qmk_firmware/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/board.h

/* Copyright 2020 Nick Brassel (tzarc)
 *
 *  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 3 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 <https://www.gnu.org/licenses/>.
 */
#pragma once

#define STM32_HSECLK 12000000
// The following is required to disable the pull-down on PA9, when PA9 is used for the keyboard matrix:
#define BOARD_OTG_NOVBUSSENS

#include_next "board.h"

#undef STM32_HSE_BYPASS

#undef STM32F407xx
#define STM32F405xG
#define STM32F405xx