Add VantagePro2.RAIN_COLLECTOR_UNITS will have one of the following

pyvantagepro/__init__.py

@@ -13,5 +13,5 @@
 from .logger import LOGGER, active_logger
 from .device import VantagePro2
 
-VERSION = '0.3.3dev'
+VERSION = '0.3.4dev'
 __version__ = VERSION

pyvantagepro/device.py

@@ -63,21 +63,28 @@ class VantagePro2(object):
     ESC = '\x1b'
     OK = '\n\rOK\n\r'
 
-    def __init__(self, link):
+    RAIN_COLLECTOR_UNITS = {
+        0x00: 0.01, # inch
+        0x10: 0.2,  # millimeter
+        0x20: 0.1,  # millimeter
+    }
+
+    def __init__(self, link, rain_collector_unit=0.01):
         self.link = link
         self.link.open()
+        self.rain_collector_unit = rain_collector_unit
         self._check_revision()
 
     @classmethod
-    def from_url(cls, url, timeout=10):
+    def from_url(cls, url, timeout=10, rain_collector_unit=0.01):
         ''' Get device from url.
 
         :param url: A `PyLink` connection URL.
         :param timeout: Set a read timeout value.
         '''
         link = link_from_url(url)
         link.settimeout(timeout)
-        return cls(link)
+        return cls(link, rain_collector_unit)
 
     @classmethod
     def from_serial(cls, tty, baud, timeout=10):
@@ -170,7 +177,7 @@ def get_current_data(self):
         self.send("LOOP 1", self.ACK)
         current_data = self.link.read(99)
         if self.RevB:
-            return LoopDataParserRevB(current_data, datetime.now())
+            return LoopDataParserRevB(current_data, datetime.now(), self.rain_collector_unit)
         else:
             raise NotImplementedError('Do not support RevB data format')
 

pyvantagepro/parser.py

@@ -145,20 +145,20 @@ class LoopDataParserRevB(DataParser):
         ('SunSet', 'H'), ('EOL', '2s'), ('CRC', 'H'),
     )
 
-    def __init__(self, data, dtime):
+    def __init__(self, data, dtime, rain_collector_unit=0.01):
         super(LoopDataParserRevB, self).__init__(data, self.LOOP_FORMAT)
         self['Datetime'] = dtime
         self['Barometer'] = self['Barometer'] / 1000
         self['TempIn'] = self['TempIn'] / 10
         self['TempOut'] = self['TempOut'] / 10
-        self['RainRate'] = self['RainRate'] / 100
-        self['RainStorm'] = self['RainStorm'] / 100
+        self['RainRate'] = self['RainRate'] * rain_collector_unit
+        self['RainStorm'] = self['RainStorm'] * rain_collector_unit
         # Given a packed storm date field, unpack and return date
         self['StormStartDate'] = self.unpack_storm_date()
         # rain totals
-        self['RainDay'] = self['RainDay'] / 100
-        self['RainMonth'] = self['RainMonth'] / 100
-        self['RainYear'] = self['RainYear'] / 100
+        self['RainDay'] = self['RainDay'] * rain_collector_unit
+        self['RainMonth'] = self['RainMonth'] * rain_collector_unit
+        self['RainYear'] = self['RainYear'] * rain_collector_unit
         # evapotranspiration totals
         self['ETDay'] = self['ETDay'] / 1000
         self['ETMonth'] = self['ETMonth'] / 100