teasense/temperato.py

# temperato.py - Driver of querying service
# Copyright (C) 2021  William R. Moore <william@nerderium.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program.  If not, see <https://www.gnu.org/licenses/>.

import board
import digitalio
import adafruit_max31865
import requests
import threading
import time
import os
import json
from dotenv import load_dotenv

load_dotenv()

set_point = float(os.environ.get('SET_POINT'))
sleep_timer = 1
tick_threshold = 5
spi = board.SPI()
cs = digitalio.DigitalInOut(getattr(board,os.environ.get('INPUT_PIN')))
sensor = adafruit_max31865.MAX31865(spi, cs, wires=3)

class tempThread (threading.Thread):
    def run(self):
        ticks = 0
        while True:
            temp = sensor.temperature
            if temp >= set_point:
                ticks += 1
            else:
                ticks = 0

            if ticks == tick_threshold:
                ticks = 0
                print(requests.post(os.environ.get('NOTIF_URL'), json={'message': os.environ.get('MESSAGE')}))
            time.sleep(sleep_timer)

T_thread = tempThread()

T_thread.start()

T_thread.join()