PulseIn

Syntax:

    PulseIn pin, user_variable, time units

Command Availability:

Available on all microcontrollers.

Explanation:

The PulseIn command will monitor the specified pin when the pin is high, and then measure the high time. It will store the time in the user variable. The user variable must be a WORD if returned units are expected to be > 255 (Example: Pulse is 500 ms)

PulseIn is not recommended for accurate measurement of microsecond pulses

Example:

    #chip 12F629, 4
    #config INTRC_OSC_NOCLKOUT

    Dir GPIO.0 In
    Dim TimeResult as WORD

    Do while GPIO.0 = Off        'Wait for next positive edge to start measuring
    Loop

    Pulsein GPIO.0, TimeResult, ms