帮我写一个树莓派对温湿度传感器自检的程序
时间: 2023-10-23 08:09:54 浏览: 38
好的,这个问题我可以回答。以下是树莓派对温湿度传感器自检的Python代码:
```
import Adafruit_DHT
sensor = Adafruit_DHT.DHT11
pin = 4
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
if humidity is not None and temperature is not None:
print('Temperature={0:0.1f}C Humidity={1:0.1f}%'.format(temperature, humidity))
else:
print('Failed to read sensor. Check wiring!')
```
该程序使用了Adafruit_DHT库,读取连接在GPIO 4引脚的DHT11温湿度传感器,并打印出读数。如果读数失败,则提示检查线路。
相关问题
帮我写个树莓派对DS18B20温度传感器自检的程序
好的,这个问题可以回答。以下是一个简单的 Python 代码示例,可用于自检 DS18B20 温度传感器:
```
import os
def read_temp_raw(sensor_id):
device_folder = '/sys/bus/w1/devices/' + sensor_id
device_file = device_folder + '/w1_slave'
with open(device_file, 'r') as f:
lines = f.readlines()
return lines
def read_temp(sensor_id):
lines = read_temp_raw(sensor_id)
while lines[0].strip()[-3:] != 'YES':
time.sleep(0.2)
lines = read_temp_raw(sensor_id)
equals_pos = lines[1].find('t=')
if equals_pos != -1:
temp_string = lines[1][equals_pos+2:]
temp_c = float(temp_string) / 1000.0
return temp_c
sensor_id = '28-xxxxxxxxxxxx' # 根据实际设备 ID 修改
temp = read_temp(sensor_id)
print('当前温度为:{:.1f} ℃'.format(temp))
```
树莓派对ds18b20温度传感器自检
和读取数据的代码是什么?谢谢。
我可以回答你的问题,以下是代码:
```python
import os
import glob
import time
os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')
base_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(base_dir + '28*')[0]
device_file = device_folder + '/w1_slave'
def read_temp_raw():
f = open(device_file, 'r')
lines = f.readlines()
f.close()
return lines
def read_temp():
lines = read_temp_raw()
while lines[0].strip()[-3:] != 'YES':
time.sleep(0.2)
lines = read_temp_raw()
equals_pos = lines[1].find('t=')
if equals_pos != -1:
temp_string = lines[1][equals_pos+2:]
temp_c = float(temp_string) / 1000.0
temp_f = temp_c * 9.0 / 5.0 + 32.0
return temp_c, temp_f
while True:
print(read_temp())
time.sleep(1)
```
希望能够满足你的需求。如果你有其他问题,欢迎继续提问。