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/** @defgroup pwr_file PWR
*
* @ingroup STM32L1xx
*
* @brief <b>libopencm3 STM32L1xx Power Control</b>
*
* @version 1.0.0
*
* @author @htmlonly © @endhtmlonly 2012 Karl Palsson <karlp@tweak.net.au>
*
* @date 4 March 2013
*
* This library supports the power control system for the
* STM32L1 series of ARM Cortex Microcontrollers by ST Microelectronics.
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* 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>
#include <libopencm3/stm32/rcc.h>
void pwr_set_vos_scale(vos_scale_t scale)
{
/* You are not allowed to write zeros here, don't try and optimize! */
uint32_t reg = PWR_CR;
reg &= ~(PWR_CR_VOS_MASK);
switch (scale) {
case RANGE1:
reg |= PWR_CR_VOS_RANGE1;
break;
case RANGE2:
reg |= PWR_CR_VOS_RANGE2;
break;
case RANGE3:
reg |= PWR_CR_VOS_RANGE3;
break;
}
PWR_CR = reg;
}
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