我在 Raspberrypi 4B 4Gb 上运行最新的树莓派操作系统“Linux raspberrypi 5.4.51-v7l+ #1327 SMP Thu Jul 23 11:04:39 BST 2020 armv7l GNU/Linux”。
我已经安装了 Python3 sudo apt-get install python3-dev python3-pip
更新了设置工具、wheel 和 pip sudo python3 -m pip install --upgrade pip setuptools wheel
并安装了 Adafruit_DHT 模块 sudo pip3 install Adafruit_DHT
之后我将我的 DHT22 连接到 gpio4 上的 rpi 并创建了以下 python 脚本:
import Adafruit_DHT
import time
from datetime import datetime
DHT_SENSOR = Adafruit_DHT.DHT22
DHT_PIN = 4
PROBE_NAME = "PI4"
humidity, temperature = Adafruit_DHT.read_retry(DHT_SENSOR, DHT_PIN)
if humidity is not None and temperature is not None:
print("{2} - T={0:0.1f} H={1:0.1f}".format(temperature, humidity, datetime.now()))
else:
print("Failed to retrieve data from humidity sensor")
比我运行它 sudo python3 temp.py
我收到以下错误
Traceback (most recent call last):
File "temp.py", line 11, in <module>
humidity, temperature = Adafruit_DHT.read_retry(DHT_SENSOR, DHT_PIN)
File "/usr/local/lib/python3.7/dist-packages/Adafruit_DHT/common.py", line 94, in read_retry
humidity, temperature = read(sensor, pin, platform)
File "/usr/local/lib/python3.7/dist-packages/Adafruit_DHT/common.py", line 80, in read
platform = get_platform()
File "/usr/local/lib/python3.7/dist-packages/Adafruit_DHT/common.py", line 60, in get_platform
from . import Beaglebone_Black
File "/usr/local/lib/python3.7/dist-packages/Adafruit_DHT/Beaglebone_Black.py", line 24, in <module>
from . import Beaglebone_Black_Driver as driver
ImportError: cannot import name 'Beaglebone_Black_Driver' from 'Adafruit_DHT' (/usr/local/lib/python3.7/dist-packages/Adafruit_DHT/__init__.py)
知道如何让它工作吗?
我在树莓派零 w 上完成了完全相同的步骤,它开箱即用
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