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Make ARM Audio max volume configurable (#4540)

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* Make ARM Audio max volume configurable

* Update docs/feature_audio.md

Co-Authored-By: drashna <drashna@live.com>

* Update docs/feature_audio.md

Co-Authored-By: drashna <drashna@live.com>
This commit is contained in:
Drashna Jaelre 2018-12-03 16:42:57 -08:00 committed by MechMerlin
parent da1afe152a
commit 3a0f3a5bd0
2 changed files with 9 additions and 0 deletions
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7
docs/feature_audio.md
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@ -65,6 +65,13 @@ The available keycodes for audio are:
* `AU_OFF` - Turn audio mode off
* `AU_TOG` - Toggle audio mode
## ARM Audio Volume
For ARM devices, you can adjust the DAC sample values. If your board is too loud for you or your coworkers, you can set the max using `DAC_SAMPLE_MAX` in your `config.h`:
```c
#define DAC_SAMPLE_MAX 65535U
```
## Music Mode

2
quantum/audio/audio_arm.c
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@ -80,7 +80,9 @@ float startup_song[][2] = STARTUP_SONG;
static void gpt_cb8(GPTDriver *gptp);
#define DAC_BUFFER_SIZE 720
#ifndef DAC_SAMPLE_MAX
#define DAC_SAMPLE_MAX 65535U
#endif
#define START_CHANNEL_1() gptStart(&GPTD6, &gpt6cfg1); \
gptStartContinuous(&GPTD6, 2U)