On Wed, Feb 25, 2009 at 11:05:02AM -0500, David VanHorn wrote: > :) > > Interrupt latency. > > I have an app on a Mega32L, running at 4 MHz. > I'm trying to measure the widths of pulses that could be as short as 5uS. > > The theory was to detect the first rising edge, and zero T1. > Then on the second rising edge, grab the count from T1, which is > running at CK/1
Use an input capture I/O bit and let the hardware take a snapshot of the timer value when the edge is detected. Zero latency as long as it doesn't occur faster than you can reset the input capture.. -- David Kelly N4HHE, dke...@hiwaay.net ======================================================================== Whom computers would destroy, they must first drive mad. _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
