def __init__(self, api_key, feed, serial_port, delay=5):
"""Setup hardware and remote feeds.
@param api_key This is the key from Cosm.com
@param feed This is the feed ID from Cosm.com
@param serial_port Where to read data from
@param delay Number of seconds to wait between read/sends.
"""
self.api_key = api_key
self.feed = feed
self.serial_port = serial_port
self.delay = delay
self.arduino = Arduino(self.serial_port)
self.iterator = util.Iterator(self.arduino)
self.iterator.start()
self.cosm = CosmSender(self.api_key, self.feed, {}, cacheSize=0)
self.streams = {}
# We're accessing the 1-wire bus directly from python but
# if you want to use owserver:
# ow.init( 'localhost:3030' ) # /opt/owfs/bin/owserver -p 3030 -u -r
sensors = ow.Sensor("/").sensorList()
dataStreamDefaults = {
"unit": {
"type" : "derivedSI",
"label" : "degree Celsius",
"symbol": u"\u00B0C"}
}
c = CosmSender(API_KEY, FEED, dataStreamDefaults, cacheSize=3)
# We're only interested in temperature sensors so remove
# any 1-wire devices which aren't temperature sensors
for sensor in sensors[:]:
if sensor.type != 'DS18B20':
sensors.remove( sensor )
# Print column headers
for sensor in sensors:
print sensor.r_address + "\t",
print "\n",
# Print temperatures
while True:
print int(time.time()), "\t",
#########################################
# initialise serial port
ser = serial.Serial(SERIAL_PORT, 57600)
ser.flushInput()
# Setup CosmSender
dataStreamDefaults = {
"min_value" : "0.0",
"unit": { "type" : "derivedSI",
"label" : "watt",
"symbol": "W"
}
}
c = CosmSender(API_KEY, FEED, dataStreamDefaults, cacheSize=10)
# continually pull data from current cost, write to file, print to stout and send to Cosm
while True:
# Get data from Current Cost Envi
sensor, watts = pullFromCurrentCost()
# open data file
try:
datafile = open(FILENAME, 'a+')
except Exception, e:
sys.stderr.write("""ERROR: Failed to open data file " + FILENAME +
Has it been configured correctly in config.xml?""")
raise
# Print data to the file
class AlternatePowerReporter(object):
"""Read a load of things, send to cosm."""
def __init__(self, api_key, feed, serial_port, delay=5):
"""Setup hardware and remote feeds.
@param api_key This is the key from Cosm.com
@param feed This is the feed ID from Cosm.com
@param serial_port Where to read data from
@param delay Number of seconds to wait between read/sends.
"""
self.api_key = api_key
self.feed = feed
self.serial_port = serial_port
self.delay = delay
self.arduino = Arduino(self.serial_port)
self.iterator = util.Iterator(self.arduino)
self.iterator.start()
self.cosm = CosmSender(self.api_key, self.feed, {}, cacheSize=0)
self.streams = {}
def add_sensor(self, pin_string, feed_id, fn):
"""Add a sensor (on the arduino) to our read list.
:param pin_string: e.g. a:0:i (see pyFirmata docs)
:param feed_id: e.g. solar_current (datastream on cosm)
:param fn: the function to run on the pin readout before sending
"""
self.streams[feed_id] = {
'pin': self.arduino.get_pin(pin_string),
'fn': fn,
}
def read_sensors(self):
"""Read all of the pins we know about, return them."""
results = {}
for i in range(self.delay * 1000):
for stream, params in self.streams.items():
val = params['pin'].read()
if val:
results.setdefault(stream, {'sum': 0, 'reads': 0})
results[stream]['sum'] += params['fn'](val)
results[stream]['reads'] += 1
time.sleep(1 / 1000.0)
for stream, params in results.items():
results[stream]['value'] = (
results[stream]['sum'] / float(results[stream]['reads']))
log.debug("Data is %s" % results)
return results
def send_data(self, data):
"""Send stuff to cosm."""
for stream, params in data.items():
log.debug("Sending data for %s" % stream)
self.cosm.sendData(stream, str(params['value']))
def run(self):
while True:
data = self.read_sensors()
self.send_data(data)
def test_setup(self):
"""Check that the streams defined are available etc."""
for stream in self.streams:
if not stream in self.cosm.cache:
log.warn(
"Stream '%s' not set up on Cosm, will be created" % (
stream))
# initialise serial port
ser = serial.Serial(SERIAL_PORT, 57600)
ser.flushInput()
# Setup CosmSender
dataStreamDefaults = {
"min_value": "0.0",
"unit": {
"type": "derivedSI",
"label": "watt",
"symbol": "W"
}
}
c = CosmSender(API_KEY, FEED, dataStreamDefaults, cacheSize=10)
# continually pull data from current cost, write to file, print to stout and send to Cosm
while True:
# Get data from Current Cost Envi
sensor, watts = pullFromCurrentCost()
# open data file
try:
datafile = open(FILENAME, 'a+')
except Exception, e:
sys.stderr.write("""ERROR: Failed to open data file " + FILENAME +
Has it been configured correctly in config.xml?""")
raise
# Print data to the file