Module meshtastic.util
Utility functions.
Expand source code
"""Utility functions.
"""
import traceback
from queue import Queue
import os
import re
import sys
import base64
import time
import platform
import logging
import threading
import subprocess
import serial
import serial.tools.list_ports
import pkg_resources
from meshtastic.supported_device import supported_devices
"""Some devices such as a seger jlink we never want to accidentally open"""
blacklistVids = dict.fromkeys([0x1366])
def quoteBooleans(a_string):
"""Quote booleans
given a string that contains ": true", replace with ": 'true'" (or false)
"""
tmp = a_string.replace(": true", ": 'true'")
tmp = tmp.replace(": false", ": 'false'")
return tmp
def genPSK256():
"""Generate a random preshared key"""
return os.urandom(32)
def fromPSK(valstr):
"""A special version of fromStr that assumes the user is trying to set a PSK.
In that case we also allow "none", "default" or "random" (to have python generate one), or simpleN
"""
if valstr == "random":
return genPSK256()
elif valstr == "none":
return bytes([0]) # Use the 'no encryption' PSK
elif valstr == "default":
return bytes([1]) # Use default channel psk
elif valstr.startswith("simple"):
# Use one of the single byte encodings
return bytes([int(valstr[6:]) + 1])
else:
return fromStr(valstr)
def fromStr(valstr):
"""Try to parse as int, float or bool (and fallback to a string as last resort)
Returns: an int, bool, float, str or byte array (for strings of hex digits)
Args:
valstr (string): A user provided string
"""
if len(valstr) == 0: # Treat an emptystring as an empty bytes
val = bytes()
elif valstr.startswith('0x'):
# if needed convert to string with asBytes.decode('utf-8')
val = bytes.fromhex(valstr[2:])
elif valstr.startswith('base64:'):
val = base64.b64decode(valstr[7:])
elif valstr.lower() in {"t", "true", "yes"}:
val = True
elif valstr.lower() in {"f", "false", "no"}:
val = False
else:
try:
val = int(valstr)
except ValueError:
try:
val = float(valstr)
except ValueError:
val = valstr # Not a float or an int, assume string
return val
def pskToString(psk: bytes):
"""Given an array of PSK bytes, decode them into a human readable (but privacy protecting) string"""
if len(psk) == 0:
return "unencrypted"
elif len(psk) == 1:
b = psk[0]
if b == 0:
return "unencrypted"
elif b == 1:
return "default"
else:
return f"simple{b - 1}"
else:
return "secret"
def stripnl(s):
"""Remove newlines from a string (and remove extra whitespace)"""
s = str(s).replace("\n", " ")
return ' '.join(s.split())
def fixme(message):
"""Raise an exception for things that needs to be fixed"""
raise Exception(f"FIXME: {message}")
def catchAndIgnore(reason, closure):
"""Call a closure but if it throws an exception print it and continue"""
try:
closure()
except BaseException as ex:
logging.error(f"Exception thrown in {reason}: {ex}")
def findPorts(eliminate_duplicates=False):
"""Find all ports that might have meshtastic devices
eliminate_duplicates will run the eliminate_duplicate_port() on the collection
Returns:
list -- a list of device paths
"""
l = list(map(lambda port: port.device,
filter(lambda port: port.vid is not None and port.vid not in blacklistVids,
serial.tools.list_ports.comports())))
l.sort()
if eliminate_duplicates:
l = eliminate_duplicate_port(l)
return l
class dotdict(dict):
"""dot.notation access to dictionary attributes"""
__getattr__ = dict.get
__setattr__ = dict.__setitem__
__delattr__ = dict.__delitem__
class Timeout:
"""Timeout class"""
def __init__(self, maxSecs=20):
self.expireTime = 0
self.sleepInterval = 0.1
self.expireTimeout = maxSecs
def reset(self):
"""Restart the waitForSet timer"""
self.expireTime = time.time() + self.expireTimeout
def waitForSet(self, target, attrs=()):
"""Block until the specified attributes are set. Returns True if config has been received."""
self.reset()
while time.time() < self.expireTime:
if all(map(lambda a: getattr(target, a, None), attrs)):
return True
time.sleep(self.sleepInterval)
return False
class DeferredExecution():
"""A thread that accepts closures to run, and runs them as they are received"""
def __init__(self, name=None):
self.queue = Queue()
self.thread = threading.Thread(target=self._run, args=(), name=name)
self.thread.daemon = True
self.thread.start()
def queueWork(self, runnable):
""" Queue up the work"""
self.queue.put(runnable)
def _run(self):
while True:
try:
o = self.queue.get()
o()
except:
logging.error(f"Unexpected error in deferred execution {sys.exc_info()[0]}")
print(traceback.format_exc())
def our_exit(message, return_value = 1):
"""Print the message and return a value.
return_value defaults to 1 (non-successful)
"""
print(message)
sys.exit(return_value)
def support_info():
"""Print out info that helps troubleshooting of the cli."""
print('')
print('If having issues with meshtastic cli or python library')
print('or wish to make feature requests, visit:')
print('https://github.com/meshtastic/Meshtastic-python/issues')
print('When adding an issue, be sure to include the following info:')
print(f' System: {platform.system()}')
print(f' Platform: {platform.platform()}')
print(f' Release: {platform.uname().release}')
print(f' Machine: {platform.uname().machine}')
print(f' Encoding (stdin): {sys.stdin.encoding}')
print(f' Encoding (stdout): {sys.stdout.encoding}')
the_version = pkg_resources.get_distribution("meshtastic").version
print(f' meshtastic: v{the_version}')
print(f' Executable: {sys.argv[0]}')
print(f' Python: {platform.python_version()} {platform.python_implementation()} {platform.python_compiler()}')
print('')
print('Please add the output from the command: meshtastic --info')
def remove_keys_from_dict(keys, adict):
"""Return a dictionary without some keys in it.
Will removed nested keys.
"""
for key in keys:
try:
del adict[key]
except:
pass
for val in adict.values():
if isinstance(val, dict):
remove_keys_from_dict(keys, val)
return adict
def hexstr(barray):
"""Print a string of hex digits"""
return ":".join(f'{x:02x}' for x in barray)
def ipstr(barray):
"""Print a string of ip digits"""
return ".".join(f'{x}' for x in barray)
def readnet_u16(p, offset):
"""Read big endian u16 (network byte order)"""
return p[offset] * 256 + p[offset + 1]
def convert_mac_addr(val):
"""Convert the base 64 encoded value to a mac address
val - base64 encoded value (ex: '/c0gFyhb'))
returns: a string formatted like a mac address (ex: 'fd:cd:20:17:28:5b')
"""
if not re.match("[0-9a-f]{2}([-:]?)[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$", val):
val_as_bytes = base64.b64decode(val)
return hexstr(val_as_bytes)
return val
def snake_to_camel(a_string):
"""convert snake_case to camelCase"""
# split underscore using split
temp = a_string.split('_')
# joining result
result = temp[0] + ''.join(ele.title() for ele in temp[1:])
return result
def camel_to_snake(a_string):
"""convert camelCase to snake_case"""
return ''.join(['_'+i.lower() if i.isupper() else i for i in a_string]).lstrip('_')
def detect_supported_devices():
"""detect supported devices based on vendor id"""
system = platform.system()
#print(f'system:{system}')
possible_devices = set()
if system == "Linux":
# if linux, run lsusb and list ports
# linux: use lsusb
# Bus 001 Device 091: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
_, lsusb_output = subprocess.getstatusoutput('lsusb')
vids = get_unique_vendor_ids()
for vid in vids:
#print(f'looking for {vid}...')
search = f' {vid}:'
#print(f'search:"{search}"')
if re.search(search, lsusb_output, re.MULTILINE):
#print(f'Found vendor id that matches')
devices = get_devices_with_vendor_id(vid)
for device in devices:
possible_devices.add(device)
elif system == "Windows":
# if windows, run Get-PnpDevice
_, sp_output = subprocess.getstatusoutput('powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8;'
'Get-PnpDevice -PresentOnly | Format-List"')
#print(f'sp_output:{sp_output}')
vids = get_unique_vendor_ids()
for vid in vids:
#print(f'looking for {vid.upper()}...')
search = f'DeviceID.*{vid.upper()}&'
#search = f'{vid.upper()}'
#print(f'search:"{search}"')
if re.search(search, sp_output, re.MULTILINE):
#print(f'Found vendor id that matches')
devices = get_devices_with_vendor_id(vid)
for device in devices:
possible_devices.add(device)
elif system == "Darwin":
# run: system_profiler SPUSBDataType
# Note: If in boot mode, the 19003 reports same product ID as 5005.
_, sp_output = subprocess.getstatusoutput('system_profiler SPUSBDataType')
vids = get_unique_vendor_ids()
for vid in vids:
#print(f'looking for {vid}...')
search = f'Vendor ID: 0x{vid}'
#print(f'search:"{search}"')
if re.search(search, sp_output, re.MULTILINE):
#print(f'Found vendor id that matches')
devices = get_devices_with_vendor_id(vid)
for device in devices:
possible_devices.add(device)
return possible_devices
def detect_windows_needs_driver(sd, print_reason=False):
"""detect if Windows user needs to install driver for a supported device"""
need_to_install_driver = False
if sd:
system = platform.system()
#print(f'in detect_windows_needs_driver system:{system}')
if system == "Windows":
# if windows, see if we can find a DeviceId with the vendor id
# Get-PnpDevice | Where-Object{ ($_.DeviceId -like '*10C4*')} | Format-List
command = 'powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8; Get-PnpDevice | Where-Object{ ($_.DeviceId -like '
command += f"'*{sd.usb_vendor_id_in_hex.upper()}*'"
command += ')} | Format-List"'
#print(f'command:{command}')
_, sp_output = subprocess.getstatusoutput(command)
#print(f'sp_output:{sp_output}')
search = f'CM_PROB_FAILED_INSTALL'
#print(f'search:"{search}"')
if re.search(search, sp_output, re.MULTILINE):
need_to_install_driver = True
# if the want to see the reason
if print_reason:
print(sp_output)
return need_to_install_driver
def eliminate_duplicate_port(ports):
"""Sometimes we detect 2 serial ports, but we really only need to use one of the ports.
ports is a list of ports
return a list with a single port to use, if it meets the duplicate port conditions
examples:
Ports: ['/dev/cu.usbserial-1430', '/dev/cu.wchusbserial1430'] => ['/dev/cu.wchusbserial1430']
Ports: ['/dev/cu.usbmodem11301', '/dev/cu.wchusbserial11301'] => ['/dev/cu.wchusbserial11301']
Ports: ['/dev/cu.SLAB_USBtoUART', '/dev/cu.usbserial-0001'] => ['/dev/cu.usbserial-0001']
"""
new_ports = []
if len(ports) != 2:
new_ports = ports
else:
ports.sort()
if 'usbserial' in ports[0] and 'wchusbserial' in ports[1]:
first = ports[0].replace("usbserial-", "")
second = ports[1].replace("wchusbserial", "")
if first == second:
new_ports.append(ports[1])
elif 'usbmodem' in ports[0] and 'wchusbserial' in ports[1]:
first = ports[0].replace("usbmodem", "")
second = ports[1].replace("wchusbserial", "")
if first == second:
new_ports.append(ports[1])
elif 'SLAB_USBtoUART' in ports[0] and 'usbserial' in ports[1]:
new_ports.append(ports[1])
else:
new_ports = ports
return new_ports
def is_windows11():
"""Detect if Windows 11"""
is_win11 = False
if platform.system() == "Windows":
if float(platform.release()) >= 10.0:
patch = platform.version().split('.')[2]
# in case they add some number suffix later, just get first 5 chars of patch
patch = patch[:5]
try:
if int(patch) >= 22000:
is_win11 = True
except Exception as e:
print(f'problem detecting win11 e:{e}')
return is_win11
def get_unique_vendor_ids():
"""Return a set of unique vendor ids"""
vids = set()
for d in supported_devices:
if d.usb_vendor_id_in_hex:
vids.add(d.usb_vendor_id_in_hex)
return vids
def get_devices_with_vendor_id(vid):
"""Return a set of unique devices with the vendor id"""
sd = set()
for d in supported_devices:
if d.usb_vendor_id_in_hex == vid:
sd.add(d)
return sd
def active_ports_on_supported_devices(sds, eliminate_duplicates=False):
"""Return a set of active ports based on the supplied supported devices"""
ports = set()
baseports = set()
system = platform.system()
# figure out what possible base ports there are
for d in sds:
if system == "Linux":
baseports.add(d.baseport_on_linux)
elif system == "Darwin":
baseports.add(d.baseport_on_mac)
elif system == "Windows":
baseports.add(d.baseport_on_windows)
for bp in baseports:
if system == "Linux":
# see if we have any devices (ignoring any stderr output)
command = f'ls -al /dev/{bp}* 2> /dev/null'
#print(f'command:{command}')
_, ls_output = subprocess.getstatusoutput(command)
#print(f'ls_output:{ls_output}')
# if we got output, there are ports
if len(ls_output) > 0:
#print('got output')
# for each line of output
lines = ls_output.split('\n')
#print(f'lines:{lines}')
for line in lines:
parts = line.split(' ')
#print(f'parts:{parts}')
port = parts[-1]
#print(f'port:{port}')
ports.add(port)
elif system == "Darwin":
# see if we have any devices (ignoring any stderr output)
command = f'ls -al /dev/{bp}* 2> /dev/null'
#print(f'command:{command}')
_, ls_output = subprocess.getstatusoutput(command)
#print(f'ls_output:{ls_output}')
# if we got output, there are ports
if len(ls_output) > 0:
#print('got output')
# for each line of output
lines = ls_output.split('\n')
#print(f'lines:{lines}')
for line in lines:
parts = line.split(' ')
#print(f'parts:{parts}')
port = parts[-1]
#print(f'port:{port}')
ports.add(port)
elif system == "Windows":
# for each device in supported devices found
for d in sds:
# find the port(s)
com_ports = detect_windows_port(d)
#print(f'com_ports:{com_ports}')
# add all ports
for com_port in com_ports:
ports.add(com_port)
if eliminate_duplicates:
ports = eliminate_duplicate_port(list(ports))
ports.sort()
ports = set(ports)
return ports
def detect_windows_port(sd):
"""detect if Windows port"""
ports = set()
if sd:
system = platform.system()
if system == "Windows":
command = ('powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8;'
'Get-PnpDevice -PresentOnly | Where-Object{ ($_.DeviceId -like ')
command += f"'*{sd.usb_vendor_id_in_hex.upper()}*'"
command += ')} | Format-List"'
#print(f'command:{command}')
_, sp_output = subprocess.getstatusoutput(command)
#print(f'sp_output:{sp_output}')
p = re.compile(r'\(COM(.*)\)')
for x in p.findall(sp_output):
#print(f'x:{x}')
ports.add(f'COM{x}')
return portsFunctions
def active_ports_on_supported_devices(sds, eliminate_duplicates=False)-
Return a set of active ports based on the supplied supported devices
Expand source code
def active_ports_on_supported_devices(sds, eliminate_duplicates=False): """Return a set of active ports based on the supplied supported devices""" ports = set() baseports = set() system = platform.system() # figure out what possible base ports there are for d in sds: if system == "Linux": baseports.add(d.baseport_on_linux) elif system == "Darwin": baseports.add(d.baseport_on_mac) elif system == "Windows": baseports.add(d.baseport_on_windows) for bp in baseports: if system == "Linux": # see if we have any devices (ignoring any stderr output) command = f'ls -al /dev/{bp}* 2> /dev/null' #print(f'command:{command}') _, ls_output = subprocess.getstatusoutput(command) #print(f'ls_output:{ls_output}') # if we got output, there are ports if len(ls_output) > 0: #print('got output') # for each line of output lines = ls_output.split('\n') #print(f'lines:{lines}') for line in lines: parts = line.split(' ') #print(f'parts:{parts}') port = parts[-1] #print(f'port:{port}') ports.add(port) elif system == "Darwin": # see if we have any devices (ignoring any stderr output) command = f'ls -al /dev/{bp}* 2> /dev/null' #print(f'command:{command}') _, ls_output = subprocess.getstatusoutput(command) #print(f'ls_output:{ls_output}') # if we got output, there are ports if len(ls_output) > 0: #print('got output') # for each line of output lines = ls_output.split('\n') #print(f'lines:{lines}') for line in lines: parts = line.split(' ') #print(f'parts:{parts}') port = parts[-1] #print(f'port:{port}') ports.add(port) elif system == "Windows": # for each device in supported devices found for d in sds: # find the port(s) com_ports = detect_windows_port(d) #print(f'com_ports:{com_ports}') # add all ports for com_port in com_ports: ports.add(com_port) if eliminate_duplicates: ports = eliminate_duplicate_port(list(ports)) ports.sort() ports = set(ports) return ports def camel_to_snake(a_string)-
convert camelCase to snake_case
Expand source code
def camel_to_snake(a_string): """convert camelCase to snake_case""" return ''.join(['_'+i.lower() if i.isupper() else i for i in a_string]).lstrip('_') def catchAndIgnore(reason, closure)-
Call a closure but if it throws an exception print it and continue
Expand source code
def catchAndIgnore(reason, closure): """Call a closure but if it throws an exception print it and continue""" try: closure() except BaseException as ex: logging.error(f"Exception thrown in {reason}: {ex}") def convert_mac_addr(val)-
Convert the base 64 encoded value to a mac address val - base64 encoded value (ex: '/c0gFyhb')) returns: a string formatted like a mac address (ex: 'fd:cd:20:17:28:5b')
Expand source code
def convert_mac_addr(val): """Convert the base 64 encoded value to a mac address val - base64 encoded value (ex: '/c0gFyhb')) returns: a string formatted like a mac address (ex: 'fd:cd:20:17:28:5b') """ if not re.match("[0-9a-f]{2}([-:]?)[0-9a-f]{2}(\\1[0-9a-f]{2}){4}$", val): val_as_bytes = base64.b64decode(val) return hexstr(val_as_bytes) return val def detect_supported_devices()-
detect supported devices based on vendor id
Expand source code
def detect_supported_devices(): """detect supported devices based on vendor id""" system = platform.system() #print(f'system:{system}') possible_devices = set() if system == "Linux": # if linux, run lsusb and list ports # linux: use lsusb # Bus 001 Device 091: ID 10c4:ea60 Silicon Labs CP210x UART Bridge _, lsusb_output = subprocess.getstatusoutput('lsusb') vids = get_unique_vendor_ids() for vid in vids: #print(f'looking for {vid}...') search = f' {vid}:' #print(f'search:"{search}"') if re.search(search, lsusb_output, re.MULTILINE): #print(f'Found vendor id that matches') devices = get_devices_with_vendor_id(vid) for device in devices: possible_devices.add(device) elif system == "Windows": # if windows, run Get-PnpDevice _, sp_output = subprocess.getstatusoutput('powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8;' 'Get-PnpDevice -PresentOnly | Format-List"') #print(f'sp_output:{sp_output}') vids = get_unique_vendor_ids() for vid in vids: #print(f'looking for {vid.upper()}...') search = f'DeviceID.*{vid.upper()}&' #search = f'{vid.upper()}' #print(f'search:"{search}"') if re.search(search, sp_output, re.MULTILINE): #print(f'Found vendor id that matches') devices = get_devices_with_vendor_id(vid) for device in devices: possible_devices.add(device) elif system == "Darwin": # run: system_profiler SPUSBDataType # Note: If in boot mode, the 19003 reports same product ID as 5005. _, sp_output = subprocess.getstatusoutput('system_profiler SPUSBDataType') vids = get_unique_vendor_ids() for vid in vids: #print(f'looking for {vid}...') search = f'Vendor ID: 0x{vid}' #print(f'search:"{search}"') if re.search(search, sp_output, re.MULTILINE): #print(f'Found vendor id that matches') devices = get_devices_with_vendor_id(vid) for device in devices: possible_devices.add(device) return possible_devices def detect_windows_needs_driver(sd, print_reason=False)-
detect if Windows user needs to install driver for a supported device
Expand source code
def detect_windows_needs_driver(sd, print_reason=False): """detect if Windows user needs to install driver for a supported device""" need_to_install_driver = False if sd: system = platform.system() #print(f'in detect_windows_needs_driver system:{system}') if system == "Windows": # if windows, see if we can find a DeviceId with the vendor id # Get-PnpDevice | Where-Object{ ($_.DeviceId -like '*10C4*')} | Format-List command = 'powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8; Get-PnpDevice | Where-Object{ ($_.DeviceId -like ' command += f"'*{sd.usb_vendor_id_in_hex.upper()}*'" command += ')} | Format-List"' #print(f'command:{command}') _, sp_output = subprocess.getstatusoutput(command) #print(f'sp_output:{sp_output}') search = f'CM_PROB_FAILED_INSTALL' #print(f'search:"{search}"') if re.search(search, sp_output, re.MULTILINE): need_to_install_driver = True # if the want to see the reason if print_reason: print(sp_output) return need_to_install_driver def detect_windows_port(sd)-
detect if Windows port
Expand source code
def detect_windows_port(sd): """detect if Windows port""" ports = set() if sd: system = platform.system() if system == "Windows": command = ('powershell.exe "[Console]::OutputEncoding = [Text.UTF8Encoding]::UTF8;' 'Get-PnpDevice -PresentOnly | Where-Object{ ($_.DeviceId -like ') command += f"'*{sd.usb_vendor_id_in_hex.upper()}*'" command += ')} | Format-List"' #print(f'command:{command}') _, sp_output = subprocess.getstatusoutput(command) #print(f'sp_output:{sp_output}') p = re.compile(r'\(COM(.*)\)') for x in p.findall(sp_output): #print(f'x:{x}') ports.add(f'COM{x}') return ports def eliminate_duplicate_port(ports)-
Sometimes we detect 2 serial ports, but we really only need to use one of the ports.
ports is a list of ports return a list with a single port to use, if it meets the duplicate port conditions
examples: Ports: ['/dev/cu.usbserial-1430', '/dev/cu.wchusbserial1430'] => ['/dev/cu.wchusbserial1430'] Ports: ['/dev/cu.usbmodem11301', '/dev/cu.wchusbserial11301'] => ['/dev/cu.wchusbserial11301'] Ports: ['/dev/cu.SLAB_USBtoUART', '/dev/cu.usbserial-0001'] => ['/dev/cu.usbserial-0001']
Expand source code
def eliminate_duplicate_port(ports): """Sometimes we detect 2 serial ports, but we really only need to use one of the ports. ports is a list of ports return a list with a single port to use, if it meets the duplicate port conditions examples: Ports: ['/dev/cu.usbserial-1430', '/dev/cu.wchusbserial1430'] => ['/dev/cu.wchusbserial1430'] Ports: ['/dev/cu.usbmodem11301', '/dev/cu.wchusbserial11301'] => ['/dev/cu.wchusbserial11301'] Ports: ['/dev/cu.SLAB_USBtoUART', '/dev/cu.usbserial-0001'] => ['/dev/cu.usbserial-0001'] """ new_ports = [] if len(ports) != 2: new_ports = ports else: ports.sort() if 'usbserial' in ports[0] and 'wchusbserial' in ports[1]: first = ports[0].replace("usbserial-", "") second = ports[1].replace("wchusbserial", "") if first == second: new_ports.append(ports[1]) elif 'usbmodem' in ports[0] and 'wchusbserial' in ports[1]: first = ports[0].replace("usbmodem", "") second = ports[1].replace("wchusbserial", "") if first == second: new_ports.append(ports[1]) elif 'SLAB_USBtoUART' in ports[0] and 'usbserial' in ports[1]: new_ports.append(ports[1]) else: new_ports = ports return new_ports def findPorts(eliminate_duplicates=False)-
Find all ports that might have meshtastic devices eliminate_duplicates will run the eliminate_duplicate_port() on the collection
Returns
list – a list of device paths
Expand source code
def findPorts(eliminate_duplicates=False): """Find all ports that might have meshtastic devices eliminate_duplicates will run the eliminate_duplicate_port() on the collection Returns: list -- a list of device paths """ l = list(map(lambda port: port.device, filter(lambda port: port.vid is not None and port.vid not in blacklistVids, serial.tools.list_ports.comports()))) l.sort() if eliminate_duplicates: l = eliminate_duplicate_port(l) return l def fixme(message)-
Raise an exception for things that needs to be fixed
Expand source code
def fixme(message): """Raise an exception for things that needs to be fixed""" raise Exception(f"FIXME: {message}") def fromPSK(valstr)-
A special version of fromStr that assumes the user is trying to set a PSK. In that case we also allow "none", "default" or "random" (to have python generate one), or simpleN
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def fromPSK(valstr): """A special version of fromStr that assumes the user is trying to set a PSK. In that case we also allow "none", "default" or "random" (to have python generate one), or simpleN """ if valstr == "random": return genPSK256() elif valstr == "none": return bytes([0]) # Use the 'no encryption' PSK elif valstr == "default": return bytes([1]) # Use default channel psk elif valstr.startswith("simple"): # Use one of the single byte encodings return bytes([int(valstr[6:]) + 1]) else: return fromStr(valstr) def fromStr(valstr)-
Try to parse as int, float or bool (and fallback to a string as last resort)
Returns: an int, bool, float, str or byte array (for strings of hex digits)
Args
valstr:string- A user provided string
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def fromStr(valstr): """Try to parse as int, float or bool (and fallback to a string as last resort) Returns: an int, bool, float, str or byte array (for strings of hex digits) Args: valstr (string): A user provided string """ if len(valstr) == 0: # Treat an emptystring as an empty bytes val = bytes() elif valstr.startswith('0x'): # if needed convert to string with asBytes.decode('utf-8') val = bytes.fromhex(valstr[2:]) elif valstr.startswith('base64:'): val = base64.b64decode(valstr[7:]) elif valstr.lower() in {"t", "true", "yes"}: val = True elif valstr.lower() in {"f", "false", "no"}: val = False else: try: val = int(valstr) except ValueError: try: val = float(valstr) except ValueError: val = valstr # Not a float or an int, assume string return val def genPSK256()-
Generate a random preshared key
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def genPSK256(): """Generate a random preshared key""" return os.urandom(32) def get_devices_with_vendor_id(vid)-
Return a set of unique devices with the vendor id
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def get_devices_with_vendor_id(vid): """Return a set of unique devices with the vendor id""" sd = set() for d in supported_devices: if d.usb_vendor_id_in_hex == vid: sd.add(d) return sd def get_unique_vendor_ids()-
Return a set of unique vendor ids
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def get_unique_vendor_ids(): """Return a set of unique vendor ids""" vids = set() for d in supported_devices: if d.usb_vendor_id_in_hex: vids.add(d.usb_vendor_id_in_hex) return vids def hexstr(barray)-
Print a string of hex digits
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def hexstr(barray): """Print a string of hex digits""" return ":".join(f'{x:02x}' for x in barray) def ipstr(barray)-
Print a string of ip digits
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def ipstr(barray): """Print a string of ip digits""" return ".".join(f'{x}' for x in barray) def is_windows11()-
Detect if Windows 11
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def is_windows11(): """Detect if Windows 11""" is_win11 = False if platform.system() == "Windows": if float(platform.release()) >= 10.0: patch = platform.version().split('.')[2] # in case they add some number suffix later, just get first 5 chars of patch patch = patch[:5] try: if int(patch) >= 22000: is_win11 = True except Exception as e: print(f'problem detecting win11 e:{e}') return is_win11 def our_exit(message, return_value=1)-
Print the message and return a value. return_value defaults to 1 (non-successful)
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def our_exit(message, return_value = 1): """Print the message and return a value. return_value defaults to 1 (non-successful) """ print(message) sys.exit(return_value) def pskToString(psk: bytes)-
Given an array of PSK bytes, decode them into a human readable (but privacy protecting) string
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def pskToString(psk: bytes): """Given an array of PSK bytes, decode them into a human readable (but privacy protecting) string""" if len(psk) == 0: return "unencrypted" elif len(psk) == 1: b = psk[0] if b == 0: return "unencrypted" elif b == 1: return "default" else: return f"simple{b - 1}" else: return "secret" def quoteBooleans(a_string)-
Quote booleans given a string that contains ": true", replace with ": 'true'" (or false)
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def quoteBooleans(a_string): """Quote booleans given a string that contains ": true", replace with ": 'true'" (or false) """ tmp = a_string.replace(": true", ": 'true'") tmp = tmp.replace(": false", ": 'false'") return tmp def readnet_u16(p, offset)-
Read big endian u16 (network byte order)
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def readnet_u16(p, offset): """Read big endian u16 (network byte order)""" return p[offset] * 256 + p[offset + 1] def remove_keys_from_dict(keys, adict)-
Return a dictionary without some keys in it. Will removed nested keys.
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def remove_keys_from_dict(keys, adict): """Return a dictionary without some keys in it. Will removed nested keys. """ for key in keys: try: del adict[key] except: pass for val in adict.values(): if isinstance(val, dict): remove_keys_from_dict(keys, val) return adict def snake_to_camel(a_string)-
convert snake_case to camelCase
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def snake_to_camel(a_string): """convert snake_case to camelCase""" # split underscore using split temp = a_string.split('_') # joining result result = temp[0] + ''.join(ele.title() for ele in temp[1:]) return result def stripnl(s)-
Remove newlines from a string (and remove extra whitespace)
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def stripnl(s): """Remove newlines from a string (and remove extra whitespace)""" s = str(s).replace("\n", " ") return ' '.join(s.split()) def support_info()-
Print out info that helps troubleshooting of the cli.
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def support_info(): """Print out info that helps troubleshooting of the cli.""" print('') print('If having issues with meshtastic cli or python library') print('or wish to make feature requests, visit:') print('https://github.com/meshtastic/Meshtastic-python/issues') print('When adding an issue, be sure to include the following info:') print(f' System: {platform.system()}') print(f' Platform: {platform.platform()}') print(f' Release: {platform.uname().release}') print(f' Machine: {platform.uname().machine}') print(f' Encoding (stdin): {sys.stdin.encoding}') print(f' Encoding (stdout): {sys.stdout.encoding}') the_version = pkg_resources.get_distribution("meshtastic").version print(f' meshtastic: v{the_version}') print(f' Executable: {sys.argv[0]}') print(f' Python: {platform.python_version()} {platform.python_implementation()} {platform.python_compiler()}') print('') print('Please add the output from the command: meshtastic --info')
Classes
class DeferredExecution (name=None)-
A thread that accepts closures to run, and runs them as they are received
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class DeferredExecution(): """A thread that accepts closures to run, and runs them as they are received""" def __init__(self, name=None): self.queue = Queue() self.thread = threading.Thread(target=self._run, args=(), name=name) self.thread.daemon = True self.thread.start() def queueWork(self, runnable): """ Queue up the work""" self.queue.put(runnable) def _run(self): while True: try: o = self.queue.get() o() except: logging.error(f"Unexpected error in deferred execution {sys.exc_info()[0]}") print(traceback.format_exc())Methods
def queueWork(self, runnable)-
Queue up the work
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def queueWork(self, runnable): """ Queue up the work""" self.queue.put(runnable)
class Timeout (maxSecs=20)-
Timeout class
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class Timeout: """Timeout class""" def __init__(self, maxSecs=20): self.expireTime = 0 self.sleepInterval = 0.1 self.expireTimeout = maxSecs def reset(self): """Restart the waitForSet timer""" self.expireTime = time.time() + self.expireTimeout def waitForSet(self, target, attrs=()): """Block until the specified attributes are set. Returns True if config has been received.""" self.reset() while time.time() < self.expireTime: if all(map(lambda a: getattr(target, a, None), attrs)): return True time.sleep(self.sleepInterval) return FalseMethods
def reset(self)-
Restart the waitForSet timer
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def reset(self): """Restart the waitForSet timer""" self.expireTime = time.time() + self.expireTimeout def waitForSet(self, target, attrs=())-
Block until the specified attributes are set. Returns True if config has been received.
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def waitForSet(self, target, attrs=()): """Block until the specified attributes are set. Returns True if config has been received.""" self.reset() while time.time() < self.expireTime: if all(map(lambda a: getattr(target, a, None), attrs)): return True time.sleep(self.sleepInterval) return False
class dotdict (*args, **kwargs)-
dot.notation access to dictionary attributes
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class dotdict(dict): """dot.notation access to dictionary attributes""" __getattr__ = dict.get __setattr__ = dict.__setitem__ __delattr__ = dict.__delitem__Ancestors
- builtins.dict