Rev 150 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | SVN | RSS feed
| Rev 150 | Rev 219 | ||
|---|---|---|---|
| Line 42... | Line 42... | ||
| 42 | * enabled, but global interrupts need to be enabled by the application. |
42 | * enabled, but global interrupts need to be enabled by the application. |
| 43 | */ |
43 | */ |
| 44 | void Timebase_Init() { |
44 | void Timebase_Init() { |
| 45 | 45 | ||
| 46 | #if defined(__AVR_ATmega8__) |
46 | #if defined(__AVR_ATmega8__) |
| - | 47 | #if TIMEBASE_PRESCALE = 64 |
|
| 47 | TCCR0 = (1<<CS01) | (1<<CS00); // prescaler: 64 |
48 | TCCR0 = (1<<CS01) | (1<<CS00); // prescaler: 64 |
| - | 49 | #elif TIMEBASE_PRESCALE = 256 |
|
| - | 50 | TCCR0 = (1<<CS02); // prescaler: 256 |
|
| - | 51 | #endif |
|
| 48 | TCNT0 = TIMEBASE_RELOAD; // set initial reload-value |
52 | TCNT0 = TIMEBASE_RELOAD; // set initial reload-value |
| 49 | TIFR |= (1<<TOV0); // clear overflow int. |
53 | TIFR |= (1<<TOV0); // clear overflow int. |
| 50 | TIMSK |= (1<<TOIE0); // enable overflow-interrupt |
54 | TIMSK |= (1<<TOIE0); // enable overflow-interrupt |
| 51 | #endif |
55 | #endif |
| 52 | 56 | ||
| 53 | #if defined(__AVR_ATmega88__) |
57 | #if defined(__AVR_ATmega88__) |
| - | 58 | #if TIMEBASE_PRESCALE == 64 |
|
| 54 | TCCR0B = (1<<CS01) | (1<<CS00); // prescaler: 64 |
59 | TCCR0B = (1<<CS01) | (1<<CS00); // prescaler: 64 |
| - | 60 | #elif TIMEBASE_PRESCALE == 256 |
|
| - | 61 | TCCR0B = (1<<CS02); // prescaler: 256 |
|
| - | 62 | #endif |
|
| 55 | TCNT0 = TIMEBASE_RELOAD; // set initial reload-value |
63 | TCNT0 = TIMEBASE_RELOAD; // set initial reload-value |
| 56 | TIFR0 |= (1<<TOV0); // clear overflow int. |
64 | TIFR0 |= (1<<TOV0); // clear overflow int. |
| 57 | TIMSK0 |= (1<<TOIE0); // enable overflow-interrupt |
65 | TIMSK0 |= (1<<TOIE0); // enable overflow-interrupt |
| 58 | #endif |
66 | #endif |
| 59 | } |
67 | } |