2022-05-15 21:59:59 +02:00
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# Raspberry Pi Pico Machine Code Emulator with compiler for LISP
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2022-05-15 22:32:35 +02:00
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Recently I was wondering if it is possible to run a program from the pico's ram. That's my answer!
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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## Try it?
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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- Download the git repository.
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- Flash pico.ino with the arduino ide.
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- Write a program with my LISP Syntax
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- Compile it with: sh build.sh [lisp-file-input] [assembly-file-output] [hex-file-output]
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2022-05-15 22:42:12 +02:00
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- Copy and Past the Binary in Hex in the Serial Monitor.
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- Type start to run your Program.
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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## Syntax in LISP
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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### DataTypes
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2022-05-15 21:59:59 +02:00
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- uint8
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- uint16
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- uint32
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- int8
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- int16
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- int32
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- float
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- bool
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2022-05-15 22:34:54 +02:00
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- (Strings or chars are currently not supported)
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:33:38 +02:00
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### Calculations
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2022-05-15 22:32:35 +02:00
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```lisp
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(+ a b)
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(+ a b c) ;...
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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(- a b)
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(- a b c) ;...
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2022-05-15 21:59:59 +02:00
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(* a b)
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(* a b c) ;...
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2022-05-15 21:59:59 +02:00
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(/ a b)
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(/ a b c) ;...
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```
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### print
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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```lisp
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(print a)
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```
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:33:38 +02:00
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### Comparisons and Branches
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2022-05-15 22:32:35 +02:00
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```lisp
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(< 4 5)
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(> 5 4)
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(= 6 6)
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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(if (< 4 5) (print 1) (print 0))
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;if [condition] [then] [else]
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```
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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### Variables
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Define Variables:
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```lisp
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(defvar myvar1:uint32 4)
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(defvar myvar2:float (+ 5 1.5))
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```
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Set Variables:
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```lisp
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(let myvar1 4)
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(let myvar2 (+ 5 1))
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```
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:33:38 +02:00
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### Functions
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Define and call Functions:
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2022-05-15 21:59:59 +02:00
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2022-05-15 22:32:35 +02:00
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```lisp
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(defun faculty:uint32 (input:uint32)
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(print input)
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(if (< in 2) 1 (* input (faculty (- input 1))))
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)
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(print (faculty 10))
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```
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