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small improvements for I2S PDM and I2S Line-in

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Frank
2022-11-09 18:36:02 +01:00
parent 20aebf2789
commit 0fdc0d042d
2 changed files with 18 additions and 4 deletions
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9
usermods/audioreactive/audio_source.h
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@@ -76,11 +76,15 @@
#ifdef I2S_USE_RIGHT_CHANNEL
#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_LEFT
#define I2S_MIC_CHANNEL_TEXT "right channel only (work-around swapped channel bug in IDF 4.4)."
#define I2S_PDM_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_RIGHT
#define I2S_PDM_MIC_CHANNEL_TEXT "right channel only"
#else
//#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ALL_LEFT
//#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_RIGHT_LEFT
#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_RIGHT
#define I2S_MIC_CHANNEL_TEXT "left channel only (work-around swapped channel bug in IDF 4.4)."
#define I2S_PDM_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_LEFT
#define I2S_PDM_MIC_CHANNEL_TEXT "left channel only."
#endif
#else
@@ -92,6 +96,9 @@
#define I2S_MIC_CHANNEL I2S_CHANNEL_FMT_ONLY_LEFT
#define I2S_MIC_CHANNEL_TEXT "left channel only."
#endif
#define I2S_PDM_MIC_CHANNEL I2S_MIC_CHANNEL
#define I2S_PDM_MIC_CHANNEL_TEXT I2S_MIC_CHANNEL_TEXT
#endif
@@ -212,7 +219,7 @@ class I2SSource : public AudioSource {
// data line, to make it simpler to debug, use the WS pin as CLK and SD
// pin as DATA
_config.mode = i2s_mode_t(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_PDM); // Change mode to pdm if clock pin not provided. PDM is not supported on ESP32-S2. PDM RX not supported on ESP32-C3
_config.channel_format =I2S_CHANNEL_FMT_ONLY_LEFT; // seems that PDM mono mode always uses left channel.
_config.channel_format =I2S_PDM_MIC_CHANNEL; // seems that PDM mono mode always uses left channel.
//_config.use_apll = true; // experimental - use aPLL clock source to improve sampling quality
//_config.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT; // not needed
#endif