On 07/16/2017 12:54 AM, Sivan Toledo via USRP-users wrote: > OK, tried it and I clearly need to call the "make" functions, otherwise > the code segfaults.
Yes, UHD won't allocate memory implicitly in the C-API. -- M > > On Sat, Jul 15, 2017 at 7:02 PM, Sivan Toledo <stol...@tau.ac.il > <mailto:stol...@tau.ac.il>> wrote: > > Like question 1: > > Do I need to "make" the uhd_meta_range_handle or will the call > to uhd_usrp_get_rx_gain_range make it? > > If I need to make it, I assume that I also need to free it. > If I don't need to make it, do I still need to free it? > > On Sat, Jul 15, 2017 at 1:46 PM, Sivan Toledo <stol...@tau.ac.il > <mailto:stol...@tau.ac.il>> wrote: > > I'm converting a CPP code from UHD 3.8.5 to the C api for 3.10. > (The main reason for the conversion is that I binaries of my CPP > programs don't run on both Ubuntu 14 and 16 because of > incompatible libboost; hopefully using the C API and the Ubuntu > uhd-host package will resolve this). > > I have a few questions: > > 1. Is the following correct, or do I have to "make" the > string_vector_handle before I pass it to get_rx_gain_names? The > manual says to always make, but my intuition is that > get_rx_gain_names will make it for me, given that it gets a > pointer to the handle, not the handle itself. > > uhd_string_vector_handle gain_names; > uhd_usrp_get_rx_gain_names(usrp, 0 /* channel */, &gain_names); > > 2. Is there a C api version of set_rx_gain > > <https://files.ettus.com/manual/classuhd_1_1usrp_1_1multi__usrp.html#a8234968ad1fefef299ef9541cc193915> > (double > gain, size_t chan=0)? In the header files I found only > set_rx_gain but with a gain_name argument. The CPP api has two > overloaded methods, one with a gain-name argument and the other > without it. Is the convenience method missing from the C API? > Can I invoke it by passing NULL for the gain name? > > Thanks, Sivan Toledo > > > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
