Honored Contributor
Honored ContributorThanks, these tips are helpful. I have a lot to learn about the language and field in general.
A number of flip-flops and a counter are clocked with a signal that changes frequency (so to speak): I research optics and am working on a new type of interferometer. I need to clock registers each time the distance between the reference and source signals changes by about 0.3 microns (1/2 HeNe laser wavelength). Since the reference signal is not always moving at constant speed, the time between the counts is not constant. Before diving into the FPGA, I have had success using discrete IC's, but for everything I need to do it gets bulky very fast and wiring can be a headache in the prototype phase (for the edge detection I used a one-shot 74221 IC, this is the step I am trying to emulate now, everything else in my program seems to get the job done). I am not an electrical engineer or computer scientist so I appreciate your feedback; turned out I needed custom electronics in my research so I've had to learn everything the hard way.
