I'm not certain it is the micros() overflowing, but my Arduino does in fact stop working after 70 minutes. The part I think is overflowing is pulseIn(pps, HIGH, 2000000); fds = micros(); pulseIn(freq, HIGH); fde = micros(); freqdelay = (3000 + adj) - (fde - fds); But I don't un…

Overflow, micros() ???

system January 27, 2011, 12:42am 5

Subtraction after rollover is guaranteed to give the correct results. 0 - 0xFFFF = 1.

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