From b3c5f36e11e74e636613bb6793a6fedd51b6c403 Mon Sep 17 00:00:00 2001
From: bcolsen <bcolsen@gmail.com>
Date: Thu, 11 Apr 2019 11:59:18 -0600
Subject: [PATCH] flag fix

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

diff --git a/galvani/BioLogic.py b/galvani/BioLogic.py
index 3174299..a307f74 100644
--- a/galvani/BioLogic.py
+++ b/galvani/BioLogic.py
@@ -195,8 +195,9 @@ def VMPdata_dtype_from_colIDs(colIDs):
     flags2_dict = OrderedDict()
     for colID in colIDs:
         if colID in (1, 2, 3, 21, 31, 65):
-            type_list.append('u1')
-            field_list.append('flags')
+            if 'flags' not in field_list:
+                type_list.append('u1')
+                field_list.append('flags')
             if colID == 1:
                 flags_dict['mode'] = (np.uint8(0x03), np.uint8)
             elif colID == 2: