AM2302 사용(파이썬; Python)

Posted on: 2019년 06월 15일 2019년 06월 15일
Categories: 강의자료, 라즈베리파이

라이브러리 추가(파이썬 3버전용) : 참조 https://blog.naver.com/elepartsblog/221525069011
1. python, rip.gpio 라이브러리 추가 : 이미 설치되어 있었음
  1. sudo apt-get update
  2. sudo apt-get install -y python3 python3-pip python-dev
  3. sudo pip3 install rpi.gpio
2. DHT 라이브러리 추가
  1. sudo apt-get install build-essential python-dev
  2. sudo apt-get install build-essential python3-dev
3. DHT 소스 코드 다운로드 및 설치
  1. git clone https://github.com/adafruit/Adafruit_Python_DHT.git
  2. cd Adafruit_Python_DHT
  3. sudo python3 setup.py install
4. 라즈베리파이와 연결 : DAT를 gpio11 연결했음
5. 동작 확인
  1. cd examples
  2. sudo ./AdafruitDHT.py 11 11 : DHT11과 gpio11을 연결했다는 의미

파이썬 소스코드 : 온도와 습도 측정

import RPi.GPIO as gpio
import Adafruit_DHT as dht
import time
import warnings
warnings.filterwarnings('ignore')
# ref : https://blog.naver.com/dnjswns2280/221402960390

DAT = 11

gpio.cleanup()
gpio.setmode(gpio.BCM)

while True:
    #humidity, temperature = dht.read_retry(dht.DHT11, DAT)
    humidity, temperature = dht.read_retry(dht.DHT22, DAT)
    #humidity, temperature = dht.read_retry(dht.AM2302, DAT)
    humid = round(humidity, 1)
    temp = round(temperature, 1)
    print (temp, humid)

    time.sleep(2)

import RPi.GPIO as gpio

import Adafruit_DHT as dht

import time

import warnings

warnings.filterwarnings('ignore')

# ref : https://blog.naver.com/dnjswns2280/221402960390

DAT = 11

gpio.cleanup()

gpio.setmode(gpio.BCM)

while True:

#humidity, temperature = dht.read_retry(dht.DHT11, DAT)

humidity, temperature = dht.read_retry(dht.DHT22, DAT)

#humidity, temperature = dht.read_retry(dht.AM2302, DAT)

humid = round(humidity, 1)

temp = round(temperature, 1)

print (temp, humid)

time.sleep(2)

실행결과

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