I hope this is the right forum. I need a way to monitor some serial data. I'm trying to monitor if a fog machine is still warming up. The signal starts at high logic for about 1ms and then drops to low. Then during the next approximately 1ms there is three short pulses and then one more short one if it's still warming up. Then it starts all over again.
The only difference is that pulse, so ideally I guess I just need a way to count the pulses. I know I've probably got to use interrupts but otherwise I'm pretty clueless of where to go from here.
Here is the picture of the scope the circled pulse is the one I'm try to detect. When that pulse is not present the rest of the signal is still identical.
Thanks in advance!