qmk_firmware/keyboards/keychron/v5/config.h

/* Copyright 2022 @ Keychron(https://www.keychron.com)
 *
 * 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 pins */
#define MATRIX_ROW_PINS \
    { B5, B4, B3, A15, A14, A13 }
#define MATRIX_COL_PINS \
    { A10, A9, A8, B1, B0, A7, A6, A5, A4, A3, NO_PIN, NO_PIN, NO_PIN, NO_PIN, NO_PIN, NO_PIN, NO_PIN, NO_PIN }

/* COL2ROW or ROW2COL */
#define DIODE_DIRECTION ROW2COL

/* RGB Matrix Driver Configuration */
#define SNLED27351_I2C_ADDRESS_1 SNLED27351_I2C_ADDRESS_VDDIO
#define SNLED27351_I2C_ADDRESS_2 SNLED27351_I2C_ADDRESS_GND

/* Increase I2C speed to 1000 KHz */
#define I2C1_TIMINGR_PRESC 0U
#define I2C1_TIMINGR_SCLDEL 3U
#define I2C1_TIMINGR_SDADEL 0U
#define I2C1_TIMINGR_SCLH 15U
#define I2C1_TIMINGR_SCLL 51U

#define SNLED27351_CURRENT_TUNE \
    { 0xB6, 0xB6, 0x56, 0xB6, 0xB6, 0x56, 0xB6, 0xB6, 0x56, 0xB6, 0xB6, 0x56 }