Identify USB device and discover its name and port

Posted on October 17, 2015 at June 27, 2016 by Elijah

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Download latest PyUSB from :

http://sourceforge.net/projects/pyusb/files/PyUSB%201.0/1.0.0-beta-2/pyusb-1.0.0b2.tar.gz/download

Place file “pyusb-1.0.0b2.tar.gz” on your desktop

gunzip <pyusb-1.0.0b2.tar.gz |tar xvfp - cd pyusb-1.0.0b2 sudo ./setup.py install

Make a new python script with the following code — don’t forget your #! line

<span class="kwd">import</span><span class="pln"> usb
busses </span><span class="pun">=</span><span class="pln"> usb</span><span class="pun">.</span><span class="pln">busses</span><span class="pun">()</span>
<span class="kwd">for</span><span class="pln"> bus </span><span class="kwd">in</span><span class="pln"> busses</span><span class="pun">:</span><span class="pln">
    devices </span><span class="pun">=</span><span class="pln"> bus</span><span class="pun">.</span><span class="pln">devices
    </span><span class="kwd">for</span><span class="pln"> devi </span><span class="kwd">in</span><span class="pln"> devices</span><span class="pun">:</span>
        <span class="kwd">print</span> <span class="str">"Device:"</span><span class="pun">,</span><span class="pln"> devi</span><span class="pun">.</span><span class="pln">filename
        </span><span class="kwd">print_internals(devi)</span><span class="pun">

def</span><span class="pln"> print_internals</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">):</span>
    <span class="kwd">for</span><span class="pln"> attrib </span><span class="kwd">in</span><span class="pln"> dir</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">):</span>
        <span class="kwd">if</span> <span class="kwd">not</span><span class="pln"> attrib</span><span class="pun">.</span><span class="pln">startswith</span><span class="pun">(</span><span class="str">'_'</span><span class="pun">)</span> <span class="kwd">and</span> <span class="kwd">not</span><span class="pln"> attrib </span><span class="pun">==</span> <span class="str">'configurations'</span><span class="pun">:</span><span class="pln">
            x</span><span class="pun">=</span><span class="pln">getattr</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">,</span><span class="pln"> attrib</span><span class="pun">)</span>
            <span class="kwd">print</span> <span class="str">"  "</span><span class="pun">,</span><span class="pln"> attrib</span><span class="pun">,</span><span class="pln"> x
    </span><span class="kwd">for</span><span class="pln"> config </span><span class="kwd">in</span><span class="pln"> dev</span><span class="pun">.</span><span class="pln">configurations</span><span class="pun">:</span>
        <span class="kwd">for</span><span class="pln"> attrib </span><span class="kwd">in</span><span class="pln"> dir</span><span class="pun">(</span><span class="pln">config</span><span class="pun">):</span>
            <span class="kwd">if</span> <span class="kwd">not</span><span class="pln"> attrib</span><span class="pun">.</span><span class="pln">startswith</span><span class="pun">(</span><span class="str">'_'</span><span class="pun">):</span><span class="pln">
                x</span><span class="pun">=</span><span class="pln">getattr</span><span class="pun">(</span><span class="pln">config</span><span class="pun">,</span><span class="pln"> attrib</span><span class="pun">)</span>
              </code><code><span class="pun"> 






</span>

import usb

busses = usb.busses()

for bus in busses:

devices = bus.devices

for devi in devices:

print "Device:", devi.filename

print_internals(devi)

def print_internals(dev):

for attrib in dir(dev):

if not attrib.startswith('_') and not attrib == 'configurations':

x=getattr(dev, attrib)

print " ", attrib, x

for config in dev.configurations:

for attrib in dir(config):

x=getattr(config, attrib)

</code><code>

<span class="kwd">import</span><span class="pln"> usb</span><span class="pln">
busses </span><span class="pun">=</span><span class="pln"> usb</span><span class="pun">.</span><span class="pln">busses</span><span class="pun">()</span>
<span class="kwd">for</span><span class="pln"> bus </span><span class="kwd">in</span><span class="pln"> busses</span><span class="pun">:</span><span class="pln">
  devices </span><span class="pun">=</span><span class="pln"> bus</span><span class="pun">.</span><span class="pln">devices
  </span><span class="kwd">for</span><span class="pln"> dev </span><span class="kwd">in</span><span class="pln"> devices</span><span class="pun">:</span><span class="pln">
    _name </span><span class="pun">=</span><span class="pln"> usb</span><span class="pun">.</span><span class="pln">util</span><span class="pun">.</span><span class="pln">get_string</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">dev</span><span class="pun">,</span><span class="lit">256</span><span class="pun">,2</span><span class="pun">)</span> 
    <span class="kwd">print</span> <span class="str">"device name="</span><span class="pun">,</span><span class="pln">_name
    </span><span class="kwd">print</span> <span class="str">"Device:"</span><span class="pun">,</span><span class="pln"> dev</span><span class="pun">.</span><span class="pln">filename
    </span><span class="kwd">print</span> <span class="str">"  Device class:"</span><span class="pun">,</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">deviceClass
    </span><span class="kwd">print</span> <span class="str">"  Device sub class:"</span><span class="pun">,</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">deviceSubClass
    </span><span class="kwd">print</span> <span class="str">"  Device protocol:"</span><span class="pun">,</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">deviceProtocol
    </span><span class="kwd">print</span> <span class="str">"  Max packet size:"</span><span class="pun">,</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">maxPacketSize
    </span><span class="kwd">print</span> <span class="str">"  idVendor:"</span><span class="pun">,</span><span class="pln">hex</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">idVendor</span><span class="pun">)</span>
    <span class="kwd">print</span> <span class="str">"  idProduct:"</span><span class="pun">,</span><span class="pln">hex</span><span class="pun">(</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">idProduct</span><span class="pun">)</span>
    <span class="kwd">print</span> <span class="str">"  Device Version:"</span><span class="pun">,</span><span class="pln">dev</span><span class="pun">.</span><span class="pln">deviceVersion
    </span><span class="kwd">for</span><span class="pln"> config </span><span class="kwd">in</span><span class="pln"> dev</span><span class="pun">.</span><span class="pln">configurations</span><span class="pun">:</span>
      <span class="kwd">print</span> <span class="str">"  Configuration:"</span><span class="pun">,</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">value
      </span><span class="kwd">print</span> <span class="str">"    Total length:"</span><span class="pun">,</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">totalLength 
      </span><span class="kwd">print</span> <span class="str">"    selfPowered:"</span><span class="pun">,</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">selfPowered
      </span><span class="kwd">print</span> <span class="str">"    remoteWakeup:"</span><span class="pun">,</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">remoteWakeup
      </span><span class="kwd">print</span> <span class="str">"    maxPower:"</span><span class="pun">,</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">maxPower
      </span><span class="kwd">for</span><span class="pln"> intf </span><span class="kwd">in</span><span class="pln"> config</span><span class="pun">.</span><span class="pln">interfaces</span><span class="pun">:</span>
        <span class="kwd">print</span> <span class="str">"    Interface:"</span><span class="pun">,</span><span class="pln">intf</span><span class="pun">[</span><span class="lit">0</span><span class="pun">].</span><span class="pln">interfaceNumber
        </span><span class="kwd">for</span><span class="pln"> alt </span><span class="kwd">in</span><span class="pln"> intf</span><span class="pun">:</span>
          <span class="kwd">print</span> <span class="str">"    Alternate Setting:"</span><span class="pun">,</span><span class="pln">alt</span><span class="pun">.</span><span class="pln">alternateSetting
          </span><span class="kwd">print</span> <span class="str">"      Interface class:"</span><span class="pun">,</span><span class="pln">alt</span><span class="pun">.</span><span class="pln">interfaceClass
          </span><span class="kwd">print</span> <span class="str">"      Interface sub class:"</span><span class="pun">,</span><span class="pln">alt</span><span class="pun">.</span><span class="pln">interfaceSubClass
          </span><span class="kwd">print</span> <span class="str">"      Interface protocol:"</span><span class="pun">,</span><span class="pln">alt</span><span class="pun">.</span><span class="pln">interfaceProtocol
          </span><span class="kwd">for</span><span class="pln"> ep </span><span class="kwd">in</span><span class="pln"> alt</span><span class="pun">.</span><span class="pln">endpoints</span><span class="pun">:</span>
            <span class="kwd">print</span> <span class="str">"      Endpoint:"</span><span class="pun">,</span><span class="pln">hex</span><span class="pun">(</span><span class="pln">ep</span><span class="pun">.</span><span class="pln">address</span><span class="pun">)</span>
            <span class="kwd">print</span> <span class="str">"        Type:"</span><span class="pun">,</span><span class="pln">ep</span><span class="pun">.</span><span class="pln">type
            </span><span class="kwd">print</span> <span class="str">"        Max packet size:"</span><span class="pun">,</span><span class="pln">ep</span><span class="pun">.</span><span class="pln">maxPacketSize
            </span><span class="kwd">print</span> <span class="str">"        Interval:"</span><span class="pun">,</span><span class="pln">ep</span><span class="pun">.</span><span class="pln">interval</span>

import usb

busses = usb.busses()

for bus in busses:

devices = bus.devices

for dev in devices:

_name = usb.util.get_string(dev.dev,256,2)

print "device name=",_name

print "Device:", dev.filename

print " Device class:",dev.deviceClass

print " Device sub class:",dev.deviceSubClass

print " Device protocol:",dev.deviceProtocol

print " Max packet size:",dev.maxPacketSize

print " idVendor:",hex(dev.idVendor)

print " idProduct:",hex(dev.idProduct)

print " Device Version:",dev.deviceVersion

print " Configuration:", config.value

print " Total length:", config.totalLength

print " selfPowered:", config.selfPowered

print " remoteWakeup:", config.remoteWakeup

print " maxPower:", config.maxPower

for intf in config.interfaces:

print " Interface:",intf[0].interfaceNumber

for alt in intf:

print " Alternate Setting:",alt.alternateSetting

print " Interface class:",alt.interfaceClass

print " Interface sub class:",alt.interfaceSubClass

print " Interface protocol:",alt.interfaceProtocol

for ep in alt.endpoints:

print " Endpoint:",hex(ep.address)

print " Type:",ep.type

print " Max packet size:",ep.maxPacketSize

print " Interval:",ep.interval

Save the file, change permissions and run.

We now know the name of our USB device and we can write an if/then line in our script to give the usb port location (filename) to our Hex/Serial code in order to speak with our Satellite USB device.