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Diffstat (limited to 'docs/docs/features/backlight.md')
| -rw-r--r-- | docs/docs/features/backlight.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/docs/features/backlight.md b/docs/docs/features/backlight.md index a917b16..f43c735 100644 --- a/docs/docs/features/backlight.md +++ b/docs/docs/features/backlight.md @@ -24,7 +24,7 @@ There are various Kconfig options used to configure the backlight feature. These | `CONFIG_ZMK_BACKLIGHT_BRT_STEP` | Brightness step in percent | 20 | | `CONFIG_ZMK_BACKLIGHT_BRT_START` | Default brightness in percent | 40 | | `CONFIG_ZMK_BACKLIGHT_ON_START` | Default backlight state | y | -| `CONFIG_ZMK_BACKLIGHT_AUTO_OFF_IDLE` | Turn off backlight when keyboard goes into idle state | y | +| `CONFIG_ZMK_BACKLIGHT_AUTO_OFF_IDLE` | Turn off backlight when keyboard goes into idle state | n | | `CONFIG_ZMK_BACKLIGHT_AUTO_OFF_USB` | Turn off backlight when USB is disconnected | n | ## Adding Backlight to a Board @@ -43,7 +43,7 @@ First, you need to enable PWM by adding the following lines to your `.overlay` f }; ``` -The value `ch0-pin` represents the pin that controls the LEDs. To calculate the value to use, you need a bit of math. You need the hardware port and run it through a function. +The value `ch0-pin` represents the pin that controls the LEDs. With nRF52 boards, you can calculate the value to use in the following way: you need the hardware port and run it through a function. **32 \* X + Y** = `<Pin number>` where X is first part of the hardware port "PX.01" and Y is the second part of the hardware port "P1.Y". For example, _P1.13_ would give you _32 \* 1 + 13_ = `<45>` and _P0.15_ would give you _32 \* 0 + 15_ = `<15>`. |