Port DIRECT_PINS from split_common/matrix.c to matrix.c (#5091)

[qmk_firmware.git] / docs / porting_your_keyboard_to_qmk_(arm_and_other_chibios_cpus).md

diff --git a/docs/porting_your_keyboard_to_qmk_(arm_and_other_chibios_cpus).md b/docs/porting_your_keyboard_to_qmk_(arm_and_other_chibios_cpus).md
index c32c428cf01d6da5b556251a10b5a92561e605c5..d8e084f466ccd84f3b0862565fad5c8b113138e1 100644 (file)
--- a/docs/porting_your_keyboard_to_qmk_(arm_and_other_chibios_cpus).md
+++ b/docs/porting_your_keyboard_to_qmk_(arm_and_other_chibios_cpus).md
@@ -22,6 +22,8 @@ The `MATRIX_ROW_PINS` and `MATRIX_COL_PINS` are the pins your MCU uses on each r
 
 For the `DIODE_DIRECTION`, most hand-wiring guides will instruct you to wire the diodes in the `COL2ROW` position, but it's possible that they are in the other - people coming from EasyAVR often use `ROW2COL`. Nothing will function if this is incorrect.
 
+To configure a keyboard where each switch is connected to a separate pin and ground instead of sharing row and column pins, use `DIRECT_PINS`. The mapping defines the pins of each switch in rows and columns, from left to right. Must conform to the sizes within `MATRIX_ROWS` and `MATRIX_COLS`, use `NO_PIN` to fill in blank spaces. Overrides the behaviour of `DIODE_DIRECTION`, `MATRIX_ROW_PINS` and `MATRIX_COL_PINS`.
+
 `BACKLIGHT_PIN` is the pin that your PWM-controlled backlight (if one exists) is hooked-up to. Currently only B5, B6, and B7 are supported.
 
 `BACKLIGHT_BREATHING` is a fancier backlight feature that adds breathing/pulsing/fading effects to the backlight. It uses the same timer as the normal backlight. These breathing effects must be called by code in your keymap.