qmk-firmware/keyboards/oddball/config.h

/* Copyright 2020 Alexander Tulloh
 *
 * 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

/* Split Keyboard specific options */
#define USE_I2C
#define SPLIT_USB_DETECT
#define MASTER_RIGHT

/* 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

/* optical sensor settings */
#define SCROLL_DIVIDER 12
#define CPI_1 2000
#define CPI_2 4000
#define CPI_3 8000

#define ADNS9800_CS_PIN SPI_SS_PIN
#define PMW33XX_CS_PIN SPI_SS_PIN