From bb8e57cf8d2b715d02cc95f8da35f7596cb417ba Mon Sep 17 00:00:00 2001
From: Scott Petersen <scott@nutech.com>
Date: Tue, 28 May 2013 12:28:20 -0700
Subject: [PATCH] Added support for using grep to search for serial devices.

---
 pyad2usb/devices.py | 7 +++++--
 test.py             | 8 +++++++-
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/pyad2usb/devices.py b/pyad2usb/devices.py
index ba8f319..bca46b7 100644
--- a/pyad2usb/devices.py
+++ b/pyad2usb/devices.py
@@ -249,14 +249,17 @@ class SerialDevice(Device):
     BAUDRATE = 19200
 
     @staticmethod
-    def find_all():
+    def find_all(pattern=None):
         """
         Returns all serial ports present.
         """
         devices = []
 
         try:
-            devices = serial.tools.list_ports.comports()
+            if pattern:
+                devices = serial.tools.list_ports.grep(pattern)
+            else:
+                devices = serial.tools.list_ports.comports()
         except Exception, err:
             raise util.CommError('Error enumerating AD2SERIAL devices: {0}'.format(str(err)))
 
diff --git a/test.py b/test.py
index a6af4ee..7523650 100755
--- a/test.py
+++ b/test.py
@@ -226,6 +226,11 @@ def test_no_read_thread():
 
     a2u.close()
 
+def test_serial_grep():
+    re =  pyad2usb.devices.SerialDevice.find_all(pattern='VID:PID=067b:2303')
+    for x in re:
+        print x
+
 try:
     signal.signal(signal.SIGINT, signal_handler)
 
@@ -236,13 +241,14 @@ try:
     #test_usb_serial()
     #test_factory()
     #test_factory_watcher()
-    upload_usb()
+    #upload_usb()
     #upload_usb_serial()
 
     #test_socket()
     #upload_socket()
 
     #test_no_read_thread()
+    test_serial_grep()
 
 except Exception, err:
     traceback.print_exc(err)