| 60 | #if ARDUINO_I2S_FULLY_SUPPORTED |
| 61 | |
| 62 | class Arduino_I2S_Audio : public audio::IInput { |
| 63 | public: |
| 64 | Arduino_I2S_Audio(const audio::ConfigI2S &config) |
| 65 | : mConfig(config), mHasError(false), mTotalSamplesRead(0), mInitialized(false) {} |
| 66 | |
| 67 | ~Arduino_I2S_Audio() { |
| 68 | stop(); |
| 69 | } |
| 70 | |
| 71 | void start() FL_NOEXCEPT override { |
| 72 | if (mInitialized) { |
| 73 | FL_WARN("Arduino I2S is already initialized"); |
| 74 | return; |
| 75 | } |
| 76 | |
| 77 | // Initialize Arduino I2S library using standard API |
| 78 | // WARNING: Arduino I2S uses board-specific pins, not the pins from mConfig! |
| 79 | // For Arduino Zero: WS=0, CLK=1, SD=9 |
| 80 | // For MKR boards: WS=3, CLK=2, SD=A6 |
| 81 | // Pin configuration in mConfig is ignored on Arduino platforms |
| 82 | int i2s_mode = convertCommFormatToMode(mConfig.mCommFormat); |
| 83 | bool success = I2S.begin( |
| 84 | i2s_mode, |
| 85 | static_cast<long>(mConfig.mSampleRate), |
| 86 | static_cast<int>(mConfig.mBitResolution) |
| 87 | ); |
| 88 | |
| 89 | if (!success) { |
| 90 | mHasError = true; |
| 91 | mErrorMessage = "Failed to initialize Arduino I2S"; |
| 92 | FL_WARN(mErrorMessage.c_str()); |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | mInitialized = true; |
| 97 | mTotalSamplesRead = 0; |
| 98 | FL_WARN("Arduino I2S audio input started successfully"); |
| 99 | } |
| 100 | |
| 101 | void stop() FL_NOEXCEPT override { |
| 102 | if (!mInitialized) { |
| 103 | return; |
| 104 | } |
| 105 | |
| 106 | I2S.end(); |
| 107 | mInitialized = false; |
| 108 | mTotalSamplesRead = 0; |
| 109 | FL_WARN("Arduino I2S audio input stopped"); |
| 110 | } |
| 111 | |
| 112 | bool error(fl::string *msg = nullptr) FL_NOEXCEPT override { |
| 113 | if (msg && mHasError) { |
| 114 | *msg = mErrorMessage; |
| 115 | } |
| 116 | return mHasError; |
| 117 | } |
| 118 | |
| 119 | audio::Sample read() FL_NOEXCEPT override { |