.gitignore

*.hex
*.s
*.elf

README.md

Blink in (Micro)Scheme

You can write programs even for 8-bit microcontrollers in Scheme. Here is very simple one - it just blinks. Try it:

$ guix shell
$ make
$ # avrdude ...

See it blinks...

blink.ms

(define pin-L
  (output 13))

(forever
  (lambda ()
    (toggle pin-L)
    (pause 3000)))

Makefile

blink.elf: blink.ms
	microscheme -va -m UNO blink.ms

.PHONY: clean
clean:
	rm -f blink.{hex,s,elf}

manifest.scm

(use-modules
  (gnu packages avr)
  (gnu packages avr-xyz)
  (gnu packages base)
  (gnu packages flashing-tools)
  (gnu packages llvm)
  (guix profiles)
  (guix packages))

(packages->manifest
  (list
    (package
      (inherit microscheme)
      (inputs
        (modify-inputs
          (package-inputs microscheme)
          (delete clang))))  ; not needed - save bandwidth a bit
    (make-avr-toolchain)
    gnu-make
    avrdude))