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Diffstat (limited to 'src/drivers/include/wm8523.hpp')
| -rw-r--r-- | src/drivers/include/wm8523.hpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/drivers/include/wm8523.hpp b/src/drivers/include/wm8523.hpp index b13cf34b..a64f6bac 100644 --- a/src/drivers/include/wm8523.hpp +++ b/src/drivers/include/wm8523.hpp @@ -23,6 +23,8 @@ extern const uint16_t kLineLevelReferenceVolume; extern const uint16_t kDefaultVolume; extern const uint16_t kDefaultMaxVolume; +extern const uint16_t kZeroDbVolume; + constexpr auto VolumeToDb(uint16_t vol) -> int_fast8_t { return (vol - kLineLevelReferenceVolume) / 4; } |