Sat, 27 Apr 2019 20:47:26 +0200
Attempt to better check the temperature sensors and lower the cpu load.
335 | 1 | |
2 | 1. Introduction. | |
3 | ||
4 | 2. Hardware. | |
5 | ||
6 | 3. Raspberry GPIO. | |
7 | ||
8 | Most of the hardware is connected via the 8 GPIO pins on the 26p connector. | |
9 | Currently the pins are used or reserved for: | |
10 | ||
11 | GPIO0 - out - 433 MHz transmitter module (FS1000A). | |
12 | GPIO1 - out - reserved for PWM. | |
13 | GPIO2 - out - Frontpanel LED. | |
14 | GPIO3 - bus - DHT11 sensor. | |
15 | GPIO4 - in - Frontpanel Key Enter. | |
16 | GPIO5 - in - Frontpanel Key Down. | |
17 | GPIO6 - in - Frontpanel Key Up. | |
18 | GPIO7 - bus - 1-Wire bus (Maxim protocol). | |
19 | ||
20 | ||
21 | 4. Keyed menu. | |
22 | ||
23 | Using three buttons the device can be controlled. The menu is entered by | |
24 | pressing the Enter key for 2 seconds. With the up and down keys you can step | |
25 | through the menu. Press escape to go back, Press enter for 2 seconds to | |
26 | set the new value. | |
27 | Escape is press both arrow keys together. | |
28 | If not in a menu, short touch of the keys activate the LCD display backlight. | |
29 | The arrow keys select the current item to display. | |
30 | ||
31 | ||
32 | General setup | |
33 | ||
34 | Top screen | |
35 | Units setup -- Units -- Select mode | |
36 | Off mode, toggle heater, cooler, fan. | |
37 | Beer/Fridge mode, change temperature. | |
38 | Profile mode -- If OFF, select a profile. | |
39 | If OFF, allow start profile. | |
40 | If RUN, allow pause/abort. | |
41 | If PAUSE, allow resume/abort. | |
42 | If DONE, allow to go OFF. | |
43 | System mode -- Halt | |
44 | Reboot | |
45 | ||
46 | ||
47 | ||
48 | 5. Client/Server protocol. | |
49 | ||
50 | ||
51 | Commands: | |
52 | ||
53 | ARCHIVE DIR | |
54 | ARCHIVE LOG filename (get in LOG format) | |
55 | ARCHIVE GET filename (download file) | |
56 | ||
57 | DEVICE ADD type | |
58 | DEVICE DEL uuid | |
59 | DEVICE LIST | |
60 | DEVICE GET uuid | |
61 | DEVICE PUT uuid | |
62 | ||
63 | GLOBAL GET | |
64 | GLOBAL PUT | |
65 | ||
66 | LIST | |
67 | LIST LOG uuid | |
68 | ||
69 | PING | |
70 | ||
71 | PROFILE uuid,name | |
72 | PROFILE ADD name | |
73 | PROFILE DEL uuid | |
74 | PROFILE LIST | |
75 | PROFILE GET uuid | |
76 | PROFILE PUT uuid | |
77 | PROFILE GETS uuid | |
78 | PROFILE PUTS uuid | |
79 | ||
80 | SIMULATOR ADD name | |
81 | SIMULATOR DEL uuid | |
82 | SIMULATOR LIST | |
83 | SIMULATOR GET uuid | |
84 | SIMULATOR PUT uuid | |
85 | ||
86 | UNIT ADD name | |
87 | UNIT DEL uuid | |
88 | UNIT LIST | |
89 | UNIT GET uuid | |
90 | UNIT PUT uuid | |
91 | ||
92 | ||
93 | ||
94 | Response codes: | |
95 | ||
96 | 100 Help text follows | |
97 | 101 PONG | |
98 | 201 Information follows | |
99 | 211 Device %s added | |
100 | 211 Device %s deleted | |
101 | 211 Profile %s added | |
102 | 211 Profile %s deleted | |
103 | 211 Unit %s added | |
104 | 211 Unit %s deleted | |
105 | 212 Archive directory follows: | |
106 | 212 Archive file follows: | |
107 | 212 Devices list follows: | |
108 | 212 Fermenter list follows: | |
109 | 212 Logfile list follows: | |
110 | 212 Profiles list follows: | |
111 | 213 Device record follows: | |
112 | 213 Global Settings record follows: | |
113 | 213 Profile record follows: | |
114 | 213 Unit listing follows: | |
115 | 215 Profile steps follow: | |
116 | 219 Accepted Device record | |
117 | 219 Accepted Global record | |
118 | 219 Accepted Profile record | |
119 | 219 Accepted Profile steps | |
120 | 219 Accepted Unit record | |
121 | 403 LCD not available | |
122 | 440 No such device | |
123 | 440 No such file | |
124 | 440 No such profile | |
125 | 440 No such simulator | |
126 | 440 No such unit | |
127 | 441 Maximum simulators reached | |
128 | 500 Unknown command | |
129 | 501 Subcommand missing | |
130 | 502 Parameter missing | |
131 | 503 Parameter error | |
132 | 504 Subcommand error | |
133 | 518 recfrom(): %s | |
134 | ||
135 | ||
136 | ||
137 | 6. PID adjustments. | |
138 | ||
363
468ec0d96cce
Back to the old PID algorythm. Version 0.3.1.
Michiel Broek <mbroek@mbse.eu>
parents:
335
diff
changeset
|
139 | * Start with pGain, dGain and iGain set to 0. |
335 | 140 | * Increase Kp until small oscillation. |
141 | * Increase Kd until a little damping. | |
142 | * Increase Ki after Kp and Kd are set until longterm convergence. | |
143 |