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Run PDM clock at 2.08MHz #261

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Merged
merged 1 commit into from
Jun 16, 2021
Merged

Run PDM clock at 2.08MHz #261

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4 changes: 2 additions & 2 deletions libraries/PDM/src/rp2040/PDM.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ uint8_t rawBuffer1[RAW_BUFFER_SIZE];
uint8_t* rawBuffer[2] = {rawBuffer0, rawBuffer1};
volatile int rawBufferIndex = 0;

int decimation = 64;
int decimation = 128;

// final buffer is the one to be filled with PCM data
int16_t* volatile finalBuffer;
Expand Down Expand Up @@ -178,7 +178,7 @@ void PDMClass::IrqHandler(bool halftranfer)
}

// fill final buffer with PCM samples
Open_PDM_Filter_64(rawBuffer[rawBufferIndex], finalBuffer, 1, &filter);
Open_PDM_Filter_128(rawBuffer[rawBufferIndex], finalBuffer, 1, &filter);

if (cutSamples) {
memset(finalBuffer, 0, cutSamples);
Expand Down