Read from DHT22 and submit to edgex-device-rest

dht22.py

# Original script from https://learn.adafruit.com/dht-humidity-sensing-on-raspberry-pi-with-gdocs-logging/python-setup

# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
# SPDX-License-Identifier: MIT

# RUN:
# REST_SERVER=http://myserver:59986 python3 read.py

import time
import board
import adafruit_dht
import requests
import json
import os

rest_server = os.environ['REST_SERVER']

# Initial the dht device, with data pin connected to:
dhtDevice = adafruit_dht.DHT22(board.D4)

# you can pass DHT22 use_pulseio=False if you wouldn't like to use pulseio.
# This may be necessary on a Linux single board computer like the Raspberry Pi,
# but it will not work in CircuitPython.
# dhtDevice = adafruit_dht.DHT22(board.D18, use_pulseio=False)

while True:
    try:
        print("----------------------------")
        # Print the values to the serial port
        temperature = dhtDevice.temperature
        humidity = dhtDevice.humidity
        print("Temp: {:.1f}C  Humidity: {}% ".format(temperature, humidity))

        url = '%s/api/v2/resource/DHT11Sensor/temperature' % rest_server
        payload = temperature
        headers = {'content-type': 'application/json'}
        response = requests.post(url, data=json.dumps(payload), headers=headers)
        print("Posting temperature: {} {}".format(response.status_code, response.text))

        url = '%s/api/v2/resource/DHT11Sensor/humidity' % rest_server
        payload = humidity
        headers = {'content-type': 'application/json'}
        response = requests.post(url, data=json.dumps(payload), headers=headers)
        print("Posting humidity: {} {}".format(response.status_code, response.text))

    except requests.exceptions.RequestException as error:
        print(error)
        time.sleep(10.0)
        continue

    except RuntimeError as error:
        # Errors happen fairly often, DHT's are hard to read, just keep going
        print(error.args[0])
        time.sleep(2.0)
        continue
    except Exception as error:
        dhtDevice.exit()
        raise error

    time.sleep(10.0)