from machine import Pin 
import time
trig =Pin(18,Pin.OUT ,value=0)
echo=Pin(17,Pin.IN)
relayIN=Pin(23,Pin.OUT,value=0)
relayOUT=Pin(23,Pin.OUT,value=0)
buttonsystem=Pin(12,Pin.IN)
Ton = Toff = 0
while 1 :
    while buttonsystem.value()==1:
        reading=buttonsystem.value()
        if reading==0:
            break
        trig.on()
        time.sleep_us(10)
        trig.off()

        while echo.value() == 0 :
            Toff = time.ticks_us()
        while echo.value() == 1 :
            Ton = time.tichs_us()
         t= (Ton-Toff) / 2

        distance = int((0.034*t))
        water=300-(distance-100)
        print('distance is : ',distance)
        print('water is : ',water)
        time.sleep_ms(20)
        if 100 < water < 300 :
            relayIN.on()
            relayOUT.on()
            print('loumour mrigla ')
        if water<100 :
            relayIN.on()
            relayOUT.off()
            print('rahou frag ')
        if water>300 :
            relayIN.off()
            relayOUT.on()
            print('rahou t3aba ')