[Core] Allow customizing PWM frequency (#21717)
* [Core] Allow customizing PWM frequency Some frequencies can cause audible noise. Changing the frequency eliminates that. Signed-off-by: Daniel Schaefer <dhs@frame.work> * docs/feature-backlight: Mention PWM frequency Signed-off-by: Daniel Schaefer <dhs@frame.work> --------- Signed-off-by: Daniel Schaefer <dhs@frame.work>
This commit is contained in:
parent
911c715f49
commit
dd887eae36
2 changed files with 4 additions and 1 deletions
|
@ -39,6 +39,7 @@ Add the following to your `config.h`:
|
|||
|`BACKLIGHT_LIMIT_VAL` |`255` |The maximum duty cycle of the backlight -- `255` allows for full brightness, any lower will decrease the maximum.|
|
||||
|`BACKLIGHT_DEFAULT_LEVEL` |`BACKLIGHT_LEVELS`|The default backlight level to use upon clearing the EEPROM |
|
||||
|`BACKLIGHT_DEFAULT_BREATHING`|*Not defined* |Whether to enable backlight breathing upon clearing the EEPROM |
|
||||
|`BACKLIGHT_PWM_PERIOD` |2048Hz |Defaults to `BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048`, which results in a PWM frequency of 2048Hz. |
|
||||
|
||||
Unless you are designing your own keyboard, you generally should not need to change the `BACKLIGHT_PIN` or `BACKLIGHT_ON_STATE`.
|
||||
|
||||
|
|
|
@ -37,7 +37,9 @@
|
|||
# define BACKLIGHT_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
|
||||
# endif
|
||||
# define BACKLIGHT_PWM_COUNTER_FREQUENCY 1000000
|
||||
# define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048
|
||||
# ifndef BACKLIGHT_PWM_PERIOD
|
||||
# define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048
|
||||
# endif
|
||||
|
||||
# ifndef AUDIO_PWM_PAL_MODE
|
||||
# define AUDIO_PWM_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
|
||||
|
|
Loading…
Reference in a new issue