From 39da4e94377ecb99b5fc5f9ff99f01e79d9b39ee Mon Sep 17 00:00:00 2001
From: Scott Petersen <scott@nutech.com>
Date: Thu, 6 Jun 2013 11:03:11 -0700
Subject: [PATCH] Clearing buffers on error.

---
 pyad2usb/devices.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pyad2usb/devices.py b/pyad2usb/devices.py
index 26e8cbc..88d89b6 100644
--- a/pyad2usb/devices.py
+++ b/pyad2usb/devices.py
@@ -240,6 +240,9 @@ class USBDevice(Device):
                 time.sleep(0.001)
 
         except (usb.core.USBError, FtdiError), err:
+            self._buffer = ''
+            timer.cancel()
+
             raise util.CommError('Error reading from AD2USB device: {0}'.format(str(err)))
         else:
             if got_line:
@@ -428,6 +431,7 @@ class SerialDevice(Device):
                 time.sleep(0.001)
 
         except (OSError, serial.SerialException), err:
+            self._buffer = ''
             timer.cancel()
 
             raise util.CommError('Error reading from AD2SERIAL device: {0}'.format(str(err)))
@@ -591,6 +595,9 @@ class SocketDevice(Device):
                 time.sleep(0.001)
 
         except socket.error, err:
+            self._buffer = ''
+            timer.cancel()
+
             raise util.CommError('Error reading from Socket device: {0}'.format(str(err)))
         else:
             if got_line: