Kathy, those calls were libusrp calls, IIRC. This API was abandoned a long time ago, and I'm not even sure myself what they exactly do.
You might be able to use set_gpio_attr(), but I can't tell you exactly how the commands would look like. M On 29.09.2015 11:24, Kathy Hertzog wrote: > Hi everyone! > I have a GNURadio project running on Kubuntu 14.04 using GNURadio > Companion v3.7.2.1 along with several OOT blocks that I wrote. (I know > I'm a bit behind on the releases.) A lot of the code was originally > written in v3.6 so some of what follows may be me conflating old > interface with newer. > > I have custom hardware that uses Ettus USRP boards. I've been bypassing > the custom front-end and just adjusting the expected center frequency on > the UHD: USRP Source block but now I'd like to actually control the > hardware. That means I'd like to access the write_eo() and write_io() > calls so I can enable and initialize the output pins on the USRP and > write to an external PLL LO for down conversion to set frequency. > > My 3.6-based code just called write_io from the usrp instance in C++ code. > > But I can't figure out how to get to the USRP write_eo and write_io > calls from a 3.7.2.1 GNURadio Companion starting point. I've tried > adding code to the Python output of GRC like this: > > ### > self.u = uhd.usrp_source( device_addr="fpga=usrp1_fpga_4rx.rbf", > > stream_args=uhd.stream-args(cpu_format="fc32", > > channels=range(4),),) > > # I added this line to GNURadio Companion output code > self.u.write_oe (1, 0xFFFF, 0xFFFF) > ### > > but Python can't find the write_oe or write_io methods. > > Am I missing an import in Python? A path? Is there anyway to do this in > the GRC blocks so I don't have to modify the output Python? Do I have to > do this as an OOT block and call the uhd usrp make myself? (although I > don't see the write_io or write_oe methods in usrp_source.h anymore) > > Thanks in advance, > Kathy Hertzog > > > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
