130 lines
5.5 KiB
Python
130 lines
5.5 KiB
Python
# SPDX-FileCopyrightText: 2019 Tony DiCola for Adafruit Industries
|
|
#
|
|
# SPDX-License-Identifier: MIT
|
|
|
|
"""
|
|
Google Spreadsheet DHT Sensor Data-logging Example
|
|
|
|
Copyright (c) 2014 Adafruit Industries
|
|
Author: Tony DiCola
|
|
Modified by: Brent Rubell for Adafruit Industries
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
"""
|
|
import sys
|
|
import time
|
|
import datetime
|
|
|
|
import board
|
|
import adafruit_dht
|
|
import gspread
|
|
from oauth2client.service_account import ServiceAccountCredentials
|
|
|
|
# Type of sensor, can be `adafruit_dht.DHT11` or `adafruit_dht.DHT22`.
|
|
# For the AM2302, use the `adafruit_dht.DHT22` class.
|
|
DHT_TYPE = adafruit_dht.DHT22
|
|
|
|
# Example of sensor connected to Raspberry Pi Pin 23
|
|
DHT_PIN = board.D4
|
|
# Example of sensor connected to Beaglebone Black Pin P8_11
|
|
# DHT_PIN = 'P8_11'
|
|
|
|
# Initialize the dht device, with data pin connected to:
|
|
dhtDevice = DHT_TYPE(DHT_PIN)
|
|
|
|
# Google Docs OAuth credential JSON file. Note that the process for authenticating
|
|
# with Google docs has changed as of ~April 2015. You _must_ use OAuth2 to log
|
|
# in and authenticate with the gspread library. Unfortunately this process is much
|
|
# more complicated than the old process. You _must_ carefully follow the steps on
|
|
# this page to create a new OAuth service in your Google developer console:
|
|
# http://gspread.readthedocs.org/en/latest/oauth2.html
|
|
#
|
|
# Once you've followed the steps above you should have downloaded a .json file with
|
|
# your OAuth2 credentials. This file has a name like SpreadsheetData-<gibberish>.json.
|
|
# Place that file in the same directory as this python script.
|
|
#
|
|
# Now one last _very important_ step before updating the spreadsheet will work.
|
|
# Go to your spreadsheet in Google Spreadsheet and share it to the email address
|
|
# inside the 'client_email' setting in the SpreadsheetData-*.json file. For example
|
|
# if the client_email setting inside the .json file has an email address like:
|
|
# 149345334675-md0qff5f0kib41meu20f7d1habos3qcu@developer.gserviceaccount.com
|
|
# Then use the File -> Share... command in the spreadsheet to share it with read
|
|
# and write acess to the email address above. If you don't do this step then the
|
|
# updates to the sheet will fail!
|
|
GDOCS_OAUTH_JSON = 'your SpreadsheetData-*.json file name'
|
|
|
|
# Google Docs spreadsheet name.
|
|
GDOCS_SPREADSHEET_NAME = 'DHT'
|
|
|
|
# How long to wait (in seconds) between measurements.
|
|
FREQUENCY_SECONDS = 30
|
|
|
|
|
|
def login_open_sheet(oauth_key_file, spreadsheet):
|
|
"""Connect to Google Docs spreadsheet and return the first worksheet."""
|
|
try:
|
|
scope = ['https://spreadsheets.google.com/feeds', 'https://www.googleapis.com/auth/drive']
|
|
credentials = ServiceAccountCredentials.from_json_keyfile_name(oauth_key_file, scope)
|
|
gc = gspread.authorize(credentials)
|
|
worksheet = gc.open(spreadsheet).sheet1 # pylint: disable=redefined-outer-name
|
|
return worksheet
|
|
except Exception as ex: # pylint: disable=bare-except, broad-except
|
|
print('Unable to login and get spreadsheet. Check OAuth credentials, spreadsheet name, \
|
|
and make sure spreadsheet is shared to the client_email address in the OAuth .json file!')
|
|
print('Google sheet login failed with error:', ex)
|
|
sys.exit(1)
|
|
|
|
|
|
print('Logging sensor measurements to\
|
|
{0} every {1} seconds.'.format(GDOCS_SPREADSHEET_NAME, FREQUENCY_SECONDS))
|
|
print('Press Ctrl-C to quit.')
|
|
worksheet = None
|
|
while True:
|
|
# Login if necessary.
|
|
if worksheet is None:
|
|
worksheet = login_open_sheet(GDOCS_OAUTH_JSON, GDOCS_SPREADSHEET_NAME)
|
|
|
|
# Attempt to get sensor reading.
|
|
temp = dhtDevice.temperature
|
|
humidity = dhtDevice.humidity
|
|
|
|
# Skip to the next reading if a valid measurement couldn't be taken.
|
|
# This might happen if the CPU is under a lot of load and the sensor
|
|
# can't be reliably read (timing is critical to read the sensor).
|
|
if humidity is None or temp is None:
|
|
time.sleep(2)
|
|
continue
|
|
|
|
print('Temperature: {0:0.1f} C'.format(temp))
|
|
print('Humidity: {0:0.1f} %'.format(humidity))
|
|
|
|
# Append the data in the spreadsheet, including a timestamp
|
|
try:
|
|
worksheet.append_row((datetime.datetime.now().isoformat(), temp, humidity))
|
|
except: # pylint: disable=bare-except, broad-except
|
|
# Error appending data, most likely because credentials are stale.
|
|
# Null out the worksheet so a login is performed at the top of the loop.
|
|
print('Append error, logging in again')
|
|
worksheet = None
|
|
time.sleep(FREQUENCY_SECONDS)
|
|
continue
|
|
|
|
# Wait 30 seconds before continuing
|
|
print('Wrote a row to {0}'.format(GDOCS_SPREADSHEET_NAME))
|
|
time.sleep(FREQUENCY_SECONDS)
|