--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/py/fridge.py	Mon Nov 19 22:46:34 2012 +0800
@@ -0,0 +1,63 @@
+from utils import L,W,E
+import config
+
+class Fridge(object):
+    def __init__(self):
+        self.setup_gpio()
+        self.wort_valid_clock = 0
+
+    def setup_gpio(self):
+        fn = '%s/direction' % config.FRIDGE_GPIO
+        f = open(fn, 'w')
+        f.write('low')
+        f.close()
+        # .off() shouldn't do anything, but tests that "value" is writable
+        self.off()
+
+    def turn(self, value):
+        fn = '%s/value' % config.FRIDGE_GPIO
+        f = open(fn, 'w')
+        if value:
+            f.write('1')
+        else:
+            f.write('0')
+        f.close()
+
+    def on(self):
+        self.turn(1)
+
+    def off(self):
+        self.turn(0)
+
+    def do(self):
+        wort, fridge, ambient = server.current_temps()
+
+        if server.uptime() < config.FRIDGE_DELAY:
+            L("fridge skipping, too early")
+            return
+
+        # handle broken wort sensor
+        if wort is not None:
+            self.wort_valid_clock = server.now()
+        else:
+            W("Invalid wort sensor")
+            invalid_time = server.now() - self.wort_valid_clock
+            if invalid_time < config.FRIDGE_WORT_INVALID_TIME:
+                W("Has only been invalid for %d, waiting" % invalid_time)
+                return
+
+        if fridge is None:
+            W("Invalid fridge sensor")
+
+        
+
+        
+
+        
+
+    def run(self, server):
+        self.server = server
+
+        while True:
+            self.do()
+            gevent.sleep(config.FRIDGE_SLEEP)