soakforjesus/rpiserver/main.py

import os
import logging
logging.basicConfig(
        format='[%(asctime)s] %(levelname)s %(module)s/%(funcName)s - %(message)s',
        level=logging.DEBUG if os.environ.get('DEBUG') else logging.INFO)
#logging.getLogger('aiohttp').setLevel(logging.DEBUG if os.environ.get('DEBUG') else logging.WARNING)

import asyncio
from statistics import mean

import w1therm
import relays
import data

HI_SETPOINT = 40.0
LO_SETPOINT = HI_SETPOINT - 10.0

PUMP_RELAY = relays.RELAY1
FAN_RELAY = relays.RELAY3

async def get_temp():
    temps = await w1therm.get_temperatures()
    if len(temps) != len(data.PROBES):
        raise

    temperature_log = []
    for id_, temp in temps.items():
        temperature_log.append('{}: {} C'.format(data.PROBES[id_], temp))
    logging.info('Temperature probe ' + ', '.join(temperature_log))

    temperature_list = list(temps.values())
    temperature_mean = mean(temperature_list)
    return temperature_mean


async def main():
    relays.init_relays()
    relays.set_relay(PUMP_RELAY, relays.RELAY_ON)

    while True:
        try:
            temperature_mean = await get_temp()
        except:
            logging.error('Problem reading temperature probes! Turning fan on and sleeping 60s.')
            relays.set_relay(FAN_RELAY, relays.RELAY_ON)
            await asyncio.sleep(60)
            continue

        if temperature_mean > HI_SETPOINT:
            logging.info('Turning fan on')
            relays.set_relay(FAN_RELAY, relays.RELAY_ON)
        elif temperature_mean < LO_SETPOINT:
            logging.info('Turning fan off')
            relays.set_relay(FAN_RELAY, relays.RELAY_OFF)

        await asyncio.sleep(10)

if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())
    loop.close()