From 9eaca8e5464d465329a1ec3559c4ddb8ca105e2c Mon Sep 17 00:00:00 2001
From: David Antliff <david@pitchblende.co.nz>
Date: Tue, 5 Sep 2017 11:19:48 +1200
Subject: [PATCH] Fix CRC.

---
 main/owb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main/owb.c b/main/owb.c
index aa00e98..e1d447a 100644
--- a/main/owb.c
+++ b/main/owb.c
@@ -271,7 +271,7 @@ static uint8_t _calc_crc_block(uint8_t crc, const uint8_t * buffer, size_t len)
     {
         crc8 = _calc_crc(crc8, *buffer++);
     }
-    while (len-- > 0);
+    while (--len > 0);
     return crc8;
 }