forked from ToninoTarsi/swpi
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsensor_vantage_pro2.py
459 lines (355 loc) · 17.8 KB
/
sensor_vantage_pro2.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
###########################################################################
# Sint Wind PI
# Copyright 2012 by Tonino Tarsi <[email protected]>
# Comunication based on WFrog
# Please refer to the LICENSE file for conditions
# Visit http://www.vololiberomontecucco.it
#
##########################################################################
"""This module defines the base sensors wh1080 ."""
import threading
import time
import config
import random
import datetime
import sqlite3
from TTLib import *
import sys
import subprocess
import globalvars
import meteodata
import sensor_thread
import sensor
import logging
import WeatherStation
import units
import array
import struct
logFile = datetime.datetime.now().strftime("log/davis_%d%m%Y.log")
logging.basicConfig(filename=logFile,filemode='wa',level=logging.DEBUG)
# logging.basicConfig(format='%(asctime)s %(message)s', datefmt='%d/%m/%Y %I:%M:%S %p')
def get_wind_dir_text():
return [ 'N','NNE','NE','ENE','E','ESE','SE','SSE','S','SSW','SW','WSW','W','WNW','NW','NNW' ]
class Sensor_VantagePro2(sensor.Sensor):
#port='/dev/ttyUSB0'
baud=19200
loops=25
rain_bucket = 'eu'
pressure_cal = 0
logger = logging.getLogger('station.vantagepro')
name = 'Davis VantagePro'
# device reply commands
WAKE_ACK = '\n\r'
ACK = '\x06'
ESC = '\x1b'
OK = '\n\rOK\n\r'
def __init__(self,cfg ):
sensor.Sensor.__init__(self,cfg )
self.port = cfg.sensor_serial_port
def Detect(self):
return True,"","",""
def GetData(self):
import serial
_LoopStruct = LoopStruct(self.rain_bucket)
assert self.rain_bucket in ['eu', 'us']
assert self.baud in [19200, 9600, 4800, 2400, 1200]
while True:
seconds = datetime.datetime.now().second
if ( seconds < 30 ):
time.sleep(30-seconds)
else:
time.sleep(90-seconds)
self._port = serial.Serial(self.port, self.baud, timeout=10)
try:
bad_CRC = 0
self._wakeup()
self._cmd( 'LOOP', self.loops)
for x in xrange(self.loops):
raw = self._port.read( _LoopStruct.size ) # read data
self.logger.debug('read: ' + raw.encode('hex'))
crc_ok = VProCRC.verify( raw )
if crc_ok:
bad_CRC = 0
self.logger.debug("CRC OK")
fields = _LoopStruct.unpack(raw)
# print fields
globalvars.meteo_data.status = 0
globalvars.meteo_data.last_measure_time = datetime.datetime.now()
globalvars.meteo_data.idx = datetime.datetime.now()
globalvars.meteo_data.abs_pressure = fields['Pressure'] + self.pressure_cal
globalvars.meteo_data.temp_in = fields['TempIn']
globalvars.meteo_data.hum_in = fields['HumIn']
globalvars.meteo_data.temp_out = fields['TempOut']
globalvars.meteo_data.hum_out = fields['HumOut']
globalvars.meteo_data.rain = fields['RainRate']
globalvars.meteo_data.rain_rate_24h = fields['RainDay']
globalvars.meteo_data.wind_dir = fields['WindDir']
globalvars.meteo_data.RainStorm = fields['RainStorm']
globalvars.meteo_data.RainMonth = fields['RainMonth']
globalvars.meteo_data.RainYear = fields['RainYear']
globalvars.meteo_data.StormStartDate = fields['StormStartDate']
globalvars.meteo_data.BatteryVolts = fields['BatteryVolts']
globalvars.meteo_data.wind_gust = float(fields['WindSpeed']) *self.cfg.windspeed_gain + self.cfg.windspeed_offset
globalvars.meteo_data.wind_ave = float(fields['WindSpeed10Min']) *self.cfg.windspeed_gain + self.cfg.windspeed_offset
wind_dir = fields['WindDir']
val=int((wind_dir/22.5)+0.5)
globalvars.meteo_data.wind_dir_code = get_wind_dir_text()[val]
#log_txt += "Wind:%.3fm/s %d " % (fields['WindSpeed'], fields['WindDir'])
# UV sensor
if fields['UV'] is not None:
globalvars.meteo_data.uv = fields['UV']
# Solar radiation sensor
if fields['SolarRad'] is not None:
globalvars.meteo_data.illuminance = fields['SolarRad']
globalvars.meteo_data.CalcStatistics()
globalvars.meteo_data.LogDataToDB()
else:
self.logger.info("CRC Bad")
bad_CRC += 1
# Two consecutive CRC errors => exception & abort LOOP command
if bad_CRC > 1:
raise Exception("CRC error")
time.sleep(2)
except Exception, e:
self.logger.error(e)
time.sleep(self.loops * 2)
finally:
self._port.close()
self._port = None
def _wakeup(self):
'''
issue wakeup command to device to take out of standby mode.
'''
self.logger.debug("send: WAKEUP")
for i in xrange(3):
self._port.write('\n') # wakeup device
ack = self._port.read(len(self.WAKE_ACK)) # read wakeup string
self.logger.debug('read: ' + ack.encode('hex'))
if ack == self.WAKE_ACK:
return
raise Exception('Cannot access weather station (WAKEUP)')
def _cmd(self,cmd,*args,**kw):
'''
write a single command, with variable number of arguments. after the
command, the device must return ACK
'''
ok = kw.setdefault('ok',False)
if args:
cmd = "%s %s" % (cmd, ' '.join(str(a) for a in args))
self.logger.debug('send: ' + cmd)
for i in xrange(3):
self._port.write( cmd + '\n')
if ok:
ack = self._port.read(len(self.OK)) # read OK
self.logger.debug('read: ' + ack.encode('hex'))
if ack == self.OK:
return
else:
ack = self._port.read(len(self.ACK)) # read ACK
self.logger.debug('read: ' + ack.encode('hex'))
if ack == self.ACK:
return
raise Exception('Cannot access weather station (%s)' % cmd)
# --------------------------------------------------------------------------- #
class NoDeviceException(Exception): pass
# --------------------------------------------------------------------------- #
class VProCRC(object):
'''
Implements CRC algorithm, necessary for encoding and verifying data from
the Davis Vantage Pro unit.
'''
CRC_TABLE = (
0x0, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
0x1231, 0x210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
0x3653, 0x2672, 0x1611, 0x630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x840, 0x1861, 0x2802, 0x3823,
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0xa50, 0x3a33, 0x2a12,
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0xc60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0xe70,
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
0x1080, 0xa1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
0x2b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
0x34e2, 0x24c3, 0x14a0, 0x481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
0x26d3, 0x36f2, 0x691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x8e1, 0x3882, 0x28a3,
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0xaf1, 0x1ad0, 0x2ab3, 0x3a92,
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0xcc1,
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0xed1, 0x1ef0,
)
@staticmethod
def get(data):
'''
return CRC calc value from raw serial data
'''
crc = 0
for byte in array.array('B',data):
crc = (VProCRC.CRC_TABLE[ (crc>>8) ^ byte ] ^ ((crc&0xFF) << 8))
return crc
@staticmethod
def verify(data):
'''
perform CRC check on raw serial data, return true if valid.
a valid CRC == 0.
'''
if len(data) == 0:
return False
crc = VProCRC.get(data)
return not crc
# --------------------------------------------------------------------------- #
class myStruct( struct.Struct ):
'''
Implements a reusable class for working with a binary data structure. It
provides a named fields interface, similiar to C structures.
Usage: 1) subclass and extend _post_unpack method
2) instantiate directly, if no 'post unpack' processing needed
Arguments:
See `struct.Struct` class defintion.
'''
def __init__(self, fmt, order='@'):
self.fields, fmt_t = zip(*fmt)
fmt_s = order + ''.join(fmt_t)
super(myStruct,self).__init__( fmt_s )
def unpack(self, buf):
'''
see unpack_from()
'''
return self.unpack_from( buf, offset=0 )
def unpack_from(self, buf, offset=0 ):
'''
unpacks data from 'buf' and returns a dication of named fields. the
fields can be post-processed by extending the _post_unpack() method.
'''
data = super(myStruct,self).unpack_from( buf, offset)
items = dict(zip(self.fields,data))
return self._post_unpack(items)
def _post_unpack(self,items):
'''
perform data modification of any values, after unpacking from a buffer.
'''
return items
class LoopStruct( myStruct ):
'''
For unpacking data structure returned by the 'LOOP' command. this structure
contains all of the real-time data that can be read from the Davis Vantage
Pro.
'''
FMT = (
('LOO', '3s'), ('BarTrend', 'B'), ('PacketType', 'B'),
('NextRec', 'H'), ('Pressure', 'H'), ('TempIn', 'H'),
('HumIn', 'B'), ('TempOut', 'H'), ('WindSpeed', 'B'),
('WindSpeed10Min','B'),('WindDir', 'H'), ('ExtraTemp1', 'B'),
('ExtraTemp2', 'B'), ('ExtraTemp3', 'B'), ('ExtraTemp4', 'B'),
('ExtraTemp5', 'B'), ('ExtraTemp6', 'B'), ('ExtraTemp7', 'B'),
('SoilTemps', '4s'), ('LeafTemps', '4s'), ('HumOut', 'B'),
('ExtraHum1', 'B'), ('ExtraHum2', 'B'), ('ExtraHum3', 'B'),
('ExtraHum4', 'B'), ('ExtraHum5', 'B'), ('ExtraHum6', 'B'),
('ExtraHum7', 'B'), ('RainRate', 'H'), ('UV', 'B'),
('SolarRad', 'H'), ('RainStorm', 'H'), ('StormStartDate','H'),
('RainDay', 'H'), ('RainMonth', 'H'), ('RainYear', 'H'),
('ETDay', 'H'), ('ETMonth', 'H'), ('ETYear', 'H'),
('SoilMoist', '4s'), ('LeafWetness','4s'), ('AlarmIn', 'B'),
('AlarmRain', 'B'), ('AlarmOut' , '2s'), ('AlarmExTempHum','8s'),
('AlarmSoilLeaf','4s'),('BatteryStatus','B'), ('BatteryVolts','H'),
('ForecastIcon','B'), ('ForecastRuleNo','B'),('SunRise', 'H'),
('SunSet', 'H'), ('EOL', '2s'), ('CRC', 'H'),
)
def __init__(self, rain_bucket):
super(LoopStruct,self).__init__(self.FMT,'=')
self.rain_bucket = rain_bucket
def _post_unpack(self,items):
# Pressure
items['Pressure'] = units.InHgToHPa(items['Pressure'] / 1000.0)
# Temperature
items['TempIn'] = units.FToC(items['TempIn'] / 10.0)
items['TempOut'] = units.FToC(items['TempOut'] / 10.0)
items['ExtraTemp1'] = units.FToC(items['ExtraTemp1'] / 10.0) if items['ExtraTemp1'] != 255 else None
items['ExtraTemp2'] = units.FToC(items['ExtraTemp2'] / 10.0) if items['ExtraTemp2'] != 255 else None
items['ExtraTemp3'] = units.FToC(items['ExtraTemp3'] / 10.0) if items['ExtraTemp3'] != 255 else None
items['ExtraTemp4'] = units.FToC(items['ExtraTemp4'] / 10.0) if items['ExtraTemp4'] != 255 else None
items['ExtraTemp5'] = units.FToC(items['ExtraTemp5'] / 10.0) if items['ExtraTemp5'] != 255 else None
items['ExtraTemp6'] = units.FToC(items['ExtraTemp6'] / 10.0) if items['ExtraTemp6'] != 255 else None
items['ExtraTemp7'] = units.FToC(items['ExtraTemp7'] / 10.0) if items['ExtraTemp7'] != 255 else None
# Humidity
items['ExtraHum1'] = items['ExtraHum1'] if items['ExtraHum1'] != 255 else None
items['ExtraHum2'] = items['ExtraHum2'] if items['ExtraHum2'] != 255 else None
items['ExtraHum3'] = items['ExtraHum3'] if items['ExtraHum3'] != 255 else None
items['ExtraHum4'] = items['ExtraHum4'] if items['ExtraHum4'] != 255 else None
items['ExtraHum5'] = items['ExtraHum5'] if items['ExtraHum5'] != 255 else None
items['ExtraHum6'] = items['ExtraHum6'] if items['ExtraHum6'] != 255 else None
items['ExtraHum7'] = items['ExtraHum7'] if items['ExtraHum7'] != 255 else None
# Wind
#items['WindSpeed'] = units.MphToMps(items['WindSpeed'])
#items['WindSpeed10Min'] = units.MphToMps(items['WindSpeed10Min'])
# Rain / European version => each bucket tip ~ 0.2mm
if self.rain_bucket == 'eu':
items['RainRate'] = items['RainRate'] / 5.0
items['RainStorm'] = items['RainStorm'] / 5.0
items['RainDay'] = items['RainDay'] / 5.0
items['RainMonth'] = items['RainMonth'] / 5.0
items['RainYear'] = items['RainYear'] / 5.0
# Rain / US version => each bucket tip ~ 0.01 inches. Conversion to mm needed.
elif self.rain_bucket == 'us':
tems['WindSpeed'] = units.MphToMps(items['WindSpeed'])
items['WindSpeed10Min'] = units.MphToMps(items['WindSpeed10Min'])
items['RainRate'] = units.InToMm(items['RainRate'] / 100.0)
items['RainStorm'] = units.InToMm(items['RainStorm'] / 100.0)
items['RainDay'] = units.InToMm(items['RainDay'] / 100.0)
items['RainMonth'] = units.InToMm(items['RainMonth'] / 100.0)
items['RainYear'] = units.InToMm(items['RainYear'] / 100.0)
items['StormStartDate'] = self._unpack_storm_date(items['StormStartDate'])
# UV
items['UV'] = (items['UV'] / 10.0) if items['UV'] != 255 else None
# SolarRad
items['SolarRad'] = items['SolarRad'] if items['SolarRad'] != 32767 else None
# evapotranspiration totals
items['ETDay'] = items['ETDay'] / 1000.0
items['ETMonth'] = items['ETMonth'] / 100.0
items['ETYear'] = items['ETYear'] / 100.0
#soil moisture + leaf wetness
items['SoilMoist'] = struct.unpack('4B',items['SoilMoist'])
items['LeafWetness'] = struct.unpack('4B',items['LeafWetness'])
# battery statistics
items['BatteryVolts'] = items['BatteryVolts'] * 300 / 512.0 / 100.0
# sunrise / sunset
items['SunRise'] = self._unpack_time( items['SunRise'] )
items['SunSet'] = self._unpack_time( items['SunSet'] )
return items
@staticmethod
def _unpack_time( val ):
'''
given a packed time field, unpack and return "HH:MM" string.
'''
# format: HHMM, and space padded on the left.ex: "601" is 6:01 AM
return "%02d:%02d" % divmod(val,100) # covert to "06:01"
@staticmethod
def _unpack_storm_date( date ):
'''
given a packed storm date field, unpack and return 'YYYY-MM-DD' string.
'''
year = (date & 0x7f) + 2000 # 7 bits
day = (date >> 7) & 0x01f # 5 bits
month = (date >> 12) & 0x0f # 4 bits
return "%s-%s-%s" % (year, month, day)
if __name__ == '__main__':
"""Main only for testing"""
configfile = 'swpi.cfg'
cfg = config.config(configfile)
globalvars.meteo_data = meteodata.MeteoData(cfg)
ws = Sensor_VantagePro2(cfg)
ws.GetData()