Run daily Python script (Warmtemeter) including Imports ( HA on HassOS @ ESX)

@CowboyTW wrote:

All,

I have this modified script (See below) in my python_script folder and it works fine when run from SSH console. Now I want to retrieve the data from my district theater once a day so I need to schedule it. Tried/reviewed online very quickly with Node-RED, Crontab, Python-script, Custom Components, AppDaemon but was not successful yet.

Hoped for simply doing a automation calling the python-script once a day but due to imports and limited functionality on that side can’t get this to work. Crontab no option as this is not persistent and running in the SSH console container probably. Node-red and Custom components were still too complex for me, need to learn a bit more by trial and error.

Any advise? Thanks!
-Tom

#!/usr/bin/python3
###############################################################################
# Stadsverwarming UT550 script for Home Assistant                             #
# Version 0.3 - Author: RuntimeError123 / L. Bosch                            #
# Updated for UT50/550T by tomw@xs4all.nl - 30/Mar/2020                       #
###############################################################################
# Importing modules
#################################
import os
import re
import serial
import requests
from time import sleep
import yaml
import json

# Loading config YAML file
#################################
configfile = os.path.join(os.path.dirname(os.path.realpath(__file__)), \
'stadsverwarming-config.yaml')
config = yaml.safe_load(open(configfile))
destination = config['main']['destination']

# Load mqtt and ssl if mqtt is selected
#################################
if destination == 'mqtt':
    import paho.mqtt.client as mqtt
    if 'certificate' in config['mqtt']:
        import ssl

# Declaring variables
#################################
    broker = config['mqtt']['broker']
    port = config['mqtt']['port']
    if 'username' in config['mqtt']:
        username = config['mqtt']['username']
        password = config['mqtt']['password']
    if 'certificate' in config['mqtt']:
        certificate = config['mqtt']['certificate']
        tls_version = config['mqtt']['tls_version']
        tls_insecure = config['mqtt']['tls_insecure']
    topic = config['mqtt']['topic']
    retain = config['mqtt']['retain']

# Function Lees telegram
#################################

conn = serial.Serial('/dev/ttyUSB1',
                     baudrate=300,
                     bytesize=serial.SEVENBITS,
                     parity=serial.PARITY_EVEN,
                     stopbits=serial.STOPBITS_TWO,
                     timeout=1,
                     xonxoff=0,
                     rtscts=0
                     )

# Wake up
conn.setRTS(False)
conn.setDTR(False)
sleep(5)
conn.setDTR(True)
conn.setRTS(True)

# send /?!
conn.write(str.encode("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2F\x3F\x21\x0D\x0A"))

# Read at 300 BAUD, typenr
print(conn.readline())
print(conn.readline())

# Read at 2400 BAUD, higher might be possible
conn.baudrate=2400

# Read 18 lines (the size of the telegram)
counter = 0
try:
    while counter < 18:
        line=conn.readline().decode('utf-8')
        print(line)

        # This will match on the first line of the telegram with GJ and m3 values.
        matchObj = re.match(r".+6\.8\(([0-9]{4}\.[0-9]{3})\*GJ\)6\.26\(([0-9]{5}\.[0-9]{2})\*m3\)9\.21\(([0-9]{8})\).+", line, re.I|re.S)
        if matchObj:
            kjValue=round(float(matchObj.group(1))*1000)
            m3Value=round(float(matchObj.group(2))*1000)
            print("GJ : " + str(kjValue))
            print("m3: " + str(m3Value))
        counter = counter + 1
finally:
    conn.close()

# Decode and transform new data
###############################
new_energy = str(kjValue)
new_volume = str(m3Value)
new_temp_in = 0  # Looks like this data is not available in heater's datagram
new_temp_out = 0
    
# Updating values
###############################

state = json.dumps({'Energy' : new_energy, \
'Volume' : new_volume, \
'Temperature_in' : new_temp_in, \
'Temperature_out' : new_temp_out})
mqttc = mqtt.Client()
mqttc.connect(broker, port=port)
mqttc.loop_start()
mqttc.publish(topic, state, retain=retain)
mqttc.disconnect()
mqttc.loop_stop()
print("MQTT data published: " +state)
print("Energy: "+str(new_energy))
print("Volume: "+str(new_volume))
print("Temperature in: "+str(new_temp_in))
print("Temperature out: "+str(new_temp_out))

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