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#! /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)： ，
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 )
