qmk_firmware/keyboards/k34/config.h

// Copyright 2021 jp_smasher (@jp_smasher)
// SPDX-License-Identifier: GPL-2.0-or-later

#pragma once


/*
 * Keyboard Matrix Assignments
 *
 * Change this to how you wired your keyboard
 * COLS: AVR pins used for columns, left to right
 * ROWS: AVR pins used for rows, top to bottom
 * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
 *                  ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
 *
 */
#define MATRIX_ROW_PINS { F4, B2, E6, B4 }
#define MATRIX_COL_PINS { D1, D0, D4, C6, D7, F5, F6, F7, B1, B3 }

/* COL2ROW, ROW2COL */
#define DIODE_DIRECTION COL2ROW