Reference Language (extended) | Libraries | Comparison | Changes
See the extended reference for more advanced features of the Arduino languages and the libraries page for interfacing with particular types of hardware.
Arduino programs can be divided in three main parts: structure, values (variables and constants), and functions. The Arduino language is based on C/C++.
StructureControl StructuresFurther SyntaxArithmetic OperatorsComparison Operators
Boolean OperatorsCompound Operators
VariablesVariables are expressions that you can use in programs to store values, such as a sensor reading from an analog pin. ConstantsConstants are particular values with specific meanings. Data TypesVariables can have various types, which are described below. ConversionReference |
FunctionsDigital I/O
Analog I/O
Advanced I/O Time
Math
Trigonometry Random Numbers
Communication
Didn't find something? Check the extended reference or the libraries. Or see the list of community-contributed code. |
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.