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Improve I2S to PDM mic ratio naming clarity

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This commit is contained in:
Sam Chesney
2017-02-24 11:37:57 +00:00
parent e0b1711f8f
commit 4ed791bb04
4 changed files with 14 additions and 15 deletions
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15
module_usb_audio/devicedefines.h
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@@ -136,17 +136,16 @@
#endif
/**
* @brief Ratio of the PDM microphone decimator sample rate to the I2S sample
* rate. Up and down-sampling will be enabled as necessary when the rates
* differ.
* @brief Ratio of the I2S sample rate to the PDM microphone decimator sample
* rate.
*
* Default: 1 i.e. PDM microphone decimator and I2S are running at the sample rate.
* Default: 1 i.e. I2S and PDM microphone decimators are running at the same sample rate.
*/
#ifndef MICS_TO_AUD_RATIO
#define MICS_TO_AUD_RATIO (1)
#ifndef AUD_TO_MICS_RATIO
#define AUD_TO_MICS_RATIO (1)
#else
#if (MICS_TO_AUD_RATIO != 3) && (MICS_TO_AUD_RATIO != 1)
#error Unsupported PDM microphone decimator to I2S sample rate ratio
#if (AUD_TO_MICS_RATIO != 3) && (AUD_TO_MICS_RATIO != 1)
#error Unsupported I2S to PDM microphone decimator sample rate ratio
#endif
#endif