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