Hi Martin or others who can support me, I have a problem which is similar as Frank's: I have an E310 and I want to receive a and external trigger on a pin which starts an acquisition process of a burst of samples from the radio source.
Stated that I have to remove the box around the E310 to have access to the GPIO ports (not a problem!), according to what I have read so far in this thread, no way to reach my goal but using C++ (no GRC!). Not an easy task for me but I do hope I can do it. What I need you support about is related to the right approach I should follow. I would think that I should write a "while" loop which runs in ARM processors where one on the available GPIO port is constantly monitored: when the trigger is detected the acquisition process of a burst of samples from the radio source is started and, once it has been completed, the flow goes back to the GPIO port monitoring. Is there any example code I be inspired from? OF course I have to study what can be found in the manual page "The E3x0/X3x0 Front Panel GPIO", but, together with the suggested gpio.cpp example under UHD, it looks like there is more emphasis on the ATR mechanism, which - I think - has nothing to do with the problem I have to solve. Martin or others, could you please comment on my problem? TIA! BR, Maurizio. PS If you think that, according to what I have understood so far, I will need to use RFNoC in order to cope with the sampling speed constraints of the acquisition process of a burst of samples from the radio source, you might well understand how much I need your help, and not just for this post... -- View this message in context: http://gnuradio.4.n7.nabble.com/Front-Panel-GPIO-on-Ettus-X310-tp53979p55274.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
