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| {{Rasp-Hack-DHT22-NAV}} | | {{Rasp-Hack-DHT22-NAV}} |
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− | {{traduction}} | + | <syntaxhighlight lang="python"> |
| + | #!/usr/bin/python |
| + | # -*- coding: utf-8 -*- |
| + | |
| + | # Copyright (c) 2014 Adafruit Industries |
| + | # Author: Tony DiCola |
| + | # Traduction des commentaires - comment translation : |
| + | # Meurisse D. (shop.mchobby.be) |
| + | |
| + | # 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 de la bibliotheque DHT |
| + | import Adafruit_DHT |
| + | |
| + | # La classe senseur doit être soit |
| + | # * Adafruit_DHT.DHT11 |
| + | # * Adafruit_DHT.DHT22 |
| + | # * Adafruit_DHT.AM2302 |
| + | sensor = Adafruit_DHT.DHT22 |
| + | |
| + | # Si vous utilisez un Beaglebone Black, le senseur DHT doit être |
| + | # connecté sur la broche P8_11. |
| + | # pin = 'P8_11' |
| + | |
| + | # Si vous utilisez un Raspberry Pi, le senseur DHT doit être |
| + | # connecté sur GPIO23. |
| + | pin = 23 |
| + | |
| + | # Essayer d'obtenir une lecture du senseur. Utiliser la méthode read_retry qui permet |
| + | # de faire jusqu'a 15 essais de lecture pour obtenir une lecture du senseur |
| + | # (attendre 2 secondes entre chaque essais). |
| + | # Lecture de l'humidité et température |
| + | humidity, temperature = Adafruit_DHT.read_retry(sensor, pin) |
| + | |
| + | # Il peut parfois arriver que la lecture échoue et que vous n'obteniez |
| + | # pas de lecture ou que le résultat est null. |
| + | # Cela est causé par le fait que Linux ne garanti pas |
| + | # le temps d'appel pour lire le senseur. |
| + | # Si cela arrive, essayez encore! |
| + | if humidity is not None and temperature is not None: |
| + | print('Temp={0:0.1f}*C Humidity={1:0.1f}%'.format(temperature, humidity)) |
| + | else: |
| + | print('Echec de lecture. Essayez encore!') |
| + | </syntaxhighlight> |
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| {{Rasp-Hack-DHT22-TRAILER}} | | {{Rasp-Hack-DHT22-TRAILER}} |