Spin Quick Reference

Terms #

• Expression - Any combination of symbols that can represent a value.

Constants #

Constants are named values that cannot change. They work like integers, but if a value is used often enough, using constants makes your code easier to read and modify.

Constants are declared in CON blocks.

CON
    DOZEN = 12

Variables #

Variables are named values that can change. All variables in Spin consist of integers of different sizes.

name	type	unsigned range	signed range
byte	8-bit integer	0 - 255	-128 - 127
word	16-bit integer	0 - 65,535	-32,768 - 32,767
long	32-bit integer	0 - 4,294,967,295	-2,147,483,648 - 2,147,483,647

Variables are created in a VAR block. They are initialized to zero by the compiler.

VAR
    byte    foo
    word    bar
    long    baz

Flow Control #

Indentation #

If Statements #

Loops #

All loops in Spin use the REPEAT command.

Data #