The same language on a microcontroller

# blink.zeno: the same language on a microcontroller.
#
#     zeno run examples/blink.zeno       run it on the simulated board (stop it with Ctrl-C)
#     zeno build --firmware --no-collector examples/blink.zeno
#                                        compile it to blink.c: three lines of C in a loop
#
# On a computer the board is simulated and prints `led on`, `led off`.
# docs/board.md shows how a real board is put underneath.

from board import led
from time import sleep

while true {
    led.toggle()
    sleep(500 ms)        # units are part of the number, so 500 ms + 3 V is an error
}

led on
led off
led on
led off
led on
led off