#! /usr/bin/env python3
# encoding=utf-8

import RPi.GPIO as GPIO
import time
import signal
import atexit
import MySQL as m

def lock_insert(num):
    t = time.strftime('%Y-%m-%d %H:%M:%S')
    m.ms_insert(num, t, "open")

def lock_update(num):
    m.ms_update("close_state", "Y", num)
    t = time.strftime('%Y-%m-%d %H:%M:%S')
    m.ms_update("time_close", t, num)

def lock_control():
    atexit.register(GPIO.cleanup)

    num = m.ms_select("max(number)")[0][0] + 1

    servopin = 27
    GPIO.setmode(GPIO.BCM)
    GPIO.setup(servopin, GPIO.OUT, initial=False)
    p = GPIO.PWM(servopin, 50)  # 50HZ:频率就是周期脉冲的周期的倒数
    p.start(0)  # start(initdutycycle)：占空比0-100间，0表示暂不输出
    time.sleep(2)


    for i in range(0, 181, 10):
        p.ChangeDutyCycle(2.5 + 10 * i / 180)  # 设置转动角度
        time.sleep(0.02)  # 等该20ms周期结束
        p.ChangeDutyCycle(0)  # 归零信号
        time.sleep(0.2)

    lock_insert(str(num))

    time.sleep(5)

    for i in range(181, 0, -10):
        p.ChangeDutyCycle(2.5 + 10 * i / 180)
        time.sleep(0.02)
        p.ChangeDutyCycle(0)
        time.sleep(0.2)

    lock_update(str(num))

    GPIO.cleanup(servopin)