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comparison tempctrl.c @ 46:fb272cb82bcb

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Add watchdog reset to timer IRQ. Swap heat and cool bits by default. Init to INT32_MIN so we don't get odd behaviour at startup. Print out mode in tc list. Silence compiler warning regarding PROGMEM pointers.
author darius@Inchoate
date Mon, 20 Oct 2008 22:21:21 +1030
parents f219538d6ea7
children 91e06007fe23
comparison
equal deleted inserted replaced
45:efd44dc40934 46:fb272cb82bcb
30 #include <stdint.h> 30 #include <stdint.h>
31 #include <stdlib.h> 31 #include <stdlib.h>
32 #include <avr/interrupt.h> 32 #include <avr/interrupt.h>
33 #include <avr/pgmspace.h> 33 #include <avr/pgmspace.h>
34 #include <avr/eeprom.h> 34 #include <avr/eeprom.h>
35 #include <avr/wdt.h>
35 #include <util/crc16.h> 36 #include <util/crc16.h>
36 37
37 #include "cons.h" 38 #include "cons.h"
38 #include "1wire.h" 39 #include "1wire.h"
39 #include "tempctrl.h" 40 #include "tempctrl.h"
101 .mincoolontime = 300, 102 .mincoolontime = 300,
102 .mincoolofftime = 600, 103 .mincoolofftime = 600,
103 .minheatontime = 60, 104 .minheatontime = 60,
104 .minheatofftime = 60, 105 .minheatofftime = 60,
105 .mode = TC_MODE_AUTO, 106 .mode = TC_MODE_AUTO,
106 .coolbits = _BV(7), 107 .coolbits = _BV(6),
107 .heatbits = _BV(6), 108 .heatbits = _BV(7),
108 .idlebits = 0x00, 109 .idlebits = 0x00,
109 .check_interval = 10, 110 .check_interval = 10,
110 .stale_factor = 3 111 .stale_factor = 3
111 }; 112 };
112 113
113 /* Local variable declarations */ 114 /* Local variable declarations */
114 volatile static time_t now; 115 volatile static time_t now;
115 116
116 /* Local function prototypes */ 117 /* Local function prototypes */
117 static int gettemp(const PROGMEM char *name, uint8_t *ROM, int16_t *temp, uint8_t last); 118 static int gettemp(const char *name, uint8_t *ROM, int16_t *temp, uint8_t last);
118 static void tempctrl_load_or_init_settings(void); 119 static void tempctrl_load_or_init_settings(void);
119 static void tempctrl_default_settings(void); 120 static void tempctrl_default_settings(void);
120 static void tempctrl_write_settings(void); 121 static void tempctrl_write_settings(void);
121 static void setstate(char state); 122 static void setstate(char state);
122 static const PROGMEM char*state2long(char s); 123 static const PROGMEM char*state2long(char s);
152 * 153 *
153 * Update time counter 154 * Update time counter
154 */ 155 */
155 156
156 ISR(TIMER0_COMP_vect) { 157 ISR(TIMER0_COMP_vect) {
158 wdt_reset();
159
157 now.usec += 8000; /* 1000000 * 1 / F_CPU / 1024 / 125 */ 160 now.usec += 8000; /* 1000000 * 1 / F_CPU / 1024 / 125 */
158 while (now.usec > 1000000) { 161 while (now.usec > 1000000) {
159 now.usec -= 1000000; 162 now.usec -= 1000000;
160 now.sec++; 163 now.sec++;
161 } 164 }
170 */ 173 */
171 void 174 void
172 tempctrl_update(void) { 175 tempctrl_update(void) {
173 /* State variables */ 176 /* State variables */
174 static int32_t checktime = 0; // Time of next check 177 static int32_t checktime = 0; // Time of next check
175 static int32_t lastdata = -100000; // Last time we got data 178 static int32_t lastdata = INT32_MIN; // Last time we got data
176 179
177 static int16_t fermenter_temp = 0; // Fermenter temperature 180 static int16_t fermenter_temp = 0; // Fermenter temperature
178 static int16_t fridge_temp = 0; // Fridge temperature 181 static int16_t fridge_temp = 0; // Fridge temperature
179 static int16_t ambient_temp = 0; // Ambient temperature 182 static int16_t ambient_temp = 0; // Ambient temperature
180 // These are inited like this so we will still heat/cool when 183 static int32_t lastheaton = INT32_MIN; // Last time the heater was on
181 // now < settings.minheatofftime 184 static int32_t lastheatoff = INT32_MIN;// Last time the heater was off
182 static int32_t lastheaton = -100000; // Last time the heater was on 185 static int32_t lastcoolon = INT32_MIN; // Last time the cooler was on
183 static int32_t lastheatoff = -100000; // Last time the heater was off 186 static int32_t lastcooloff = INT32_MIN;// Last time the cooler was off
184 static int32_t lastcoolon = -100000; // Last time the cooler was on
185 static int32_t lastcooloff = -100000; // Last time the cooler was off
186 static char currstate = 'i'; // Current state 187 static char currstate = 'i'; // Current state
188 /* We init to times to INT32_MIN so that things function properly when
189 * now < settings.minheat/cool/on/offtime */
187 190
188 /* Temporary variables */ 191 /* Temporary variables */
189 int32_t t; 192 int32_t t;
190 int16_t diff; 193 int16_t diff;
191 char nextstate; 194 char nextstate;
312 * Log a temperature & store it if valid 315 * Log a temperature & store it if valid
313 * 316 *
314 * Returns 1 if it was valid, 0 otherwise 317 * Returns 1 if it was valid, 0 otherwise
315 */ 318 */
316 static int 319 static int
317 gettemp(const PROGMEM char *name, uint8_t *ROM, int16_t *temp, uint8_t last) { 320 gettemp(const char *name, uint8_t *ROM, int16_t *temp, uint8_t last) {
318 int16_t tmp; 321 int16_t tmp;
319 322
320 tmp = OWGetTemp(ROM); 323 tmp = OWGetTemp(ROM);
321 printf_P(PSTR("%S: "), name); 324 printf_P(PSTR("%S: "), name);
322 if (tmp > OW_TEMP_BADVAL) { 325 if (tmp > OW_TEMP_BADVAL) {
470 } 473 }
471 if (!strcasecmp_P(cmd, PSTR("list"))) { 474 if (!strcasecmp_P(cmd, PSTR("list"))) {
472 printf_P(PSTR("Fermenter ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" 475 printf_P(PSTR("Fermenter ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n"
473 "Fridge ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" 476 "Fridge ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n"
474 "Ambient ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n" 477 "Ambient ROM ID %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\r\n"
475 "Target - %d, Hystersis - %d\r\n" 478 "Mode - %c, Target - %d, Hystersis - %d\r\n"
476 "Min heat overshoot - %d, Min cool overshoot - %d\r\n" 479 "Min heat overshoot - %d, Min cool overshoot - %d\r\n"
477 "Min cool on time - %d, Min cool off time - %d\r\n" 480 "Min cool on time - %d, Min cool off time - %d\r\n"
478 "Min heat on time - %d, Min heat off time - %d\r\n"), 481 "Min heat on time - %d, Min heat off time - %d\r\n"),
479 settings.fermenter_ROM[0], settings.fermenter_ROM[1], settings.fermenter_ROM[2], settings.fermenter_ROM[3], 482 settings.fermenter_ROM[0], settings.fermenter_ROM[1], settings.fermenter_ROM[2], settings.fermenter_ROM[3],
480 settings.fermenter_ROM[4], settings.fermenter_ROM[5], settings.fermenter_ROM[6], settings.fermenter_ROM[7], 483 settings.fermenter_ROM[4], settings.fermenter_ROM[5], settings.fermenter_ROM[6], settings.fermenter_ROM[7],
481 settings.fridge_ROM[0], settings.fridge_ROM[1], settings.fridge_ROM[2], settings.fridge_ROM[3], 484 settings.fridge_ROM[0], settings.fridge_ROM[1], settings.fridge_ROM[2], settings.fridge_ROM[3],
482 settings.fridge_ROM[4], settings.fridge_ROM[5], settings.fridge_ROM[6], settings.fridge_ROM[7], 485 settings.fridge_ROM[4], settings.fridge_ROM[5], settings.fridge_ROM[6], settings.fridge_ROM[7],
483 settings.ambient_ROM[0], settings.ambient_ROM[1], settings.ambient_ROM[2], settings.ambient_ROM[3], 486 settings.ambient_ROM[0], settings.ambient_ROM[1], settings.ambient_ROM[2], settings.ambient_ROM[3],
484 settings.ambient_ROM[4], settings.ambient_ROM[5], settings.ambient_ROM[6], settings.ambient_ROM[7], 487 settings.ambient_ROM[4], settings.ambient_ROM[5], settings.ambient_ROM[6], settings.ambient_ROM[7],
485 settings.target_temp, settings.hysteresis, 488 settings.mode, settings.target_temp, settings.hysteresis,
486 settings.minheatovershoot, settings.mincoolovershoot, 489 settings.minheatovershoot, settings.mincoolovershoot,
487 settings.mincoolontime, settings.minheatontime, 490 settings.mincoolontime, settings.minheatontime,
488 settings.minheatontime, settings.minheatofftime); 491 settings.minheatontime, settings.minheatofftime);
489 return; 492 return;
490 } 493 }