In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

I just tried this on the Parallax professional development board and it worked just as it should.

You do realize that the pulse on RC.0 is going to be VERY small ?
Are you sure the RB.0 pin is going low from your 1hz signal ?
Do you have an oscilloscope ? If yes, then check the RB.0 and RC.0 pins with it.

P.S. I also tried the program I posted in your other thread (try to keep things in one thread it makes life easier) and that program worked fine too. RC.0 went high on the first pulse, then stayed high.

Are you using a development board ? Or just the SX on a breadboard ?

Bean.

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