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I2S: another attempt to make "slave mode" work

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Frank
2022-11-22 17:14:02 +01:00
parent f1088a6ed7
commit 1446bab3c5
1 changed files with 7 additions and 0 deletions
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7
usermods/audioreactive/audio_source.h
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@@ -230,11 +230,18 @@ class I2SSource : public AudioSource {
}
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 2, 0)
if ((_i2sMaster == false) && (_config.mode & I2S_MODE_SLAVE)) { // I2S slave mode (experimental).
// Seems we need to drive clocks in slave mode
_config.use_apll = true;
_config.fixed_mclk = 512 * int(_config.sample_rate);
}
if (mclkPin != I2S_PIN_NO_CHANGE) {
_config.use_apll = true; // experimental - use aPLL clock source to improve sampling quality, and to avoid glitches.
// //_config.fixed_mclk = 512 * _sampleRate;
// //_config.fixed_mclk = 256 * _sampleRate;
}
#if !defined(SOC_I2S_SUPPORTS_APLL)
#warning this MCU does not have an APLL high accuracy clock for audio
// S3: not supported; S2: supported; C3: not supported