Re: [Discuss-gnuradio] Linux version of Quartus II kit?
> "Daniel" == Daniel O'Connor <[EMAIL PROTECTED]> writes: Daniel> On Fri, 11 Nov 2005 11:40, David R. Palchak wrote: >> Am I right in assuming that a modified FPGA design needs to be >> compiled using the Quartus II toolchain? I ask because as near as I >> can tell, the only free version of the Quartus II software requires a >> windows setup (which I don't have). Has anyone found an alternative >> solution? Daniel> It might work under Wine. I tried several times, but in most cases wine hang with creating the licence server. One reason for that is know (detect a broken pipe) and a test case showing the missbehaviour is in the wine test suite, but the problem is hard to tackle. I'll nag some more capable wine developpers about that. Bye -- Uwe Bonnes[EMAIL PROTECTED] Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt - Tel. 06151 162516 Fax. 06151 164321 -- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Using USRP w/o Daughterboard's
On Thu, Nov 10, 2005 at 05:18:26PM -0700, Robitaille, Michael wrote: > Thanks Eric, I got my direct interface to the USRP working and the > usrp_oscope.py and ursp_fft.py examples work. I am very glad that the > software defaults to a Basix Rx DB configuration when it finds no DB. > > One item that I am trying to chase down is that when I input a square wave > at low frequencies (1 kHz to 10 kHz) I see a droop in the amplitude. The > signal at the AD9862 input pins looks good. Can the droop be cause by the > decimation filter? > Did you turn off the DC removal control loop in the FPGA? Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] using 2nd Basic-RX board ?
At 07:58 PM 11/10/2005 -0800, you wrote: On Thu, Nov 10, 2005 at 06:23:57PM -0500, cswiger wrote: > > But when I try to use it in my script I get a flatline: > > self.dut_out = usrp.source_c(0, decim, 4, gru.hexint(0xf0f2f1f0), The FPGA contains only 2 instance of the DDC, not 4, hence your problem... OK - I just remembered that while waking up. Actually it is better to use two receive channels and switch the ports with the mux - they don't have to run concurrently. It just saves from having to move test jig cables around. Changing mux shouldn't change ddc phase. Tks --Chuck ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Using USRP w/o Daughterboard's
No I have not yet made that change. I have been trying to figure out how to use it. I don't understand the brief description /*! * \brief Enable/disable automatic DC offset removal control loop in FPGA * * \param bits which control loops to enable * \param mask which \p bits to pay attention to * * If the corresponding bit is set, enable the automatic DC * offset correction control loop. * * * The 4 low bits are significant: * * ADC0 = (1 << 0) * ADC1 = (1 << 1) * ADC2 = (1 << 2) * ADC3 = (1 << 3) * * * By default the control loop is enabled on all ADC's. */ I don't know what to use for bit or mask values. Is this like the mux values? Please explain how you determine the bit and mask values to use? Mike Original Message: - From: Eric Blossom [EMAIL PROTECTED] Date: Fri, 11 Nov 2005 01:47:29 -0800 To: [EMAIL PROTECTED], discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] Using USRP w/o Daughterboard's On Thu, Nov 10, 2005 at 05:18:26PM -0700, Robitaille, Michael wrote: > Thanks Eric, I got my direct interface to the USRP working and the > usrp_oscope.py and ursp_fft.py examples work. I am very glad that the > software defaults to a Basix Rx DB configuration when it finds no DB. > > One item that I am trying to chase down is that when I input a square wave > at low frequencies (1 kHz to 10 kHz) I see a droop in the amplitude. The > signal at the AD9862 input pins looks good. Can the droop be cause by the > decimation filter? > Did you turn off the DC removal control loop in the FPGA? Eric mail2web - Check your email from the web at http://mail2web.com/ . ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Reducing the ADC sample rate
I would like to reduce the ADC sample rate from the default 62.5 MS/s. I have found the set_adc_clk_div in the usrp0_rx class. Is this still usable. I tried to use it in the follow: u = usrp.source_c() u.set_adc_clk_div(6) and I get errors? I did 'from gnuradio import usrp0' and still get the error. I also tried u = usrp0.source_c() Mike mail2web - Check your email from the web at http://mail2web.com/ . ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Reducing the ADC sample rate
On Fri, Nov 11, 2005 at 12:09:13PM -0500, [EMAIL PROTECTED] wrote: > I would like to reduce the ADC sample rate from the default 62.5 MS/s. I > have found the set_adc_clk_div in the usrp0_rx class. Is this still > usable. I tried to use it in the follow: No. That was only implemented in the Rev 0 USRP. FYI, the ADC sample rate on the current boards is 64MS/sec. > I did 'from gnuradio import usrp0' and still get the error. I also tried > > u = usrp0.source_c() > You don't have a usrp0, so this is moot. Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] A/D converters and related expriments
Can I ask if there is a beginners list for electronics? I need to know the subject of Hispeed A/D bit deep and esentials. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
