Pull get_temp out of main loop

rpiserver/main.py

@@ -13,32 +13,39 @@ import relays
 import data
 
 HI_SETPOINT = 40.0
-LO_SETPOINT = 30.0
+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:
-            temps = await w1therm.get_temperatures()
-            if len(temps) != len(data.PROBES):
-                raise
+            temperature_mean = await get_temp()
         except:
-            logging.error('Problem reading temperature probes! Setting fan on and sleeping.')
+            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
 
-        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)
-
         if temperature_mean > HI_SETPOINT:
             logging.info('Turning fan on')
             relays.set_relay(FAN_RELAY, relays.RELAY_ON)

rpiserver/relays.py

@@ -31,7 +31,7 @@ async def test():
     for r in RELAYS:
         set_relay(r, RELAY_ON)
         await asyncio.sleep(0.5)
-        #set_relay(r, RELAY_OFF)
+        set_relay(r, RELAY_OFF)
 
 if __name__ == '__main__':
     init_relays()