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Diffstat (limited to 'docs/source/arduino/randomseed.rst')
-rw-r--r-- | docs/source/arduino/randomseed.rst | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/docs/source/arduino/randomseed.rst b/docs/source/arduino/randomseed.rst deleted file mode 100644 index b0b5d71..0000000 --- a/docs/source/arduino/randomseed.rst +++ /dev/null @@ -1,70 +0,0 @@ -.. _arduino-randomseed: - -randomSeed(seed) -================ - -Description ------------ - -randomSeed() initializes the pseudo-random number generator, -causing it to start at an arbitrary point in its random sequence. -This sequence, while very long, and random, is always the same. - - - -If it is important for a sequence of values generated by random() -to differ, on subsequent executions of a sketch, use randomSeed() -to initialize the random number generator with a fairly random -input, such as analogRead() on an unconnected pin. - - - -Conversely, it can occasionally be useful to use pseudo-random -sequences that repeat exactly. This can be accomplished by calling -randomSeed() with a fixed number, before starting the random -sequence. - - - -Parameters ----------- - -long, int - pass a number to generate the seed. - - - -Returns -------- - -no returns - - - -Example -------- - -:: - - long randNumber; - - void setup(){ - Serial.begin(9600); - randomSeed(analogRead(0)); - } - - void loop(){ - randNumber = random(300); - Serial.println(randNumber); - - delay(50); - } - - - -See also --------- - - -- `random <http://arduino.cc/en/Reference/Random>`_ - - |