def update(self):
#print "updating sonar"
pi.digital_write(self.trig, 1)
t.sleep(0.00001)
pi.digital_write(self.trig, 0)
start = t.time()
test = start
while pi.digital_read(self.echo) == 0:
start = t.time()
if test + .15 > t.time():
end = -1
print "failure"
self.value = -1
return
end = start
while pi.digital_read(self.echo) == 1:
end = t.time()
if end > start + .15:
end = -1
print "failure to get distance"
self.value = -1
return
#t.sleep(.0001)
timing = end - start
self.value = (timing*340.29)
print "done"
pi.digital_write(self.trig, 0)
def update(self):
self.value = pi.digital_read(self.pin)
def update(self):
self.value = pi.digital_read(self.pin)
