Lib & firmware update + cleaner directories structure

raspberry/python/picam_mqtt.py

@@ -0,0 +1,103 @@
+#!/usr/bin/python3
+# -*- coding: UTF8 -*-
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""
+Take a picture with the Pi Camera module and publish the path
+and name of the file on a MQTT broker
+
+@author: arofarn
+"""
+
+import os
+from time import sleep
+from datetime import datetime
+import picamera
+import paho.mqtt.publish as mqtt
+from cameteo_conf import CONFIG_MQTT, CONFIG_PI_CAMERA, PICTURES_EXTENSIONS
+
+MQTT_CLIENT_ID = "picamera"
+NOW = datetime.utcNOW()
+
+########
+# Main #
+########
+
+if not os.path.exists(CONFIG_PI_CAMERA['PICT_DIR']):
+    print("Create photos directory : " + CONFIG_PI_CAMERA['PICT_DIR'])
+    os.mkdir(CONFIG_PI_CAMERA['PICT_DIR'])
+
+FILE_NAME = os.path.extsep.join((datetime.strftime(NOW, CONFIG_PI_CAMERA['PICT_NAME']),
+                                 PICTURES_EXTENSIONS[CONFIG_PI_CAMERA['PICT_FORMAT']]))
+FILE_PATH = os.path.join(CONFIG_PI_CAMERA['PICT_DIR'], FILE_NAME)
+
+print("Shooting " + FILE_PATH)
+
+# Taking a photo
+#################
+
+# Tell the MQTT that we start shooting
+mqtt.single(CONFIG_PI_CAMERA['MQTT_TOPIC'] + "/shooting",
+            payload=1,
+            qos=1,
+            retain=True,
+            hostname=CONFIG_MQTT['HOST'],
+            port=CONFIG_MQTT['PORT'],
+            client_id=MQTT_CLIENT_ID,
+            auth=CONFIG_MQTT['AUTH'])
+
+# Camera settings
+cam = picamera.PiCamera(resolution=CONFIG_PI_CAMERA['RESOLUTION'])
+cam.iso = CONFIG_PI_CAMERA['ISO']
+cam.awb_mode = CONFIG_PI_CAMERA['AWB']
+cam.rotation = CONFIG_PI_CAMERA['ROTATION']
+cam.contrast = CONFIG_PI_CAMERA['CONSTRAST']
+cam.exposure_mode = CONFIG_PI_CAMERA['EXPO_MODE']
+cam.image_effect = 'none'
+
+#Add some EXIF tags
+cam.exif_tags['EXIF.UserComment'] = 'Cameteo !'
+
+# Warm-up
+cam.start_preview()
+sleep(CONFIG_PI_CAMERA['WARMUP_TIME'])
+
+cam.capture(FILE_PATH, format=CONFIG_PI_CAMERA['PICT_FORMAT'],
+            quality=95, thumbnail=None)
+
+cam.close()
+
+# MQTT publication
+###################
+
+MQTT_DATA = [{'topic': CONFIG_PI_CAMERA['MQTT_TOPIC'] + "/shooting",
+              'payload': 0,
+              'qos': 2,
+              'retain': True},
+             {'topic': CONFIG_PI_CAMERA['MQTT_TOPIC'] + "/photos_path",
+              'payload': CONFIG_PI_CAMERA['PICT_DIR'],
+              'qos': 2,
+              'retain': True},
+             {'topic': CONFIG_PI_CAMERA['MQTT_TOPIC'] + "/last_photo",
+              'payload': CONFIG_PI_CAMERA['PICT_NAME'],
+              'qos': 2,
+              'retain': True},
+            ]
+
+mqtt.multiple(MQTT_DATA,
+              hostname=CONFIG_MQTT['HOST'],
+              port=CONFIG_MQTT['PORT'],
+              client_id=MQTT_CLIENT_ID,
+              auth=CONFIG_MQTT['AUTH'])