From 58dbe4d2a0ea42805dcf914859b6abf47b51c566 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diego=20Elio=20Petten=C3=B2?= <flameeyes@flameeyes.eu>
Date: Wed, 13 Sep 2017 14:21:51 +0100
Subject: otverio2015: fix readings on Select Plus readers (Issue #22).

The reading value is only 16-bit long, not 32-bit. The following byte is a
meal indicator (not implemented in Verio), followed by a (likely) constant
0x00.
---
 glucometerutils/drivers/otverio2015.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/glucometerutils/drivers/otverio2015.py b/glucometerutils/drivers/otverio2015.py
index deeac4b..632192f 100644
--- a/glucometerutils/drivers/otverio2015.py
+++ b/glucometerutils/drivers/otverio2015.py
@@ -53,7 +53,7 @@ _STRUCT_CHECKSUM = _STRUCT_UINT16
 _STRUCT_TIMESTAMP = _STRUCT_UINT32
 _STRUCT_RECORDID = _STRUCT_UINT16
 _STRUCT_READING = _STRUCT_UINT32
-_STRUCT_RECORD = struct.Struct('<BBHBHIIBBB')
+_STRUCT_RECORD = struct.Struct('<BBHBHIHBBBBB')
 
 _QUERY_REQUEST = b'\x04\xe6\x02'
 _QUERY_KEY_SERIAL = b'\x00'
@@ -253,8 +253,9 @@ class Device(object):
           response[0], response[1]))
 
     (unused_const1, unused_const2, unused_counter, unused_const3,
-     unused_counter2, timestamp, value, unused_flags, unused_const4,
-     unused_const5) = _STRUCT_RECORD.unpack(response)
+     unused_counter2, timestamp, value, unused_meal, unused_const4,
+     unused_flags, unused_const5, unused_const6) = _STRUCT_RECORD.unpack(
+       response)
 
     return common.Reading(_convert_timestamp(timestamp), float(value))
 
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