mirror of https://github.com/JorjBauer/aiie.git
51 lines
922 B
C++
51 lines
922 B
C++
#include <Arduino.h>
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#include "teensy-speaker.h"
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#include "globals.h"
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TeensySpeaker::TeensySpeaker(uint8_t pinNum) : PhysicalSpeaker()
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{
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toggleState = false;
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needsToggle = false;
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speakerPin = pinNum;
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pinMode(speakerPin, OUTPUT); // analog speaker output, used as digital volume control
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mixerValue = numMixed = 0;
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}
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TeensySpeaker::~TeensySpeaker()
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{
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}
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void TeensySpeaker::toggle()
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{
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needsToggle = true;
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}
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void TeensySpeaker::maintainSpeaker(uint32_t c)
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{
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if (needsToggle) {
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toggleState = !toggleState;
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needsToggle = false;
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}
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mixerValue += (toggleState ? 0x1FF : 0x00);
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mixerValue >>= (16-g_volume);
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// FIXME: glad it's DAC0 and all, but... how does that relate to the pin passed in the constructor?
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analogWriteDAC0(mixerValue);
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}
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void TeensySpeaker::beginMixing()
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{
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mixerValue = 0;
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numMixed = 0;
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}
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void TeensySpeaker::mixOutput(uint8_t v)
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{
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mixerValue += v;
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numMixed++;
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}
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