Fixed problem on MacOS. Added comment in change file

bin/weewx/station.py

@@ -4,21 +4,10 @@
 #    See the file LICENSE.txt for your full rights.
 #
 """Defines (mostly static) information about a station."""
-
 import time
+
 import weeutil.weeutil
 import weewx.units
-import os
-
-# For FreeBSD
-import ctypes
-from ctypes.util import find_library
-
-# For MacOS:
-try:
-    from Quartz.QuartzCore import CACurrentMediaTime
-except ImportError:
-    pass
 
 class StationInfo(object):
     """Readonly class with static station information. It has no formatting information. Just a POS.
@@ -108,25 +97,28 @@ class Station(object):
         # Get the OS uptime. Because this is highly operating system dependent, several
         # different strategies may have to be tried:
         os_uptime_secs = None
-
         try:
             # For Linux:
             os_uptime_secs = float(open("/proc/uptime").read().split()[0])
         except (IOError, KeyError):
             try:
-                #for FreeBSD
-                libc = ctypes.CDLL(find_library('c'))
-                size = ctypes.c_size_t()
-                buf = ctypes.c_int()
-                size.value = ctypes.sizeof(buf)
-                libc.sysctlbyname("kern.boottime", ctypes.byref(buf), ctypes.byref(size), None, 0)
-                os_uptime_secs = time.time() - float(buf.value) 
-            except (IOError, NameError):
-                try:
                 # For MacOs:
-                 os_uptime_secs = CACurrentMediaTime()
-                except NameError:
-                 pass
+                from Quartz.QuartzCore import CACurrentMediaTime
+                os_uptime_secs = CACurrentMediaTime()
+            except ImportError:
+                try:
+                    #for FreeBSD
+                    import ctypes
+                    from ctypes.util import find_library
+    
+                    libc = ctypes.CDLL(find_library('c'))
+                    size = ctypes.c_size_t()
+                    buf = ctypes.c_int()
+                    size.value = ctypes.sizeof(buf)
+                    libc.sysctlbyname("kern.boottime", ctypes.byref(buf), ctypes.byref(size), None, 0)
+                    os_uptime_secs = time.time() - float(buf.value)
+                except (IOError, NameError):
+                    pass
 
         return weewx.units.ValueHelper(value_t=(os_uptime_secs, "second", "group_deltatime"), 
                                         formatter=self.formatter,

docs/changes.txt

@@ -49,6 +49,9 @@ Moved examples out of bin directory.  Eliminated experimental directory.
 Reinforce the use of user directory, eliminate use of examples directory.
 Renamed xsearch.py to stats.py.
 
+OS uptime now works for freeBSD. Thanks to user Bill Richter!
+PR #188.
+
 
 3.6.2 11/08/2016