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| -rw-r--r-- | docs/feature_split_keyboard.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/feature_split_keyboard.md b/docs/feature_split_keyboard.md index 90af3930f9..dc081ff3ae 100644 --- a/docs/feature_split_keyboard.md +++ b/docs/feature_split_keyboard.md @@ -109,6 +109,10 @@ Normally, when a diode is connected to an intersection, it is judged to be left. #define SPLIT_HAND_MATRIX_GRID_LOW_IS_RIGHT ``` +Note that adding a diode at a previously unused intersection will effectively tell the firmware that there is a key held down at that point. You can instruct qmk to ignore that intersection by defining `MATRIX_MASKED` and then defining a `matrix_row_t matrix_mask[MATRIX_ROWS]` array in your keyboard config. Each bit of a single value (starting form the least-significant bit) is used to tell qmk whether or not to pay attention to key presses at that intersection. + +While `MATRIX_MASKED` isn't necessary to use `SPLIT_HAND_MATRIX_GRID` successfully, without it you may experience issues trying to suspend your computer with your keyboard attached as the matrix will always report at least one key-press. + #### Handedness by EEPROM This method sets the keyboard's handedness by setting a flag in the persistent storage (`EEPROM`). This is checked when the controller first starts up, and determines what half the keyboard is, and how to orient the keyboard layout. |