stm32-fmt-code/access_control_python/main.py

import cv2
import threading
import time
import face_processing as fp
from access_control import access_control
from database import database, Student, Parent

SERIAL_PORT_STM32 = "COM12"
SERIAL_PORT_DISPLAY = "COM15"
CAMERA_INDEX = 0

cam = cv2.VideoCapture(CAMERA_INDEX)
stm32 = access_control(SERIAL_PORT_STM32)

global img
global frame_ready
frame_ready = False

def read_webcam():
    global img
    global frame_ready
    while True:
        ret, img = cam.read()
        frame_ready = True

threading.Thread(target=read_webcam).start()

while True:
    while not frame_ready:
        time.sleep(1)

    #Try to identify face
    if stm32.get_scan_state():
        print("SCAN ACTIVE!")
        faces = fp.identify_face(img, target_condidence=0.6)
        if(len(faces)>0):
            print("Door Unlocked!, Locking in 5 seconds")
            stm32.unlock_door()
            time.sleep(5)
            stm32.lock_door()
            print("Door Locked!")
        print("DONE")