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Diffstat (limited to 'docs/source/arduino/pulsein.rst')
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diff --git a/docs/source/arduino/pulsein.rst b/docs/source/arduino/pulsein.rst deleted file mode 100644 index 568d992..0000000 --- a/docs/source/arduino/pulsein.rst +++ /dev/null @@ -1,79 +0,0 @@ -.. _arduino-pulsein: - -pulseIn() -========= - -Description ------------ - -Reads a pulse (either HIGH or LOW) on a pin. 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. Returns the length of the pulse in microseconds. -Gives up and returns 0 if no pulse starts within a specified time -out. - - - -The timing of this function has been determined empirically and -will probably show errors in longer pulses. Works on pulses from 10 -microseconds to 3 minutes in length. - - - -Syntax ------- - -pulseIn(pin, value) -pulseIn(pin, value, timeout) - - - -Parameters ----------- - -pin: the number of the pin on which you want to read the pulse. -(*int*) - - - -value: type of pulse to read: either -`HIGH <http://arduino.cc/en/Reference/Constants>`_ or -`LOW <http://arduino.cc/en/Reference/Constants>`_. (*int*) - - - -timeout (optional): the number of microseconds to wait for the -pulse to start; default is one second (*unsigned long*) - - - -Returns -------- - -the length of the pulse (in microseconds) or 0 if no pulse started -before the timeout (*unsigned long*) - - - -Example -------- - -:: - - - - int pin = 7; - unsigned long duration; - - void setup() - { - pinMode(pin, INPUT); - } - - void loop() - { - duration = pulseIn(pin, HIGH); - } - - |