Version 0.2 - Change date/time display to match the new source (feather RTC !).
Update doc, comments, licence, version...
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Pierrick C
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@ -1,9 +1,25 @@
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# -*- coding: utf-8 -*-
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#!/usr/bin/python3
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# -*- coding: UTF8 -*-
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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Display data from MQTT broker on ePaper screen
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@author: arofarn
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"""
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__version__ = 0.2
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###########
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# IMPORTS #
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@ -25,11 +41,10 @@ mqtt_client_id = "epaper_display"
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white = 255
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black = 0
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"""
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Update ePaper Display
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"""
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def update_epd():
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"""
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Update ePaper Display
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"""
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#rotation de l'image de 90° + 180° si le paramètre epd_rotate est différent de 0
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# la translation permet de rattraper un petit décalage en cas de rotation de 90+180°
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screen = image.rotate(90 + (epd_rotate * 180), expand=True, translate=(-6*epd_rotate, 0))
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@ -41,10 +56,10 @@ def update_epd():
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# CALLBACKS #
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#############
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"""
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Callback pour la connection au MQTT : souscriptions aux topics
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"""
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def on_connect(client, userdata, flags, rc):
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"""
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Callback pour la connection au MQTT : souscriptions aux topics
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"""
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print(mqtt.connack_string(rc))
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if rc == 0:
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print("Subscribing to %s ..." % mqtt_topic)
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@ -53,11 +68,12 @@ def on_connect(client, userdata, flags, rc):
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)
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print("OK")
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"""
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Callback de gestion des messages arrivant au MQTT :
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affichage et enregistrement en base de données
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"""
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def on_message(client, userdata, msg):
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"""
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Callback de gestion des messages arrivant au MQTT :
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affichage et enregistrement en base de données
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"""
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top=msg.topic[len(mqtt_topic)-1:].strip()
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subtopics = top.split("/")
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@ -65,7 +81,6 @@ def on_message(client, userdata, msg):
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payload = msg.payload.decode()
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val = json.loads(payload)
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#Test présence et cohérence de la valeur
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try:
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val['value'] = float(val['value'] )
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@ -85,38 +100,35 @@ def on_message(client, userdata, msg):
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print(val)
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if val['type'] in coord_type:
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#erase former text
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draw.rectangle(coord_type[val['type']] + (coord_type[val['type']][0] + 112,
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coord_type[val['type']][1] + 20),
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fill=white)
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draw.rectangle(coord_type[val['type']] + (coord_type[val['type']][0] + 112, coord_type[val['type']][1] + 20), fill=white)
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#draw new values
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draw.text(coord_type[val['type']],
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"{:6.1f}{} ".format(val['value'], val['unit']),
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font=font20_bold,
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fill=black)
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update_epd()
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# Print feather's date and time on epaper display
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elif subtopics[0] == "SYS":
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payload = msg.payload.decode()
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val = json.loads(payload)
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if val['type'] == "TIME":
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try:
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#Mise en forme de la date et heure reçu pour fuseau horaire configuré
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dt_texte = datetime.strftime(datetime.strptime(val['value'], "%Y/%m/%d_%H:%M:%S") + TimeZone.utcoffset(None),
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"%d/%m/%Y %H:%M:%S")
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except:
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dt_texte = payload
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print(dt_texte)
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draw.rectangle((0, 34, epd2in13.EPD_HEIGHT, 48), fill=white)
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draw.text((0, 34), dt_texte, font=font14, fill=black)
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update_epd()
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"""
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Callback managing date and time from MQTT broker
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"""
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def on_message_date(client, userdata, msg):
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payload = msg.payload.decode()
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print("Date : " + payload)
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try:
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#Mise en forme de la date et heure reçu pour fuseau horaire configuré
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dt_texte = datetime.strftime(datetime.strptime(payload, "%H:%M:%S %d/%m/%Y") + TimeZone.utcoffset(None), "%d/%m/%Y %H:%M:%S")
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except:
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dt_texte = payload
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#Affichage du résultat
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draw.rectangle((0, 34, epd2in13.EPD_HEIGHT, 48), fill=white)
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draw.text((0, 34), dt_texte, font=font14, fill=black)
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update_epd()
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"""
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Update display with info from camera (camera shooting new photo or name of the
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last photo)
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"""
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def on_message_camera(client, userdata, msg):
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"""
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Update display with info from camera (camera shooting new photo or name of the
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last photo)
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"""
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pl = msg.payload.decode()
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print("{} : {} ({})".format(msg.topic, pl, type(pl)))
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@ -132,10 +144,11 @@ def on_message_camera(client, userdata, msg):
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draw.text((0, 106), "Last: " + pl, font=font14, fill=black)
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update_epd()
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"""
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Callback de déconnexion au broker MQTT
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"""
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def on_disconnect(client, userdata, msg):
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"""
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Callback de déconnexion au broker MQTT
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"""
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if msg != 0:
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print("Déconnexion imprévu : %s" % msg)
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exit()
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@ -168,8 +181,15 @@ draw = ImageDraw.Draw(image)
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#Draw basic text and frame :
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draw.rectangle((0, 0, epd2in13.EPD_HEIGHT, 18), fill=black)
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draw.text((60, 1), "Projet Camétéo", font=font16_bold, fill=white)
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draw.text((0, 19), "{} : IP= {}".format(socket.gethostname(), netifaces.ifaddresses('wlan0')[2][0]['addr']), font = font12, fill=black )
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draw.text((60, 1),
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"Projet Camétéo",
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font=font16_bold,
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fill=white)
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draw.text((0, 19),
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"{} : IP= {}".format(socket.gethostname(),
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netifaces.ifaddresses('wlan0')[2][0]['addr']),
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font = font12,
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fill=black )
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draw.line((0,49,epd2in13.EPD_HEIGHT, 49), fill=black)
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draw.line((0,71,epd2in13.EPD_HEIGHT, 71), fill=black)
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draw.line((0,93,epd2in13.EPD_HEIGHT, 93), fill=black)
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@ -194,7 +214,7 @@ mqtt_client.on_connect = on_connect
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mqtt_client.on_message = on_message
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mqtt_client.on_disconnect = on_disconnect
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mqtt_client.message_callback_add("huzzah0/NTP/date", on_message_date)
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#mqtt_client.message_callback_add("feather0/NTP/date", on_message_date)
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mqtt_client.message_callback_add(camera_mqtt_topic + "/#", on_message_camera)
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print(mqtt_host + ":" + str(mqtt_port))
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@ -17,7 +17,7 @@
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"""
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Transmit data from UART (GPIO) to MQTT broker
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"""
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__version__ = "0.1"
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__version__ = "0.2"
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# Dictionnary of data types and units
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data_type = {'cput' : "AT",
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