support json format for tower sensors

Author: matthewwall

bin/user/sdr.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
-# Copyright 2016 Matthew Wall, all rights reserved
+# Copyright 2016 Matthew Wall
+# Distributed under the terms of the GNU Public License (GPLv3)
 """
 Collect data from stl-sdr.  Run rtl_433 on a thread and push the output onto
 a queue.
@@ -83,7 +84,7 @@
 
 
 DRIVER_NAME = 'SDR'
-DRIVER_VERSION = '0.12'
+DRIVER_VERSION = '0.13'
 
 # -q - suppress non-data messages
 # -U - print timestamps in UTC
@@ -286,6 +287,15 @@ def add_identifiers(pkt, sensor_id='', packet_type=''):
 class AcuriteTowerPacket(Packet):
     # 2016-08-30 23:57:20 Acurite tower sensor 0x37FC Ch A: 26.7 C 80.1 F 16 % RH
 
+    # 2017-01-12 02:55:10 : Acurite tower sensor : 12391 : B
+    # Temperature: 18.0 C
+    # Humidity: 68
+    # Battery: 0
+    # : 68
+
+    # {"time" : "2017-01-12 03:43:05", "model" : "Acurite tower sensor", "id" : 521, "channel" : "A", "temperature_C" : 0.800, "humidity" : 68, "battery" : 0, "status" : 68}
+    # {"time" : "2017-01-12 03:43:11", "model" : "Acurite tower sensor", "id" : 5585, "channel" : "C", "temperature_C" : 21.100, "humidity" : 32, "battery" : 0, "status" : 68}
+
     IDENTIFIER = "Acurite tower sensor"
     PATTERN = re.compile('0x([0-9a-fA-F]+) Ch ([A-C]): ([\d.-]+) C ([\d.-]+) F ([\d]+) % RH')
 
@@ -307,6 +317,19 @@ def parse_text(ts, payload, lines):
             loginf("AcuriteTowerPacket: unrecognized data: '%s'" % lines[0])
         return pkt
 
+    @staticmethod
+    def parse_json(obj):
+        pkt = dict()
+        pkt['dateTime'] = Packet.parse_time(obj.get('time'))
+        pkt['usUnits'] = weewx.METRIC
+        hardware_id = "%04x" % obj.get('id', 0)
+        pkt['temperature'] = Packet.get_float(obj, 'temperature_C')
+        pkt['humidity'] = Packet.get_float(obj, 'humidity')
+        pkt['battery'] = 0 if obj.get('battery') == 0 else 1
+        pkt['status'] = obj.get('status')
+        return Packet.add_identifiers(
+            pkt, hardware_id, AcuriteTowerPacket.__name__)
+
 
 class Acurite5n1Packet(Packet):
     # 2016-08-31 16:41:39 Acurite 5n1 sensor 0x0BFA Ch C, Msg 31, Wind 15 kmph / 9.3 mph 270.0^ W (3), rain gauge 0.00 in

changelog

@@ -1,3 +1,6 @@
+0.13 11jan2016
+* deal with changes to acurite decoder in rtl-433 - use json now
+
 0.12 03nov2016
 * added option to enumerate supported sensors
 * added support for OS WGR800 and PCR800 sensors

install.py

@@ -1,5 +1,6 @@
 # installer for the weewx-sdr driver
-# Copyright 2016 Matthew Wall, all rights reserved
+# Copyright 2016 Matthew Wall
+# Distributed under the terms of the GNU Public License (GPLv3)
 
 from setup import ExtensionInstaller
 
@@ -9,7 +10,7 @@ def loader():
 class SDRInstaller(ExtensionInstaller):
     def __init__(self):
         super(SDRInstaller, self).__init__(
-            version="0.12",
+            version="0.13",
             name='sdr',
             description='Capture data from rtl_433',
             author="Matthew Wall",