Can't detect short pulses with GPIO

[BDub]

I'm not sure if this will help, but I implemented pulseIn() with interrupts like this:

Photon PulseIn Function

I was working with a PING sensor tonight and decided to get the pulseIn() function working… instead of a blocking call to pulseIn() which I had working but it just seemed kind of slow, I decided to use interrupts and this is what came out of it. It really needs a library written for it to make it more friendly, but it works rather well. The interrupts themselves will block to do the timing, but you don’t have to block waiting for the first edge. You kind of do for the FALLING edge though for…

Also, and non-interrupt driven pulseIn() will be available in 0.4.7 firmware.

I'm not exactly sure what you'd like me to test, can you spell it out please?

Also, digitalWriteFast(D0, HIGH/LOW) is not as fast as pinSetFast(D0) and pinResetFast(D0). If I remember correctly it's about 5 times slower at 200ns or so vs 41ns.