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Diffstat (limited to 'source/arduino/unsignedlong.rst')
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diff --git a/source/arduino/unsignedlong.rst b/source/arduino/unsignedlong.rst new file mode 100644 index 0000000..1bdb434 --- /dev/null +++ b/source/arduino/unsignedlong.rst @@ -0,0 +1,63 @@ +.. _arduino-unsignedlong: + +unsigned long +============= + +Description +----------- + +Unsigned long variables are extended size variables for number +storage, and store 32 bits (4 bytes). Unlike standard longs +unsigned longs won't store negative numbers, making their range +from 0 to 4,294,967,295 (2^32 - 1). + + + +Example +------- + +:: + + unsigned long time; + + void setup() + { + Serial.begin(9600); + } + + void loop() + { + Serial.print("Time: "); + time = millis(); + //prints time since program started + Serial.println(time); + // wait a second so as not to send massive amounts of data + delay(1000); + } + +Syntax +------ + +:: + + unsigned long var = val; + + + + +- var - your long variable name +- val - the value you assign to that variable + + + +See Also +-------- + + +- `byte <http://arduino.cc/en/Reference/Byte>`_ +- `int <http://arduino.cc/en/Reference/Int>`_ +- `unsigned int <http://arduino.cc/en/Reference/UnsignedInt>`_ +- `long <http://arduino.cc/en/Reference/Long>`_ +- `Variable Declaration <http://arduino.cc/en/Reference/VariableDeclaration>`_ + + |