On Tue, Mar 13, 2007 at 01:10:53PM +0100, Davide Anastasia wrote: > Il giorno dom, 04/03/2007 alle 22.55 -0800, Peter Monta ha scritto: > > > The "short" version doesn't touch the data. You'll be able to > > unpack > > > it youself. > > > > Strange, I had some problem with rx_cfile not seeming to respect > > the width parameter. I'll try it again. > > Hi List, > I'm sorry to reuse this old topic, but I'm working on this feature. > > I recompile FPGA firmware using Peter' mod to obtain 1, 2, 4 and 8 bit > width sampling. I'm using this firmware and the script attached to try > it, but seems it doesn't work. I don't know if Peter (or someone else) > use correctly this mod. > > I receive that: > > [EMAIL PROTECTED]:/home/rocker/Tesi/My Works/GNU Radio > Experiment/rx_cfile# ./usrp_rx_cfile.py -m -f 1.575G -w 4 -R A -d 16 -N > 1000 output.samples.4 > Upload new firmware! > Using 4 bit sampling > format = 0x248 > set_format = False > Using RX d'board A: DBS Rx > USB sample rate 4M > > Format setting fail.
I suspect you're getting caught by the sanity check in the host library code. Take a look at usrp_standard.cc, usrp_standard_rx::set_format and remove the test for rx_format_is_valid. I think the right way to work around this is to add another field to the FPGA capability register that indicates whether or not the shifter is implemented. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
