def load_data():
senlog.debug("Load Data:")
sensor_data = []
sensors = Sensors.query.all()
for s in sensors:
next_sensor = s.__dict__
v_data = s.valves.__dict__
c_data = s.crops.__dict__
del next_sensor["_sa_instance_state"]
senlog.debug(next_sensor)
row_data = {}
row_data["sensor_id"] = next_sensor["sensor_id"]
row_data["sensor_name"] = next_sensor["sensor_name"]
row_data["valve_id"] = next_sensor["valve_id"]
row_data["bcm_pin"] = next_sensor["bcm_pin"]
row_data["configuration"] = next_sensor["configuration"]
row_data["crop_id"] = next_sensor["crop_id"]
row_data["valve_name"] = v_data["valve_name"]
row_data["crop_name"] = c_data["crop_name"]
sensor_data.append(row_data)
# senlog.debug("Sensor Data... ")
# senlog.debug(sensor_data)
return sensor_data
def get_latest_sensor_readings(sensor_id, count):
senlog.debug("in get latest sensor readings")
readings = SensorReadings.query.filter_by(sensor_id=sensor_id).order_by(
SensorReadings.recorded_at.desc()).limit(count)
return readings
def delete_sensor(sensor_id):
sensor = db.session.query(Sensors).get(sensor_id)
del_school_return = db.session.delete(sensor)
senlog.debug("Return value ", del_school_return)
db.session.commit()
return jsonify(success=True)
def do_sensor_readings():
sensors = Sensors.query.all()
for sensor_data in sensors:
senlog.info("Next Sensor: {} {} {}".format(sensor_data.sensor_id,
sensor_data.crops.crop_name,
sensor_data.bcm_pin))
nxt_sensor = moisturemeter.MoistureMeter(sensor_data.sensor_id,
sensor_data.bcm_pin)
# senlog.debug("get kPa for : ", sensor_data.sensor_id)
sensor_reading_data = nxt_sensor.get_kpa_value()
senlog.info("Return data: ", sensor_reading_data)
if (not sensor_reading_data["data_valid"]):
senlog.error("Sensor reading returned DATA VALID as FALSE")
new_reading = SensorReadings(sensor_data.sensor_id,
sensor_reading_data)
x = datetime.datetime.now()
senlog.debug("Date:")
senlog.debug(x)
senlog.debug("New Reading")
senlog.debug(new_reading.__dict__)
db.session.add(new_reading)
db.session.commit()
def get_sensor_reading(sensor_id):
senlog.debug("IN getreading for sensor:")
senlog.debug(sensor_id)
sensor_reading_data = get_sensor_reading(sensor_id)
senlog.debug(sensor_reading_data)
return jsonify(sensor_reading_data)
def insert_data():
senlog.debug("Insert Sensor Request...")
new_sensor_data = request.json
senlog.debug(new_sensor_data)
# Create the New Sensor
senlog.debug(new_sensor_data)
new_sensor = Sensors(sensor_name=new_sensor_data["sensor_name"],
configuration=new_sensor_data["configuration"],
crop_id=new_sensor_data["crop_id"],
valve_id=new_sensor_data["valve_id"],
bcm_pin=new_sensor_data["bcm_pin"])
# def __init__(self, first_name, last_name, login_id, judging_event_id, school_id):
db.session.add(new_sensor)
db.session.commit()
ret_sensor = {
"sensor_id": new_sensor.sensor_id,
"sensor_name": new_sensor.sensor_name,
"configuration": new_sensor.configuration,
"crop_id": new_sensor.crop_id,
"valve_id": new_sensor.valve_id,
"bcm_pin": new_sensor.bcm_pin
}
return jsonify(ret_sensor)
def get_kpa_value(self):
# set up the pin for input
GPIO.setmode(GPIO.BCM) # choose BCM or BOARD
GPIO.setup(self.bcmpin, GPIO.IN,
pull_up_down=GPIO.PUD_UP) # set input pin as an
senlog.debug("GPIO Pin " + str(self.bcmpin) + " set as input")
# Set up callback for sensor input (rising edge)
senlog.debug("Begin gathering sensor data for sensor " + str(self.id) +
" " + str(self.bcmpin))
senlog.debug("self.bcmpin is %d", self.bcmpin)
state = GPIO.input(self.bcmpin)
senlog.debug("State is %s", state)
# wait for first rising edge detection
# wait for up to 5 seconds for a rising edge (timeout is in milliseconds)
channel = GPIO.wait_for_edge(self.bcmpin, GPIO.RISING, timeout=5000)
senlog.debug(channel)
if channel is None:
senlog.error('Timeout occurred')
# else:
# print('Edge detected on channel', channel)
# start timer to begin measuring
tstart = datetime.now()
# print("Time Start : ", tstart)
# sample_count = 500
sample_count = 5000
valid_data = True
for i in range(0, sample_count):
channel = GPIO.wait_for_edge(self.bcmpin,
GPIO.RISING,
timeout=5000)
channel = GPIO.wait_for_edge(self.bcmpin,
GPIO.FALLING,
timeout=5000)
if channel is None:
print('Timeout occurred, abort')
kPa = -1
valid_data = False
break
tend = datetime.now()
time_delta = tend - tstart
if (valid_data):
# print("Compute Results")
# print( time_delta.total_seconds())
avg_period = time_delta.total_seconds() / float(sample_count)
# print(avg_period)
avg_frequency = 1.0 / avg_period
# print(avg_frequency)
# print("calculated period : ", period)
kPa = self.compute_kpa(avg_frequency)
# compute some statistics that might help understand how well the system is working
min_frequency = 0.0
max_frequency = 0.0
mean = 0.0
stddev = 0.0
else:
kPa = 0.0
avg_frequency = 0.0
min_frequency = 0.0
max_frequency = 0.0
mean = 0.0
stddev = 0.0
return_data = {
"data_valid": valid_data,
"kpa_value": kPa,
"computed_frequency": avg_frequency,
"min_frequency": min_frequency,
"max_frequency": max_frequency,
"mean": mean,
"std_dev": stddev
}
senlog.debug(return_data)
# GPIO.cleanup()
return return_data
def get_sensor_readings():
senlog.debug("Sensor Readings:")
# user = request.args.get('user')
# senlog.debug(request.args)
sort_order = request.args.get('sort_order')
if sort_order is None:
sort_order = ''
# senlog.debug("Sort Order: " + sort_order)
days_to_fetch = request.args.get('days')
if days_to_fetch is None:
if (sort_order == 'desc'):
readings = SensorReadings.query.order_by(
SensorReadings.recorded_at.desc())
else:
readings = SensorReadings.query.order_by(
SensorReadings.recorded_at)
else:
filter_after = datetime.datetime.today() - datetime.timedelta(
days=int(days_to_fetch))
if (sort_order == 'desc'):
readings = SensorReadings.query.filter(
SensorReadings.recorded_at >= filter_after).order_by(
SensorReadings.recorded_at.desc())
else:
readings = SensorReadings.query.filter(
SensorReadings.recorded_at >= filter_after).order_by(
SensorReadings.recorded_at)
# payments = Payment.query.filter(Payment.due_date >= filter_after).all()
# jsonrequest = request.json
# senlog.debug("json request")
# senlog.debug(jsonrequest)
#
# if jsonrequest:
# sort_order = jsonrequest["sort_order"]
sensor_readings = []
first = True
sensors = Sensors.query.all()
sensor_data = {}
for s in sensors:
sensor_data[s.sensor_id] = s.sensor_name
senlog.debug(sensor_data)
for r in readings:
next_reading = r.__dict__
del next_reading["_sa_instance_state"]
# if (first):
# sensor = Sensors.query.get(r.sensor_id)
# first = False
# senlog.debug("Retrieved Sensor:")
# senlog.debug(sensor.__dict__)
# senlog.debug(next_reading)
if r.sensor_id in sensor_data:
rowData = next_reading
rowData["sensor_name"] = sensor_data[r.sensor_id]
sensor_readings.append(rowData)
else:
senlog.warning("Sensor ID NOT FOUND")
senlog.warning(r.sensor_id)
# senlog.debug(rowData)
# senlog.debug("Sensor Readings:")
# count = 0
# for reading in sensor_readings:
# senlog.debug(reading)
# count += 1
# if count > 50:
# break
# jsonData = jsonify(sensor_readings)
# senlog.debug(jsonData)
return jsonify(sensor_readings)
def get_data():
senlog.debug("IN getData for sensors")
return jsonify(load_data())
def update_sensor(sensor_id):
senlog.debug("UPDATE SENSOR:")
#Find item to update
jsonrequest = request.json
senlog.debug("json request")
senlog.debug(jsonrequest)
sensor = db.session.query(Sensors).get(jsonrequest["sensor_id"])
senlog.debug("Sensor to be updated:")
senlog.debug(sensor)
update = {
"sensor_name": jsonrequest["sensor_name"],
"configuration": jsonrequest["configuration"],
"crop_id": jsonrequest["crop_id"],
"valve_id": jsonrequest["valve_id"],
"bcm_pin": jsonrequest["bcm_pin"]
}
senlog.debug(update)
db.session.query(Sensors).filter_by(
sensor_id=jsonrequest["sensor_id"]).update(update)
db.session.commit()
return jsonify(request.json)
