On 05/27/2013 07:54 AM, Florian Schlembach wrote: > I am trying to build a flow graph in GNU Radio Companion consisting of a > USRP source block and a FFT sink. During runtime, I would like to send a > user settings register to the USRP. > Fortunately, everything is already employed so I only need to build some > sort of variable control. By now, that already works out quite well > using the WX GUI Widgets. A user settings command basically be send to > the USRP using the > > void set_user_register(const uint8_t addr, const uint32_t data, size_t > mboard) > > function that is part of the USRP source block. When changing the two > variables $user_reg_addr and $user_reg_data, GRC invokes the callback > function that I have defined in the file > gnuradio/gr-uhd/grc/gen_uhd_usrp_blocks.py: > > <callback>set_user_register(\$user_reg_addr, > \$user_reg_data,uhd.ALL_MBOARDS)</callback> > > If I now change either $user_reg_addr or $user_reg_data, the callback > function is executed, which is not intended. In turn, I first would like > to execute the callback function after I have modified *both* variables. > > Is there a convenient way to execute the callback function on a button > click or something similar?
Perhaps it would work better to treat the input as one variable. Use a tuple of numbers instead. You can make a text entry widget w/ converter type "Evaluate". The callback would probably look more like this: <callback>set_user_register(*\$user_reg_args)</callback> -josh > > > _______________________________________________ > 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
