60 lines
1.5 KiB
Python
60 lines
1.5 KiB
Python
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#!/usr/bin/python3
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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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import picamera
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import paho.mqtt.publish as mqtt
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from time import sleep
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import datetime
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# Camera settings
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camera_resolution=(2592, 1944)
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camera_warmup_time=2 #in seconds
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#camera_iso=800
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# MQTT settings
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mqtt_server = 'localhost'
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mqtt_port= 1883
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mqtt_auth= {'username':'cameteo',
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'password':'CaMeteo'}
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mqtt_client_id= 'picamera2mqtt'
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mqtt_qos=2
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# Photo parameters
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photo_path = '/home/pi/photos/'
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photo_format = 'jpg'
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photo_mqtt_topic = 'pi/picamera/'
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########
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# Main #
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########
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file_date = datetime.datetime.now().replace(microsecond=0).isoformat()
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file_name = file_date + "." + photo_format
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# Taking a photo
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#################
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cam = picamera.PiCamera(resolution = camera_resolution)
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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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print(photo_path+file_name)
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cam.capture(photo_path+file_name)
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# MQTT publication
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###################
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mqtt_data = [{'topic':photo_mqtt_topic+"path", 'payload':photo_path, 'qos':mqtt_qos, 'retain':False},
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{'topic':photo_mqtt_topic+"last_photo_name", 'payload':file_name, 'qos':mqtt_qos, 'retain':False},
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{'topic':photo_mqtt_topic+"last_photo_date", 'payload':file_date, 'qos':mqtt_qos, 'retain':False}]
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mqtt.multiple(mqtt_data,
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hostname= mqtt_server ,
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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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