Subversion Repositories HomeAutomation

Rev

Rev 224 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | SVN | RSS feed

Rev 224 Rev 247
Line 25... Line 25...
25 
 
 25 
 
26 
 
 26 
 
27 
/*-----------------------------------------------------------------------------
 27 
/*-----------------------------------------------------------------------------
28 
 * Interrupt Service Routines
 28 
 * Interrupt Service Routines
29 
 *---------------------------------------------------------------------------*/
 29 
 *---------------------------------------------------------------------------*/
- 
 
 30 
#if defined(TIMER2)
- 
 
 31 
ISR(SIG_OVERFLOW2) {
- 
 
 32 
    TCNT2 = TIMEBASE_RELOAD;
- 
 
 33 
    gMilliSecTick++;
- 
 
 34 
}
- 
 
 35 
#else
30 
ISR(SIG_OVERFLOW0) {
 36 
ISR(SIG_OVERFLOW0) {
31 
    TCNT0 = TIMEBASE_RELOAD;
 37 
    TCNT0 = TIMEBASE_RELOAD;
32 
    gMilliSecTick++;
 38 
    gMilliSecTick++;
33 
}
 39 
}
- 
 
 40 
#endif
34 
 
 41 
 
35 
 
 42 
 
36 
/*-----------------------------------------------------------------------------
 43 
/*-----------------------------------------------------------------------------
37 
 * Public Functions
 44 
 * Public Functions
38 
 *---------------------------------------------------------------------------*/
 45 
 *---------------------------------------------------------------------------*/
39 
 
 46 
 
40 
/**
 47 
/**
41 
 * Initializes the timebase. The hardware timer interrupt source will be
 48 
 * Initializes the timebase. The hardware timer interrupt source will be
42 
 * enabled, but global interrupts need to be enabled by the application.
 49 
 * enabled, but global interrupts need to be enabled by the application.
43 
 */
 50 
 */
44 
void Timebase_Init() {
 51 
void Timebase_Init() {
- 
 
 52 
#if defined(TIMER2)
- 
 
 53 
    #if defined(__AVR_ATmega8__)
- 
 
 54 
    #if TIMEBASE_PRESCALE == 64
- 
 
 55 
    TCCR2 = (1<<CS21) | (1<<CS20);  // prescaler: 64
- 
 
 56 
    #elif TIMEBASE_PRESCALE == 256
- 
 
 57 
    TCCR2 = (1<<CS22);              // prescaler: 256
- 
 
 58 
    #endif
- 
 
 59 
    TCNT2 = TIMEBASE_RELOAD; // set initial reload-value
- 
 
 60 
    TIFR  |= (1<<TOV2);  // clear overflow int.
- 
 
 61 
    TIMSK |= (1<<TOIE2); // enable overflow-interrupt
- 
 
 62 
    #endif
45 
   
 63 
   
- 
 
 64 
    #if defined(__AVR_ATmega88__)
- 
 
 65 
    #if TIMEBASE_PRESCALE == 64
- 
 
 66 
    TCCR2B = (1<<CS21) | (1<<CS20); // prescaler: 64
- 
 
 67 
    #elif TIMEBASE_PRESCALE == 256
- 
 
 68 
    TCCR2B = (1<<CS22);             // prescaler: 256
- 
 
 69 
    #endif
- 
 
 70 
    TCNT2 = TIMEBASE_RELOAD; // set initial reload-value
- 
 
 71 
    TIFR2  |= (1<<TOV2);  // clear overflow int.
- 
 
 72 
    TIMSK2 |= (1<<TOIE2); // enable overflow-interrupt
- 
 
 73 
    #endif
- 
 
 74 
#else /* Use timer0 */
46 
    #if defined(__AVR_ATmega8__)
 75 
    #if defined(__AVR_ATmega8__)
47 
    #if TIMEBASE_PRESCALE == 64
 76 
    #if TIMEBASE_PRESCALE == 64
48 
    TCCR0 = (1<<CS01) | (1<<CS00);  // prescaler: 64
 77 
    TCCR0 = (1<<CS01) | (1<<CS00);  // prescaler: 64
49 
    #elif TIMEBASE_PRESCALE == 256
 78 
    #elif TIMEBASE_PRESCALE == 256
50 
    TCCR0 = (1<<CS02);              // prescaler: 256
 79 
    TCCR0 = (1<<CS02);              // prescaler: 256
51 
    #endif
 80 
    #endif
52 
    TCNT0 = TIMEBASE_RELOAD; // set initial reload-value
 81 
    TCNT0 = TIMEBASE_RELOAD; // set initial reload-value
53 
    TIFR  |= (1<<TOV0);  // clear overflow int.
 82 
    TIFR  |= (1<<TOV0);  // clear overflow int.
54 
    TIMSK |= (1<<TOIE0); // enable overflow-interrupt
 83 
    TIMSK |= (1<<TOIE0); // enable overflow-interrupt
55 
    #endif
 84 
    #endif
56 
   
 85 
   
57 
    #if defined(__AVR_ATmega88__)
 86 
    #if defined(__AVR_ATmega88__)
Line 61... Line 90...
61 
    TCCR0B = (1<<CS02);             // prescaler: 256
 90 
    TCCR0B = (1<<CS02);             // prescaler: 256
62 
    #endif
 91 
    #endif
63 
    TCNT0 = TIMEBASE_RELOAD; // set initial reload-value
 92 
    TCNT0 = TIMEBASE_RELOAD; // set initial reload-value
64 
    TIFR0  |= (1<<TOV0);  // clear overflow int.
 93 
    TIFR0  |= (1<<TOV0);  // clear overflow int.
65 
    TIMSK0 |= (1<<TOIE0); // enable overflow-interrupt
 94 
    TIMSK0 |= (1<<TOIE0); // enable overflow-interrupt
- 
 
 95 
    #endif
66 
    #endif
 96 
#endif
67 
}
 97 
}
68 
 
 98 
 
69 
 
 99 
 
70 
/**
 100 
/**