am thinking the transfer size is set in the FPGA? Another thing you could try is to set up the GPIF in a non-flowstate mode. You'd need to use the Cypress tool to do this (or Larry Doolittle's perl (?) code. Running in full speed, you don't need to be able to burst data at 96MB/sec between the FX2 and FPGA. Do you have any idea what sort of changes to the 8051/FPGA code are involved? The machines I am using this with do not need high data rates (in fact more decimation in the FPGA would be helpful). Philip, do you have access to a logic analyzer? It would extremely helpful for determining what's really happening between the FX2 and FPGA. Agreed. Unfortunately, we are a communication group, not a digital hardware group. So we do not have a logic analyzer. Of course, these days, it is hard to tell the difference between a comm group and a digital hardware group. Philip Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Recommended RF Front End for USRP
Hello! I am a newcomper to SDR. I have scoured the mailing list but I cant find a definitive answer on the following questions (I suppose its been asked but I cant seem to find answers in the archives at any rate): 1. Can anybody recommend an RF Front end to be used with the USRP from Ettus research? I just got the Basic RX / Basic Tx daughterboard, motherboard + power supply and am looking for recommendations on what to buy so I can experiment with these things. My budget is a few hundred bucks. Can somebody recommend specific products one can buy off the shelf to hook into the Basic RX ? I want to be able to recieve RF signals from a walkie talkie radio and play them on my computer. 2. What is the simplest meaningful thing one can do to get started with SDR? (I am looking to bootstrap myself into this before trying to do anything serious so a fun learning project is what I am looking for.) I am looking forward to a learning adventure! Thanks and regards, Ranga ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Recommended RF Front End for USRP
Hi Ranga On 12/8/06, M. Ranganathan <[EMAIL PROTECTED]> wrote: Hello! I am a newcomper to SDR. I have scoured the mailing list but I cant find a definitive answer on the following questions (I suppose its been asked but I cant seem to find answers in the archives at any rate): 1. Can anybody recommend an RF Front end to be used with the USRP from Ettus research? I just got the Basic RX / Basic Tx daughterboard, motherboard + power supply and am looking for recommendations on what to buy so I can experiment with these things. My budget is a few hundred bucks. Can somebody recommend specific products one can buy off the shelf to hook into the Basic RX ? I want to be able to recieve RF signals from a walkie talkie radio and play them on my computer. This really depends on what you want to do. If you want to play with WiFi, Bluetooth etc, then you would need the RFX2400 for the 2.4GHz spectrum. If your walkie talkie uses the 400MHz ISM band (most likely), then you need the RFX400. 2. What is the simplest meaningful thing one can do to get started with SDR? (I am looking to bootstrap myself into this before trying to do anything serious so a fun learning project is what I am looking for.) The simplest thing is to hook up a metallic wire and try to receive AM/FM radio. Look at the examples in gnuradio-example. They will help you further. Thomas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP and USB full speed (1.1) transmit
On Fri, Dec 08, 2006 at 08:19:09AM -0500, Philip Balister wrote:
> >
> >Remember that the GPIF is currently set up to DMA 256 16-bit values.
> >Perhaps that part needs changing. The magic value is probably buried
> >in the WaveData table in usrp_gpif.c
>
> I looked over the GPIF stuff with the Cypress tool I do not see any
> reference to transfer size in there. I am thinking the transfer size
> is set in the FPGA?
Nope. The GPIF is in charge of the transfer. I'm assuming that what
you are seeing is that the FX2 is bursting a 256 word transfer, given
how you have programmed everything. BTW, I'm not kidding about this
being nearly impossible without a logic analyzer.
What's currently really happening on the GPIF bus? (Bring out the
relevant GPIF pins to the daughterboard debug headers.)
Looking at page 10-16 (10.3.2.2.2 Decision Point States) of the FX2
Technical Reference Manual (and dusting off my memory), the waveform
decision point is controlled by the "Transaction Count Expired"
signal. Page 10-24, "LOGIC FUNCTION Register", TERMA and/or TERMB
will be coded as RDY5 (or Transaction-Count Expiration, if
GPIFREADYCFG.5 = 1 (which it is))
See page 10-41, 10.4.3.1 "Transaction Counter".
To use the Transaction Counter for FIFO "x" load GPIFTCB3:0 with the
desired number of transactions. When a FIFO-READ or -WRITE waveform
is triggered on that FIFO, the GPIF will transfer the specified number
of bytes (or words, if WORDWIDE=1).
See ### HERE ### below (from usrp/firmware/src/usrp2/usrp_main.c):
Are you setting these to 32 instead of 256? If not, that's probably
the root of the problem.
// Next see if there are any "OUT" packets waiting for our attention,
// and if so, if there's room in the FPGA's FIFO for them.
if (g_tx_enable && !(EP24FIFOFLGS & 0x02)){ // USB end point fifo is not
empty...
if (fpga_has_room_for_packet ()){ // ... and FPGA has room for
packet
GPIFTCB1 = 0x01; SYNCDELAY;### HERE ###
GPIFTCB0 = 0x00; SYNCDELAY;### HERE ###
setup_flowstate_write ();
SYNCDELAY;
GPIFTRIG = bmGPIF_EP2_START | bmGPIF_WRITE; // start the xfer
SYNCDELAY;
while (!(GPIFTRIG & bmGPIF_IDLE)){
// wait for the transaction to complete
}
}
}
// See if there are any requests for "IN" packets, and if so
// whether the FPGA's got any packets for us.
if (g_rx_enable && !(EP6CS & bmEPFULL)){ // USB end point fifo is not
full...
if (fpga_has_packet_avail ()){ // ... and FPGA has packet
available
GPIFTCB1 = 0x01; SYNCDELAY; ### HERE ###
GPIFTCB0 = 0x00; SYNCDELAY; ### HERE ###
setup_flowstate_read ();
SYNCDELAY;
GPIFTRIG = bmGPIF_EP6_START | bmGPIF_READ;// start the xfer
SYNCDELAY;
while (!(GPIFTRIG & bmGPIF_IDLE)){
// wait for the transaction to complete
}
SYNCDELAY;
INPKTEND = 6; // tell USB we filled buffer (6 is our endpoint num)
}
}
> >Another thing you could try is to set up the GPIF in a non-flowstate
> >mode. You'd need to use the Cypress tool to do this (or Larry
> >Doolittle's perl (?) code. Running in full speed, you don't need to
> >be able to burst data at 96MB/sec between the FX2 and FPGA.
> >
>
> Do you have any idea what sort of changes to the 8051/FPGA code are
> involved? The machines I am using this with do not need high data
> rates (in fact more decimation in the FPGA would be helpful).
Not really. This is one of those RTFM, and watch with the logic
analyzer games.
> >Philip, do you have access to a logic analyzer?
> >It would extremely helpful for determining what's really happening
> >between the FX2 and FPGA.
> >
>
> Agreed. Unfortunately, we are a communication group, not a digital
> hardware group. So we do not have a logic analyzer. Of course, these
> days, it is hard to tell the difference between a comm group and a
> digital hardware group.
Unless you get lucky and the modification above labeled "HERE" works,
you're _really_ going to want access to a logic analyzer. Otherwise
you can't tell what's going on. There must be somebody in one of the
engineering buildings who's got one you can borrow for a couple of
days. It doesn't have to be blazingly fast or have a tremendous
number of channels. 32 channels will be more than enough. You could
get by with 16 if you had to.
Good luck!
Eric
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Re: [Discuss-gnuradio] Recommended RF Front End for USRP
On Fri, Dec 08, 2006 at 09:04:34AM -0800, Thomas Schmid wrote: > Hi Ranga > > On 12/8/06, M. Ranganathan <[EMAIL PROTECTED]> wrote: > > > >Hello! > > > >I am a newcomper to SDR. I have scoured the mailing list but I cant find > >a definitive answer on the following questions (I suppose its been asked > >but I cant seem to find answers in the archives at any rate): > > > >1. Can anybody recommend an RF Front end to be used with the USRP from > >Ettus research? I just got the Basic RX / Basic Tx daughterboard, > >motherboard + power supply and am looking for recommendations on what to > >buy so I can experiment with these things. My budget is a few hundred > >bucks. Can somebody recommend specific products one can buy off the > >shelf to hook into the Basic RX ? I want to be able to recieve RF > >signals from a walkie talkie radio and play them on my computer. > > This really depends on what you want to do. If you want to play with > WiFi, Bluetooth etc, then you would need the RFX2400 for the 2.4GHz > spectrum. If your walkie talkie uses the 400MHz ISM band (most > likely), then you need the RFX400. > > >2. What is the simplest meaningful thing one can do to get started with > >SDR? (I am looking to bootstrap myself into this before trying to do > >anything serious so a fun learning project is what I am looking for.) > > The simplest thing is to hook up a metallic wire and try to receive > AM/FM radio. Look at the examples in gnuradio-example. They will help > you further. > > Thomas All true. Also, generally speaking, you don't want to start with the Basic Tx or Basic Rx. Those are really designed to work with an external tuner, transverter, etc. Pick one of the RFX-* boards. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Recommended RF Front End for USRP
Thomas, Eric and Dan, thanks for your replies! Looking at Ettus Research web page and given that I have already ordered a BasicRx board + USRP, can a TVRX (50 MHz to 870 MHz Receiver) do the trick in conjunction with the BasicRx if I want to receive VHF/UHF from a walkie talkie ? Seems like a cheaper option than the RFX400 (which I will get if there's no choice). Is it simpler to just use an RFX400 rather than BasicRx + TVRX even if this is an option? ( I want to reduce the learning curve and make life simple given that I am a beginner. ) As for hooking up a long piece of wire to recieve AM/FM radio, I assume I don't need any hardware other than BasicRx and USRP Mother board (please correct this if I am wrong). Ranga Eric Blossom wrote: On Fri, Dec 08, 2006 at 09:04:34AM -0800, Thomas Schmid wrote: Hi Ranga On 12/8/06, M. Ranganathan <[EMAIL PROTECTED]> wrote: Hello! I am a newcomper to SDR. I have scoured the mailing list but I cant find a definitive answer on the following questions (I suppose its been asked but I cant seem to find answers in the archives at any rate): 1. Can anybody recommend an RF Front end to be used with the USRP from Ettus research? I just got the Basic RX / Basic Tx daughterboard, motherboard + power supply and am looking for recommendations on what to buy so I can experiment with these things. My budget is a few hundred bucks. Can somebody recommend specific products one can buy off the shelf to hook into the Basic RX ? I want to be able to recieve RF signals from a walkie talkie radio and play them on my computer. This really depends on what you want to do. If you want to play with WiFi, Bluetooth etc, then you would need the RFX2400 for the 2.4GHz spectrum. If your walkie talkie uses the 400MHz ISM band (most likely), then you need the RFX400. 2. What is the simplest meaningful thing one can do to get started with SDR? (I am looking to bootstrap myself into this before trying to do anything serious so a fun learning project is what I am looking for.) The simplest thing is to hook up a metallic wire and try to receive AM/FM radio. Look at the examples in gnuradio-example. They will help you further. Thomas All true. Also, generally speaking, you don't want to start with the Basic Tx or Basic Rx. Those are really designed to work with an external tuner, transverter, etc. Pick one of the RFX-* boards. Eric -- M. Ranganathan Advanced Networking Technologies Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. tel:301 975 3664 , fax:301 590 0932 http://w3.antd.nist.gov/ Advanced Networking Technologies For the People! ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Recommended RF Front End for USRP
On Fri, Dec 08, 2006 at 02:27:35PM -0500, M. Ranganathan wrote: > Thomas, Eric and Dan, thanks for your replies! > > Looking at Ettus Research web page and given that I have already ordered > a BasicRx board + USRP, can a TVRX (50 MHz to 870 MHz Receiver) do the > trick in conjunction with the BasicRx if I want to receive VHF/UHF from > a walkie talkie? If you're OK with receive only, a TVRX is a great way to get started. > Seems like a cheaper option than the RFX400 (which I > will get if there's no choice). Is it simpler to just use an RFX400 > rather than BasicRx + TVRX even if this is an option? ( I want to reduce > the learning curve and make life simple given that I am a beginner. ) > As for hooking up a long piece of wire to recieve AM/FM radio, I assume > I don't need any hardware other than BasicRx and USRP Mother board > (please correct this if I am wrong). With a piece of wire you've got zero selectivity. You can receive strong FM stations, but because of where the images fall (based on the 64 MS/sec A/D), you can't for example distinguish 96M - 1M from 96M + 1M. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Recommended RF Front End for USRP
On Friday 08 December 2006 14:27, M. Ranganathan wrote: > Looking at Ettus Research web page and given that I have already ordered > a BasicRx board + USRP, can a TVRX (50 MHz to 870 MHz Receiver) do the > trick in conjunction with the BasicRx if I want to receive VHF/UHF from > a walkie talkie ? As a clarification, you do not need the BasicRX to use the TVRX unless you want the second channel. -- Lamar Owen Director of Information Technology Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 (828)862-5554 www.pari.edu ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Setting up the USRP
We are putting a new USRP module in service. Is there some firmware setup required, and if so what is the procedure. The 'manual' mentions if the LED is blinking in a certain way, that the firmware has not been loaded, but there's doesn't seem to be a paragraph on how to load the firmware. Thanks John Clark. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Setting up the USRP
John Clark wrote: > We are putting a new USRP module in service. Is there some firmware > setup required, > and if so what is the procedure. The 'manual' mentions if the LED is > blinking in a > certain way, that the firmware has not been loaded, but there's > doesn't seem to > be a paragraph on how to load the firmware. The firmware is loaded automatically whenever you run any of the utilities/scripts/etc that use the USRP, e.g. test_usrp_standard_rx in the usrp/host/apps directory. -Dan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Recommended RF Front End for USRP
Also, generally speaking, you don't want to start with the Basic Tx or Basic Rx. Those are really designed to work with an external tuner, transverter, etc. Can someone who is using their BasicRX in this way describe their setup? Thanks, /jordan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Setting up the USRP
Dan Halperin schrieb: John Clark wrote: We are putting a new USRP module in service. Is there some firmware setup required, and if so what is the procedure. The 'manual' mentions if the LED is blinking in a certain way, that the firmware has not been loaded, but there's doesn't seem to be a paragraph on how to load the firmware. The firmware is loaded automatically whenever you run any of the utilities/scripts/etc that use the USRP, e.g. test_usrp_standard_rx in the usrp/host/apps directory. Yeah, I just tried the test_.. and it seems to work. I don't know what caused the crash on the first round... Thanks John Clark. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP/RFX2400 block diagram
Hi, I am looking for USRP/RFX2400 bloack diagrams, but it seems that the files at the link below are moved/deleted. If anybody has the diagrams mentioned below, pls send them to me directly. Thanks, Rohit - Lee Patton Tue, 29 Aug 2006 21:11:31 -0700 I've taken a shot at coming up with block diagrams for the USRP and RFX2400. The diagram for the USRP is the result of information I've gleaned from different messages in the list, data sheets, and block diagrams created by other GNU Radio users (specifically, Achilleas Anastasopoulos). The RFX2400 diagram was created from Matt's drawings and associated data sheets. The diagrams can be found here: http://www.pattoncentral.org/gnuradio/diagram/ Hopefully this will help clear up questions regarding how the I/Q sampling happens. Please let me know if (when) you see something that needs fixed. Thanks, Lee ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] APT signals
G'day, Ok, let's try it this way: Is there someone with the equipment and time to record APT signals transmitted by NOAA satellites in the 137MHz band? Alternatively, geostationary weather satellites transmit WEFAX pictures at around 1691MHz (Hey, were are the guys that tuned into GPS spectrum which is right next door... :-) I want to demodulate the AM/FM 2400Hz sub-carrier signal and display the image. Currently I'm not in the position to capture the spectrum myself due to lack of equipment but this is about to change. I can provide info on satellite passes and frequencies for your location. cheerio Berndt On Wednesday 06 December 2006 14:20, Berndt Josef Wulf wrote: > G'day, > > Has anyone sampled NOAA or METEOR signals in the 137MHz spectrum which they > wouldn't mind sharing the spectrum data file(s)? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] APT signals
On Sat, Dec 09, 2006 at 03:14:28PM +1030, Berndt Josef Wulf wrote: > G'day, > > Ok, let's try it this way: > > Is there someone with the equipment and time to record APT signals > transmitted > by NOAA satellites in the 137MHz band? Alternatively, geostationary weather > satellites transmit WEFAX pictures at around 1691MHz (Hey, were are the guys > that tuned into GPS spectrum which is right next door... :-) > > I want to demodulate the AM/FM 2400Hz sub-carrier signal and display the > image. Currently I'm not in the position to capture the spectrum myself due > to lack of equipment but this is about to change. > > I can provide info on satellite passes and frequencies for your location. > > cheerio Berndt > > On Wednesday 06 December 2006 14:20, Berndt Josef Wulf wrote: > > G'day, > > > > Has anyone sampled NOAA or METEOR signals in the 137MHz spectrum which they > > wouldn't mind sharing the spectrum data file(s)? I haven't, and I'd like the data too! Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] APT signals
Berndt, I can grab some APT audio with a USRP and Bob McGwier's rx apt code.Or are you looking for the raw data coming off the TVRF -- could probably do that as well but will need some pointers as to how to grab the raw sample off the TVRF card -- suppose one just takes the rxapt python code and hacks it to dump to a file sink? I've also got a Hamtronics R139 I can grab audio from -- although it's gotten a bit deaf of late. Pics from it can be seen @: http://oddjob.yi.org:/wxpics/index.html Regards, Bill At 10:44 PM 12/8/2006, Berndt Josef Wulf wrote: G'day, Ok, let's try it this way: Is there someone with the equipment and time to record APT signals transmitted by NOAA satellites in the 137MHz band? Alternatively, geostationary weather satellites transmit WEFAX pictures at around 1691MHz (Hey, were are the guys that tuned into GPS spectrum which is right next door... :-) I want to demodulate the AM/FM 2400Hz sub-carrier signal and display the image. Currently I'm not in the position to capture the spectrum myself due to lack of equipment but this is about to change. I can provide info on satellite passes and frequencies for your location. cheerio Berndt On Wednesday 06 December 2006 14:20, Berndt Josef Wulf wrote: > G'day, > > Has anyone sampled NOAA or METEOR signals in the 137MHz spectrum which they > wouldn't mind sharing the spectrum data file(s)? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] APT signals
G'day, I'm looking for raw data. Don't you use the usrp_rx_cfile.py script to capture frequency spectrum? e.g.: ./usrp_rx_cfile.py -d 32 -f 137.5M You may need to play with the options -R, -g, -N (subdev, gain and number of samples) depending on your setup where -R [A|B]site where the tvrx is plugged in -g <0..115> gain (default is mid-point @ 58) -Nnumber of samples (e.g samplerate * record time in sec) I usually have to specify the frequency and the decimation. I want to write my own decoder and an image sink to ultimately display the pictures received and hence audio files want do the trick. cheerio Berndt On Saturday 09 December 2006 14:29, Bill Tracey wrote: > Berndt, > > I can grab some APT audio with a USRP and Bob McGwier's rx apt code.Or > are you looking for the raw data coming off the TVRF -- could probably do > that as well but will need some pointers as to how to grab the raw sample > off the TVRF card -- suppose one just takes the rxapt python code and hacks > it to dump to a file sink? > > I've also got a Hamtronics R139 I can grab audio from -- although it's > gotten a bit deaf of late. Pics from it can be seen @: > http://oddjob.yi.org:/wxpics/index.html > > Regards, > > Bill > > At 10:44 PM 12/8/2006, you wrote: > >G'day, > > > >Ok, let's try it this way: > > > >Is there someone with the equipment and time to record APT signals > >transmitted > >by NOAA satellites in the 137MHz band? Alternatively, geostationary > > weather satellites transmit WEFAX pictures at around 1691MHz (Hey, were > > are the guys that tuned into GPS spectrum which is right next door... :-) > > > >I want to demodulate the AM/FM 2400Hz sub-carrier signal and display the > >image. Currently I'm not in the position to capture the spectrum myself > > due to lack of equipment but this is about to change. > > > >I can provide info on satellite passes and frequencies for your location. > > > >cheerio Berndt > > > >On Wednesday 06 December 2006 14:20, Berndt Josef Wulf wrote: > > > G'day, > > > > > > Has anyone sampled NOAA or METEOR signals in the 137MHz spectrum which > > > they wouldn't mind sharing the spectrum data file(s)? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
