From 4fe5c3b3f767773b8bfcc7f4bdba977a12239f7e Mon Sep 17 00:00:00 2001
From: Guo Wenxue <guowenxue@gmail.com>
Date: Thu, 27 Jun 2019 15:13:52 +0800
Subject: [PATCH] update hal.h to fix turn_led not definition bug

---
 apue/1.File_IO/ds18b20.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/apue/1.File_IO/ds18b20.c b/apue/1.File_IO/ds18b20.c
index 447bf28..efb0025 100644
--- a/apue/1.File_IO/ds18b20.c
+++ b/apue/1.File_IO/ds18b20.c
@@ -116,5 +116,7 @@
     /* convert string value to float value */
     *temp = atof(ptr)/1000;
    
+    close(fd);
+
     return 0;
 }

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