def thread(self, args):
ALERT_FLAG = 0
while True:
self.trigger_pin.write(0)
time.sleep(0.000002) # 2 microseconds
self.trigger_pin.write(1)
time.sleep(0.00001) # 10 microseconds
self.trigger_pin.write(0)
duration = pulsein.pulseIn(self.echo_pin) # microseconds
ultrasonic_value.value = self.initial_value - (duration / self.conv_ratio) # distance
if ultrasonic_value.value >= MAX_WATER:
if ALERT_FLAG == 0:
ALERT_FLAG = 1
print "ALERT UP!!!!!!!!!"
database.insertAlert(datetime.now(), NODE, ALERT_FLAG)
else:
if ALERT_FLAG == 1:
ALERT_FLAG = 0
print "ALERT DOWM!!!!!!!"
database.insertAlert(datetime.now(), NODE, ALERT_FLAG)
if ultrasonic_value.value >= self.max_range or ultrasonic_value.value <= self.min_range:
print "Out of range {0}".format(ultrasonic_value.value)
ultrasonic_value.value = -1
else:
print "Distance: {0} cm".format(ultrasonic_value.value)
time.sleep(DELTAT_ULTRA)
def read_avg(self):
duration = 0
for i in range(0, SAMPLE_RATE):
self.trigger_pin.write(0)
time.sleep(0.000002) #2 microseconds
self.trigger_pin.write(1)
time.sleep(0.00001) #10 microseconds
self.trigger_pin.write(0)
duration = duration + pulsein.pulseIn(self.echo_pin) # microseconds
return (duration / SAMPLE_RATE)
def thread(self, args):
while True:
self.trigger_pin.write(0)
time.sleep(0.000002) #2 microseconds
self.trigger_pin.write(1)
time.sleep(0.00001) #10 microseconds
self.trigger_pin.write(0)
duration = pulsein.pulseIn(self.echo_pin) # microseconds
ultrasonic_value.value = self.initial_value - (duration / self.conv_ratio) # distance
if ultrasonic_value.value >= self.max_range or \
ultrasonic_value.value <= self.min_range :
print "Out of range {0}".format(ultrasonic_value.value)
ultrasonic_value.value = -1
else :
print "Distance: {0} cm".format(ultrasonic_value.value)
time.sleep(0.2)
def thread(self, args):
ALERT_FLAG = 0
lcd.color_semaphore(0)
print "Entering thread"
while True:
self.trigger_pin.write(0)
time.sleep(0.000002) #2 microseconds
self.trigger_pin.write(1)
time.sleep(0.00001) #10 microseconds
self.trigger_pin.write(0)
duration = pulsein.pulseIn(self.echo_pin) # microseconds
# duration = self.read_avg()
ultrasonic_value.value = self.initial_value - (duration / self.conv_ratio) # distance
print "Duration {0}".format(duration)
if ultrasonic_value.value >= MAX_WATER + ERROR :
if ALERT_FLAG == 0:
ALERT_FLAG = 1
print 'ALERT UP!!!!!!!!!'
database.insertAlert(datetime.now(), NODE, ALERT_FLAG)
try:
lcd.color_semaphore(1)
twitt.tweet_place("Ooops! Flood detected: {0:.2f} cm".format(ultrasonic_value.value),
twitt.lat, twitt.lon)
except Exception as e:
print 'Cannot send twitt', e
elif ultrasonic_value.value > 0 and ultrasonic_value.value < MAX_WATER - ERROR:
if ALERT_FLAG == 1:
ALERT_FLAG = 0
print 'ALERT DOWM!!!!!!!'
database.insertAlert(datetime.now(), NODE ,ALERT_FLAG)
try:
lcd.color_semaphore(0)
twitt.tweet_place("Yeii! Level fell to {0:.2f} cm".format(ultrasonic_value.value),
twitt.lat, twitt.lon)
except Exception as e:
print 'Cannot send twitt', e
if ultrasonic_value.value >= self.max_range or \
ultrasonic_value.value <= self.min_range :
print "Out of range {0}".format(ultrasonic_value.value)
ultrasonic_value.value = -1
else :
print "Distance: {0} cm".format(ultrasonic_value.value)
time.sleep(DELTAT_ULTRA)