Reputation: 13
I'm trying to control led lights based on its previous state using python code on my raspberry pi. Any suggestion how can I do it?
I have tried using checking gpio state using gpio.input() function, and changing variable value
GPIO.setmode(GPIO.BOARD)
GPIO.setwarnings(False)
GPIO.setup(35,GPIO.OUT)
GPIO.output(35,GPIO.HIGH)
f = '1'
while True:
time.sleep(3)
print "before"
print f
if f == '1':
GPIO.output(35,GPIO.HIGH)
f = '0'
if f == '0':
GPIO.output(35,GPIO.LOW)
f = '1'
print "after"
print f
time.sleep(3)
I expect to turn off light if it is in on condition and vice-versa
Upvotes: 0
Views: 125
Reputation: 16951
Your code is changing f
from 1
to 0
and then immediately changing it back again, so your code is working, but it switches the light off so quickly again you don't see it.
Change this line
if f == '0':
to
elif f == '0':
Upvotes: 1