Eingangsschalter/schalter.py

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#!/usr/bin/env python3
#########################################################################
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# Spaceapi Implementation for a 63A switch
# (using 5 V 150 mA Raspberry Pi GPIO pin)
#
#
#########################################################################
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# to make sure that everything does not happen at once
import time
import datetime
# json and raspi imports
import json
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# for using GPIO pins of the raspi
import RPi.GPIO as GPIO
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# for logging
import logging
import systemd.journal
########################################################
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#start init
log = logging.getLogger("SpaceAPI Schalter") #create a logger
log_fmt = logging.Formatter("%(levelname)s %(message)s") #define logging format
log_ch = JournalHandler() # create logging Handler
log_ch.setFormatter(log_fmt)
log.addHandler(log_ch)
log.setLevel(logging.INFO)
log.info("CCCHB space api switch v. 0.3 ")
#################################################################################
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#function definitons:
#################################################################################
# will read the GPIO header of the pi and write the current state in the www spaceapi json file
def switched(pos):
wert_des_schalters = not bool(GPIO.input(pin_number))
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icons = data.get("state").get('icon')
if pos != wert_des_schalters:
log.info("state changed to: ", wert_des_schalters)
chn_time = datetime.datetime.now().isoformat()
data.update({'state':{'open':wert_des_schalters,'lastchange':chn_time, "icon":icons}})
with open('/var/www/html/spaceapi.json', 'w') as outfile:
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json.dump(data, outfile, sort_keys=True)
return wert_des_schalters
#################################################################################
#init GPIO pin on raspi
pin_number = 18; #set GPIO Pin number
GPIO.setmode(GPIO.BCM)
GPIO.setup(pin_number, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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GPIO.add_event_detect(pin_number, GPIO.BOTH, callback=switched, bouncetime=200)
log.info("init complete... starting json foo")
#read json file
with open('spaceapi.json','r') as infile:
data = json.load(infile)
#run switched once to get current switch status and change if needed.
#switched(wert_des_schalters)
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currentValue = False
try:
while True:
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time.sleep(1)
currentValue = switched(currentValue)
#include IRCBOT status here?
#do other stuff otherwise just don't do anything?!
except KeyboardInterrupt:
GPIO.cleanup()