def __init__(self, rtc):
self.rtc = rtc
# Try to access the SD card and make the new path
try:
sd = SD()
os.mount(sd, '/sd')
self.sensor_file = "/sd/{0}".format(SENSOR_DATA)
print("INFO: Using SD card for data.")
except:
print("ERROR: cannot mount SD card, reverting to flash!")
self.sensor_file = SENSOR_DATA
print("Data filename = {0}".format(self.sensor_file))
# Setup the dictionary for each soil moisture sensor
adc = ADC(0)
soil_moisture1 = {
'sensor': adc.channel(pin='P13', attn=3),
'power': Pin('P19', Pin.OUT),
'location': 'Green ceramic pot on top shelf',
'num': 1,
}
soil_moisture2 = {
'sensor': adc.channel(pin='P14', attn=3),
'power': Pin('P20', Pin.OUT),
'location': 'Fern on bottom shelf',
'num': 2,
}
# Setup a list for each sensor dictionary
self.sensors = [soil_moisture1, soil_moisture2]
# Setup the alarm to read the sensors
a = Timer.Alarm(handler=self._read_sensors,
s=UPDATE_FREQ,
periodic=True)
print("Plant Monitor class is ready...")
def main():
pkt_tx_queue = []
def audio_frame_ready(data):
pkt_tx_queue.append(data)
lora_ctl = lora.LoRaController()
spk = speaker.Speaker(DAC('P22'))
adc = ADC()
apin = adc.channel(pin='P13', attn=ADC.ATTN_11DB)
uphone = microphone.Microphone(apin, audio_frame_ready)
tlk_btn = talk_button.TalkButton(uphone)
print('Started ...')
flash(0x007f00) # green
while True:
Timer.sleep_us(1000)
# Handle the RX packets
# TODO: refactor to use callback mechanism.
while True:
data = lora_ctl.recv()
if data:
spk.enque(data)
else:
break
# Handle the TX queue
# TODO: refactor to use Python synchronized Queue.
while pkt_tx_queue:
data = pkt_tx_queue.pop(0)
print('.')
lora_ctl.send(data)
class BatteryService(object):
def __init__(self):
self.powerPin = 0
self.adc = 0
self.Battery = 0
self.vBiasDAC = 0
def confService(self):
self.powerPin = Pin('P8', mode=Pin.OUT)
self.adc = ADC()
self.adc.vref(1058)
self.vBiasDAC = DAC('P22')
self.vBiasDAC.write(0.135) # approximately 0.5 V
self.Battery = self.adc.channel(pin='P14', attn = ADC.ATTN_11DB)
def getData(self):
self.powerPin(1)
time.sleep(0.002)
batt = self.Battery.voltage()
collectMemory()
self.powerPin(0)
return batt
def connect(self):
self.confService()
class Battery_sensor:
"""A class to handle the Battery sensor.
"""
def __init__(self):
self.adc = ADC()
self.batt = self.adc.channel(pin='P16', attn=ADC.ATTN_2_5DB)
'''
The tension is given after resistor : 56k / (56k + 115k)
So the tension range : [0 * (56/(56+115)) ; 4.1 * (56/(56+115)) ]
[0 ; 1.342]
So with attn of
2.5 dB the range of the adc is [0 ; 1.334 V]
6 dB the range of the adc is [0 ; 1.995 V]
So we need to use 2.5dB of attenuation
Table of values is [0 ; 4095] <=> [0 ; 1.334 V]
'''
def get_voltage(self, nb_values):
"""
Returns the voltage value
"""
sum = 0
for i in range(1, nb_values):
sum = sum + self.batt.value()
voltage = (sum / nb_values) * (1.334 / 4095) * (1 / (56 / (56 + 115)))
return voltage
class TMP36App():
def __init__(self, pin):
self._adc = ADC() # create ADC object
# create an analog pin on 'pin' & connect TMP36
self._adc_c = self._adc.channel(pin=pin)
self._pin = pin
self._display = None
@property
def tmp36(self):
""" return sensor/channel object"""
return self._adc_c
@property
def setDisplay(self):
return self._display
# 2019-0917 if setter is defined, you must also define a getter
@setDisplay.setter
def setDisplay(self, display=None):
""" setter for display attribute.
Example: app.setDisplay = oled """
self._display = display
def calculate_temperature(self, value):
"""calculate_temperature(value): return temperature from value."""
# LoPy has 1.1 V input range for ADC
# datasheet TMP36
# TODO: use adc_c.vRef instead of hard-coded "1100"?
return ((value * 1100) / 4096 - 500) / 10
# print data on console
def showOnConsole(self, temperature):
""" show temperature from TMP36 on console."""
msg = 'Temperature = {:5.1f}'.format(temperature)
print(msg)
# print data on attached display
def showOnDisplay(self, temperature):
""" show value from TMP36 as temperature on console."""
header = 'Temperature'
msg = '{:5.1f}'.format(temperature)
self._display.fill(0)
self._display.text(header, 0, 0)
self._display.text(msg, 0, 10)
self._display.show()
# ADC - get readings from TMP36 and display data
def showValues(self, dt=1):
while True:
value = self._adc_c() # read ADC count
temperature = self.calculate_temperature(value)
if self._display is not None:
self.showOnDisplay(temperature)
if USE_DEBUG:
self.showOnConsole(temperature)
time.sleep(dt)
def run(self, dt=10):
_thread.start_new_thread(self.showValues, (dt, ))
def __init__(self, pin):
adc = ADC(bits=12)
self.apin = adc.channel(pin=pin)
self.values = [0 for i in range(5)]
self.volt = 4200
self.chrg = 100
self.idx = 0
def _moist_sensor(testCase=None):
voltage_ref = 4.096
adc = ADC()
apin = adc.channel(pin='P15',attn=ADC.ATTN_11DB)
p_out = Pin('P9', mode = Pin.OUT, pull = Pin.PULL_DOWN)
try:
if isinstance(testCase, Exception):
raise testCase
p_out.value(1)
volts = apin.value() / voltage_ref
p_out.value(0)
except Exception as e:
return 143
if testCase is not None:
volts = testCase
if volts < 0:
return 143
if volts >= 760:
return 100
else:
perc = int((volts / 760.0) * 100)
return perc
def main():
# Use the RGB LED as an indicator of WiFi status
pycom.heartbeat(False)
wlan = WLAN()
if wlan.isconnected():
pycom.rgbled(0x000f00)
else:
pycom.rgbled(0x0f0000)
# Set up the onboard ADC and establish a channel for each thermistor
adc = ADC()
adc.vref(config.VREF_ACTUAL_IN_MILLIAMPS)
oven_channel = adc.channel(pin=config.OVEN_THERM_ADC_PIN, attn=ADC.ATTN_11DB)
food_channel = adc.channel(pin=config.FOOD_THERM_ADC_PIN, attn=ADC.ATTN_11DB)
# Modify config.py with your thermistor values from the datasheet
oven = Thermistor(oven_channel,
config.THERM_NOMINAL_TEMP,
config.THERM_NOMINAL_RES,
config.THERM_BETA,
config.SERIES_RESISTOR_1,
12.0)
food = Thermistor(food_channel,
config.THERM_NOMINAL_TEMP,
config.THERM_NOMINAL_RES,
config.THERM_BETA,
config.SERIES_RESISTOR_2,
12.0)
dinner_tracker = LosantDinnerTracker(oven, food, status_led=config.STATUS_LED_PIN)
dinner_tracker.start()
def __init__(self, air_voltage, water_voltage, p_analog_id):
self.air_voltage = air_voltage
self.water_voltage = water_voltage
adc = ADC() # create an ADC object
self.p_analog = adc.channel(pin=p_analog_id,
attn=ADC.ATTN_11DB) # create an analog pin
def voltage():
volts = 0
from machine import ADC
adc = ADC()
vpin = adc.channel(pin='P13')
for i in range(0, 999):
volts += vpin.voltage() / 0.24444 / 1000
return volts / i
def start(self):
try:
from machine import ADC
adc = ADC()
self.channel = adc.channel(pin=self.pins['adc_in'], attn=ADC.ATTN_11DB)
#p_out = Pin('P9', mode=Pin.OUT, pull=Pin.PULL_DOWN)
except Exception as ex:
log.exception('ADC hardware driver failed')
raise
def tensionBatterie():
adc = ADC()
batt = adc.channel(
attn=c.attn, pin=c.pinBatt
) # attenuation = 1, correspond à 3dB: gamme 0-1412 mV, pont diviseur (115k et 56k) sur expansion board V2.1A de 3.05, ADC 12 bits : 4096
v = batt.value()
if v == c.resolutionADC - 1:
v = -1
v = int(v * c.range / c.resolutionADC * c.coeff_pont_div) #mV
return v
def moist_sensor(p_in, p_out):
adc = ADC()
apin = adc.channel(pin=p_in, attn=ADC.ATTN_11DB)
p_out = Pin(p_out, mode=Pin.OUT, pull=Pin.PULL_DOWN)
p_out.value(1)
time.sleep(2)
volts = apin.value()
p_out.value(0)
time.sleep(2)
return volts
def __init__(self, pin_rx, pin_am):
super(MB7092, self).__init__()
# pin to enable/disable measurement
self.rx = Pin('P' + str(pin_rx), mode=Pin.OUT)
self.rx(1)
# setting up the Analog/Digital Converter with 10 bits
adc = ADC()
# create an analog pin on P16 for the ultrasonic sensor
self.am = adc.channel(pin='P' + str(pin_am))
def __init__(self, bat_pin='P16', bat_capacity=1000):
self.bat_capacity = bat_capacity
#Configure ADC for battery voltage sensing
adc = ADC()
#Configure 2.5dB attenuator to be able to capture full range of battery
#voltages
self.bat_adc = adc.channel(pin=bat_pin, attn=ADC.ATTN_2_5DB)
#Battery voltage is sensed through a voltage divider with
#115kOhm and 56kOhm, such that V_ADC = V_batt * 56/(115+56)
self.a = 171.0 / 56.0
def adc():
adc = ADC()
adc.init(bits=12)
#adc_c = adc.channel(pin='P13',attn=ADC.ATTN_11DB) #ADC pin input range is 0-3.3V with 11DB.
adc_c = adc.channel(pin='P13') #ADC pin input range is 0-1.1V.
for cycles in range(10): # stop after 10 cycles
#pycom.rgbled(0x007f00) # green
Vx= adc_c.value()
#pycom.rgbled(0x7f7f00) # yellow
print("ADC value:", Vx)
time.sleep(1)
adc.deinit()
return Vx
def __init__(self, sda="P3", scl="P4", als="P20", frequency=1, mode=0, debug=0):
if not (mode == 0 or mode == 1):
self.__exitError("Please initialize this module in either mode 0 or mode 1.")
self.mode = mode
self.rtc = RTC()
self.debug = debug
self.wlan = WLAN(mode=WLAN.STA)
self.UDPactive = False
self.loraActive = False
if (mode == 0):
adc = ADC()
self.bme280 = bme280.BME280(i2c=I2C(pins=(sda, scl)))
self.l_pin = adc.channel(pin=als)
self.frequency = frequency
def getBatVoltage():
global adc_bat
if adc_bat == None:
global config, MyConfig
if not 'accuPin' in config.keys():
accuPin = 'P17'
try: from Config import accuPin
except: pass
MyConfig.dump('accuPin',accuPin); config['accupin'] = accuPin
else: accuPin = config['accuPin']
from machine import ADC
adc = ADC(0)
adc_bat = adc.channel(pin=accuPin, attn=ADC.ATTN_11DB)
return adc_bat.value()*0.004271845
class AnalogSensor:
def __init__(self, pin, attn=ADC.ATTN_0DB, vref=3300):
global analog_counter
self.pin = pin
self.adc = ADC(analog_counter)
self.adc.vref(vref)
self.adc_channel = self.adc.channel(pin=pin, attn=attn)
analog_counter += 1
def read(self):
self.adc_channel()
value = self.adc_channel.value()
return value
def get_batt_mV():
numADCreadings = const(100)
adc = ADC(0)
adcread = adc.channel(pin='P16')
samplesADC = [0.0]*numADCreadings; meanADC = 0.0
i = 0
while (i < numADCreadings):
adcint = adcread()
samplesADC[i] = adcint
meanADC += adcint
i += 1
meanADC /= numADCreadings
mV = ((meanADC*1100/4096)*(680+100)/100)
mV_int = int(mV)
return mV_int
def get_battery_voltage(show=0):
"""
typedef enum {
ADC_ATTEN_0DB = 0,
ADC_ATTEN_3DB, // 1
ADC_ATTEN_6DB, // 2
ADC_ATTEN_12DB, // 3
ADC_ATTEN_MAX, // 4
} adc_atten_t;
"""
number_of_adc_readings = const(100)
adc = ADC(0)
adcread = adc.channel(attn=2, pin='P19')
samples_adc = [0.0] * number_of_adc_readings
mean_adc = 0.0
i = 0
while i < number_of_adc_readings:
adcint = adcread()
samples_adc[i] = adcint
mean_adc += adcint
i += 1
mean_adc /= number_of_adc_readings
variance_adc = 0.0
for adcint in samples_adc:
variance_adc += (adcint - mean_adc)**2
variance_adc /= (number_of_adc_readings - 1)
vbatt = ((mean_adc / 3) * 1400 / 1024) * 171 / (
56 * 1000) # Vbatt=Vmeasure*((115+56)/56)
if show:
print("%u ADC readings :\n%s" %
(number_of_adc_readings, str(samples_adc)))
print("Mean of ADC readings (0-4095) = %15.13f" % mean_adc)
print("Mean of ADC readings (0-1846 mV) = %15.13f" %
(mean_adc * 1846 / 4096)) # Calibrated manually
print("Variance of ADC readings = %15.13f" % variance_adc)
print("Standard Deviation of ADC readings = %15.13f" %
sqrt(variance_adc))
if mean_adc:
print("10**6*Variance/(Mean**2) of ADC readings = %15.13f" %
((variance_adc * 10**6) // (mean_adc**2)))
else:
print("10**6*Variance/(Mean**2) of ADC readings = %15.13f" %
mean_adc)
print("Battery voltage = %15.13f" % vbatt)
return vbatt
class MQ131:
#Sensor datasheet has a graphical representation of ppm of gas by Rs/R0. By obtaining this ratio and using the graphical funcion one can obtain the gas density in ppm
#Rs is the resistance of the sensor that changes depending on the concentration of gas
#R0 is the resistance of the sensor at a know concentration without the presence of gases (fresh air)
#Rs/R0 of fresh air is 1 so R0=Rs/1
#2 points of the gas function are selected (1.2 at 10ppm) and (8 at 1000ppm)
#another point is used to find the intersect (6 at 500ppm)
READ_SAMPLE_INTERVAL = const(500)
READ_SAMPLE_TIMES = const(10)
def __init__(self, pin, R0):
self.pin = pin
self.R0 = R0
self.adc = ADC(bits=12)
self.adc.vref_to_pin('P22')
self.apin = self.adc.channel(pin=self.pin, attn=ADC.ATTN_11DB)
def deinit(self):
self.apin.deinit()
self.adc.deinit()
def MQRead(self):
v=float(0)
for i in range(READ_SAMPLE_TIMES):
v += self.apin()
sleep(READ_SAMPLE_INTERVAL/1000)
return ((v/READ_SAMPLE_TIMES)*3.3/4096) #3.3v - ATTN_11DB & 4096 - 12bits
def MQCalibrate_R0(self, volts):
#Rs = (Vc * RL)/VRL - RL
if (volts==0):
return 0
RS_air = ((5.0*10.0)/volts)-10.0
R0_air = RS_air/1 #from graph, needs to be replaced with real data
return R0_air
def MQGet_PPB(self, volts):
if (volts==0):
return 0
Rs = ((5.0*10.0)/volts)-10.0
m=AdvMath.log10(1.2/10)/AdvMath.log10(8/1000)
b=AdvMath.log10(6)-(m*AdvMath.log10(500))
if (Rs==0):
return 0
return pow(10,(((AdvMath.log10(Rs/self.R0))-b)/m))
class Actility:
def __init__(self, activation=LoRa.OTAA, adr=False):
self.lora = LoRa(mode=LoRa.LORAWAN, adr=adr)
self.activation = activation
self._join()
self.s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
self.s.setsockopt(socket.SOL_LORA, socket.SO_DR, 3)
self.s.setsockopt(socket.SOL_LORA, socket.SO_CONFIRMED, False)
self.s.setblocking(False)
self.adc = ADC()
self.adc_c = self.adc.channel(pin='P13')
def _join(self):
if self.activation == LoRa.OTAA:
dev_eui = binascii.unhexlify(DEV_EUI.replace(' ', ''))
app_eui = binascii.unhexlify(APP_EUI.replace(' ', ''))
app_key = binascii.unhexlify(APP_KEY.replace(' ', ''))
self.lora.join(activation=LoRa.OTAA,
auth=(dev_eui, app_eui, app_key),
timeout=0)
else:
dev_addr = struct.unpack(
">l", binascii.unhexlify(DEV_ADDR.replace(' ', '')))[0]
nwk_swkey = binascii.unhexlify(NWK_SWKEY.replace(' ', ''))
app_swkey = binascii.unhexlify(APP_SWKEY.replace(' ', ''))
self.lora.join(activation=LoRa.ABP,
auth=(dev_addr, nwk_swkey, app_swkey))
# wait until the module has joined the network
while not self.lora.has_joined():
time.sleep(5)
print("Joining...")
print("Network joined!")
def run(self):
while True:
time.sleep(10)
tx_data = '%d' % self.adc_c()
print('Sending', tx_data)
self.s.send(tx_data)
def adc_battery():
# initialise adc hardware
adc = ADC(0)
#create an object to sample ADC on pin 16 with attenuation of 11db (config 3)
adc_c = adc.channel(attn=3, pin='P16')
# initialise the list
adc_samples = []
# take 100 samples and append them into the list
for count in range(100):
adc_samples.append(int(adc_c()))
# sort the list
adc_samples = sorted(adc_samples)
# take the center list row value (median average)
adc_median = adc_samples[int(len(adc_samples) / 2)]
# apply the function to scale to volts
adc_median = adc_median * 2 / 4095 / 0.3275
print(adc_samples)
return adc_median
class WaterSensor:
def __init__(self, pin='P17'):
self.adc = ADC()
self.pin = self.adc.channel(pin=pin, attn=ADC.ATTN_11DB)
self.data = []
def read(self, measurementAvg=10):
avg = 0
if measurementAvg <= 0:
return -1
for x in range(0, measurementAvg):
avg += self.pin.value()
avg = int(avg / measurementAvg)
self.data.append(avg)
return avg
def audio_loopback():
def handle_audio(data):
spk.enque(data)
int_mode = False
spk = speaker.Speaker(DAC('P22'), int_mode=int_mode, debug=False)
adc = ADC()
apin = adc.channel(pin='P13', attn=ADC.ATTN_11DB)
uphone = microphone.Microphone(apin, handle_audio, int_mode=int_mode)
tlk_btn = talk_button.TalkButton(uphone)
print('Audio playpack ...')
flash(0x000010) # Dark blue
while True:
if int_mode:
Timer.sleep_us(1000000)
else:
uphone.loop()
spk.loop()
def getTemperature(): global ADC_PIN_TMP36 global T_MAX_MV global V_TO_MV global ADC_MAX_VAL global PRECISION_SCALE global OFFSET_MV global SCALE_FACTOR adc_tmp36 = ADC(0) apin_tmp36 = adc_tmp36.channel(pin=ADC_PIN_TMP36) rawTemp = 0 for x in range(0, 100): adc_value = apin_tmp36.value() # read value (0~1024) then converted in mV then scaled to get more precision tMV = adc_value * (T_MAX_MV / ADC_MAX_VAL)* PRECISION_SCALE # convert th mV received to temperature rawTemp += (tMV - OFFSET_MV) / 10 return (rawTemp/100)
def status():
import machine
from machine import ADC
adc = ADC(0)
adcread = adc.channel(attn=3, pin='P16')
samplesADC = [0.0] * numADCreadings
meanADC = 0.0
count = 0
while (count < numADCreadings):
adcint = adcread()
samplesADC[count] = adcint
meanADC += adcint
count += 1
meanADC /= numADCreadings
varianceADC = 0.0
for adcint in samplesADC:
varianceADC += (adcint - meanADC)**2
varianceADC /= (numADCreadings - 1)
mV = meanADC * 1400 / 1024
return mV
class ADCCLASS:
def __init__(self, readPin, N):
self.N = N # Number of readings per measure
self.adc = ADC() # Call the constructor
self.readPin = self.adc.channel(
pin=readPin, attn=ADC.ATTN_11DB) # Assign the analog pin
# Allocate memory for some relevant variables
self.value = 0 # ADC counts
self.stdDev = 0 # Standard deviation of N readings
self.voltage = 0 # Voltage
self.deltaV = 0 # Voltage's Standard deviation
def measure(self, vBias):
# Compute value as the mean of N readings
measureSum = 0
measureSum2 = 0
for i in range(self.N):
measure = self.readPin()
measureSum += measure # Accumulate readings
measureSum2 += measure * measure
sleep_us(
200
) # Wait 200 us before reading the next value (ESP32's ADC has a sampling rate of 6 KHz)
self.value = measureSum / self.N # Compute the mean
self.stdDev = sqrt((measureSum2 / self.N) - (self.value * self.value))
# Compute voltage according to the ADC's transfer curve and bias voltage
self.voltage = ADCCLASS.__countsToVolts(self.value) - vBias # [V]
self.deltaV = self.stdDev * self.voltage / self.value # [V]
# Print results
# print('Value: {:4.3f}'.format(self.value, self.stdDev))
# print('Voltage: {:1.3f} +- {:1.3f}'.format(self.voltage, self.deltaV))
# Function that computes a voltage from ADC counts
def __countsToVolts(counts):
return ((counts + 164.059) / 1249.436) # [V]
class Battery(object):
"""
Expansion board has battery on GP3
The ADC measures between 0-1.4V
It is 12bit (0-4095)
It is measuring off a 56k/(56k+115k) voltage divider - 0.32
"""
MINIMUM = 3180 # 3.64V measured
CHARGED = 3600 # Using 4.15V
RANGE = (CHARGED - MINIMUM)
def __init__(self):
self.adc = ADC()
self.battery_raw = self.adc.channel(pin='GP3')
def __del__(self):
self.battery_raw.deinit()
self.adc.deinit()
def safe(self):
"""
Is battery at operating voltage?
:return: True/False
"""
return self.battery_raw() >= Battery.MINIMUM
def value(self):
"""
Battery percentage
:return: 0-100
"""
val = (self.battery_raw() - Battery.MINIMUM) * 100
val = val // Battery.RANGE
if val > 100:
val = 100
if val < 0:
val = 0
return val
def GetBattVolt():
adc = ADC(0)
BattVol = adc.channel(pin='P15', attn=3) # create an analog pin on P16
realVoltage = 0
# Average Count
ADCCnt = 75
for idx in range(ADCCnt):
realVoltage += BattVol.value()
print(BattVol())
time.sleep_ms(50)
realVoltage = realVoltage / ADCCnt
realVoltage = (realVoltage * 200) / 100
realVoltage = realVoltage * 4.25 # Linear scaling (was 3.35)
realVoltage = realVoltage / 4096
print("Real Voltage is " + str(realVoltage))
Level = 0
if(realVoltage >= 3.8):
Level = 6
elif(realVoltage >= 3.7 and realVoltage < 3.8):
Level = 5
elif(realVoltage >= 3.6 and realVoltage < 3.7):
Level = 4
elif(realVoltage >= 3.5 and realVoltage < 3.6):
Level = 3
elif(realVoltage >= 3.4 and realVoltage < 3.5):
Level = 2
elif(realVoltage >= 3.0 and realVoltage < 3.4):
Level = 1
return Level, realVoltage
class SEN0219:
#Sensor datasheet has a graphical representation of ppm of gas by V in a linear function. By using the graphical funcion one can obtain the gas density in ppm
#2 points of the gas function are used to find the slope of the linear function (2V at 5000ppm) and (0.4 at 0ppm)
#To Calibrate the Sensor by Hardware, one should place it in a CO2 free enviroment and then wire to ground both pin 8 and 20 of the Sensor for 7 seconds
#To Calibrate the Sensor by Software, one should place it in a enviroment close to average CO2 (400ppm), measure the voltage output, and use that value as R0
READ_SAMPLE_INTERVAL = const(500)
READ_SAMPLE_TIMES = const(10)
def __init__(self, pin, offset):
self.pin = pin
self.offset = offset
self.adc = ADC(bits=12)
self.apin = self.adc.channel(pin=self.pin, attn=ADC.ATTN_11DB)
def deinit(self):
self.apin.deinit()
self.adc.deinit()
def SENRead(self):
v=float(0)
for i in range(READ_SAMPLE_TIMES):
v += self.apin()
sleep(READ_SAMPLE_INTERVAL/1000)
return ((v/READ_SAMPLE_TIMES)*3.3/4096) #3.3v - ATTN_11DB & 4096 - 12bits
def SENCalibrate_offset(self, volts):
# 0,528V -> 400 ppm
if (volts<=0.528):
return 0
offset = (((volts-0.4)*5000)/1.6) - 400
return offset
def SENGet_PPM(self, volts):
if (volts<=0.4):
return False
ppm=(((volts-0.4)*5000)/1.6)-self.offset #0.4 = Zero & (5000-0)/(2-0.4) = Linear Function
return ppm
class ISTFS7:
n = 0.46
k = 0.5905
Uo = 2.1612
def __init__(self, pin: str):
self.adc = ADC()
self.apin = self.adc.channel(pin=pin, attn=ADC.ATTN_11DB)
def _get_pin_voltage(self) -> float:
try:
return self.apin.voltage() / 1000
except Exception as e:
return 0
def _velocity(self) -> float:
try:
U = self._get_pin_voltage()
num = ((U - self.Uo) * (U + self.Uo))**(1 / self.n)
den = ((self.k)**(1 / self.n)) * ((self.Uo)**(2 / self.n))
return abs(num) / den
except Exception as e:
return 0
def get_measurement(self) -> dict:
try:
return {
"velocity": round(self._velocity(), 3),
"velocity_unit": "m/s"
}
except Exception as e:
return {"velocity": 0.0, "velocity_unit": "m/s"}
def __init__(self, pin_name):
adc = ADC()
self.pin = adc.channel(pin=pin_name, attn=ADC.ATTN_11DB, bits=12)
self.threshold = None
adc_pin = 'GP5'
adc_channel = 3
elif 'WiPy' in mch:
adc_pin = 'GP3'
adc_channel = 1
else:
raise Exception('Board not supported!')
adc = ADC(0)
print(adc)
adc = ADC()
print(adc)
adc = ADC(0, bits=12)
print(adc)
apin = adc.channel(adc_channel)
print(apin)
apin = adc.channel(id=adc_channel)
print(apin)
apin = adc.channel(adc_channel, pin=adc_pin)
print(apin)
apin = adc.channel(id=adc_channel, pin=adc_pin)
print(apin)
print(apin.value() > 3000)
print(apin() > 3000)
# de-init must work
apin.deinit()
print(apin)
class DAQ_Unit(object):
def __init__(self):#, freqVal=10000, numpnts = 1000):
if RDB.ping():
self.daqDict = pullRedisJson(RDB, DAQPARAMKEY)
gc.collect()
else:
self.daqDict = DAQPARAMS
self.setDaqParams()
self.curPos = 0
self.setupADC()
self.setupTimer()
def updateDaqParams(self):
if RDB.ping():
self.daqDict = pullRedisJson(RDB, DAQPARAMKEY)
gc.collect()
else:
print("Redis DAQ Param Pull Failed\n\tReverting to defaults...")
self.setDaqParams()
def setDaqParams(self):
self.gpw = self.daqDict['gpw']
self.numPnts = self.daqDict['numPnts']
self.acqSpeed = self.daqDict['acqSpeed']
self.freq = self.daqDict['freq']#40000#1//(self.acqSpeed*1000)#acqSpeed is in microseconds
self.acqType = self.daqDict['acqType']
self.numAves = self.daqDict['numAves']
self.multiplexParam = self.daqDict['multiplexParam']
self.dataArray = array.array('H', range(self.numPnts))#initialize data array
self.dataID = uniqid()
self.daqDict['dataCode'] = self.dataID
self.filePath = self.dataID+'.txt'
self.daqDict['filePath'] = self.filePath
self.daqDict['data'] = self.dataArray
gc.collect()
def pushData(self, writeSD = False):
t = time.time()
RDB.rpush(self.dataID, self.dataID)
RDB.rpush(self.dataID, self.numPnts)
RDB.rpush(self.dataID, self.numAves)
RDB.rpush(self.dataID, self.gpw)
RDB.rpush(self.dataID, self.acqSpeed)
RDB.rpush(self.dataID, self.freq)
RDB.rpush(self.dataID, self.filePath)
RDB.rpush(self.dataID, self.acqType)
RDB.rpush(self.dataID, self.multiplexParam)
print(time.time()-t)
j = 0#Break and send data (Not optimum but better than one by one)
for i in range(1+len(self.dataArray)//INDEXVAL):
RDB.rpush(self.dataID, str(self.dataArray[j:j+INDEXVAL]))
j+=INDEXVAL
RDB.rpush('activeData', self.dataID)
if writeSD:
self.writeData()
gc.collect()
print("Push Time")
t = time.time()-t
print(t)
def stopTimer(self):
self.tim.deinit()
def setupTimer(self):
'''
Need to look at the following:
But how to average? (Do we need two buffers)
http://docs.micropython.org/en/latest/pyboard/library/pyb.ADC.html
'''
#How to stop timer?
self.tim = Timer(0, mode = Timer.PERIODIC, width = 32)#what is this width? Timer resolution?
self.timChannel = self.tim.channel(Timer.A, freq = self.freq)
#What is the function of the trigger, do we need to implement external vs internal?
self.timChannel.irq(handler=self._addData_, trigger = Timer.TIMEOUT)
def setupADC(self):
self.adc = ADC()
self.adcPin = self.adc.channel(pin = 'GP3')
def _addData_(self, timer, saveData = False):
self.dataArray[self.curPos] = self.adcPin()
self.curPos+=1
self.curPos%=self.numPnts#this value can ultimately help us with the number of aves.
def writeData(self):
t = time.time()
curDir = os.getcwd()
os.chdir("/sd")#change directory to SD card
try:
f = open(self.filePath, 'w')
# json.dump(self.daqDict, f)#assumes the data has already been converted to a string-Redis doesn't like arrays
f.write("%s\n"%self.dataID)
f.write("%s\n"%str(self.numPnts))
f.write("%s\n"%str(self.numAves))
f.write("%s\n"%str(self.gpw))
f.write("%s\n"%str(self.acqSpeed))
f.write("%s\n"%str(self.freq))
f.write("%s\n"%self.filePath)
f.write("%s\n"%str(self.acqType))
f.write("%s\n"%str(self.multiplexParam))
for d in self.dataArray:
f.write("%s,\n"%str(d))
f.close()
os.chdir(curDir)
except:
os.chdir(curDir)
print("Saving to %s failed"%fileName)
gc.collect()
print("Write Time: %s"%(time.time()-t))
from machine import ADC
import time
adc = ADC(0)
adc_c = adc.channel(pin='P13')
while True:
value = adc_c.value()
print("ADC value:" + str(value))
time.sleep(1)
rtclock = RTC()
clock_adjust()
# set the regex for the uart answers
re = ure.compile("\r\nOK\r\n")
er = ure.compile("\r\nERROR\r\n")
# config the uart and see if somethings answers
uart = UART(1, baudrate=115200, pins=(TX_PIN, RX_PIN)) # uart #, baudrate, pins tx,rx
uart.write('+++')
uart.write('AT+COPS?\r\n')
time.sleep(1)
while uart.any() != 0:
print(uart.readall())
# get the battery
adc = ADC()
bat = adc.channel(pin=BAT_PIN)
# initialize Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH, server=BLYNK_SERVER)
# register virtual pin 4 (the button on the blynk that sends the temp sms right away)
blynk.add_virtual_pin(4, write=v4_write_handler)
# register my task
blynk.set_user_task(sendData, 60000)
# start Blynk (this call should never return)
blynk.run()