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Diffstat (limited to 'libopencm3/lib/stm32/l1/pwr.c')
| -rw-r--r-- | libopencm3/lib/stm32/l1/pwr.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libopencm3/lib/stm32/l1/pwr.c b/libopencm3/lib/stm32/l1/pwr.c new file mode 100644 index 0000000..64210d5 --- /dev/null +++ b/libopencm3/lib/stm32/l1/pwr.c @@ -0,0 +1,58 @@ +/** @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; +} + |