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

[qmk_firmware.git] / docs / hardware_avr.md

diff --git a/docs/hardware_avr.md b/docs/hardware_avr.md
index 4d81a23d7d88dcaa801a91ebc75301adb9332299..acf7088a3964c6ae93698874563b6fc2ae535ed4 100644 (file)
--- a/docs/hardware_avr.md
+++ b/docs/hardware_avr.md
@@ -66,7 +66,7 @@ Do change the `MANUFACTURER`, `PRODUCT`, and `DESCRIPTION` lines to accurately r
 #define DESCRIPTION     A custom keyboard
 ```
 
-?> Note: On Windows and macOS the `MANUFACTURER`, `PRODUCT`, and `DESCRIPTION` fields will be displayed in the list of USB devices. On Linux these values will not be visible in `lsusb`, since Linux takes that information from the list published by the USB-IF.
+?> Note: On Windows and macOS the `MANUFACTURER`, `PRODUCT`, and `DESCRIPTION` fields will be displayed in the list of USB devices. ?> On Linux these values will not be visible in lsusb by default, since Linux takes the information from the list maintained by [USB ID Repository](http://www.linux-usb.org/usb-ids.html) by default. lsusb will show the information reported by the device when executed with -v option. It is also present in kernel logs after plugging in the device.
 
 ### Keyboard Matrix Configuration
 
@@ -87,12 +87,30 @@ Once you've defined the size of your matrix you need to define which pins on you
 
 The number of `MATRIX_ROW_PINS` entries must be the same as the number you assigned to `MATRIX_ROWS`, and likewise for `MATRIX_COL_PINS` and `MATRIX_COLS`. You do not have to specify `UNUSED_PINS`, but you can if you want to document what pins are open.
 
-Finally, you can specify the direction your diodes point. This can be `COL2ROW`, `ROW2COL`, or `CUSTOM_MATRIX`.
+Finally, you can specify the direction your diodes point. This can be `COL2ROW` or `ROW2COL`.
 
 ```c
 #define DIODE_DIRECTION COL2ROW
 ```
 
+#### Direct Pin Matrix
+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`.
+
+```c
+// #define MATRIX_ROW_PINS { D0, D5 }
+// #define MATRIX_COL_PINS { F1, F0, B0 }
+#define DIRECT_PINS { \
+    { F1, E6, B0, B2, B3 }, \
+    { F5, F0, B1, B7, D2 }, \
+    { F6, F7, C7, D5, D3 }, \
+    { B5, C6, B6, NO_PIN, NO_PIN } \
+}
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL */
+//#define DIODE_DIRECTION
+```
+
 ### Backlight Configuration
 
 By default QMK supports backlighting on pins `B5`, `B6`, and `B7`. If you are using one of those you can simply enable it here. For more details see the [Backlight Documentation](feature_backlight.md).