def read_sensors():
global session, date_time, lat, lon, temp, humid
try:
report = session.next()
# Wait for a 'TPV' report and display the current time
# To see all report data, uncomment the line below
if report['class'] == 'TPV':
if hasattr(report, 'time'):
#print 'time\t\t', report.time
date_time = report.time
if hasattr(report, 'lat'):
#print 'latitude\t', report.lat
lat = report.lat
if hasattr(report, 'lon'):
#print 'longitude\t', report.lon
lon = report.lon
#print 'temperature\t', htu.read_temperature()
#print 'humidity\t', htu.read_humidity()
temp = htu.read_temperature()
humid = htu.read_humidity()
path_writer.writerow([date_time, lat, lon, temp, humid])
except KeyError:
pass
except StopIteration:
session = None
print "GPSD has terminated"
def getTemperature():
tempList = []
for x in range(100):
HTU21DF.htu_reset
tempList.append(
celcius_to_fahrenheit(HTU21DF.read_temperature())
)
return median(tempList)
def prog(filename="/home/pi/data/htu21df.log", sleeptime=3600): while True: # reset sensor and collect data for next log entry. HTU21DF.htu_reset temperature = HTU21DF.read_temperature() humidity = HTU21DF.read_humidity() cur_date = datetime.date.today() cur_time = time.time() data = [cur_date, cur_time, temperature, humidity] # save new data entry write_to_log(filename, data) # sleep until ready to collect next measurements. time.sleep(sleeptime)
def prog(filename):
err=0
try:
print ("Reading humidity")
HTU21DF.htu_reset
humidity=HTU21DF.read_humidity()
temp1=HTU21DF.read_temperature()
time.sleep(5)
except:
print ("Failed")
humidity="NA"
temp1=0
err=1
try:
print ("Reading the barometer")
barometer = BMP085.BMP085(mode=BMP085.BMP085_ULTRAHIGHRES)
pressure=barometer.read_pressure()
temp2=barometer.read_temperature()
time.sleep(5)
except:
print ("Failed")
pressure="NA"
temp2=0
err=1
if (temp1==0 or temp2==0):
temp=temp1+temp2
else:
temp=(temp1+temp2)/2
try:
print ("Reading Lux level")
lux=readLux()
time.sleep(5)
except:
print ("Failed")
lux=""
err=1
datetime=strftime("%Y-%m-%d\t%H:%M:%S")
data=[datetime,temp,humidity,pressure,lux]
# savenewdataentry
write_to_log(filename,data)
hour=strftime("%H")
if int(hour) < 7:
write_lux("/home/pi/lux.csv",lux)
return err
# A simple program to test the driver
import time
import HTU21DF
while True:
print("sending reset...")
HTU21DF.htu_reset
temperature = HTU21DF.read_temperature()
print("The temperature is %f C." % temperature)
time.sleep(1)
humidity = HTU21DF.read_humidity()
print("The humidity is %F percent." % humidity)
time.sleep(1)
while True:
curr = datetime.now()
if curr > end and plzFail:
print('error')
break
value2 = 8500
#time.sleep(.5)
print("sending reset...")
# Print a two line message
lcd.message('Sending reset...')
time.sleep(1)
lcd.clear()
#temperature
HTU21DF.htu_reset
temperature = HTU21DF.read_temperature()
tempf = (temperature * 1.8) + 32
time.sleep(.5)
#humidity
humidity = HTU21DF.read_humidity()
time.sleep(.5)
# status, pres MSB1, pres MSB, pres LSB
data = bus.read_i2c_block_data(0x60, 0x00, 4)
# Convert the data to 20-bits
pres = ((data[1] * 65536) + (data[2] * 256) + (data[3] & 0xF0)) / 16
pressure = (pres / 4.0) / 1000.0
#smoke
value = adc.read_adc(3, gain=GAIN)
value = value / 10
def getTemperature(): HTU21DF.htu_reset() return HTU21DF.read_temperature()
import time
import HTU21DF
def median(x):
m,r= divmod(len(x),2)
if r:
return sorted(x)[m]
return sum(sorted(x)[m-1:m+1])/2
def average(x):
return sum(x)/len(x)
tempList = []
for x in range(1000):
HTU21DF.htu_reset
tempList.append(HTU21DF.read_temperature())
print 'median is {0}'.format(median(tempList))
print 'average is {0}'.format(average(tempList))
print 'minimum value is {0}, maximum value is {1}'.format(min(tempList), max(tempList))
print 'difference is {0}'.format(max(tempList) - min(tempList))
def read_values(self):
logging.info('Performing measurement ...')
self._temperature = HTU21DF.read_temperature()
self._humidity = HTU21DF.read_humidity()
logging.info('Got measurement: temperature: {}, humidity: {}'.format(
self._temperature, self._temperature))
