50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
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/** @addtogroup pwr_file PWR peripheral API
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* @ingroup peripheral_apis
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*
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* @author @htmlonly © @endhtmlonly 2012 Karl Palsson <karlp@tweak.net.au>
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**@{*/
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#include <libopencm3/stm32/pwr.h>
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#include <libopencm3/stm32/rcc.h>
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void pwr_set_vos_scale(enum pwr_vos_scale scale)
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{
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/* You are not allowed to write zeros here, don't try and optimize! */
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uint32_t reg = PWR_CR;
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reg &= ~(PWR_CR_VOS_MASK);
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switch (scale) {
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case PWR_SCALE1:
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reg |= PWR_CR_VOS_RANGE1;
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break;
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case PWR_SCALE2:
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reg |= PWR_CR_VOS_RANGE2;
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break;
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case PWR_SCALE3:
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reg |= PWR_CR_VOS_RANGE3;
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break;
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}
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PWR_CR = reg;
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}
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/**@}*/
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