> On May 12, 2017, at 4:38 PM, M Pitman <mpitman1...@gmail.com> wrote: > > I've encountered a big issue trying to provide accurate timing of pulses sent > from pru0. I'm toggling one pin and trying to set another pin low for just a > single low cycle of the first pin. This worked fine in assembler language > but in C the timing of the second pin based on the first pin being low is not > consistent. It gets delayed somehow and so sometimes goes low when the first > pin is high but at other times when the first pin is low. Is this possibly > an overhead problem with the C compiler and thus cannot be trusted for > accurate timing?
The way to see what is going on is to leave the assembly around. For the TI compiler, see http://www.ti.com/lit/ug/spruhv7a/spruhv7a.pdf Look for the c_src_interlist option. > If so, is there a way to leave this section in assembler but still easily > receive analog data from the Beaglebone and communicate with the ARM? Yes, you can use either inline assembly or follow C calling conventions in your assembly source and call the assembly function from C. > > Thanks, > > Mike Pitman -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/0300CC4C-2786-4CF0-A7B3-55E325DC039B%40gmail.com. For more options, visit https://groups.google.com/d/optout.
