86 lines
2.2 KiB
Python
86 lines
2.2 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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"""
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Take a picture with the Pi Camera module and publish the path
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and name of the file on a MQTT broker
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@author: arofarn
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"""
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import picamera
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import paho.mqtt.publish as mqtt
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from time import sleep
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from cameteo_conf import *
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mqtt_client_id = "picamera"
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now = datetime.utcnow()
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########
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# Main #
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########
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if not(os.path.exists(photo_dir)):
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print("Create photos directory : " + photo_dir)
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os.mkdir(photo_dir)
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file_name = datetime.strftime(now, photo_name) + os.path.extsep + photo_extensions[photo_format]
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file_path = os.path.join(photo_dir, file_name)
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print("Shooting " + file_path)
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# Taking a photo
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#################
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# Tell the MQTT that we start shooting
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mqtt.single(camera_mqtt_topic + "/shooting" ,
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payload= 1 ,
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qos= 1 ,
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retain= True ,
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hostname= mqtt_host ,
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port= mqtt_port ,
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client_id= mqtt_client_id ,
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auth= mqtt_auth )
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# Camera settings
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cam = picamera.PiCamera(resolution = camera_resolution)
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cam.iso = camera_iso
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cam.awb_mode = camera_awb
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cam.rotation = camera_rotation
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cam.contrast = camera_contrast
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cam.exposure_mode = camera_expo_mode
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cam.image_effect = 'none'
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#Add some EXIF tags
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cam.exif_tags['EXIF.UserComment'] = 'Cameteo !'
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# Warm-up
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cam.start_preview()
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sleep(camera_warmup_time)
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cam.capture(file_path, format=photo_format, quality=95, thumbnail=None)
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cam.close()
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# MQTT publication
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###################
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mqtt_data = [{'topic': camera_mqtt_topic + "/shooting",
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'payload': 0,
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'qos': 2,
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'retain': True},
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{'topic': camera_mqtt_topic + "/photos_path",
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'payload': photo_dir,
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'qos': 2,
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'retain': True},
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{'topic': camera_mqtt_topic + "/last_photo",
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'payload': file_name,
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'qos': 2,
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'retain': True},
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]
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mqtt.multiple(mqtt_data,
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hostname= mqtt_host ,
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port= mqtt_port ,
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client_id= mqtt_client_id ,
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auth= mqtt_auth )
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