157 lines
4.3 KiB
Python
Executable File
157 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python3
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from select import poll, POLLPRI, POLLIN, POLLERR
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import sys
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import os
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import threading
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import time
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import queue
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import requests
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import configparser
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def trans():
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global serverconf
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# build together url and headers
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uri = ""
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if serverconf.getboolean("ssl") == True:
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uri = "https://"
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else:
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uri = "http://"
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uri = uri + serverconf["url"] + "/get.php"
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if sys.stdout.isatty():
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print("Remote URI: " + uri)
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queuelast = time.time()
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while True:
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# get value from queue (blocking)
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queuedata = powerqueue.get()
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powerqueue.task_done()
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queuetime = int(queuedata[0])
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queueval = str(queuedata[1])
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# if more than five seconds passed since last event
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if ((queuetime - queuelast) >= 5):
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# put payload together
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payload = {"val": str(queuetime) + ";" + str(queueval)}
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if sys.stdout.isatty():
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print("request " + uri + " => "+repr(payload))
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# send to webserver via http post
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#
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# Um den Krempel hier muss noch mal eine While Schleife rum, damit die Daten nicht verloren gehen.
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#
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try:
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if serverconf.getboolean("basicauth") == True:
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r = requests.post(uri, data=payload, verify=False, auth=(serverconf["user"], serverconf["password"]), timeout=10, headers={'connection':'close'})
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else:
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r = requests.post(uri, data=payload, verify=False, timeout=10, headers={'connection':'close'})
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except:
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print("Exception raised!")
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else:
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if sys.stdout.isatty():
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print("server response: " + str(r.status_code))
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queuelast = queuetime
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else:
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# drop data if less than five seconds passed since last event
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del queuedata
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if sys.stdout.isatty():
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print("Drop queued element")
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def readgpio():
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global gpiopath
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global gpioconf
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global smconf
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# open gpio filehandle
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gpio = open(gpiopath + "value", "r")
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# setup polling
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gpiopoll = poll()
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gpiopoll.register(gpio, POLLERR)
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# wait for two interrupts to have a "clean" starting point
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if sys.stdout.isatty():
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print("wait for 2 interrupts...")
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gpioevent = gpiopoll.poll()
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gpio.read()
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gpio.seek(0)
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if sys.stdout.isatty():
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print("wait for 1 interrupt....")
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gpioevent = gpiopoll.poll()
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last = time.time()
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gpio.read()
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gpio.seek(0)
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# start readgpio mainloop
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if sys.stdout.isatty():
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print("start readgpio mainloop")
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while True:
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gpioevent = gpiopoll.poll()
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gpioval = gpio.read(1)
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gpio.seek(0)
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# check if interrupt was a falling edge (yes, really!)
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if gpioval == '0':
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now = time.time()
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# plausibility check
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if ((now-last) >= gpioconf.getfloat("mintime")):
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# calculate current power consumption
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power = round((3600000/smconf.getint("impkwh")) / (now-last),2)
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if sys.stdout.isatty():
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print("Current power consumption: " + str(power) + " Watt")
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print("GPIO state: " + gpioval)
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# put measured value on queue
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powerqueue.put([now, power])
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last = now
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# error if a tty is connected and a raising edge was triggered
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else:
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if sys.stdout.isatty():
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print("ERROR: not a falling edge! Ignoring interrupt")
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if __name__ == "__main__":
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# read config
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conf = configparser.ConfigParser()
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conf.read("powerpi.conf")
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conf.sections()
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gpioconf = conf['gpio']
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serverconf = conf['server']
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smconf = conf['smartmeter']
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if serverconf["url"] == "power.example.com":
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print("FATAL: configuration not adapted! Aborting!")
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exit(1)
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gpiopath = "/sys/class/gpio/gpio" + gpioconf["port"] + "/"
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# initialise gpio interfaces
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try:
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if not os.path.exists(gpiopath):
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# if not already exported, export gpio port
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gpioinit = open("/sys/class/gpio/export", "w")
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gpioinit.write(gpioconf["port"] + "\n")
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gpioinit.close()
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# set direction of gpio port to "IN"
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gpiopin = open(gpiopath + "direction", "w")
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gpiopin.write("in")
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gpiopin.close()
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# set trigger to falling edge
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gpiotype = open(gpiopath + "edge", "w")
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gpiotype.write("falling")
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gpiotype.close()
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except:
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# if not able to initialise gpios: abort with error
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sys.stderr.write("can't initialize gpio interface\n")
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sys.stderr.flush()
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sys.exit(1)
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# defining queue for measured values
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powerqueue = queue.Queue()
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# disable ssl "no verification" warnings
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if serverconf.getboolean("sslself") == True:
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requests.packages.urllib3.disable_warnings()
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# initialising and starting threads
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th1 = threading.Thread(target=readgpio)
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th2 = threading.Thread(target=trans)
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th1.setDaemon(True)
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th2.setDaemon(True)
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th1.start()
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th2.start()
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#busy loop
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while True:
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time.sleep(1)
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