pixoPython/helpers.py

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Python
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2020-01-26 23:18:12 +00:00
import os
from machine import Timer
from board import TOTAL_DOTS
def cat(filename, content=False):
"""
Simulation of an OS's `cat`
`filename` is either a full or relative path
to a file to interact with.
When `content` is not provided, the contents
of the file will be printed out. When provided,
`content` is expected to be a string-like value
that will be written to `filename`
"""
mode = 'r'
if content:
mode = 'w'
with open(filename, mode) as file:
if content:
file.write(content)
else:
print(''.join(file.readlines()))
file.close()
def ls(path=''):
"""
Prints out the contents of a directory.
When `path` is defined, it's expected to
be string containing the full or relative
path to a destination
"""
print('ls %s' % path)
print('\n'.join(os.listdir()))
class TimeLoop:
"""
If you have an iterable (such as the BOARD),
you can use this class to run some code
asyncronously; which will still allow interactive
commands on the REPL.
Available methods:
`self.st(callback)` - Starts the timer running
and will run `callback` every self.timer_speed ms
`self.s()` - Completely stops the timer
Arguments at initialization:
`timer_speed` is required, and will determine
how often (in ms) `self.st(callback)` will be
triggered. (You can't call `callback` from `self`)
`timer_id` is optional, and should only be used
when you want to run multiple timers concurrently
"""
def __init__(self, timer_speed, timer_id=-1):
self.timer = Timer(timer_id)
self.timer_speed = timer_speed
def st(self, callback):
self.timer.init(
period=self.timer_speed,
mode=Timer.PERIODIC,
callback=lambda self: callback()
)
def s(self):
self.timer.deinit()