Revision 277
more cleanup
| buzzer.c | ||
|---|---|---|
| 53 | 53 |
**/ |
| 54 | 54 |
void buzzer_init( void ) |
| 55 | 55 |
{
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| 56 |
//NOTE: This is mostly handled by buzzer_Set_val for now
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| 57 |
// Set pin B7 to output - B7 is buzzer pin
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| 58 |
//DDRB |= _BV(DDB7);
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| 59 |
//Fast PWM Mode, Clear OCR0 on compare match and set at bottom, clock/64
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| 60 |
//TCCR2 = _BV(COM20) | _BV(WGM21) | _BV(CS22);
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| 56 |
//NOTE: This is mostly handled by buzzer_Set_val for now
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| 57 |
// Set pin B7 to output - B7 is buzzer pin
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//DDRB |= _BV(DDB7);
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//Fast PWM Mode, Clear OCR0 on compare match and set at bottom, clock/64
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//TCCR2 = _BV(COM20) | _BV(WGM21) | _BV(CS22);
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| 61 | 61 |
} |
| 62 | 62 |
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| 63 | 63 |
/** |
| ... | ... | |
| 71 | 71 |
**/ |
| 72 | 72 |
void buzzer_set_val(unsigned int buzz_value) |
| 73 | 73 |
{
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TCCR2 = _BV(COM20) | _BV(WGM21) | _BV(CS22);
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DDRB |= _BV(DDB7);
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OCR2 = buzz_value;
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TCCR2 = _BV(COM20) | _BV(WGM21) | _BV(CS22);
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DDRB |= _BV(DDB7);
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| 76 |
OCR2 = buzz_value;
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| 77 | 77 |
} |
| 78 | 78 |
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| 79 | 79 |
/** |
| ... | ... | |
| 92 | 92 |
|
| 93 | 93 |
buzz_value = 62500/buzz_freq - 1; |
| 94 | 94 |
|
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if(buzz_value > 255){
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| 95 |
if (buzz_value > 255) {
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| 96 | 96 |
buzz_value = 255; |
| 97 |
}else if(buzz_value < 0){
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| 97 |
} else if (buzz_value < 0) {
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| 98 | 98 |
buzz_value = 0; |
| 99 | 99 |
} |
| 100 | 100 |
|
| ... | ... | |
| 134 | 134 |
} |
| 135 | 135 |
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| 136 | 136 |
/** @} **/ // end buzzer group |
| 137 |
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