Fix systemd service file

greenhouse.service

@@ -1,10 +1,11 @@
-    [Unit]
-    Description=Greenhouse service
-    After=multi-user.target
+[Unit]
+Description=Greenhouse service
+After=multi-user.target
 
-    [Service]
-    Type=idle
-    ExecStart=/usr/bin/python3 -m greenhouse
+[Service]
+Type=idle
+ExecStart=gunicorn --bind 0.0.0.0:80 greenhouse:app
+
+[Install]
+WantedBy=multi-user.target
 
-    [Install]
-    WantedBy=multi-user.target

greenhouse/app.py

@@ -1,5 +1,6 @@
 import json
 import datetime
+import logging
 from threading import Thread
 from time import sleep
 
@@ -12,7 +13,7 @@ from w1thermsensor import W1ThermSensor
 import RPi.GPIO as GPIO
 
 sensor = W1ThermSensor()
-water_pin = 17  #17/27/22
+water_pin = 22  #17/27/22
 heat_pin = 26
 
 heat_state = False
@@ -23,6 +24,14 @@ GPIO.setwarnings(False)
 GPIO.setmode(GPIO.BCM)
 GPIO.setup(water_pin, GPIO.OUT)
 
+log_level = logging.INFO
+LOG_FILE = "/var/log/greenhouse.log"
+LOG_FORMAT = "%(asctime)s %(levelname)s %(message)s"
+
+logging.basicConfig(format=LOG_FORMAT, level=log_level, filename=LOG_FILE)
+#logging.basicConfig(format=LOG_FORMAT, level=log_level)
+log = logging.getLogger('greenhouse')
+
 class Heat(Thread):
     def __init__(self, pin):
         super(Heat, self).__init__()
@@ -36,11 +45,11 @@ class Heat(Thread):
 
     def on(self):
         self.__state = True
-        GPIO.output(self.__pin, 1)
+        GPIO.output(self.__pin, 0)
 
     def off(self):
         self.__state = False
-        GPIO.output(self.__pin, 0)
+        GPIO.output(self.__pin, 1)
 
     def run(self):
         self.__next_update = datetime.datetime.now()
@@ -49,9 +58,9 @@ class Heat(Thread):
             if now >= self.__next_update:
                 if self.__state:
                     # Do a power cycle to prevent auto-poweroff
-                    GPIO.output(self.__pin, 0)
-                    sleep(5)
                     GPIO.output(self.__pin, 1)
+                    sleep(5)
+                    GPIO.output(self.__pin, 0)
                 self.__next_update = now + datetime.timedelta(minutes=5)
             sleep(1)
 
@@ -93,8 +102,10 @@ class GreenControl(Thread):
                     temperature = sensor.get_temperature()
                     if float(temperature) < float(self.config['heat']['on_temperature']) and not heat.state():
                         heat.on()
+                        log.info("Switch heat on by temperature level: %.1f °C", float(temperature))
                     elif float(temperature) > float(self.config['heat']['off_temperature']) and heat.state():
                         heat.off()
+                        log.info("Switch heat off by temperature level: %.1f °C", float(temperature))
                     elif heat.state():
                         # Do a power cycle to prevent auto-poweroff
                         heat.off()
@@ -113,11 +124,13 @@ class GreenControl(Thread):
                 off_time = now.replace(hour=int(off_time_pattern[0]), minute=int(off_time_pattern[1]), second=0, microsecond=0)
 
                 if now > on_time and now <= off_time and not self.__water_state:
-                    GPIO.output(water_pin, 1)
-                    self.__water_state = True
-                elif now > off_time and self.__water_state:
                     GPIO.output(water_pin, 0)
+                    self.__water_state = True
+                    log.info("Switch water on by time")
+                elif now > off_time and self.__water_state:
+                    GPIO.output(water_pin, 1)
                     self.__water_state = False
+                    log.info("Switch water off by time")
             sleep(1)
 
 
@@ -165,7 +178,7 @@ def get_sample():
         temperature = None
 
     water_state = False
-    if GPIO.input(water_pin):
+    if not GPIO.input(water_pin):
         water_state = True
 
     res = {}
@@ -183,14 +196,18 @@ def patch_sample():
     record = json.loads(request.data)
     if "water" in record:
         if record["water"]:
-            GPIO.output(water_pin, 1)
-        else:
             GPIO.output(water_pin, 0)
+            log.info("Switch water on by button: {}".format(datetime.datetime.now()))
+        else:
+            GPIO.output(water_pin, 1)
+            log.info("Switch water off by button: {}".format(datetime.datetime.now()))
     if "heat" in record:
         if record["heat"]:
             heat.on()
+            log.info("Switch heat on by button: {}".format(datetime.datetime.now()))
         else:
             heat.off()
+            log.info("Switch heat off by button: {}".format(datetime.datetime.now()))
 
     res = make_response("", 204)
     return res