[processor-sdk/performance-audio-sr.git] / processor_audio_sdk_1_00_00_00 / tools / pyalpha / pyalpha / serial / tools / list_ports_linux.py
1 #!/usr/bin/env python
2 #
3 # This is a module that gathers a list of serial ports including details on
4 # GNU/Linux systems.
5 #
6 # This file is part of pySerial. https://github.com/pyserial/pyserial
7 # (C) 2011-2015 Chris Liechti <cliechti@gmx.net>
8 #
9 # SPDX-License-Identifier: BSD-3-Clause
11 import glob
12 import os
13 from serial.tools import list_ports_common
16 class SysFS(list_ports_common.ListPortInfo):
17 """Wrapper for easy sysfs access and device info"""
19 def __init__(self, device):
20 super(SysFS, self).__init__(device)
21 self.name = os.path.basename(device)
22 self.usb_device_path = None
23 if os.path.exists('/sys/class/tty/{}/device'.format(self.name)):
24 self.device_path = os.path.realpath('/sys/class/tty/{}/device'.format(self.name))
25 self.subsystem = os.path.basename(os.path.realpath(os.path.join(self.device_path, 'subsystem')))
26 else:
27 self.device_path = None
28 self.subsystem = None
29 # check device type
30 if self.subsystem == 'usb-serial':
31 self.usb_device_path = os.path.dirname(os.path.dirname(self.device_path))
32 elif self.subsystem == 'usb':
33 self.usb_device_path = os.path.dirname(self.device_path)
34 else:
35 self.usb_device_path = None
36 # fill-in info for USB devices
37 if self.usb_device_path is not None:
38 self.vid = int(self.read_line(self.usb_device_path, 'idVendor'), 16)
39 self.pid = int(self.read_line(self.usb_device_path, 'idProduct'), 16)
40 self.serial_number = self.read_line(self.usb_device_path, 'serial')
41 self.location = os.path.basename(self.usb_device_path)
42 self.manufacturer = self.read_line(self.usb_device_path, 'manufacturer')
43 self.product = self.read_line(self.usb_device_path, 'product')
44 self.interface = self.read_line(self.device_path, 'interface')
46 if self.subsystem in ('usb', 'usb-serial'):
47 self.apply_usb_info()
48 #~ elif self.subsystem in ('pnp', 'amba'): # PCI based devices, raspi
49 elif self.subsystem == 'pnp': # PCI based devices
50 self.description = self.name
51 self.hwid = self.read_line(self.device_path, 'id')
52 elif self.subsystem == 'amba': # raspi
53 self.description = self.name
54 self.hwid = os.path.basename(self.device_path)
56 def read_line(self, *args):
57 """\
58 Helper function to read a single line from a file.
59 One or more parameters are allowed, they are joined with os.path.join.
60 Returns None on errors..
61 """
62 try:
63 with open(os.path.join(*args)) as f:
64 line = f.readline().strip()
65 return line
66 except IOError:
67 return None
70 def comports():
71 devices = glob.glob('/dev/ttyS*') # built-in serial ports
72 devices.extend(glob.glob('/dev/ttyUSB*')) # usb-serial with own driver
73 devices.extend(glob.glob('/dev/ttyACM*')) # usb-serial with CDC-ACM profile
74 devices.extend(glob.glob('/dev/ttyAMA*')) # ARM internal port (raspi)
75 devices.extend(glob.glob('/dev/rfcomm*')) # BT serial devices
76 return [info
77 for info in [SysFS(d) for d in devices]
78 if info.subsystem != "platform"] # hide non-present internal serial ports
80 # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
81 # test
82 if __name__ == '__main__':
83 for port, desc, hwid in sorted(comports()):
84 print("{}: {} [{}]".format(port, desc, hwid))