36 lines
1017 B
C++
36 lines
1017 B
C++
#include "Marlin.h"
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#include "buzzer.h"
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#include "ultralcd.h"
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#if HAS_BUZZER
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void buzz(long duration, uint16_t freq) {
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if (freq > 0) {
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#if ENABLED(LCD_USE_I2C_BUZZER)
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lcd_buzz(duration, freq);
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#elif PIN_EXISTS(BEEPER) // on-board buzzers have no further condition
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SET_OUTPUT(BEEPER_PIN);
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#if ENABLED(SPEAKER) // a speaker needs a AC ore a pulsed DC
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//tone(BEEPER_PIN, freq, duration); // needs a PWMable pin
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unsigned int delay = 1000000 / freq / 2;
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int i = duration * freq / 1000;
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while (i--) {
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WRITE(BEEPER_PIN, HIGH);
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delayMicroseconds(delay);
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WRITE(BEEPER_PIN, LOW);
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delayMicroseconds(delay);
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}
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#else // buzzer has its own resonator - needs a DC
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WRITE(BEEPER_PIN, HIGH);
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delay(duration);
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WRITE(BEEPER_PIN, LOW);
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#endif
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#else
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delay(duration);
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#endif
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}
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else {
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delay(duration);
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}
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}
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#endif
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