def _read(self):
dallas = self.parent
dallas.reset()
dallas.matchrom(self.address)
dallas.readscratch()
result = dallas.readbytes(9)
if crc_of(result) == 0:
t = unpack('<h', result[:2])[0]
self.result = t
if self.bad_crc_count > 10: #was logged as bad
msglog.log('DallasBus', 'information', 'Resumed: %s' % \
as_node_url(self))
self.bad_crc_count = 0
t = uptime_secs()
self.scan_period = t - self._last_read_time
self._last_read_time = t
if self.debug:
print "TEMPERATURE SENSOR: _read value", self.result
else:
if self.bad_crc_count < 11:
self.bad_crc_count += 1
if self.bad_crc_count == 10:
self.result = None #return ETimeout to gets
raise EInvalidResponse('Failed read ten times: %s' % \
as_node_url(self))
if self.debug:
print "TEMPERATURE SENSOR: BAD CRC", result
return
def get(self, skipCache=0):
t = uptime_secs()
if self._ttl > t and skipCache == 0: # return cached value
return self._value
self._ttl = t + self.ttl # set time of ttl expire
self._value = self._data_type(self.convert())
return self._value
def _scan_sensors(self):
self.children_nodes() # trigger autodiscovery to get the ball rolling
while 1:
try:
while self.running:
sensors = self.children_nodes(auto_discover=0)[:]
for sensor in sensors:
# add a little pause based on number of sensors
delay = 11.0 / len(
sensors) # roughly one sensor per sec
if delay < 0.5:
delay = 0.5
pause(delay)
try:
if not self.running: break
sensor.result = self._read_temperature_for(sensor)
if sensor.bad_crc_count > 10: #was logged as bad
msglog.log('DallasBus', 'information', 'Resumed: %s' % \
as_node_url(sensor))
sensor.bad_crc_count = 0
# update the scan_period that shows up in configuration
t = uptime_secs()
sensor.scan_period = t - sensor._last_read_time
sensor._last_read_time = t
except:
if sensor.bad_crc_count < 11:
sensor.bad_crc_count += 1
if sensor.bad_crc_count == 10:
sensor.result = None #return ETimeout to gets
msglog.log('DallasBus', 'information', 'Failed: %s' % \
as_node_url(sensor))
if not sensors: pause(17) # slow down if no dallas bus
except:
if self.debug: msglog.exception()
pause(30)
def get(self, skipCache=0):
t = uptime_secs()
if self._ttl > t and skipCache == 0: # return cached value
return self._value
self._ttl = t + self.ttl # set time of ttl expire
self._value = self._data_type(self.convert())
return self._value
def _scan_sensors(self):
self.children_nodes() # trigger autodiscovery to get the ball rolling
while 1:
try:
while self.running:
sensors = self.children_nodes(auto_discover=0)[:]
for sensor in sensors:
# add a little pause based on number of sensors
delay = 11.0 / len(sensors) # roughly one sensor per sec
if delay < 0.5:
delay = 0.5
pause(delay)
try:
if not self.running: break
sensor.result = self._read_temperature_for(sensor)
if sensor.bad_crc_count > 10: #was logged as bad
msglog.log('DallasBus', 'information', 'Resumed: %s' % \
as_node_url(sensor))
sensor.bad_crc_count = 0
# update the scan_period that shows up in configuration
t = uptime_secs()
sensor.scan_period = t - sensor._last_read_time
sensor._last_read_time = t
except:
if sensor.bad_crc_count < 11:
sensor.bad_crc_count += 1
if sensor.bad_crc_count == 10:
sensor.result = None #return ETimeout to gets
msglog.log('DallasBus', 'information', 'Failed: %s' % \
as_node_url(sensor))
if not sensors: pause(17) # slow down if no dallas bus
except:
if self.debug: msglog.exception()
pause(30)
def _read(self):
dallas = self.parent
dallas.reset()
dallas.matchrom(self.address)
dallas.readscratch()
result = dallas.readbytes(9)
if crc_of(result) == 0:
t = unpack('<h', result[:2])[0]
self.result = t
if self.bad_crc_count > 10: #was logged as bad
msglog.log('DallasBus', 'information', 'Resumed: %s' % \
as_node_url(self))
self.bad_crc_count = 0
t = uptime_secs()
self.scan_period = t - self._last_read_time
self._last_read_time = t
if self.debug:
print "TEMPERATURE SENSOR: _read value", self.result
else:
if self.bad_crc_count < 11:
self.bad_crc_count += 1
if self.bad_crc_count == 10:
self.result = None #return ETimeout to gets
raise EInvalidResponse('Failed read ten times: %s' % \
as_node_url(self))
if self.debug:
print "TEMPERATURE SENSOR: BAD CRC", result
return
