Raspberry Webiopi GPIO一次性电子邮件触发器

Question

我一直试图使这个代码，我只有一次电子邮件后，门别针已被绊倒。我是python的新手，一直在阅读有类似问题的帖子，并尝试在我的脚本中看到的东西。但似乎不能让它只发送一次电子邮件。

enter code here
import webiopi
import datetime
import smtplib
import subprocess
import os
GPIO = webiopi.GPIO

ARM = 7 # GPIO pin using BCM numbering
FLASH = 8
START = 25 # relay
DOOR = 11


HOUR_ON  = 8  # Turn Light ON at 08:00
HOUR_OFF = 18 # Turn Light OFF at 18:00



def setup():
    GPIO.setFunction(ARM, GPIO.OUT)
    GPIO.setFunction(FLASH, GPIO.OUT)
    GPIO.setFunction(START, GPIO.OUT)
    GPIO.setup(DOOR, GPIO.IN, pull_up_down=GPIO.PUD_UP)

    now = datetime.datetime.now()

    # test if we are between ON time and tun the light ON
    if ((now.hour >= HOUR_ON) and (now.hour < HOUR_OFF)):
        GPIO.digitalWrite(ARM, GPIO.HIGH)
        GPIO.digitalWrite(FLASH, GPIO.HIGH)


def loop():

    # retrieve current datetime
    now = datetime.datetime.now()

    # toggle light ON all days at the correct time
    if ((now.hour == HOUR_ON) and (now.minute == 0) and (now.second == 0)):
        if (GPIO.digitalRead(ARM) == GPIO.LOW):
            GPIO.digitalWrite(ARM, GPIO.HIGH)

    # toggle light OFF
    if ((now.hour == HOUR_OFF) and (now.minute == 0) and (now.second == 0)):
        if (GPIO.digitalRead(ARM) == GPIO.HIGH):
            GPIO.digitalWrite(ARM, GPIO.LOW)


    if (GPIO.digitalRead(ARM) == GPIO.HIGH):
        GPIO.digitalWrite(FLASH, GPIO.HIGH)
        webiopi.sleep(.5)
        GPIO.digitalWrite(FLASH, GPIO.LOW)

    if (GPIO.digitalRead(DOOR) == GPIO.HIGH):
        SendText()

    # gives CPU some time before looping again
    webiopi.sleep(1)




def SendText():
    os.system("python /home/pi/html/myemail.py")






# destroy function is called at WebIOPi shutdown
def destroy():
    GPIO.digitalWrite(ARM, GPIO.LOW)
    GPIO.digitalWrite(START, GPIO.LOW)



@webiopi.macro
def getLightHours():
    return "%d;%d" % (HOUR_ON, HOUR_OFF)

@webiopi.macro
def setLightHours(on, off):
    global HOUR_ON, HOUR_OFF
    HOUR_ON = int(on)
    HOUR_OFF = int(off)
    return getLightHours()

Answer 1

您可以设置变量send_email来跟踪是否到了发送电子邮件的时间，以及该电子邮件是否已发送。

创建一个全局变量send_email = False，因为该变量将进入循环方法并需要初始化。

添加到SendText() if语句和send_email

在SendText()行之后设置send_email = False

添加另一个if语句以检查是否为GPIO.LOW，并将send_email更改为True

我已经对您的代码进行了建议的更改。我把我添加的所有文本都用*括起来。确保从代码中删除所有的*，这样它才能工作。

import webiopi
import datetime
import smtplib
import subprocess
import os
GPIO = webiopi.GPIO

ARM = 7 # GPIO pin using BCM numbering
FLASH = 8
START = 25 # relay
DOOR = 11


HOUR_ON  = 8  # Turn Light ON at 08:00
HOUR_OFF = 18 # Turn Light OFF at 18:00


*send_email = False*
def setup():
    GPIO.setFunction(ARM, GPIO.OUT)
    GPIO.setFunction(FLASH, GPIO.OUT)
    GPIO.setFunction(START, GPIO.OUT)
    GPIO.setup(DOOR, GPIO.IN, pull_up_down=GPIO.PUD_UP)

    now = datetime.datetime.now()

    # test if we are between ON time and tun the light ON
    if ((now.hour >= HOUR_ON) and (now.hour < HOUR_OFF)):
        GPIO.digitalWrite(ARM, GPIO.HIGH)
        GPIO.digitalWrite(FLASH, GPIO.HIGH)


def loop():

    # retrieve current datetime
    now = datetime.datetime.now()

    # toggle light ON all days at the correct time
    if ((now.hour == HOUR_ON) and (now.minute == 0) and (now.second == 0)):
        if (GPIO.digitalRead(ARM) == GPIO.LOW):
            GPIO.digitalWrite(ARM, GPIO.HIGH)

    # toggle light OFF
    if ((now.hour == HOUR_OFF) and (now.minute == 0) and (now.second == 0)):
        if (GPIO.digitalRead(ARM) == GPIO.HIGH):
            GPIO.digitalWrite(ARM, GPIO.LOW)

    if (GPIO.digitalRead(ARM) == GPIO.HIGH):
        GPIO.digitalWrite(FLASH, GPIO.HIGH)
        webiopi.sleep(.5)
        GPIO.digitalWrite(FLASH, GPIO.LOW)

    if (GPIO.digitalRead(DOOR) == GPIO.HIGH) *and send_email*:
        SendText()
        *send_email = False*

    *if (GPIO.digitalRead(DOOR) == GPIO.LOW) and not send_email*:
        *send_email = True*

    # gives CPU some time before looping again
    webiopi.sleep(1)




def SendText():
    os.system("python /home/pi/html/myemail.py")






# destroy function is called at WebIOPi shutdown
def destroy():
    GPIO.digitalWrite(ARM, GPIO.LOW)
    GPIO.digitalWrite(START, GPIO.LOW)



@webiopi.macro
def getLightHours():
    return "%d;%d" % (HOUR_ON, HOUR_OFF)

@webiopi.macro
def setLightHours(on, off):
    global HOUR_ON, HOUR_OFF
    HOUR_ON = int(on)
    HOUR_OFF = int(off)
    return getLightHours()