lora-car/libopencm3/lib/stm32/f4/pwr.c

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/** @defgroup pwr_file PWR peripheral API
*
* @ingroup peripheral_apis
*
* @brief <b>libopencm3 STM32F4xx Power Control</b>
*
* @version 1.0.0
*
* @author @htmlonly &copy; @endhtmlonly 2011 Stephen Caudle <scaudle@doceme.com>
*
* @date 4 March 2013
*
* This library supports the power control system for the
* STM32F4 series of ARM Cortex Microcontrollers by ST Microelectronics.
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/pwr.h>
/**@{*/
void pwr_set_vos_scale(enum pwr_vos_scale scale)
{
uint32_t reg32;
reg32 = PWR_CR & ~(PWR_CR_VOS_MASK << PWR_CR_VOS_SHIFT);
reg32 |= (scale & PWR_CR_VOS_MASK) << PWR_CR_VOS_SHIFT;
PWR_CR = reg32;
}
/**@}*/