def _load_hardware(self):
address = self._address
if len(address) >= 2 and terrariumUtils.is_float(address[1]):
# Set / enable power management
self._device['power_mngt'] = terrariumUtils.to_BCM_port_number(address[1])
if self.HARDWARE == terrariumDHT11Sensor.HARDWARE:
device = DHT11(terrariumUtils.to_BCM_port_number(address[0]))
elif self.HARDWARE in [terrariumDHT22Sensor.HARDWARE, terrariumAM2302Sensor.HARDWARE]:
device = DHT22(terrariumUtils.to_BCM_port_number(address[0]))
return device
def test_dht11(dht11gpio):
if not dht11gpio:
pytest.skip("Skipping. No GPIO Pin for DHT11 Provided.")
return
dht = DHT11(gpio=int(dht11gpio))
result = dht.read()
print(result)
dht11_result = result
assert 'temp_c' in result
assert 'temp_f' in result
assert 'humidity' in result
assert 'valid' in result
assert 0 <= result['humidity'] <= 100
def main(): # メイン関数 この関数は末尾のif文から呼び出される
client = mqtt.Client() # クラスのインスタンス(実体)の作成
client.on_connect = onConnect # 接続時のコールバック関数を登録
client.on_disconnect = onDisconnect # 切断時のコールバックを登録
client.on_publish = onPublish # メッセージ送信時のコールバック
sensor = DHT11(GPIO)
client.connect(HOST, 1883, 60) # 接続先は自分自身
# 通信処理スタート
client.loop_start() # subはloop_forever()だが，pubはloop_start()で起動だけさせる
# 永久に繰り返す
while True:
payload = json.dumps(sensor.read(), ensure_ascii=False, indent=4)
print(payload)
client.publish(TOPIC, payload) # トピック名とメッセージを決めて送信
sleep(3) # 3秒待つ
"""
File: chapter09/dht_measure.py
Measure temperature and humidity with DHT sensor.
Dependencies:
pip3 install pigpio pigpio-dht
Built and tested with Python 3.7 on Raspberry Pi 4 Model B
"""
from pigpio_dht import DHT11, DHT22 # (1)
SENSOR_GPIO = 21
sensor = DHT11(SENSOR_GPIO) # (2)
#sensor = DHT22(SENSOR_GPIO)
if __name__ == '__main__':
result = sensor.read(retries=2) # (3)
print(result)
result = sensor.sample(samples=5) # (4)
print(result)
mport subprocess
import time
#subprocess.call("sudo pigpiod", shell=True)
#time.sleep(0.1)
from pigpio_dht import DHT11, DHT22
while True:
gpio = 4 # BCM Numbering
sensor = DHT11(gpio)
#sensor = DHT22(gpio)
result = sensor.read()
print(result)
temperature=([value for value in result.values()][0])
print(temperature)
humidity=([value for value in result.values()][2])
print(humidity)
time.sleep(10)
def MSG(*args):
if Verbose:
msg = " ".join([str(a) for a in args])
print(msg)
sys.stdout.flush()
def sendWithRetry(am, data):
for retry in range(6):
try:
ret = am.send(data)
MSG('sent to Ambient (ret = %d)' % ret.status_code)
break
except requests.exceptions.RequestException as e:
MSG('request failed.')
time.sleep(10)
am = ambient.Ambient(int(CHANNEL), WRITEKEY)
sensor = DHT11(DHT11_PIN)
while True:
try:
data = sensor.read(retries=5)
except TimeoutError:
data = {"valid": False}
if data["valid"]:
MSG("temperature: {} / humidity: {}".format(data["temp_c"], data["humidity"]))
sendWithRetry(am, {'d1': data["temp_c"], 'd2': data["humidity"]})
time.sleep(180)
from common import config
from common.logs import MAIN as logger
from pigpio_dht import DHT11
from gpiozero import MCP3008, DigitalOutputDevice
try:
TEMP_HUMD_SENSOR = DHT11(config.DHT11_PIN)
MOISTURE_SENSOR = MCP3008(channel=config.MCP3008_CHANNEL)
MOISTURE_SENSOR_POWER = DigitalOutputDevice(config.MCP3008_POWER_PIN)
FAN_RELAY = DigitalOutputDevice(config.FAN_RELAY_PIN,
active_high=False,
initial_value=False)
LIGHT_RELAY = DigitalOutputDevice(config.LIGHT_RELAY_PIN,
active_high=False,
initial_value=False)
WATER_RELAY = DigitalOutputDevice(config.WATER_RELAY_PIN,
active_high=False,
initial_value=False)
except Exception as e:
logger.error("Hardware doesn't start properly: %s", e)
folder = os.path.dirname(__file__)
with PidFile('measurements', piddir=os.path.join(folder, '.pid/')) as p:
#read settings file
settings = configparser.ConfigParser()
settings.read(os.path.join(folder, 'settings.ini'))
#pigpio instance
pi = pigpio.pi()
#define DHT11
dht_pin = settings['DHT']['DataPin']
dht_timeout_secs = settings['DHT']['TimeoutSecs']
#gpio, timeout_secs=0.5, use_internal_pullup=True, pi=None
dht_sensor = DHT11(int(dht_pin), float(dht_timeout_secs), True, pi)
#define sampling period
sampling_period = settings['MEASUREMENTS']['SamplingPeriod']
#define influxdb
influx_server = settings['INFLUXDB']['Server']
influx_port = settings['INFLUXDB']['Port']
influx_db = settings['INFLUXDB']['Database']
influx_client = InfluxDBClient(host=influx_server,
port=influx_port,
database=influx_db)
# print(f"Using database <{influx_db}> on <{influx_server}>")
# print(f"Current sampling pariod is <{sampling_period} seconds>")
Built and tested with Python 3.7 on Raspberry Pi 4 Model B """ from pigpio_dht import DHT11, DHT22 from datetime import datetime from time import sleep import requests import logging logging.basicConfig(level=logging.INFO) logger = logging.getLogger() # DHT Temperature/Humidity Sensor GPIO. GPIO = 24 # (1) # Configure DHT sensor - Uncomment appropiate line based on the sensor you have. dht = DHT11(GPIO, use_internal_pullup=True, timeout_secs=0.5) # (2) #dht = DHT22(GPIO, use_internal_pullup=True, timeout_secs=0.5) # How often we check the temperature POLL_INTERVAL_SECS = 60 * 10 # 10 Minutes # Celsius or Fahrenheit USE_DEGREES_CELSIUS = True # (3) # At what high temperature will we send an email HIGH_TEMP_TRIGGER = 20 # Degrees # (4) # At what low temperature will we send an email LOW_TEMP_TRIGGER = 19 # Degrees # (5) # To track when a high temp event has been triggered