qmk_firmware/keyboards/alt34/rev1/config.h

/*
Copyright 2022 Tommy Alatalo <@altosys>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once

/* key matrix size */
// Rows are doubled-up
#define MATRIX_ROWS 8
#define MATRIX_COLS 5

// wiring of each half
#define MATRIX_ROW_PINS { D7, E6, B4, B5 }
#define MATRIX_COL_PINS { B6, B2, B3, B1, F7 }
#define DIODE_DIRECTION COL2ROW

/* Set 0 if debouncing isn't needed */
#define DEBOUNCE 5

/* serial.c configuration for split keyboard */
/* #define SOFT_SERIAL_PIN D0 */

/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
#define LOCKING_SUPPORT_ENABLE
/* Locking resynchronize hack */
#define LOCKING_RESYNC_ENABLE

/* Use I2C or Serial, not both */
#define USE_I2C
// #define USE_SERIAL

/* Select hand configuration */
#define EE_HANDS
/* #define MASTER_LEFT */
/* #define MASTER_RIGHT */