라즈베리 파이에서 알람시간을 파이썬으로 코딩중인데 while문 작성이 너무 힘들네요. 어디가 잘못 된건지 설명부탁 드립니다 .

import time

import datetime

from grovepi import*

import math

buzzer_pin =2

button=4

pinMode(buzzer_pin,"OUTPUT")

pinMode(button,"INPUT")



c=int(input("Enter the hour you want to wake up at :"))

d=int(input("Enter the minutes you want to wake up at :"))

b=int(input("Enter the seconds you want to wake up at :"))

now= datetime.datetime.now()



h=now.strftime('%H')

h1=now.strftime('%M')

h2=now.strftime('%S')

while h==c and h1==d and h2>=b:

    h==c and h1==d and h2<=b

    digitalWrite(buzzer_pin,1)

    button_status = digitalRead(button)

    if button_status :  

        digitalWrite(buzzer_pin,0)