/usr/share/pyshared/pyxid/serial_wrapper.py is in python-pyxid 1.0-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | # -*- coding: utf-8 -*-
from serial import serial_for_url, Serial
from serial.serialutil import SerialException
import os, sys
class SerialPort(object):
def __init__(self, serial_port, baud_rate=115200):
if sys.platform == 'darwin':
self.impl = MacSerialPort(serial_port, baud_rate)
elif sys.platform == 'linux2':
self.impl = LinuxSerialPort(serial_port, baud_rate)
else:
self.impl = GenericSerialPort(serial_port, baud_rate)
def __getattr__(self, attr):
return getattr(self.impl, attr)
@staticmethod
def available_ports():
if sys.platform == 'darwin':
return MacSerialPort.available_ports()
elif sys.platform == 'linux2':
return LinuxSerialPort.available_ports()
else:
return GenericSerialPort.available_ports()
class LinuxSerialPort(object):
"""
USB-serial devices on Linux show up as /dev/ttyUSB?
pySerial expects /dev/tty? (no USB).
"""
def __init__(self, serial_port, baud_rate=115200):
self.serial_port = serial_port
self.serial_port.setBaudrate(baud_rate)
def __getattr__(self, attr):
return getattr(self.serial_port, attr)
@staticmethod
def available_ports():
usb_serial_ports = filter(
(lambda x: x.startswith('ttyUSB')),
os.listdir('/dev'))
ports = []
for p in usb_serial_ports:
ports.append(serial_for_url('/dev/'+p, do_not_open=True))
return ports
class GenericSerialPort(object):
def __init__(self, serial_port, baud_rate=115200):
self.serial_port = serial_port
self.serail_port.setBaudrate(baud_rate)
@staticmethod
def available_ports():
"""
Scans COM1 through COM255 for available serial ports
returns a list of available ports
"""
ports = []
for i in range(256):
try:
p = Serial(i)
p.close()
ports.append(p)
except SerialException:
pass
return ports
def __getattr__(self, attr):
"""
forward calls to the internal serial.Serial instance
"""
return getattr(self.serial_port, attr)
class MacSerialPort(object):
"""
USB-Serial ports on Mac OS show up as /dev/cu.usbserial-*
pySerial expects them to be /dev/cuad*
"""
def __init__(self, serial_port, baud_rate=115200):
self.serial_port = serial_port
self.serial_port.setBaudrate(baud_rate)
@staticmethod
def available_ports():
usb_serial_ports = filter(
(lambda x : x.startswith('cu.usbserial')),
os.listdir('/dev'))
ports = []
for p in usb_serial_ports:
ports.append(serial_for_url('/dev/'+p, do_not_open=True))
return ports
def __getattr__(self, attr):
"""
forward calls to the internal serial.Serial instance
"""
return getattr(self.serial_port, attr)
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