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start in-place documentation of dac settings

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This commit is contained in:
Jack Humbert 2019-06-01 02:02:58 -04:00
parent 3e1826a332
commit 3e6478b0bb
1 changed files with 12 additions and 0 deletions
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12
quantum/audio/audio_arm.c
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@ -77,20 +77,32 @@ bool glissando = true;
#endif #endif
float startup_song[][2] = STARTUP_SONG; float startup_song[][2] = STARTUP_SONG;
/** Size of the dac_buffer arrays. All must be the same size. */
#define DAC_BUFFER_SIZE 256U #define DAC_BUFFER_SIZE 256U
/** Highest value allowed by our 12bit DAC */
#ifndef DAC_SAMPLE_MAX #ifndef DAC_SAMPLE_MAX
#define DAC_SAMPLE_MAX 4095U #define DAC_SAMPLE_MAX 4095U
#endif #endif
/** Effective bitrate of the DAC. 44.1khz is the standard for most audio - any
* lower will sacrifice perceptible audio quality. Any higher will limit the
* number of simultaneous voices.
*/
#ifndef DAC_SAMPLE_RATE #ifndef DAC_SAMPLE_RATE
#define DAC_SAMPLE_RATE 44100U #define DAC_SAMPLE_RATE 44100U
#endif #endif
/** The number of voices (in polyphony) that are supported. Certain voices will
* glitch out at different values - most (the look-ups) survive 5.
*/
#ifndef DAC_VOICES_MAX #ifndef DAC_VOICES_MAX
#define DAC_VOICES_MAX 5 #define DAC_VOICES_MAX 5
#endif #endif
/** The default value of the DAC when not playing anything. Certain hardware
* setups may require a high (DAC_SAMPLE_MAX) or low (0) value here.
*/
#ifndef DAC_OFF_VALUE #ifndef DAC_OFF_VALUE
#define DAC_OFF_VALUE DAC_SAMPLE_MAX / 2 #define DAC_OFF_VALUE DAC_SAMPLE_MAX / 2
#endif #endif