68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/**
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* @file audio-out.ino
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* @brief Sine wave playback for the Guition JC4880P443C_I_W (ESP32-P4)
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* onboard ES8311 codec + NS4150 speaker amp, via I2SCodecStream.
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*
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* There's no arduino-audio-driver board entry for this board, so this
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* uses arduino-audio-driver's `GenericES8311` (no predefined pins - the
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* same pattern the wiki documents for `GenericWM8960`/ES8388: `Wire`
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* is set up manually for codec I2C, and I2S pins are set directly on
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* the stream config).
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*
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* `GenericES8311` has no `PinFunction::PA` pin, so unlike a
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* board-specific entry it does not toggle the NS4150 amp-enable pin for
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* you - this file does that manually. PA_EN (GPIO11) is driven
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* active-HIGH, confirmed on real hardware.
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*
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* Dependencies:
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* - https://github.com/pschatzmann/arduino-audio-tools
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* - https://github.com/pschatzmann/arduino-audio-driver
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* @author Phil Schatzmann
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* @copyright GPLv3
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*/
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#include "AudioTools.h"
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#include "AudioTools/AudioLibs/I2SCodecStream.h"
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// Pins from guition-jc4880p4-bsp's board_p4_pins.h "Audio" section.
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constexpr int kPinI2sMclk = 13;
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constexpr int kPinI2sBck = 12;
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constexpr int kPinI2sWs = 10;
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constexpr int kPinI2sDout = 9; // P4 -> codec
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constexpr int kPinCodecScl = 8; // shared with GT911 touch bus
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constexpr int kPinCodecSda = 7;
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constexpr int kPinAmpEnable = 11; // NS4150 PA_EN, active-high
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AudioInfo info(44100, 2, 16);
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SineWaveGenerator<int16_t> sineWave;
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GeneratedSoundStream<int16_t> sound(sineWave);
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I2SCodecStream out(GenericES8311);
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StreamCopy copier(out, sound);
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void setup(void) {
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Serial.begin(115200);
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AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
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pinMode(kPinAmpEnable, OUTPUT);
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digitalWrite(kPinAmpEnable, HIGH); // enable NS4150
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Wire.begin(kPinCodecSda, kPinCodecScl);
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Serial.println("starting I2S...");
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auto config = out.defaultConfig(TX_MODE);
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config.copyFrom(info);
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config.pin_mck = kPinI2sMclk;
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config.pin_bck = kPinI2sBck;
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config.pin_ws = kPinI2sWs;
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config.pin_data = kPinI2sDout;
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if (!out.begin(config)) {
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Serial.println("error!");
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stop();
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}
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out.setVolume(0.5f);
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sineWave.begin(info, N_B4);
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Serial.println("started...");
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}
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void loop() { copier.copy(); }
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