~ruther/qmk_firmware

5b4187ad1bdad6ec40d4f98c5342a22ab68cfabd — fauxpark 6 years ago d5b01bd
Correct backlight on state docs (#6358)

* Correct backlight on state docs

* Reword to make it less confusing
1 files changed, 4 insertions(+), 2 deletions(-)

M docs/feature_backlight.md
M docs/feature_backlight.md => docs/feature_backlight.md +4 -2
@@ 73,8 73,10 @@ To change the behaviour of the backlighting, `#define` these in your `config.h`:

## Backlight On State

Most backlight circuits are driven by an N-channel MOSFET or NPN transistor. This means that to turn the transistor *on* and light the LEDs, you must drive the backlight pin, connected to the gate or base, *low*.
Sometimes, however, a P-channel MOSFET, or a PNP transistor is used. In this case you must `#define BACKLIGHT_ON_STATE 1`, so that when the transistor is on, the pin is driven *high* instead.
Most backlight circuits are driven by an N-channel MOSFET or NPN transistor. This means that to turn the transistor *on* and light the LEDs, you must drive the backlight pin, connected to the gate or base, *high*.
Sometimes, however, a P-channel MOSFET, or a PNP transistor is used. In this case, when the transistor is on, the pin is driven *low* instead.

This functionality is configured at the keyboard level with the `BACKLIGHT_ON_STATE` define.

## Multiple backlight pins