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authorDrashna Jaelre <drashna@live.com>2018-12-03 16:42:57 -0800
committerMechMerlin <30334081+mechmerlin@users.noreply.github.com>2018-12-03 16:42:57 -0800
commit3a0f3a5bd0aff18934431ad471b1db390c3b33d1 (patch)
tree6ee8385d3f0b95b1448d043801ff612e012856bc
parentda1afe152af5a6dfb5c0bb28d86d34940162f960 (diff)
Make ARM Audio max volume configurable (#4540)
* 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>
-rw-r--r--docs/feature_audio.md7
-rw-r--r--quantum/audio/audio_arm.c2
2 files changed, 9 insertions, 0 deletions
diff --git a/docs/feature_audio.md b/docs/feature_audio.md
index 82e0ed9503..a39c456873 100644
--- a/docs/feature_audio.md
+++ b/docs/feature_audio.md
@@ -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
diff --git a/quantum/audio/audio_arm.c b/quantum/audio/audio_arm.c
index 18e8a8c66d..989f7a64be 100644
--- a/quantum/audio/audio_arm.c
+++ b/quantum/audio/audio_arm.c
@@ -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)