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| # -*- coding:Utf-8 -*-
import time
import serial
DELAY_CONST = 0.001
MAXRETRIES = 10
HISTORY_BUFFER_ADR = 0x1A0
HISTORY_REC_NO = 1796
SETBIT = 0x12
UNSETBIT = 0x32
DEBUG = 0
def debug(s, level = 2, tab = 0):
if DEBUG >= level:
print " "*tab, s
def string2hex(s):
return " ".join(map(lambda(x):hex(ord(x)), s))
class WS3500():
def __init__(self, ser):
self.ser = ser
self._init = False
def _initialize(self):
debug("initialize()", level=1)
buff = "U"*2000
self.ser.write(buff)
debug("-DTR", tab=1)
self.ser.setDTR(0)
debug("-RTS", tab=1)
self.ser.setRTS(0)
INIT_WAIT = 500
i = 0
while i < INIT_WAIT and not self.ser.getDSR():
i += 1
time.sleep(DELAY_CONST)
if i == INIT_WAIT:
debug("timeout 1", level=1)
return 0
i = 0
time.sleep(DELAY_CONST)
while i < INIT_WAIT and self.ser.getDSR():
i += 1
time.sleep(DELAY_CONST)
if i != INIT_WAIT:
debug("+RTS", tab=1)
self.ser.setRTS(1)
debug("+DTR", tab=1)
self.ser.setDTR(1)
else:
debug("timeout 2", level=1)
return 0
self.ser.write(buff)
self._init = True
return 1
def _read_safe(self, address, number):
debug("read_safe(%i, %i)" % (address, number), level=1)
readdata = ""
readdata2 = ""
nb_tests = 1
for j in range(MAXRETRIES):
self._write_data(address, 0, None, tab=1)
readdata = self._read_data(number, tab=1)
if nb_tests == 2:
self._write_data(address, 0, None, tab=1)
readdata2 = self._read_data(number, tab=1)
if readdata == readdata2:
if readdata == chr(0) * number or readdata == "":
debug("--> only zeros", level=1, tab=1)
self._init = False
time.sleep(0.1)
self._initialize()
else:
break
else:
debug("--> not identical", level=1, tab=1)
else:
if readdata == chr(0) * number or readdata == "":
debug("--> only zeros", level=1, tab=1)
else:
break
if j == MAXRETRIES:
return -1
return readdata
def _read_data(self, number, tab=0):
debug("read_data(%i)" % number, level=1, tab=tab)
command = 0xa1
readdata = ""
if self._write_byte(command, tab=tab+1):
for i in range(number):
b = self._read_byte(tab=tab+1)
readdata = readdata + chr(b)
if i + 1 < number:
self._read_next_byte_seq(tab=tab+1)
self._read_last_byte_seq(tab=tab+1)
debug("--> %s" % string2hex(readdata), level=1, tab=tab)
return readdata
else:
debug("--> erreur read_data", level=1, tab=tab)
return ""
def _write_data(self, address, number, writedata, tab=0):
debug("write_data(%s, %i)" % (address, number), level=1, tab=tab)
command = 0xa0
i = -1
self._write_byte(command, tab=tab+1)
self._write_byte(address/256, tab=tab+1)
self._write_byte(address%256, tab=tab+1)
if writedata != None:
for i in range(number):
self._write_byte(ord(writedata[i]), tab=tab+1)
debug("-DTR", tab=tab)
self.ser.setDTR(0)
debug("-RTS", tab=tab)
self.ser.setRTS(0)
debug("+RTS", tab=tab)
self.ser.setRTS(1)
debug("+DTR", tab=tab)
self.ser.setDTR(1)
debug("-RTS", tab=tab)
self.ser.setRTS(0)
return i
def _read_next_byte_seq(self, tab=0):
debug("read_next_byte_seq()", level=1, tab=tab)
self._write_bit(0)
debug("-RTS", tab=tab)
self.ser.setRTS(0)
def _read_last_byte_seq(self, tab=0):
debug("read_last_byte_seq()", level=1, tab=tab)
debug("+RTS", tab=tab)
self.ser.setRTS(1)
debug("-DTR", tab=tab)
self.ser.setDTR(0)
debug("-RTS", tab=tab)
self.ser.setRTS(0)
debug("+RTS", tab=tab)
self.ser.setRTS(1)
debug("+DTR", tab=tab)
self.ser.setDTR(1)
debug("-RTS", tab=tab)
self.ser.setRTS(0)
def _read_bit(self, tab=0):
debug("read_bit()", level=1, tab=tab)
debug("-DTR", tab=tab)
self.ser.setDTR(0)
status = self.ser.getCTS()
debug("CTS ->" + str(status), tab=tab)
debug("+DTR", tab=tab)
self.ser.setDTR(1)
debug("--> %i" % int(not status), level=1, tab=tab)
return int(not status)
def _write_bit(self, bit, tab=0):
debug("write_bit(%i)" % bit, level=1, tab=tab)
if bit:
debug("->-RTS", tab=tab)
self.ser.setRTS(0)
else:
debug("->+RTS", tab=tab)
self.ser.setRTS(1)
debug("-DTR", tab=tab)
self.ser.setDTR(0)
debug("+DTR", tab=tab)
self.ser.setDTR(1)
def _read_byte(self, tab=0):
debug("read_byte()", level=1, tab=tab)
byte = 0
for i in range(8):
byte *= 2
byte += self._read_bit(tab=tab+1)
debug("--> %i - %s" % (byte, hex(byte)), level=1, tab=tab)
return byte
def _write_byte(self, byte, tab=0):
debug("write_byte(%i)" % byte, level=1, tab=tab)
for i in range(8):
self._write_bit(byte & 0x80, tab=tab+1)
byte <<= 1
byte &= 0xff
debug("-RTS", tab=tab)
self.ser.setRTS(0)
status = self.ser.getCTS()
debug("CTS->" + str(status), tab=tab)
debug("-DTR", tab=tab)
self.ser.setDTR(0)
debug("+DTR", tab=tab)
self.ser.setDTR(1)
debug("---> %i" % int(status), level=1, tab=tab)
if status:
return 1
else:
return 0
def conv_temp(self, data):
return ((ord(data[1]) & 0xF) * 10 + (ord(data[0]) >> 4) + (ord(data[0]) & 0xF) / 10.0) - 40.0
def conv_datetime(self, data):
minute = (ord(data[0]) >> 4) + (ord(data[1]) & 0xF) * 10
heure = (ord(data[1]) >> 4) + (ord(data[2]) & 0xF) * 10
jour = (ord(data[2]) >> 4) + (ord(data[3]) & 0xF) * 10
mois = (ord(data[3]) >> 4) + (ord(data[4]) & 0xF) * 10
annee = 2000 + (ord(data[4]) >> 4) + (ord(data[5]) & 0xF) * 10
return "%04i-%02i-%02i %02i:%02i" % (annee, mois, jour, heure, minute)
def conv_datetime2(self, data):
minute = (ord(data[0]) >> 4) * 10 + (ord(data[0]) & 0xF)
heure = (ord(data[1]) >> 4) * 10 + (ord(data[1]) & 0xF)
jour = (ord(data[2]) >> 4) * 10 + (ord(data[2]) & 0xF)
mois = (ord(data[3]) >> 4) * 10 + (ord(data[3]) & 0xF)
annee = 2000 + (ord(data[4]) >> 4) * 10 + (ord(data[4]) & 0xF)
return "%04i-%02i-%02i %02i:%02i" % (annee, mois, jour, heure, minute)
def getTemp(self, address, meteo_data = None):
l = 2
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return self.conv_temp(data_read)
def getTempBCD(self, address, meteo_data = None):
l = 2
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return (ord(data_read[1]) >> 4) * 10 + (ord(data_read[1] )& 0xF) + (ord(data_read[0]) >> 4) / 10.0 - 40.0
def getDateTime(self, address, meteo_data = None):
l = 6
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return self.conv_datetime(data_read)
def getDateTime2(self, address, meteo_data = None):
l = 5
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return self.conv_datetime2(data_read)
def getHumidity(self, address, meteo_data = None):
l = 1
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return (ord(data_read[0]) >> 4) * 10 + (ord(data_read[0]) & 0xf)
def getPressure(self, address, meteo_data = None):
l = 3
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return (ord(data_read[2]) & 0xF) * 1000 + (ord(data_read[1]) >> 4) * 100 + (ord(data_read[1]) & 0xF) * 10 + (ord(data_read[0]) >> 4) + (ord(data_read[0]) & 0xF) / 10.0
def temp_int(self, meteo_data = None):
address = 0x26
return self.getTemp(address, meteo_data)
def temp_ext(self, meteo_data = None):
address = 0x3D
return self.getTemp(address, meteo_data)
def temperature_indoor_minmax(self, meteo_data = None):
address_min = 0x28
address_max = 0x2B
address_mintime = 0x2C
address_maxtime = 0x31
data = []
data.append(self.getTempBCD(address_min, meteo_data))
data.append(self.getTemp(address_max, meteo_data))
data.append(self.getDateTime(address_mintime, meteo_data))
data.append(self.getDateTime(address_maxtime, meteo_data))
return data
def temperature_outdoor_minmax(self, meteo_data = None):
address_min = 0x3F
address_max = 0x42
address_mintime = 0x43
address_maxtime = 0x48
data = []
data.append(self.getTempBCD(address_min, meteo_data))
data.append(self.getTemp(address_max, meteo_data))
data.append(self.getDateTime(address_mintime, meteo_data))
data.append(self.getDateTime(address_maxtime, meteo_data))
return data
def dewpoint(self, meteo_data = None):
address = 0x6B
return self.getTemp(address, meteo_data)
def dewpoint_minmax(self, meteo_data = None):
address_min = 0x6D
address_max = 0x70
address_mintime = 0x71
address_maxtime = 0x76
data = []
data.append(self.getTempBCD(address_min, meteo_data))
data.append(self.getTemp(address_max, meteo_data))
data.append(self.getDateTime(address_mintime, meteo_data))
data.append(self.getDateTime(address_maxtime, meteo_data))
return data
def humidity_indoor(self, meteo_data = None):
address = 0x81
return self.getHumidity(address, meteo_data)
def humidity_outdoor(self, meteo_data = None):
address = 0x90
return self.getHumidity(address, meteo_data)
def humidity_indoor_minmax(self, meteo_data = None):
address_min = 0x82
address_max = 0x83
address_mintime = 0x84
address_maxtime = 0x89
data = []
data.append(self.getHumidity(address_min, meteo_data))
data.append(self.getHumidity(address_max, meteo_data))
data.append(self.getDateTime2(address_mintime, meteo_data))
data.append(self.getDateTime2(address_maxtime, meteo_data))
return data
def humidity_outdoor_minmax(self, meteo_data = None):
address_min = 0x91
address_max = 0x92
address_mintime = 0x93
address_maxtime = 0x98
data = []
data.append(self.getHumidity(address_min, meteo_data))
data.append(self.getHumidity(address_max, meteo_data))
data.append(self.getDateTime2(address_mintime, meteo_data))
data.append(self.getDateTime2(address_maxtime, meteo_data))
return data
def rel_pressure(self, meteo_data = None):
address = 0x13D
return self.getPressure(address, meteo_data)
def rel_pressure_minmax(self, meteo_data = None):
address_min = 0x156
address_max = 0x14C
address_mintime = 0x160
address_maxtime = 0x15B
data = []
data.append(self.getPressure(address_min, meteo_data))
data.append(self.getPressure(address_max, meteo_data))
data.append(self.getDateTime2(address_mintime, meteo_data))
data.append(self.getDateTime2(address_maxtime, meteo_data))
return data
def abs_pressure(self, meteo_data = None):
address = 0x138
return self.getPressure(address, meteo_data)
def abs_pressure_minmax(self, meteo_data = None):
address_min = 0x5F6
address_max = 0x5F6 + 12
address_mintime = 0x61E
address_maxtime = 0x61E + 5
data = []
data.append(self.getPressure(address_min, meteo_data))
data.append(self.getPressure(address_max, meteo_data))
data.append(self.getDateTime2(address_mintime, meteo_data))
data.append(self.getDateTime2(address_maxtime, meteo_data))
return data
def tendency_forecast(self, meteo_data = None):
address = 0x24
l = 1
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
tendency_values = ["Constant", "Augmentant", "Diminuant"]
forecast_values = ["Pluvieux", "Nuageux", "Ensoleillé"]
return tendency_values[ord(data_read[0]) >> 4], forecast_values[ord(data_read[0]) & 0xF]
def read_history_info(self):
if not self._init:
if not self._initialize():
return ""
address = 0x6B2 - 2
l = 12
data_read = self._read_safe(address, l)
debug(string2hex(data_read), 1)
data = []
interval = (ord(data_read[1]) & 0xF) * 256 + ord(data_read[0]) + 1
data.append(interval)
countdown = ord(data_read[2])*16 + (ord(data_read[1]) >> 4) + 1
data.append(countdown)
jour = (ord(data_read[0]) >> 4) * 10 + (ord(data_read[0]) & 0xF)
mois = (ord(data_read[1]) >> 4) * 10 + (ord(data_read[1]) & 0xF)
annee = 2000 + (ord(data_read[2]) >> 4) * 10 + (ord(data_read[2]) & 0xF)
data.append((jour, mois, annee))
no_records = ord(data_read[9])
data.append(no_records)
return data
def read_history_record(self, data, record_no):
record = data
minute = ((ord(record[0]) & 0xf0) >> 4)* 10 + (ord(record[0]) & 0xf)
if minute >= 60:
return None
heure = ((ord(record[1]) & 0xf0) >> 4) * 10 + (ord(record[1]) & 0xf)
jour = ((ord(record[2]) & 0xf0) >> 4) * 10 + (ord(record[2]) & 0xf)
mois = ((ord(record[3]) & 0xf0) >> 4) * 10 + (ord(record[3]) & 0xf)
annee = 2000 + ((ord(record[4]) & 0xf0) >> 4) * 10 + (ord(record[4]) & 0xf)
temperature_indoor = ((ord(record[5]) & 0xf0) >> 4) * 10 + (ord(record[5]) & 0xf)
temperature_indoor += (ord(record[6]) & 0xf) * 100 - 400
##temperature_indoor /= 10.0
temperature_outdoor = (ord(record[6]) & 0xf0) >> 4
temperature_outdoor += ((ord(record[7]) & 0xf0) >> 4) * 100 + (ord(record[7]) & 0xf) * 10 - 400
##temperature_outdoor /= 10.0
pressure = ((ord(record[8]) & 0xf0) >> 4) * 10 + (ord(record[8]) & 0xf)
pressure += ((ord(record[9]) & 0xf0) >> 4) * 1000 + (ord(record[9]) & 0xf) * 100
pressure += (ord(record[10]) & 0xf) * 10000
##pressure /= 10.0
humidity_indoor = (ord(record[10]) & 0xf0) >> 4
humidity_indoor += (ord(record[11]) & 0xf) * 10
humidity_outdoor = (ord(record[11]) & 0xf0) >> 4
humidity_outdoor += (ord(record[12]) & 0xf) * 10
raincount = ord(record[12]) >> 4
raincount += ord(record[13]) * 16
windspeed = (ord(record[15]) & 0xf) * 256 + ord(record[14])
##windspeed /= 10.0
if (ord(record[17]) & 0xf) != 1 or ord(record[16]) != 0xFE:
windgust = (ord(record[17]) & 0xf) * 256 + ord(record[16])
##windgust /= 10.0
else:
windgust = -1
winddir_degrees = ((ord(record[15]) & 0xF0)>> 4) * 22.5
return ["%04i-%02i-%02i %02i:%02i" % (annee, mois, jour, heure, minute), temperature_indoor, temperature_outdoor, pressure, humidity_indoor, humidity_outdoor, raincount, windspeed, winddir_degrees]
def read_history(self, delai_dernier_releve = 0):
if not self._init:
if not self._initialize():
return ""
l = 0x7fff - HISTORY_BUFFER_ADR + 1
nb = 12 * 5 * 20
l = 18 * nb
nb_enreg_max = 1750
address_max = HISTORY_BUFFER_ADR + nb_enreg_max * 18 - 1
address = HISTORY_BUFFER_ADR
end_of_data = False
data = []
j = 0
last_record = None
while not end_of_data and j < MAXRETRIES:
nb_ok = 0
j += 1
debug("read history from address : %s" % hex(address), 1)
if l + address > address_max:
l = address_max - address + 1
if l > 0:
data_read = self._read_safe(address, l)
if data_read:
for i in range(nb):##range(HISTORY_REC_NO):
try:
record = None
record = self.read_history_record(data_read[i*18:(i+1)*18], i)
except Exception, e:
print "exception :", e, i, string2hex(data_read[i*18:(i+1)*18])
record = None
if record is None:
end_of_data = False
break
else:
last_record = record
nb_ok += 1
data.append(record)
address += 18 * nb_ok
if last_record and delai_dernier_releve > 0 :
try:
if DateTime.DateTimeFrom(last_record[0]) + DateTime.RelativeDateTime(minutes = delai_dernier_releve) > DateTime.now():
end_of_data = True
except:
pass
else:
debug("no data read", 1)
end_of_data = False
return data
def recording_interval(self, meteo_data = None):
## returned value by the station :
## 0 - 1 min
## 1 - 5 min
## 2 - 10 min
## 3 - 15 min
## 4 - 20 min
## 5 - 30 min
## 6 - 60 min
## 7 - 2 hours
## 8 - 3 hours
## 9 - 4 hours
## A - 6 hours
## B - 8 hours
## C - 12 hours
## D - 24 hours
duree = {0 : 1,
1 : 5,
2 : 10,
3 : 15,
4 : 20,
5 : 30,
6 : 60,
7 : 120,
8 : 180,
9 : 240,
0xa : 360,
0xb : 480,
0xc : 720,
0xd : 1440}
l = 1
address = 0xE3
if meteo_data is None:
if not self._init:
if not self._initialize():
return ""
data_read = self._read_safe(address, l)
else:
data_read = meteo_data[address:address+l]
return duree[ord(data_read[0]) >> 4]
def load_main_data(self):
if not self._init:
if not self._initialize():
return ""
address = 0x00
l = 0x16F
data_read = self._read_safe(address, l)
return data_read
def light(self, active):
## Doesn't work
if not self._init:
if not self._initialize():
return ""
address = 0x16
l = 1
if active:
writedata = chr(SETBIT)
else:
writedata = chr(UNSETBIT)
self._write_data(address, l, writedata, tab=1)
class Station:
def __init__(self):
ser = serial.Serial('/dev/ttyS0', baudrate=300, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=None, writeTimeout=None, rtscts=0, dsrdtr=None, xonxoff=0)
try:
self.ws = WS3500(ser)
self.meteo_data = self.ws.load_main_data()
if self.meteo_data:
self.t_int = self.ws.temp_int(self.meteo_data)
self.t_ext = self.ws.temp_ext(self.meteo_data)
self.p_rosee = self.ws.dewpoint(self.meteo_data)
self.h_int = self.ws.humidity_indoor(self.meteo_data)
self.h_ext = self.ws.humidity_outdoor(self.meteo_data)
self.tendency = self.ws.tendency_forecast(self.meteo_data)
self.p_rel = self.ws.rel_pressure(self.meteo_data)
except serial.SerialException, e:
print "SerialException :", e
except Exception, e:
print "Exception :", e
finally:
ser.close()
def getError(self):
return self.err
def getIntTemp(self):
return self.t_int
def getExtTemp(self):
return self.t_ext
def getPtRosee(self):
return self.p_rosee
def getIntHum(self):
return self.h_int
def getExtHum(self):
return self.h_ext
def getTendency(self):
self.tendency = self.ws.tendency_forecast(self.meteo_data)
self.t_tendency = "le temps sera prochainement %s et %s" % (self.tendency[0], self.tendency[1])
return self.t_tendency
def getIntPress(self):
return self.p_rel |
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