raspberry-pi-pico-machine-code-emulator/README.md

Raspberry Pi Pico Machine Code Emulator with compiler for LISP

Recently I was wondering if it is possible to run a program from the pico's ram. That's my answer!

Try it?

• Download the git repository.
• Flash pico.ino with the arduino ide.
• Write a program with my LISP Syntax
• Compile it with: sh build.sh [lisp-file-input] [assembly-file-output] [hex-file-output]
• Copy and Past the Binary in Hex in the Serial Monitor.
• Type start to run your Program.

Syntax in LISP

DataTypes

• uint8
• uint16
• uint32
• int8
• int16
• int32
• float
• bool
• (Strings or chars are currently not supported)

Calculations

(+ a b)   
(+ a b c) ;...

(- a b)
(- a b c) ;...

(* a b)   
(* a b c) ;...

(/ a b)
(/ a b c) ;...

print

(print a)

Comparisons and Branches

(< 4 5)
(> 5 4)
(= 6 6)

(if (< 4 5) (print 1) (print 0))
;if [condition] [then] [else]

Variables

Define Variables:

(defvar myvar1:uint32 4)
(defvar myvar2:float (+ 5 1.5))

Set Variables:

(let myvar1 4)
(let myvar2 (+ 5 1))

Functions

Define and call Functions:

(defun faculty:uint32 (input:uint32)
  (print input)
  (if (< in 2) 1 (* input (faculty (- input 1))))
)
(print (faculty 10))