Works on pulses from 10 microseconds to 3 minutes in length. The timing of this function has been determined empirically and will probably show errors in shorter pulses. Returns the length of the pulse in microseconds or 0 if no complete pulse was received within the timeout. For example, if value is HIGH, pulseIn() waits for the pin to go HIGH, starts timing, then waits for the pin to go LOW and stops timing. Reads a pulse (either HIGH or LOW) on a pin. Reference Language | Libraries | Comparison | Changes
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