The problem is, variable t1 is inside the loop, but I can't use it outside (because it's not defined); So the program returns "UnboundLocalError: local variable 't1' referenced before assignment". I don't know other ways to measure the time between this two events, each time the first starts (self explanatory with the code below).
if status in STATUSON:
t1 = 0
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')
t1 = time.time()
elif status in STATUSOFF and time.time() - t1 >= 5:
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')
elif status in STATUSOFF and time.time() - t1 <= 5:
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
time.sleep(2)
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')
I've used pickle to solve the problem. It can convert Python objects to a character stream, and save it, so the next loop can access this data anytime (new code below).
if status in STATUSON:
t1 = time.time()
with open('time.pickle', 'wb') as f:
pickle.dump(t1, f)
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')
elif status in STATUSOFF:
with open('time.pickle', 'rb') as f:
t1 = pickle.load(f)
if time.time() - t1 >= 15:
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
open("time.pickle", "w").close()
return statement('Ok')
elif time.time() - t1 <= 15:
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
time.sleep(2)
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')
else:
GPIO.output(17,GPIO.HIGH)
time.sleep(0.5)
GPIO.output(17,GPIO.LOW)
return statement('Ok')