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Basic.md

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Basic

Basic Basics

  • Variables are all 32-bit integers
  • Case-insensitive
  • Single quote for line comments
  • Up to 14 arithmetic operations per line
  • Compiled to Assembly

Commands

Command Function
GOTO @label Jump to label
INPUT var Input integer from serial
GOSUB @label Jump to subroutine at label
RETURN Return from subroutine
END End program
PRINT var Print variable to serial
PRINT "string" Print string to serial
INC var Increment variable
DEC var Decrement variable
SETLED led, value Set an LED
SETSEVENSEG display, value Set seven segment display
SETGPIO pin, value Set a GPIO pin
SETGPIOMODE pin, value Set a GPIO pin to input or output mode
SETARDUINO pin, value Set an Arduino pin
SETARDUINOMODE pin, value Set Arduino pin to input or output mode
GETLED var, led Load LED value into variable
GETSEVENSEG var, display Load seven segment value into variable
GETGPIO var, pin Load GPIO value into variable
GETGPIOMODE var, pin Load GPIO mode into variable
GETARDUINO var, pin Load Arduino value into variable
GETARDUINOMODE var, pin Load Arduino mode into variable
SEEDRNG seed Seed RNG with value
RANDOM var Load random value into variable
EXITWHILE Exit the current WHILE loop
EXITFOR Exit the current FOR loop
EXITDO Exit the current DO loop

Operators

Operator Function Precedence
| Logical OR 11
&& Logical AND 10
or Bitwise OR 9
xor Bitwise XOR 8
and Bitwise AND 7
== Equality 6
≠ Inequality 6
≥ Greater than or equal 5
≤ Less than or equal 5
> Greater than 5
< Less than 5
<< Arithmetic shift left 4
>> Arithmetic shift right 4
- Subtraction 3
+ Addition 3
* Multiplication 2
/ Division 2
mod Modulo 2
! Logical NOT 1
not Bitwise NOT 1

Variables

Variables are all initialized to zero and no variable declaration is needed. Variable assignments are in the form:

<var> = <expression>

Control Flow

Inline IF statement

if <expression> then <statement>

Inline IF-ELSE statement

if <expression> then <statement> else <statement>

Multi-line IF-ELSEIF-ELSE statement

if <expression> then
	<statements>
elseif <expression> then
	<statements>
else
	<statements>
endif

GOTO

@loop
<statements>
goto @loop

GOSUB

gosub @subroutine
end

@subroutine
<statements>
return

WHILE loop

while <expression>
	<statements>
wend

FOR loop default step

for <var> = <start_val> to <end_val>
	<statements>
next

FOR loop custom step

for <var> = <start_val> to <end_val> step <const_increment>
	<statements>
next

DO-WHILE loop

do
	<statements>
loop while <expression>

DO-UNTIL loop

do
	<statements>
loop until <expression>