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Fix AudioInput on RP2040 #316

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Fix AudioInput on RP2040 #316

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117120e
Fix AudioInput on RP2040
Oct 14, 2025
3961680
Small progress towards fixing audio Input in RP2040
tomcombriat Oct 20, 2025
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7 changes: 7 additions & 0 deletions internal/MozziGuts.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,13 @@ uint64_t samples_written_to_buffer = 0;
inline void bufferAudioOutput(const AudioOutput f) {
audioOutput(f);
++samples_written_to_buffer;
#if MOZZI_IS(MOZZI__LEGACY_AUDIO_INPUT_IMPL, 1) // in that case, we rely on asynchroneous ADC reads implemented for mozziAnalogRead to get the audio in samples
MOZZI_ASSERT_NOTEQUAL(MOZZI_ANALOG_READ, MOZZI_ANALOG_READ_NONE);
adc_count = 0;
startSecondADCReadOnCurrentChannel();
#endif


}
#else
CircularBuffer<AudioOutput> output_buffer; // fixed size 256
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2 changes: 1 addition & 1 deletion internal/config_checks_rp2040.h
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Expand Up @@ -125,6 +125,6 @@ MOZZI_CHECK_SUPPORTED(MOZZI_I2S_FORMAT, MOZZI_I2S_FORMAT_PLAIN, MOZZI_I2S_FORMAT
#define MOZZI__INTERNAL_ANALOG_READ_RESOLUTION 12

MOZZI_CHECK_SUPPORTED(MOZZI_ANALOG_READ, MOZZI_ANALOG_READ_NONE, MOZZI_ANALOG_READ_STANDARD)
MOZZI_CHECK_SUPPORTED(MOZZI_AUDIO_INPUT, MOZZI_AUDIO_INPUT_NONE, MOZZI_ANALOG_READ_STANDARD)
MOZZI_CHECK_SUPPORTED(MOZZI_AUDIO_INPUT, MOZZI_AUDIO_INPUT_NONE, MOZZI_AUDIO_INPUT_STANDARD)

#endif // #ifndef CONFIG_CHECK_RP2040_H