Teo-CD
a7c2856ef6
Introduce the Speaker class to play audio from the SD card when detecting tags. The only audio supported is WAV. Audio playback is handled via interrupts, so it might try to read from the SD card at the same time as the LCD class is trying to read new frames. Update the LCD animation code to temporarily disable audio interrupts while reading from the SD card.
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
//
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// Created by Teo-CD on 22/10/23.
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//
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#ifndef JIN_BARBAPAPA_SPEAKER_H
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#define JIN_BARBAPAPA_SPEAKER_H
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#include <Arduino.h>
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#include <Audio.h>
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#include <SerialFlash.h>
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#include <SD.h>
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#include <SPI.h>
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#include <Wire.h>
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#include "Com.h"
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#include "IDs.h"
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#include "Pinout.h"
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static constexpr uint8_t audioMemReservation = 10;
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class Speaker {
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public:
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Speaker() : sd(SD) {};
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static void init();
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/** Play the entry sound for a specific tag ID. */
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void playNewSound(int8_t ID);
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/** Check if a sound and playing an disable the amp if not anymore. */
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bool checkPlayingAndDisable();
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private:
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SDClass &sd;
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/*
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* Below are members needed to set up the audio pipeline.
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* We need an input, output, and to connect them to one another.
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* We also need some specially reserved memory to store the data to playback.
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*/
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static audio_block_t audioMemory[audioMemReservation];
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static bool memoryInitialized;
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AudioPlaySdWav sdWavSource;
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AudioOutputI2S i2sOut;
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AudioConnection connectLeftChannels{sdWavSource, 0, i2sOut, 0};
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AudioConnection connectRightChannels{sdWavSource, 1, i2sOut, 1};
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};
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#endif //JIN_BARBAPAPA_SPEAKER_H
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