#Program: Pico_Python_17interrupt.py #########
from machine import Pin
import time

#initial variables here
flag_LED1 = True
pin_LED1 = 3
pin_LED2 = 4
pin_SW1 = 2
flag_SW1 = False
count = 1;

#Here template for multi-tasking
currentTime = 0
#1000 = 1 second
task1Time = 1000 #for LED1
task2Time = 10 #for SW1
task3Time = 10 #control LED2
task4Time = 1000
task5Time = 1000

previousMillis_1 = 0
previousMillis_2 = 0
previousMillis_3 = 0
previousMillis_4 = 0
previousMillis_5 = 0

#program START here
def isr_SW1(SW1):
    global count 
    print("interrupt count = ",count)
    count +=1
    LED2.on()
    time.sleep_ms(100)
    LED2.off()

#setup here
LED1 = Pin(pin_LED1, Pin.OUT)
LED1.value(flag_LED1) #initial LED1 = ON
LED2 = Pin(pin_LED2, Pin.OUT)
LED2.value(False) #initial LED2 = OFF
SW1 = Pin(pin_SW1, Pin.IN, Pin.PULL_UP) #PULL_DOWN
SW1.irq(trigger=Pin.IRQ_FALLING, handler=isr_SW1)
#_RISING, _FALLING,
state = machine.disable_irq() #Disable the interrupt.
machine.enable_irq(state) #Enable the interrupt.

print("Hello World,","LED1&2 : ON")

#infinite loop here
while True:
  currentTime = time.ticks_ms() #or _us for microsecond

#Task 1 here
  if (currentTime - previousMillis_1) >= task1Time:
     previousMillis_1 = currentTime  
     LED1.value(flag_LED1)    
     flag_LED1 = not flag_LED1
     print("Task 1 run")

#Task 2 here
  if (currentTime - previousMillis_2) >= task2Time:
     previousMillis_2 = currentTime  

#Task 3 here
  if (currentTime - previousMillis_3) >= task3Time:
     previousMillis_3 = currentTime

#Task 4 here
  if (currentTime - previousMillis_4) >= task4Time:
     previousMillis_4 = currentTime

#Task 5 here
  if (currentTime - previousMillis_5) >= task5Time:
     previousMillis_5 = currentTime  
     
#END program here ##################