From ab589175f3551133fd6e6645a9cb5d845cb9892f Mon Sep 17 00:00:00 2001
From: BTChip github <contact@btchip.com>
Date: Mon, 12 Mar 2018 19:21:16 +0100
Subject: [PATCH] Better interface filter, OSX portability

---
 ledgerblue/comm.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ledgerblue/comm.py b/ledgerblue/comm.py
index 60bc66b..d2ab70c 100644
--- a/ledgerblue/comm.py
+++ b/ledgerblue/comm.py
@@ -190,8 +190,9 @@ def getDongle(debug=False, selectCommand=None):
 	hidDevicePath = None
 	ledger = True
 	for hidDevice in hid.enumerate(0, 0):
-		if hidDevice['vendor_id'] == 0x2c97 and ('interface_number' not in hidDevice or hidDevice['interface_number'] == 0):
-			hidDevicePath = hidDevice['path']
+		if hidDevice['vendor_id'] == 0x2c97:
+			if ('interface_number' in hidDevice and hidDevice['interface_number'] == 0) or ('usage_page' in hidDevice and hidDevice['usage_page'] == 0xffa0):
+				hidDevicePath = hidDevice['path']
 	if hidDevicePath is not None:
 		dev = hid.device()
 		dev.open_path(hidDevicePath)