Mercurial > templog

annotate py/fridge.py @ 520:9b98091ca573

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fridge.is_off() wasn't a method
author Matt Johnston <matt@ucc.asn.au>
date Fri, 19 Dec 2014 22:34:41 +0800
parents 838e868a046e
children d9e81a563923
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
1 # -*- coding: utf-8 -*-
462
a91adc95543d less verbose logging
Matt Johnston <matt@ucc.asn.au>
parents: 461
diff changeset
2 from utils import L,W,E,EX,D
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
3 import config
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
4 import gevent
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
5
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
6 class Fridge(gevent.Greenlet):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
7
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
8 OVERSHOOT_MAX_DIV = 1800.0 # 30 mins
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
9
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
10 def __init__(self, server):
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
11 gevent.Greenlet.__init__(self)
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
12 self.server = server
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
13 self.setup_gpio()
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
14 self.wort_valid_clock = 0
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
15 self.fridge_on_clock = 0
519
838e868a046e make the fridge off timer more robust
Matt Johnston <matt@ucc.asn.au>
parents: 518
diff changeset
16 self.off()
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
17
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
18 def setup_gpio(self):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
19 dir_fn = '%s/direction' % config.FRIDGE_GPIO
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents: 443
diff changeset
20 with open(dir_fn, 'w') as f:
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
21 f.write('low')
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
22 val_fn = '%s/value' % config.FRIDGE_GPIO
519
838e868a046e make the fridge off timer more robust
Matt Johnston <matt@ucc.asn.au>
parents: 518
diff changeset
23 # XXX - Fridge should have __enter__/__exit__, close the file there.
447
8fdf86ea41e7 few updates, seems to run
Matt Johnston <matt@ucc.asn.au>
parents: 444
diff changeset
24 self.value_file = open(val_fn, 'r+')
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
25
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
26 def turn(self, value):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
27 self.value_file.seek(0)
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
28 if value:
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
29 self.value_file.write('1')
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
30 else:
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
31 self.value_file.write('0')
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
32 self.value_file.flush()
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
33
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
34 def on(self):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
35 self.turn(True)
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
36
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
37 def off(self):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
38 self.turn(False)
519
838e868a046e make the fridge off timer more robust
Matt Johnston <matt@ucc.asn.au>
parents: 518
diff changeset
39 self.fridge_off_clock = self.server.now()
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
40
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
41 def is_on(self):
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
42 self.value_file.seek(0)
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
43 buf = self.value_file.read().strip()
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
44 if buf == '0':
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
45 return False
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
46 if buf != '1':
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
47 E("Bad value read from gpio '%s': '%s'"
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
48 % (self.value_file.name, buf))
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
49 return True
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
50
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
51 # greenlet subclassed
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
52 def _run(self):
461
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
53 if self.server.params.disabled:
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
54 L("Fridge is disabled")
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
55 while True:
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
56 self.do()
518
0b5ff341d124 sleep on a semaphore so it can start/stop immediately when there's a SIGHUP
Matt Johnston <matt@ucc.asn.au>
parents: 497
diff changeset
57 self.server.sleep(config.FRIDGE_SLEEP)
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
58
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents: 443
diff changeset
59 def do(self):
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
60 """ this is the main fridge control logic """
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
61 wort, fridge = self.server.current_temps()
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
62
444
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents: 443
diff changeset
63 params = self.server.params
c5629d79b4ac few more bits
Matt Johnston <matt@ucc.asn.au>
parents: 443
diff changeset
64
469
de4abcbe8f46 make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents: 467
diff changeset
65 fridge_min = params.fridge_setpoint - params.fridge_range_lower
de4abcbe8f46 make fridge air range a parameter
Matt Johnston <matt@ucc.asn.au>
parents: 467
diff changeset
66 fridge_max = params.fridge_setpoint + params.fridge_range_upper
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
67
463
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
68 wort_min = params.fridge_setpoint
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
69 wort_max = params.fridge_setpoint + params.fridge_difference
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
70
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
71 off_time = self.server.now() - self.fridge_off_clock
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
72
476
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
73 if wort is not None:
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
74 self.wort_valid_clock = self.server.now()
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
75
519
838e868a046e make the fridge off timer more robust
Matt Johnston <matt@ucc.asn.au>
parents: 518
diff changeset
76 # Safety to avoid bad things happening to the fridge motor (?)
838e868a046e make the fridge off timer more robust
Matt Johnston <matt@ucc.asn.au>
parents: 518
diff changeset
77 # When it turns off don't start up again for at least FRIDGE_DELAY
520
9b98091ca573 Fridge.is_off() wasn't a method
Matt Johnston <matt@ucc.asn.au>
parents: 519
diff changeset
78 if not self.is_on() and off_time < config.FRIDGE_DELAY:
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
79 L("fridge skipping, too early")
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
80 return
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
81
461
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
82 if params.disabled:
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
83 if self.is_on():
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
84 L("Disabled, turning fridge off")
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
85 self.off()
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
86 return
1eb68df9f8ab Add daemon mode with locking, add "disabled" parameter
Matt Johnston <matt@ucc.asn.au>
parents: 457
diff changeset
87
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
88 # handle broken wort sensor
476
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
89 if wort is None:
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
90 invalid_time = self.server.now() - self.wort_valid_clock
497
455f19b64e0f Fix invalid wort time check
Matt Johnston <matt@ucc.asn.au>
parents: 477
diff changeset
91 W("Invalid wort sensor for %d secs" % invalid_time)
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
92 if invalid_time < config.FRIDGE_WORT_INVALID_TIME:
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
93 W("Has only been invalid for %d, waiting" % invalid_time)
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
94 return
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
95
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
96 if fridge is None:
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
97 W("Invalid fridge sensor")
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
98
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
99 if self.is_on():
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
100 turn_off = False
443
bca470d153fd a bit more, and some tests
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
101 on_time = self.server.now() - self.fridge_on_clock
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
102
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
103 overshoot = 0
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
104 if on_time > params.overshoot_delay:
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
105 overshoot = params.overshoot_factor \
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
106 * min(self.OVERSHOOT_MAX_DIV, on_time) \
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
107 / self.OVERSHOOT_MAX_DIV
462
a91adc95543d less verbose logging
Matt Johnston <matt@ucc.asn.au>
parents: 461
diff changeset
108 D("on_time %(on_time)f, overshoot %(overshoot)f" % locals())
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109
477
d05b1612e19e a few fixes
Matt Johnston <matt@ucc.asn.au>
parents: 476
diff changeset
110 if not params.nowort and wort is not None:
d05b1612e19e a few fixes
Matt Johnston <matt@ucc.asn.au>
parents: 476
diff changeset
111 if wort - overshoot < params.fridge_setpoint:
463
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
112 L("wort has cooled enough, %(wort)f" % locals() )
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
113 turn_off = True
463
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
114 elif fridge is not None and fridge < fridge_min:
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
115 W("fridge off fallback, fridge %(fridge)f, min %(fridge_min)f" % locals())
476
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
116 if wort is None:
06de0f2ffa26 workaround for invalid wort time
Matt Johnston <matt@ucc.asn.au>
parents: 469
diff changeset
117 W("wort has been invalid for %d" % (self.server.now() - self.wort_valid_clock))
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
118 turn_off = True
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
120 if turn_off:
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
121 L("Turning fridge off")
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
122 self.off()
439
31ac84425a2d python raspberry pi rewrite
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
123
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
124 else:
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
125 # fridge is off
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
126 turn_on = False
467
fa79666fb375 add nowort mode
Matt Johnston <matt@ucc.asn.au>
parents: 463
diff changeset
127 if not params.nowort \
fa79666fb375 add nowort mode
Matt Johnston <matt@ucc.asn.au>
parents: 463
diff changeset
128 and wort is not None \
fa79666fb375 add nowort mode
Matt Johnston <matt@ucc.asn.au>
parents: 463
diff changeset
129 and wort >= wort_max:
462
a91adc95543d less verbose logging
Matt Johnston <matt@ucc.asn.au>
parents: 461
diff changeset
130 L("Wort is too hot %f, max %f" % (wort, wort_max))
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
131 turn_on = True
463
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
132 elif fridge is not None and fridge >= fridge_max:
f2cca8062128 - use the fridge temperature for control too, keep it in a 6deg band
Matt Johnston <matt@ucc.asn.au>
parents: 462
diff changeset
133 W("frdge on fallback, fridge %(fridge)f, max %(fridge_max)f" % locals())
442
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
134 turn_on = True
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
135
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
136 if turn_on:
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
137 L("Turning fridge on")
02318c9660cd copied fridge logic from main.c
Matt Johnston <matt@ucc.asn.au>
parents: 439
diff changeset
138 self.on()
457
176fc5b68a3f fix fridge_on_time
Matt Johnston <matt@ucc.asn.au>
parents: 448
diff changeset
139 self.fridge_on_clock = self.server.now()