scoutece / paintboard / code / geiger.c @ 11c945d9
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#include <avr/io.h> |
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#include <avr/interrupt.h> |
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#include <stdlib.h> |
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#include "geiger.h" |
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int16_t count; |
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int16_t rate; |
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int16_t ticks; |
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void geiger_init()
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{
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EICRA |= _BV(ISC11) | _BV(ISC10); |
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EIMSK |= _BV(INT1); |
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} |
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void geiger_tick()
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{
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ticks++; |
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if(ticks==100) |
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{
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ticks=0;
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rate = count*3;
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count = 0;
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} |
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} |
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int16_t geiger_rate() |
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{
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return (rate==0)?count:rate; |
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} |
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ISR (INT1_vect) |
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{
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count++; |
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} |