Created
February 2, 2015 19:45
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ATtiny watchdog
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| //**************************************************************** | |
| // 0=16ms, 1=32ms,2=64ms,3=128ms,4=250ms,5=500ms | |
| // 6=1 sec,7=2 sec, 8=4 sec, 9= 8sec | |
| void setup_watchdog(int ii) { | |
| byte bb; | |
| int ww; | |
| if (ii > 9 ) ii=9; | |
| bb=ii & 7; | |
| if (ii > 7) bb|= (1<<5); | |
| bb|= (1<<WDCE); | |
| ww=bb; | |
| MCUSR &= ~(1<<WDRF); | |
| // start timed sequence | |
| WDTCR |= (1<<WDCE) | (1<<WDE); | |
| // set new watchdog timeout value | |
| WDTCR = bb; | |
| WDTCR |= _BV(WDIE); | |
| } |
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