def getReading():
# Choose a gain of 1 for reading voltages from 0 to 4.09V.
# Or pick a different gain to change the range of voltages that are read:
# - 2/3 = +/-6.144V
# - 1 = +/-4.096V
# - 2 = +/-2.048V
# - 4 = +/-1.024V
# - 8 = +/-0.512V
# - 16 = +/-0.256V
# See table 3 in the ADS1015/ADS1115 datasheet for more info on gain.
# see UV csensor data sheet: https://cdn.sparkfun.com/datasheets/Sensors/LightImaging/ML8511_3-8-13.pdf
GAIN = 2 / 3
# the channel on the ADC to use
CHANNEL = 1
# Create an ADS1115 ADC (16-bit) instance and do stuff with it
adc = Adafruit_ADS1x15.ADS1115()
adc.start_adc(CHANNEL, gain=GAIN)
start = time.time()
value = 0
cnt = 0
totalVoltage = 0
while (time.time() - start) <= 5.0:
totalVoltage += adc.get_last_result()
cnt += 1
time.sleep(0.5)
# Stop continuous conversion. After this point you can't get data from get_last_result!
adc.stop_adc()
avgVoltage = totalVoltage / cnt
return (SensorReading("uv", "UV", voltToUvIndex(avgVoltage),
"index [DEBUG: bad math]"),
SensorReading("solarradiation", "solarradiation", avgVoltage,
"W/m^2"))
def getReading():
#NOT WORKING: hum, tem = Adafruit_DHT.read_retry(sensor, gpio)
#WORKINGISH: hum, tem = Adafruit_DHT.read_retry(11, 5)
humid, tempC = Adafruit_DHT.read_retry(11, 5)
tempf = c_to_f(tempC)
dhtHum = SensorReading("dht11", "humidity", humid, "%")
dhtTem = SensorReading("dht11", "tempf", tempf, "f")
return (dhtTem,dhtHum)
def getReading():
# Get I2C bus
bus = smbus.SMBus(1)
# MPL3115A2 address, 0x60(96)
# Select control register, 0x26(38)
# 0xB9(185) Active mode, OSR = 128, Altimeter mode
bus.write_byte_data(0x60, 0x26, 0xB9)
# MPL3115A2 address, 0x60(96)
# Select data configuration register, 0x13(19)
# 0x07(07) Data ready event enabled for altitude, pressure, temperature
bus.write_byte_data(0x60, 0x13, 0x07)
# MPL3115A2 address, 0x60(96)
# Select control register, 0x26(38)
# 0xB9(185) Active mode, OSR = 128, Altimeter mode
bus.write_byte_data(0x60, 0x26, 0xB9)
time.sleep(1)
# MPL3115A2 address, 0x60(96)
# Read data back from 0x00(00), 6 bytes
# status, tHeight MSB1, tHeight MSB, tHeight LSB, temp MSB, temp LSB
data = bus.read_i2c_block_data(0x60, 0x00, 6)
# Convert the data to 20-bits
tHeight = ((data[1] * 65536) + (data[2] * 256) + (data[3] & 0xF0)) / 16
temp = ((data[4] * 256) + (data[5] & 0xF0)) / 16
thisAltitude = tHeight / 16.0
cTemp = temp / 16.0
fTemp = c_to_f(cTemp)
# MPL3115A2 address, 0x60(96)
# Select control register, 0x26(38)
# 0x39(57) Active mode, OSR = 128, Barometer mode
bus.write_byte_data(0x60, 0x26, 0x39)
time.sleep(1)
# MPL3115A2 address, 0x60(96)
# Read data back from 0x00(00), 4 bytes
# 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
thisPressure = (pres / 4.0) / 3000.0
mplPres = SensorReading("MPL3115A2", "baromin", thisPressure, "hpa")
mplTem = SensorReading("MPL3115A2", "tempf", fTemp, "f")
mplAlt = SensorReading("MPL3115A2", "altitude", thisAltitude, "m")
return (mplTem, mplPres, mplAlt)
def getPeriodTotal(self, newLabel, period):
global sensorLog
thisSum = 0
# need to have some readings for this to make sense
if len(self.sensorLog) > 0:
for thisReading in self.sensorLog:
if (time.time() - thisReading.timeStamp) <= period:
thisSum += thisReading.value
return (SensorReading(self.sensor, newLabel, thisSum, self.unit))
def logSensorEvent(self, channel):
global sensorLog
# add to the global sensor array
self.sensorLog.append(
SensorReading(self.sensor, self.label, self.calibration,
self.unit))
# remove last until no more older than periodToKeep
while (time.time() - self.sensorLog[0].timeStamp) >= self.periodToKeep:
del self.sensorLog[0]
def getReading():
# Choose a gain of 1 for reading voltages from 0 to 4.09V.
# Or pick a different gain to change the range of voltages that are read:
# - 2/3 = +/-6.144V
# - 1 = +/-4.096V
# - 2 = +/-2.048V
# - 4 = +/-1.024V
# - 8 = +/-0.512V
# - 16 = +/-0.256V
# See table 3 in the ADS1015/ADS1115 datasheet for more info on gain.
GAIN = 16
# the channel on the ADC to use
CHANNEL = 0
# Create an ADS1115 ADC (16-bit) instance and do stuff with it
adc = Adafruit_ADS1x15.ADS1115()
adc.start_adc(CHANNEL, gain=GAIN)
start = time.time()
value = 0
totalVoltage = 0
cnt = 0
#DEBUG
#print("[PRE]adc.get_last_result()[",adc.get_last_result(),"]")
while (time.time() - start) <= 5.0:
# will sometimes give negative results
thisRead = -1
while thisRead < 1:
thisRead = adc.get_last_result()
#DEBUG: finding they are about a decimal place out
#DEBUG: hacky
#DEBUG
#print(cnt,": thisRead[",thisRead,"]")
totalVoltage += thisRead / 10 #DEBUG: /10 to get it into a measurable range. this is bad and wrong
cnt += 1
time.sleep(0.5)
#DEBUG
#print("[POST]adc.get_last_result()[",adc.get_last_result(),"]")
# Stop continuous conversion. After this point you can't get data from get_last_result!
adc.stop_adc()
avgVoltage = totalVoltage / cnt
#DEBUG
#print("avgVoltage[",avgVoltage,"] = totalVoltage[",totalVoltage,"] / cnt[",cnt,"] (G:[",GAIN,"] C:[",CHANNEL,"])")
return(SensorReading("winddir", "winddir", convertors.voltToDeg(avgVoltage,WIND_READ_VOLT,WIND_DIR_MOUNT_ADJ), "degree angle"))
def getLast(self):
global sensorLog
if len(self.sensorLog) > 0:
return (self.sensorLog[-1])
else:
return (SensorReading(self.sensor, self.label, 0, self.unit))