def update_reference_distance(): ttg.blink_both() d = ttg.get_distance() time.sleep(0.2) d += ttg.get_distance() time.sleep(0.2) d += ttg.get_distance() m = d/3 return m
# main loop
while True:
# Check if user has pressed the shutdown button
if shutdown_request:
ttg.clean()
subprocess.call(["shutdown", "-h", "now"])
# Update reference distanc if requested
if memorize_request:
m = update_reference_distance()
memorize_request = False
# Get distance from ultrasonic sensor
d = ttg.get_distance()
b = eqdistance(d, m)
ttrest.ttwrite('Distance',str(d))
# State 0 is listening for a distance lecture out of
# range. Once found, it will initialize some data for the
# sate 1.
if state == 0:
print "i'm on state 0"
if not b:
state = 1
samp_neg = 0 # negative samples
samp_total = 0
# On State 1, we will collect some more samples and then
# calculate an average of positives vs negatives. Regarding
# the result, we will go back or forward.