mirror of
https://github.com/meshtastic/python.git
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98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
""" Utility functions.
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"""
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import traceback
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from queue import Queue
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import sys
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import time
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import logging
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import threading
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import serial
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import serial.tools.list_ports
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"""Some devices such as a seger jlink we never want to accidentally open"""
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blacklistVids = dict.fromkeys([0x1366])
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def stripnl(s):
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"""remove newlines from a string (and remove extra whitespace)"""
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s = str(s).replace("\n", " ")
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return ' '.join(s.split())
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def fixme(message):
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"""raise an exception for things that needs to be fixed"""
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raise Exception(f"FIXME: {message}")
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def catchAndIgnore(reason, closure):
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"""Call a closure but if it throws an excpetion print it and continue"""
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try:
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closure()
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except BaseException as ex:
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logging.error(f"Exception thrown in {reason}: {ex}")
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def findPorts():
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"""Find all ports that might have meshtastic devices
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Returns:
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list -- a list of device paths
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"""
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l = list(map(lambda port: port.device,
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filter(lambda port: port.vid is not None and port.vid not in blacklistVids,
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serial.tools.list_ports.comports())))
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l.sort()
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return l
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class dotdict(dict):
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"""dot.notation access to dictionary attributes"""
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__getattr__ = dict.get
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__setattr__ = dict.__setitem__
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__delattr__ = dict.__delitem__
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class Timeout:
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"""Timeout class"""
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def __init__(self, maxSecs=20):
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self.expireTime = 0
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self.sleepInterval = 0.1
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self.expireTimeout = maxSecs
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def reset(self):
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"""Restart the waitForSet timer"""
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self.expireTime = time.time() + self.expireTimeout
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def waitForSet(self, target, attrs=()):
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"""Block until the specified attributes are set. Returns True if config has been received."""
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self.reset()
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while time.time() < self.expireTime:
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if all(map(lambda a: getattr(target, a, None), attrs)):
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return True
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time.sleep(self.sleepInterval)
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return False
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class DeferredExecution():
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"""A thread that accepts closures to run, and runs them as they are received"""
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def __init__(self, name=None):
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self.queue = Queue()
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self.thread = threading.Thread(target=self._run, args=(), name=name)
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self.thread.daemon = True
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self.thread.start()
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def queueWork(self, runnable):
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""" Queue up the work"""
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self.queue.put(runnable)
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def _run(self):
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while True:
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try:
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o = self.queue.get()
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o()
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except:
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logging.error(
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f"Unexpected error in deferred execution {sys.exc_info()[0]}")
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print(traceback.format_exc())
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