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better audiosyncPacket description (audio_reactive.h)

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clarify meaning of some fields
This commit is contained in:
Frank
2024-12-29 19:56:28 +01:00
committed by GitHub
parent f24d35e970
commit 257b7b5876
1 changed files with 6 additions and 6 deletions
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12
usermods/audioreactive/audio_reactive.h
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@@ -1159,16 +1159,16 @@ class AudioReactive : public Usermod {
#endif
// new "V2" audiosync struct - 44 Bytes
struct __attribute__ ((packed)) audioSyncPacket { // WLEDMM "packed" ensures that there are no additional gaps
char header[6]; // 06 Bytes offset 0
char header[6]; // 06 Bytes offset 0 - "00002" for protocol version 2 ( includes \0 for c-style string termination)
uint8_t pressure[2]; // 02 Bytes, offset 6 - sound pressure as fixed point (8bit integer, 8bit fraction)
float sampleRaw; // 04 Bytes offset 8 - either "sampleRaw" or "rawSampleAgc" depending on soundAgc setting
float sampleSmth; // 04 Bytes offset 12 - either "sampleAvg" or "sampleAgc" depending on soundAgc setting
uint8_t samplePeak; // 01 Bytes offset 16 - 0 no peak; >=1 peak detected. In future, this will also provide peak Magnitude
uint8_t frameCounter; // 01 Bytes offset 17 - track duplicate/out of order packets
uint8_t fftResult[16]; // 16 Bytes offset 18
uint16_t zeroCrossingCount; // 02 Bytes, offset 34
float FFT_Magnitude; // 04 Bytes offset 36
float FFT_MajorPeak; // 04 Bytes offset 40
uint8_t frameCounter; // 01 Bytes offset 17 - rolling counter to track duplicate/out of order packets
uint8_t fftResult[16]; // 16 Bytes offset 18 - 16 GEQ channels, each channel has one byte (uint8_t)
uint16_t zeroCrossingCount; // 02 Bytes, offset 34 - number of zero crossings seen in 23ms
float FFT_Magnitude; // 04 Bytes offset 36 - largest FFT result from a single run (raw value, can go up to 4096)
float FFT_MajorPeak; // 04 Bytes offset 40 - frequency (Hz) of largest FFT result
};
// old "V1" audiosync struct - 83 Bytes payload, 88 bytes total - for backwards compatibility