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comparison tempctrl.c @ 80:c8cd6dd74ca1

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Don't call wdt_reset() in the IRQ routine - it makes the WDT useless. Instead only call it as needed when talking to ROMs (which can take a while if you had several). This makes the WDT bite when a problem occurs with the RTC (still not sure what the actual problem is though)
author Daniel O'Connor <darius@dons.net.au>
date Wed, 06 May 2009 08:30:45 +0930
parents a1edf53d904e
children 781071a115be
comparison
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79:a1edf53d904e 80:c8cd6dd74ca1
160 * 160 *
161 * Update time counter 161 * Update time counter
162 */ 162 */
163 163
164 ISR(TIMER2_COMP_vect) { 164 ISR(TIMER2_COMP_vect) {
165 wdt_reset();
166
167 now.usec += 8000; /* 1000000 * 1 / F_CPU / 1024 / 125 */ 165 now.usec += 8000; /* 1000000 * 1 / F_CPU / 1024 / 125 */
168 while (now.usec > 1000000) { 166 while (now.usec > 1000000) {
169 now.usec -= 1000000; 167 now.usec -= 1000000;
170 now.sec++; 168 now.sec++;
171 } 169 }
225 if (settings.mode == TC_MODE_NOTHING) { 223 if (settings.mode == TC_MODE_NOTHING) {
226 nextstate = 'i'; 224 nextstate = 'i';
227 goto setstate; 225 goto setstate;
228 } 226 }
229 227
230 /* Update our temperatures */ 228 /* Update our temperatures
229 * Can take a while (800ms each!) so reset the WDT
230 */
231 wdt_reset();
231 tempt = OWGetTemp(settings.fermenter_ROM); 232 tempt = OWGetTemp(settings.fermenter_ROM);
233 wdt_reset();
232 fridge_temp = OWGetTemp(settings.fridge_ROM); 234 fridge_temp = OWGetTemp(settings.fridge_ROM);
235 wdt_reset();
233 ambient_temp = OWGetTemp(settings.ambient_ROM); 236 ambient_temp = OWGetTemp(settings.ambient_ROM);
237 wdt_reset();
234 238
235 /* We only care about this one, only update the value we decide on 239 /* We only care about this one, only update the value we decide on
236 * only if it is valid 240 * only if it is valid
237 */ 241 */
238 if (tempt > OW_TEMP_BADVAL) { 242 if (tempt > OW_TEMP_BADVAL) {