Mercurial > ~darius > hgwebdir.cgi > tempctrl
annotate tempctrl.c @ 51:cb184206344d
Rejig command parsing and assume the compiler isn't dumb (eg it can reuse
stack variables).
| author | darius@Inchoate |
|---|---|
| date | Wed, 29 Oct 2008 16:09:55 +1030 |
| parents | a13e0ccc1d2d |
| children | 58f1ec46bff6 |
| rev | line source |
|---|---|
| 41 | 1 /* |
| 2 * Temperature control logic | |
| 3 * | |
| 4 * Copyright (c) 2008 | |
| 5 * Daniel O'Connor <darius@dons.net.au>. All rights reserved. | |
| 6 * | |
| 7 * Redistribution and use in source and binary forms, with or without | |
| 8 * modification, are permitted provided that the following conditions | |
| 9 * are met: | |
| 10 * 1. Redistributions of source code must retain the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer. | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
| 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 26 * SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdint.h> | |
| 31 #include <stdlib.h> | |
|
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32 #include <string.h> |
| 41 | 33 #include <avr/interrupt.h> |
| 34 #include <avr/pgmspace.h> | |
| 35 #include <avr/eeprom.h> | |
| 46 | 36 #include <avr/wdt.h> |
| 41 | 37 #include <util/crc16.h> |
| 38 | |
| 39 #include "cons.h" | |
| 40 #include "1wire.h" | |
| 41 #include "tempctrl.h" | |
| 42 | |
| 43 typedef struct { | |
| 44 int32_t sec; | |
| 45 int32_t usec; | |
| 46 } time_t; | |
| 47 | |
| 48 /* Holds all the settings needed */ | |
| 49 typedef struct { | |
| 50 uint8_t fermenter_ROM[8]; | |
| 51 uint8_t fridge_ROM[8]; | |
| 52 uint8_t ambient_ROM[8]; | |
| 53 int16_t target_temp; | |
| 54 uint16_t hysteresis; | |
| 55 | |
| 56 /* How much to under/overshoot on heating/cooling */ | |
| 57 int16_t minheatovershoot; | |
| 58 int16_t mincoolovershoot; | |
| 59 | |
| 60 /* Minimum time the cooler can be on/off */ | |
| 61 int16_t mincoolontime; | |
| 62 int16_t mincoolofftime; | |
| 63 | |
| 64 /* Minimum time the heater can be on/off */ | |
| 65 int16_t minheatontime; | |
| 66 int16_t minheatofftime; | |
| 67 | |
| 68 #define TC_MODE_AUTO 'a' /* Automatic control */ | |
| 69 #define TC_MODE_HEAT 'h' /* Force heating */ | |
| 70 #define TC_MODE_COOL 'c' /* Force cooling */ | |
| 71 #define TC_MODE_IDLE 'i' /* Force idle */ | |
| 72 #define TC_MODE_NOTHING 'n' /* Do nothing (like idle but log nothing) */ | |
| 73 char mode; | |
| 74 | |
| 75 /* Bit patterns for various modes */ | |
| 76 uint8_t coolbits; | |
| 77 uint8_t heatbits; | |
| 78 uint8_t idlebits; | |
| 79 | |
| 80 /* Check/stale times */ | |
| 81 int16_t check_interval; | |
| 82 int16_t stale_factor; | |
| 83 } __attribute__((packed)) settings_t; | |
| 84 | |
| 85 /* Current settings in RAM */ | |
| 86 static settings_t settings; | |
| 87 | |
| 88 /* Our map of EEPROM */ | |
| 89 struct { | |
| 90 settings_t settings; | |
| 91 uint16_t crc; | |
| 92 } ee_area __attribute__((section(".eeprom"))); | |
| 93 | |
| 94 /* Defaults that are shoved into EEPROM if it isn't inited */ | |
| 95 const PROGMEM settings_t default_settings = { | |
| 96 .fermenter_ROM = { 0x10, 0xeb, 0x48, 0x21, 0x01, 0x08, 0x00, 0xdf }, | |
| 97 .fridge_ROM = { 0x10, 0xa6, 0x2a, 0xc4, 0x00, 0x08, 0x00, 0x11 }, | |
| 98 .ambient_ROM = { 0x10, 0x97, 0x1b, 0xfe, 0x00, 0x08, 0x00, 0xd1 }, | |
| 99 .target_temp = 1400, | |
| 100 .hysteresis = 100, | |
| 101 .minheatovershoot = 50, | |
| 102 .mincoolovershoot = -50, | |
| 103 .mincoolontime = 300, | |
| 104 .mincoolofftime = 600, | |
| 105 .minheatontime = 60, | |
| 106 .minheatofftime = 60, | |
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107 .mode = TC_MODE_IDLE, |
| 46 | 108 .coolbits = _BV(6), |
| 109 .heatbits = _BV(7), | |
| 41 | 110 .idlebits = 0x00, |
| 111 .check_interval = 10, | |
| 112 .stale_factor = 3 | |
| 113 }; | |
| 114 | |
| 115 /* Local variable declarations */ | |
| 116 volatile static time_t now; | |
| 117 | |
| 118 /* Local function prototypes */ | |
| 119 static void tempctrl_load_or_init_settings(void); | |
| 120 static void tempctrl_default_settings(void); | |
| 121 static void tempctrl_write_settings(void); | |
| 122 static void setstate(char state); | |
| 123 static const PROGMEM char*state2long(char s); | |
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124 static void printtemp(char *name, int tmp, char *trailer); |
| 41 | 125 |
| 126 /* | |
| 127 * tempctrl_init | |
| 128 * | |
| 129 * Setup timer, should be called with interrupts disabled. | |
| 130 * | |
| 131 */ | |
| 132 void | |
| 133 tempctrl_init(void) { | |
| 134 /* Setup timer */ | |
| 135 /* 16Mhz / 1024 = 15625 Hz / 125 = 125 Hz = IRQ every 8 ms */ | |
| 136 | |
| 137 /* CTC mode, no output on pin, Divide clock by 1024 */ | |
| 138 TCCR0 = _BV(WGM01)| _BV(CS02) | _BV(CS00); | |
| 139 | |
| 140 /* Compare with ... */ | |
| 141 OCR0 = 125; | |
| 142 | |
| 143 /* Enable interrupt for match on A */ | |
| 144 TIMSK = _BV(OCIE0); | |
| 145 | |
| 146 now.sec = 0; | |
| 147 now.usec = 0; | |
| 148 | |
| 149 tempctrl_load_or_init_settings(); | |
| 150 } | |
| 151 | |
| 152 /* | |
| 153 * Timer 0 Compare IRQ | |
| 154 * | |
| 155 * Update time counter | |
| 156 */ | |
| 157 | |
| 158 ISR(TIMER0_COMP_vect) { | |
| 46 | 159 wdt_reset(); |
| 160 | |
| 41 | 161 now.usec += 8000; /* 1000000 * 1 / F_CPU / 1024 / 125 */ |
| 162 while (now.usec > 1000000) { | |
| 163 now.usec -= 1000000; | |
| 164 now.sec++; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 /* | |
| 169 * tempctrl_update | |
| 170 * | |
| 171 * Should be called in a normal context, could run things that take a long time. | |
| 172 * (ie 1wire bus stuff) | |
| 173 * | |
| 174 */ | |
| 175 void | |
| 176 tempctrl_update(void) { | |
| 177 /* State variables */ | |
| 178 static int32_t checktime = 0; // Time of next check | |
| 46 | 179 static int32_t lastdata = INT32_MIN; // Last time we got data |
| 41 | 180 |
| 181 static int16_t fermenter_temp = 0; // Fermenter temperature | |
| 182 static int16_t fridge_temp = 0; // Fridge temperature | |
| 183 static int16_t ambient_temp = 0; // Ambient temperature | |
| 46 | 184 static int32_t lastheaton = INT32_MIN; // Last time the heater was on |
| 185 static int32_t lastheatoff = INT32_MIN;// Last time the heater was off | |
| 186 static int32_t lastcoolon = INT32_MIN; // Last time the cooler was on | |
| 187 static int32_t lastcooloff = INT32_MIN;// Last time the cooler was off | |
| 41 | 188 static char currstate = 'i'; // Current state |
| 46 | 189 /* We init to times to INT32_MIN so that things function properly when |
| 190 * now < settings.minheat/cool/on/offtime */ | |
| 41 | 191 |
| 192 /* Temporary variables */ | |
| 193 int32_t t; | |
| 194 int16_t diff; | |
| 195 char nextstate; | |
| 196 int forced; | |
| 197 int stale; | |
| 198 | |
| 199 t = gettod(); | |
| 200 /* Time to check temperatures? */ | |
| 201 if (t < checktime) | |
| 202 return; | |
| 203 | |
| 204 checktime = t + settings.check_interval; | |
| 205 | |
| 206 /* Don't do any logging, just force idle and leave */ | |
| 207 if (settings.mode == TC_MODE_NOTHING) { | |
| 208 nextstate = 'i'; | |
| 209 goto setstate; | |
| 210 } | |
| 211 | |
| 212 /* Update our temperatures */ | |
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213 fermenter_temp = OWGetTemp(settings.fermenter_ROM); |
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214 fridge_temp = OWGetTemp(settings.fridge_ROM); |
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215 ambient_temp = OWGetTemp(settings.ambient_ROM); |
| 41 | 216 |
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217 if (fermenter_temp > OW_TEMP_BADVAL) |
| 41 | 218 lastdata = t; |
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219 |
| 41 | 220 /* Check for stale data */ |
| 221 if (lastdata + (settings.check_interval * settings.stale_factor) < t) | |
| 222 stale = 1; | |
| 223 else | |
| 224 stale = 0; | |
| 225 | |
| 226 /* Default to remaining as we are */ | |
| 227 nextstate = '-'; | |
| 228 | |
| 229 /* Temperature diff, -ve => too cold, +ve => too warm */ | |
| 230 diff = fermenter_temp - settings.target_temp; | |
| 231 | |
| 232 switch (currstate) { | |
| 233 case 'i': | |
| 234 /* If we're idle then only heat or cool if the temperate difference is out of the | |
| 235 * hysteresis band | |
| 236 */ | |
| 237 if (abs(diff) > settings.hysteresis) { | |
| 238 if (diff < 0 && settings.minheatofftime + lastheatoff < t) | |
| 239 nextstate = 'h'; | |
| 240 else if (diff > 0 && settings.mincoolofftime + lastcooloff < t) | |
| 241 nextstate = 'c'; | |
| 242 } | |
| 243 break; | |
| 244 | |
| 245 case 'c': | |
| 246 /* Work out if we should go idle (based on min on time & overshoot) */ | |
| 247 if (diff + settings.mincoolovershoot < 0 && | |
| 248 settings.mincoolontime + lastcoolon < t) | |
| 249 nextstate = 'i'; | |
| 250 break; | |
| 251 | |
| 252 case 'h': | |
| 253 if (diff - settings.minheatovershoot > 0 && | |
| 254 settings.minheatontime + lastheaton < t) | |
| 255 nextstate = 'i'; | |
| 256 break; | |
| 257 | |
| 258 default: | |
| 259 printf_P(PSTR("\r\nUnknown state %c, going to idle\n"), currstate); | |
| 260 nextstate = 'i'; | |
| 261 break; | |
| 262 } | |
| 263 | |
| 264 /* Override if we have stale data */ | |
| 265 if (stale) | |
| 266 nextstate = 'i'; | |
| 267 | |
| 268 /* Handle state forcing */ | |
| 269 if (settings.mode != TC_MODE_AUTO) | |
| 270 forced = 1; | |
| 271 else | |
| 272 forced = 0; | |
| 273 | |
| 274 if (settings.mode == TC_MODE_IDLE) | |
| 275 nextstate = 'i'; | |
| 276 else if (settings.mode == TC_MODE_HEAT) | |
| 277 nextstate = 'h'; | |
| 278 else if (settings.mode == TC_MODE_COOL) | |
| 279 nextstate = 'c'; | |
| 280 | |
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281 // Keep track of when we last turned things on or off |
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282 switch (nextstate) { |
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283 case 'c': |
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284 if (currstate == 'h') |
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285 lastheatoff = t; |
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286 lastcoolon = t; |
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287 break; |
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288 |
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289 case 'h': |
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290 if (currstate == 'c') |
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291 lastcooloff = t; |
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292 lastheaton = t; |
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293 break; |
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294 |
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295 default: |
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296 if (currstate == 'c') |
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297 lastcooloff = t; |
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298 if (currstate == 'h') |
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299 lastheatoff = t; |
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300 } |
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301 |
| 41 | 302 if (nextstate != '-') |
| 303 currstate = nextstate; | |
| 304 | |
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305 printf_P(PSTR("Time: %10ld, "), t); |
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306 printtemp(PSTR("Target"), settings.target_temp, PSTR(", ")); |
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307 printtemp(PSTR("Fermenter"), fermenter_temp, PSTR(", ")); |
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308 printtemp(PSTR("Fridge"), fridge_temp, PSTR(", ")); |
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309 printtemp(PSTR("Ambient"), ambient_temp, PSTR(", ")); |
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310 printf_P(PSTR("State: %S, Flags: %S%S\r\n"), state2long(currstate), |
| 41 | 311 forced ? PSTR("F") : PSTR(""), |
| 312 stale ? PSTR("S") : PSTR("")); | |
| 313 | |
| 314 setstate: | |
| 315 setstate(currstate); | |
| 316 } | |
| 317 | |
| 318 /* Return 'time of day' (really uptime) */ | |
| 319 int32_t | |
| 320 gettod(void) { | |
| 321 int32_t t; | |
| 322 | |
| 323 cli(); | |
| 324 t = now.sec; | |
| 325 sei(); | |
| 326 | |
| 327 return(t); | |
| 328 } | |
| 329 | |
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330 /* |
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331 * Print out temperature (or NA + error code) with specified trailer |
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332 */ |
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333 static void |
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334 printtemp(char *name, int tmp, char *trailer) { |
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335 if (tmp > OW_TEMP_BADVAL) |
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336 printf_P(PSTR("%S: %d.%02d%S"), name, GETWHOLE(tmp), GETFRAC(tmp), trailer); |
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337 else |
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338 printf_P(PSTR("%S: NA (%d)%S"), name, tmp, trailer); |
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339 } |
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340 |
| 41 | 341 /* Read the settings from EEPROM |
| 342 * If the CRC fails then reload from flash | |
| 343 */ | |
| 344 static void | |
| 345 tempctrl_load_or_init_settings(void) { | |
| 346 uint8_t *dptr; | |
| 347 uint16_t crc, strcrc; | |
| 348 int i; | |
| 349 | |
| 350 crc = 0; | |
| 351 eeprom_busy_wait(); | |
| 352 eeprom_read_block(&settings, &ee_area.settings, sizeof(settings_t)); | |
| 353 strcrc = eeprom_read_word(&ee_area.crc); | |
| 354 | |
| 355 dptr = (uint8_t *)&settings; | |
| 356 | |
| 357 for (i = 0; i < sizeof(settings_t); i++) | |
| 358 crc = _crc16_update(crc, dptr[i]); | |
| 359 | |
| 360 /* All OK? */ | |
| 361 if (crc == strcrc) | |
| 362 return; | |
| 363 | |
| 364 printf_P(PSTR("CRC mismatch got 0x%04x vs 0x%04x, setting defaults\r\n"), crc, strcrc); | |
| 365 tempctrl_default_settings(); | |
| 366 tempctrl_write_settings(); | |
| 367 } | |
| 368 | |
| 369 /* Load in the defaults from flash */ | |
| 370 static void | |
| 371 tempctrl_default_settings(void) { | |
| 372 memcpy_P(&settings, &default_settings, sizeof(settings_t)); | |
| 373 } | |
| 374 | |
| 375 /* Write the current settings out to EEPROM */ | |
| 376 static void | |
| 377 tempctrl_write_settings(void) { | |
| 378 uint16_t crc; | |
| 379 uint8_t *dptr; | |
| 380 int i; | |
| 381 | |
| 382 eeprom_busy_wait(); | |
| 383 eeprom_write_block(&settings, &ee_area.settings, sizeof(settings_t)); | |
| 384 | |
| 385 dptr = (uint8_t *)&settings; | |
| 386 crc = 0; | |
| 387 for (i = 0; i < sizeof(settings_t); i++) | |
| 388 crc = _crc16_update(crc, dptr[i]); | |
| 389 | |
| 390 eeprom_write_word(&ee_area.crc, crc); | |
| 391 } | |
| 392 | |
| 393 /* Set the relays to match the desired state */ | |
| 394 static void | |
| 395 setstate(char state) { | |
| 396 switch (state) { | |
| 397 case 'c': | |
| 398 PORTC = settings.coolbits; | |
| 399 break; | |
| 400 | |
| 401 case 'h': | |
| 402 PORTC = settings.heatbits; | |
| 403 break; | |
| 404 | |
| 405 default: | |
| 406 printf_P(PSTR("Unknown state %c, setting idle\r\n"), state); | |
| 407 /* fallthrough */ | |
| 408 | |
| 409 case 'i': | |
| 410 PORTC = settings.idlebits; | |
| 411 break; | |
| 412 } | |
| 413 } | |
| 414 | |
| 415 /* Handle user command | |
| 416 * | |
| 417 */ | |
| 418 void | |
| 419 tempctrl_cmd(char *buf) { | |
| 420 char cmd[6]; | |
| 421 int16_t data; | |
|
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422 uint8_t ROM[8]; |
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423 |
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424 if (sscanf_P(buf, PSTR("tc %5s"), cmd, &data) == 0) { |
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425 printf_P(PSTR("Unable to parse tc subcommand\r\n")); |
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426 return; |
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427 } |
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428 |
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429 if (!strcasecmp_P(cmd, PSTR("help"))) { |
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430 printf_P(PSTR( |
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431 "tc help This help\r\n" |
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432 "tc save Save settings to EEPROM\r\n" |
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433 "tc load Load or default settings from EEPROM\r\n" |
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434 "tc dflt Load defaults from flash\r\n" |
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435 "tc list List current settings\r\n" |
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436 "tc mode [achin] Change control mode, must be one of\r\n" |
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437 " a Auto\r\n" |
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438 " c Always cool\r\n" |
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439 " h Always heat\r\n" |
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440 " i Always idle\r\n" |
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441 " n Like idle but don't log anything\r\n" |
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442 "tc X Y Set X to Y where X is one of\r\n" |
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443 " targ Target temperature\r\n" |
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444 " hys Hysteresis range\r\n" |
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445 " mhov Minimum heat overshoot\r\n" |
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446 " mcov Minimum cool overshoot\r\n" |
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447 " mcon Minimum cool on time\r\n" |
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448 " mcoff Minimum cool off time\r\n" |
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449 " mhin Minimum heat on time\r\n" |
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450 " mhoff Minimum heat off time\r\n" |
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451 "tc A B Set temperature sensor ID\r\n" |
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452 " Where A is ferm, frg or amb\r\n" |
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453 " and B is of the form xx:xx:xx:xx:xx:xx:xx:xx\r\n" |
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454 "\r\n" |
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455 " Times are in seconds\r\n" |
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456 " Temperatures are in hundredths of degrees Celcius\r\n" |
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457 )); |
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458 return; |
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459 } |
| 41 | 460 |
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461 if (!strcasecmp_P(cmd, PSTR("save"))) { |
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462 tempctrl_write_settings(); |
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463 return; |
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464 } |
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465 if (!strcasecmp_P(cmd, PSTR("load"))) { |
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466 tempctrl_load_or_init_settings(); |
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467 return; |
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468 } |
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469 if (!strcasecmp_P(cmd, PSTR("dflt"))) { |
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470 tempctrl_default_settings(); |
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471 return; |
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472 } |
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473 if (!strcasecmp_P(cmd, PSTR("list"))) { |
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474 printf_P(PSTR("Fermenter ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" |
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475 "Fridge ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" |
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476 "Ambient ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" |
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477 "Mode - %c, Target - %d, Hystersis - %d\r\n" |
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478 "Min heat overshoot - %d, Min cool overshoot - %d\r\n" |
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479 "Min cool on time - %d, Min cool off time - %d\r\n" |
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480 "Min heat on time - %d, Min heat off time - %d\r\n"), |
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481 settings.fermenter_ROM[0], settings.fermenter_ROM[1], settings.fermenter_ROM[2], settings.fermenter_ROM[3], |
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482 settings.fermenter_ROM[4], settings.fermenter_ROM[5], settings.fermenter_ROM[6], settings.fermenter_ROM[7], |
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483 settings.fridge_ROM[0], settings.fridge_ROM[1], settings.fridge_ROM[2], settings.fridge_ROM[3], |
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484 settings.fridge_ROM[4], settings.fridge_ROM[5], settings.fridge_ROM[6], settings.fridge_ROM[7], |
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485 settings.ambient_ROM[0], settings.ambient_ROM[1], settings.ambient_ROM[2], settings.ambient_ROM[3], |
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486 settings.ambient_ROM[4], settings.ambient_ROM[5], settings.ambient_ROM[6], settings.ambient_ROM[7], |
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487 settings.mode, settings.target_temp, settings.hysteresis, |
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488 settings.minheatovershoot, settings.mincoolovershoot, |
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489 settings.mincoolontime, settings.minheatontime, |
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490 settings.minheatontime, settings.minheatofftime); |
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491 return; |
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492 } |
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493 if (!strcasecmp_P(cmd, PSTR("mode"))) { |
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494 switch (buf[8]) { |
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495 case TC_MODE_AUTO: |
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496 case TC_MODE_HEAT: |
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497 case TC_MODE_COOL: |
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498 case TC_MODE_IDLE: |
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499 case TC_MODE_NOTHING: |
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500 settings.mode = buf[8]; |
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501 break; |
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502 |
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503 default: |
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504 printf_P(PSTR("Unknown mode character '%c'\r\n"), buf[8]); |
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505 break; |
| 41 | 506 } |
|
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507 return; |
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508 } |
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509 if (!strcasecmp_P(cmd, PSTR("ferm")) || |
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510 !strcasecmp_P(cmd, PSTR("frg")) || |
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511 !strcasecmp_P(cmd, PSTR("amb"))) { |
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512 |
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513 if (sscanf_P((char *)cmd, PSTR("tc %5s %hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx:%hhx"), cmd, |
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514 &ROM[0], &ROM[1], &ROM[2], &ROM[3], |
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515 &ROM[4], &ROM[5], &ROM[6], &ROM[7]) != 9) { |
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516 printf_P(PSTR("Unable to parse ROM ID\r\n")); |
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517 } else { |
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518 if (!strcasecmp_P(cmd, PSTR("ferm"))) |
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519 memcpy(settings.fermenter_ROM, ROM, sizeof(ROM)); |
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520 if (!strcasecmp_P(cmd, PSTR("frg"))) |
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521 memcpy(settings.fridge_ROM, ROM, sizeof(ROM)); |
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522 if (!strcasecmp_P(cmd, PSTR("amb"))) |
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523 memcpy(settings.ambient_ROM, ROM, sizeof(ROM)); |
| 41 | 524 } |
| 525 } | |
| 526 | |
|
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527 if (sscanf_P(buf, PSTR("tc %5s %d"), cmd, &data) != 2) { |
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528 printf_P(PSTR("Unable to parse tc subcommand & value\r\n")); |
| 41 | 529 return; |
| 530 } | |
| 531 | |
| 532 if (!strcasecmp_P(cmd, PSTR("targ"))) { | |
| 533 settings.target_temp = data; | |
| 534 } else if (!strcasecmp_P(cmd, PSTR("hys"))) { | |
| 535 settings.hysteresis = data; | |
| 536 } else if (!strcasecmp_P(cmd, PSTR("mhov"))) { | |
| 537 settings.minheatovershoot = data; | |
| 538 } else if (!strcasecmp_P(cmd, PSTR("mcov"))) { | |
| 539 settings.mincoolovershoot = data; | |
| 540 } else if (!strcasecmp_P(cmd, PSTR("mcon"))) { | |
| 541 settings.mincoolontime = data; | |
| 542 } else if (!strcasecmp_P(cmd, PSTR("mcoff"))) { | |
| 543 settings.mincoolofftime = data; | |
| 544 } else if (!strcasecmp_P(cmd, PSTR("mhon"))) { | |
| 545 settings.minheatontime = data; | |
| 546 } else if (!strcasecmp_P(cmd, PSTR("mhoff"))) { | |
| 547 settings.minheatofftime = data; | |
| 548 } else { | |
| 549 printf_P(PSTR("Unknown setting\r\n")); | |
| 550 return; | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 static const PROGMEM char* | |
| 555 state2long(char s) { | |
| 556 switch (s) { | |
| 557 case 'i': | |
| 558 return PSTR("idle"); | |
| 559 break; | |
| 560 | |
| 561 case 'c': | |
| 562 return PSTR("cool"); | |
| 563 break; | |
| 564 | |
| 565 case 'h': | |
| 566 return PSTR("heat"); | |
| 567 break; | |
| 568 | |
| 569 case '-': | |
| 570 return PSTR("-"); | |
| 571 break; | |
| 572 | |
| 573 default: | |
| 574 return PSTR("unknown"); | |
| 575 break; | |
| 576 } | |
| 577 } | |
| 578 |