I am trying to switch on and off the LED based on a set set_car_id
returning some value within a time interval. If the set returns some value, i want the LED to be brighter for 8 seconds. In the code shown below, once the set returns a value, the LED is switched on for 8 seconds. But, if the set returns a value at 5 second (within the 8 sec), then the LED won't be switched on till next 13 sec, it will be on for 3 more seconds and then suddenly switches off. I am showing only smaller part of the code. Any suggestions to solve?
last_bright_time = None
last_dim_time = None
new_action = -1
def LED_control(set_car_id):
global last_bright_time
global last_dim_time
curr_time = time.time()
should_remain_bright = False
should_remain_dim = False
if (new_action == 0): #new_action ==0 corresponds to set_car_id returning some value
if last_bright_time == None:
last_bright_time = time.time()
if (curr_time - last_bright_time) < 8:
should_remain_bright = True
if ((len(set_car_id) > 0) or should_remain_bright = True):
car_light(1) # function to bright the LED
last_dim_time = None
else:
car_light(0) # function to dim the LED
last_bright_time = None
Try this:
import time
while True:
brighten()
time.sleep(8)
dim()
time.sleep(8)
If you want something more precise:
import time
def sleep():
time_start = time.time()
while time.time() < time_start + 8000:
pass
while True:
brighten()
sleep()
dim()
sleep()
In the pieces of code above, you have to define the brighten
and dim
functions.
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