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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 533 | arune | 1 | /** |
| 2 | * IR common driver, functions to be used in receiver and transmitter |
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| 3 | * |
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| 4 | * @date 2007-07-07 |
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| 5 | * |
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| 6 | * @author Anders Runeson |
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| 7 | * |
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| 8 | */ |
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| 9 | |||
| 10 | /*----------------------------------------------------------------------------- |
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| 11 | * Includes |
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| 12 | *---------------------------------------------------------------------------*/ |
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| 13 | #include <drivers/ir/ircommon.h> |
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| 14 | #include <avr/io.h> |
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| 15 | |||
| 16 | /*----------------------------------------------------------------------------- |
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| 17 | * Globals |
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| 18 | *---------------------------------------------------------------------------*/ |
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| 19 | |||
| 20 | /*----------------------------------------------------------------------------- |
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| 21 | * Prerequisites |
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| 22 | *---------------------------------------------------------------------------*/ |
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| 23 | |||
| 24 | |||
| 25 | /*----------------------------------------------------------------------------- |
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| 26 | * Public Functions |
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| 27 | *---------------------------------------------------------------------------*/ |
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| 28 | |||
| 29 | |||
| 30 | //TODO: skriv doxygen-header som för de andra funktionerna |
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| 31 | void initTimer(void) { |
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| 32 | //sätt upp timer |
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| 33 | #if defined(__AVR_ATmega8__) |
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| 34 | TCCR1B = (0<<CS12) | (1<<CS11) | (0<<CS10); // prescaler: 8 |
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| 35 | TIFR |= (1<<TOV1); // clear overflow flag. |
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| 36 | TCNT1 = 0; |
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| 37 | #endif |
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| 38 | #if defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) |
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| 39 | TCCR1B = (0<<CS12) | (1<<CS11) | (0<<CS10); // prescaler: 8 |
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| 40 | TIFR1 |= (1<<TOV1); // clear overflow flag. |
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| 41 | TCNT1 = 0; |
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| 42 | #endif |
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| 43 | } |
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| 44 | |||
| 45 | //TODO: skriv doxygen-header som för de andra funktionerna |
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| 46 | uint8_t isTimerOvfl(void) { |
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| 47 | #if defined(__AVR_ATmega8__) |
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| 48 | if (TIFR & (1<<TOV1)) return 1; |
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| 49 | #endif |
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| 50 | #if defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) |
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| 51 | if (TIFR1 & (1<<TOV1)) return 1; |
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| 52 | #endif |
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| 53 | |||
| 54 | return 0; |
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| 55 | } |
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| 56 | |||
| 57 | //TODO: skriv doxygen-header som för de andra funktionerna |
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| 58 | uint16_t getTimerVal(void) { |
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| 59 | #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) |
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| 60 | return TCNT1; |
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| 61 | #endif |
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| 62 | } |
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| 63 | |||
| 64 | //TODO: skriv doxygen-header som för de andra funktionerna |
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| 65 | void setTimerVal(uint16_t value) { |
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| 66 | #if defined(__AVR_ATmega8__) |
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| 67 | TCNT1 = value; |
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| 68 | TIFR |= (1<<TOV1); // clear overflow flag. |
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| 69 | #endif |
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| 70 | #if defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) |
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| 71 | TCNT1 = value; |
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| 72 | TIFR1 |= (1<<TOV1); // clear overflow flag. |
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| 73 | #endif |
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| 74 | } |
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| 547 | andfri | 75 |