title: linux-pyserial :could not open port /dev/ttyAMA0 No such file or directory
body: <p>could not open port /dev/ttyAMA0: [Errno 2] No such file or directory: '/dev/ttyAMA0'</p>
  
  <p>I am using cp2102 usb to uart bridge which is installed on linux kernel 3.x.x</p>
  
  <pre><code>&gt;&gt;&gt; import serial
  &gt;&gt;&gt; port = serial.Serial("/dev/ttyAMA0", baudrate=115200, timeout=3.0)
  </code></pre>
  
  <p>it gives the following error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 260, in __init__
      self.open()
    File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 276, in open
      raise SerialException("could not open port %s: %s" % (self._port, msg))
  serial.serialutil.SerialException: could not open port /dev/ttyAMA0: [Errno 2] No such file or directory: '/dev/ttyAMA0'
  </code></pre>