Added a new script to make this a bit more handy "out of the box"

README.md

@@ -6,13 +6,54 @@ connected to a computer with USB.
 
 Out of the box dumps data like:
 
-% python readdata.py 
-Found Dexcom G4 Receiver S/N: SMXXXXXXXX
-Transmitter paired: 6XXXXX
-Battery Status: CHARGING (83%)
-  Record count:
-  - Meter records: 340
-  - CGM records: 3340
-  - CGM commitable records: 3340
-  - Event records: 15
-  - Insertion records: 4
+    % python readdata.py
+    Found Dexcom G4 Receiver S/N: SMXXXXXXXX
+    Transmitter paired: 6XXXXX
+    Battery Status: CHARGING (83%)
+      Record count:
+      - Meter records: 340
+      - CGM records: 3340
+      - CGM commitable records: 3340
+      - Event records: 15
+      - Insertion records: 4
+
+Or like:
+
+    % python dexcom_reader/dexcom_dumper.py  --g5 -n2
+    2016-12-26 15:47:47: CGM BG:133 (FLAT) DO:False
+    2016-12-26 15:52:45: CGM BG:127 (FLAT) DO:False
+    2016-12-26 15:57:44: CGM BG:120 (FLAT) DO:False
+    2016-12-26 16:02:44: CGM BG:116 (45_DOWN) DO:False
+    2016-12-26 16:07:44: CGM BG:112 (45_DOWN) DO:False
+    2016-12-26 16:12:44: CGM BG:113 (FLAT) DO:False
+    2016-12-26 16:17:45: CGM BG:109 (FLAT) DO:False
+    2016-12-26 16:22:51: CGM BG:102 (FLAT) DO:False
+    2016-12-26 16:27:44: CGM BG:92 (45_DOWN) DO:False
+    2016-12-26 16:32:44: CGM BG:86 (45_DOWN) DO:False
+    2016-12-26 16:37:44: CGM BG:75 (45_DOWN) DO:False
+    2016-12-26 16:42:44: CGM BG:63 (SINGLE_DOWN) DO:False
+    2016-12-26 16:47:44: CGM BG:55 (SINGLE_DOWN) DO:False
+    2016-12-26 16:52:44: CGM BG:52 (45_DOWN) DO:False
+    2016-12-26 16:57:44: CGM BG:53 (FLAT) DO:False
+    2016-12-26 17:02:44: CGM BG:60 (FLAT) DO:False
+    2016-12-26 17:07:44: CGM BG:85 (SINGLE_UP) DO:False
+    2016-12-26 17:12:44: CGM BG:107 (DOUBLE_UP) DO:False
+    2016-12-26 17:17:44: CGM BG:121 (DOUBLE_UP) DO:False
+    2016-12-26 17:22:44: CGM BG:131 (DOUBLE_UP) DO:False
+    2016-12-26 17:27:45: CGM BG:144 (SINGLE_UP) DO:False
+    2016-12-26 17:32:44: CGM BG:149 (45_UP) DO:False
+    2016-12-26 17:37:44: CGM BG:153 (45_UP) DO:False
+    2016-12-26 17:42:52: CGM BG:165 (45_UP) DO:False
+    2016-12-26 17:47:55: CGM BG:176 (45_UP) DO:False
+
+See also:
+
+    % python dexcom_reader/dexcom_dumper.py  --help
+    Usage: dexcom_dumper.py [options]
+
+    Options:
+      -h, --help      show this help message and exit
+      --g4            use Dexcom G4 instead of Dexcom G5
+      --g5            use Dexcom G5 instead of Dexcom G4
+      -a, --all       dump all available records
+      -n NUM_RECORDS  number of pages of CGM records to display

dexcom_reader/dexcom_dumper.py

@@ -0,0 +1,44 @@
+import constants
+import readdata
+
+from optparse import OptionParser
+
+G5_IS_DEFAULT = True
+DEFAULT_PAGE_COUNT = 2
+
+parser = OptionParser()
+parser.add_option("--g4", action="store_false", dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G4 instead of Dexcom G5")
+parser.add_option("--g5", action="store_true",  dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G5 instead of Dexcom G4")
+parser.add_option("-a", "--all", action="store_true", dest="dump_everything", default=False, help="dump all available records")
+parser.add_option("-n", type="int", dest="num_records", default=DEFAULT_PAGE_COUNT, help="number of pages of CGM records to display")
+
+(options, args) = parser.parse_args()
+
+def get_dexcom_reader():
+        if options.g5:
+                dd = readdata.DexcomG5.FindDevice()
+                return readdata.DexcomG5(dd)
+        else:
+                dd = readdata.Dexcom.FindDevice()
+                return readdata.Dexcom(dd)
+
+dr = get_dexcom_reader()
+
+if options.dump_everything:
+
+#       record_types = ['METER_DATA', 'INSERTION_TIME', 'USER_EVENT_DATA', 'CAL_SET', 'SENSOR_DATA']
+
+        unparseable = ['FIRMWARE_PARAMETER_DATA', 'RECEIVER_LOG_DATA', 'USER_SETTING_DATA', 'MAX_VALUE']
+        parsed_to_xml = ['MANUFACTURING_DATA', 'PC_SOFTWARE_PARAMETER']
+        skip = unparseable + parsed_to_xml + ['EGV_DATA']
+        record_types = filter(lambda v: not v in skip, constants.RECORD_TYPES)
+
+        for t in record_types:
+                print t + ":"
+                for r in dr.ReadRecords(t):
+                        print r
+
+cgm_records = dr.ReadRecords('EGV_DATA', 0 if options.dump_everything else options.num_records)
+for cr in cgm_records:
+        if not cr.display_only:
+                print cr

dexcom_reader/readdata.py

@@ -303,13 +303,15 @@ def iter_records (self, record_type):
       for record in records:
         yield record
 
-  def ReadRecords(self, record_type):
+  def ReadRecords(self, record_type, n=0):
     records = []
     assert record_type in constants.RECORD_TYPES
     page_range = self.ReadDatabasePageRange(record_type)
     start, end = page_range
     if start != end or not end:
       end += 1
+    if n>0 and end - n > start:
+      start = end - n
     for x in range(start, end):
       records.extend(self.ReadDatabasePage(record_type, x))
     return records
@@ -330,4 +332,18 @@ def GetDevice (port, G5=False):
   return Dexcom(port)
 
 if __name__ == '__main__':
-  Dexcom.LocateAndDownload()
+
+  from optparse import OptionParser
+
+  G5_IS_DEFAULT = False
+
+  parser = OptionParser()
+  parser.add_option("--g4", action="store_false", dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G4 instead of Dexcom G5")
+  parser.add_option("--g5", action="store_true",  dest="g5", default=G5_IS_DEFAULT, help="use Dexcom G5 instead of Dexcom G4")
+
+  (options, args) = parser.parse_args()
+
+  if options.g5:
+    DexcomG5.LocateAndDownload()
+  else:
+    Dexcom.LocateAndDownload()

setup.py

@@ -10,7 +10,7 @@ def readme():
         return f.read()
 
 setup(name='dexcom_reader',
-    version='0.1.9-dev', # http://semver.org/
+    version='0.1.10', # http://semver.org/
     description='Audit, and inspect data from Dexcom G4.',
     long_description=readme(),
     author="Will Nowak",
@@ -35,7 +35,9 @@ def readme():
       'dexcom_reader': ['etc/udev/rules.d/*']
     },
     data_files = [
-      ('/etc/udev/rules.d', ['dexcom_reader/etc/udev/rules.d/80-dexcom.rules'] ),
+      # installing to system locations breaks things for virtualenv based
+      # environments.
+      # ('/etc/udev/rules.d', ['dexcom_reader/etc/udev/rules.d/80-dexcom.rules'] ),
 
     ],
     zip_safe=False,