Stop thread instantly

[Ivan219]

Hello, I do program with two threads:

Code: Select all

 while True:
     input_state = GPIO.input(GPIO_but)
     if (input_state == True):
         print('Button Pressed')
         if (ways==1):
             ways=2
             w1.stop()//python hasn't this function
             w2.start()
         else:
             ways=1
             w2.stop()//python hasn't this function
             w1.start()
         time.sleep(1)

I have two ways flashing LEDs, in this ways functions I use time.sleep function, how stop thread instantly? I want to stop w1 and start w2 without waiting time.sleep in w1. How I can do this?

[Ivan219]

Any ideas?

[joan]

What two threads? Are you sure you are using threads?

[Ivan219]

Yes, I use threads, but I don't know is it solution ot not, my task: I have three leds and two mode, I want to change mode with button, when I press button - mode change, but in modes I use time.sleep(), how change mode instantly? After press button.

[PiGraham]

You could have the threads running all the time and testing your ways variable so that one does it's thing when ways == 1 and the other does its thing when ways==2.
Do many small sleeps to make it more responsive. If you Sleep(0.1) and count ten iterations you have one second but respond to a change of control within 100ms. You can also use time functions to change state when 1 second has elapsed.
It's good practice to make your threads clean up for themselves and self-terminate.