火災報知器を炎センサーモジュールとRaspberry Piで作る

import RPi.GPIO as GPIO
import time
import requests
import subprocess
import pigpio

GPIO_INPUT = 27

GPIO.setmode(GPIO.BCM)
GPIO.setup(GPIO_INPUT, GPIO.IN)

buzzer_gpio = 17
gpio = pigpio.pi()
gpio.set_mode(buzzer_gpio, pigpio.OUTPUT)

try:
        while True:
                state = GPIO.input(GPIO_INPUT)

                if state == GPIO.LOW:
                        res = subprocess.run("sh /home/pi/fire/command.sh", shell=True)

                        while state == GPIO.LOW:
                            gpio.write(buzzer_gpio, 1)
                            time.sleep(10)
                            gpio.write(buzzer_gpio, 0)
                            state = GPIO.input(GPIO_INPUT)

                else:
                        time.sleep(3)

except KeyboardInterrupt:
        print("stopped")
        GPIO.cleanup()

# -*- coding: utf-8 -*-
#!/usr/bin/python3
# https://github.com/Thinary/AHT10/blob/master/src/Thinary_AHT10.cpp
# https://myhydropi.com/raspberry-pi-i2c-temperature-sensor
# cleaned up and documented smbus 1 and some errors
# GJ 03-2020
# i2cdetect -y 0
import smbus
import time

# Get I2C bus
#bus = smbus.SMBus(0)  # Rev 1 Pi uses 0
bus = smbus.SMBus(1) # Rev 2 Pi uses 1
# when you have a 121 IO Error, uncomment the next pause
# time.sleep(1) #wait here to avoid 121 IO Error

config = [0x08, 0x00]
bus.write_i2c_block_data(0x38, 0xE1, config)
time.sleep(0.5)
byt = bus.read_byte(0x38)
#print(byt&0x68)
MeasureCmd = [0x33, 0x00]
bus.write_i2c_block_data(0x38, 0xAC, MeasureCmd)
time.sleep(0.5)
data = bus.read_i2c_block_data(0x38,0x00)
#print(data)
temp = ((data[3] & 0x0F) << 16) | (data[4] << 8) | data[5]
ctemp = ((temp*200) / 1048576) - 50
print(u'{0:.1f}'.format(ctemp))

#!/bin/bash<br><br>sed -i -e "5d" /home/pi/fire/mailtext.txt<br>python3 /home/pi/fire/temp.py >> /home/pi/fire/mailtext.txt<br>cat /home/pi/fire/mailtext.txt | sendmail -i -t

From: [email protected]
To: [email protected]
Subject: FIRE alart!!!

XX.X

$ sudo nano firealarm.service

[Unit]
Description = fire alarm daemon

[Service]
ExecStart = python3 /home/pi/fire/fire.py
Restart = always
Type = simple

[Install]
WantedBy = multi-user.target

$ sudo systemctl daemon-reload
$ sudo systemctl enable firealarm
$ sudo systemctl start firealarm