Arti Zirk
2de3a91b0a
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/** @defgroup pwr_file PWR peripheral API
|
|
*
|
|
* @ingroup peripheral_apis
|
|
*
|
|
* @brief <b>libopencm3 STM32G4xx Power Control</b>
|
|
*
|
|
* @version 1.0.0
|
|
*
|
|
* @author @htmlonly © @endhtmlonly 2016 Benjamin Levine <benjamin@jesco.karoo.co.uk>
|
|
* @author @htmlonly © @endhtmlonly 2019 Guillaume Revaillot <g.revaillot@gmail.com>
|
|
* @author @htmlonly © @endhtmlonly 2020 Ben Brewer <ben.brewer@codethink.co.uk>
|
|
*
|
|
* @date 29 July 2020
|
|
*
|
|
* This library supports the power control system for the
|
|
* STM32G4 series of ARM Cortex Microcontrollers by ST Microelectronics.
|
|
*
|
|
* LGPL License Terms @ref lgpl_license
|
|
*/
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2016 Benjamin Levine <benjamin@jesco.karoo.co.uk>
|
|
* Copyright (C) 2019 Guillaume Revaillot <g.revaillot@gmail.com>
|
|
* Copyright (C) 2020 Ben Brewer <ben.brewer@codethink.co.uk>
|
|
*
|
|
* 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_CR1 & ~(PWR_CR1_VOS_MASK << PWR_CR1_VOS_SHIFT);
|
|
reg32 |= (scale & PWR_CR1_VOS_MASK) << PWR_CR1_VOS_SHIFT;
|
|
PWR_CR1 = reg32;
|
|
}
|
|
|
|
/** Disable Backup Domain Write Protection
|
|
*
|
|
* This allows backup domain registers to be changed. These registers are write
|
|
* protected after a reset.
|
|
*/
|
|
void pwr_disable_backup_domain_write_protect(void)
|
|
{
|
|
PWR_CR1 |= PWR_CR1_DBP;
|
|
}
|
|
|
|
/** Re-enable Backup Domain Write Protection
|
|
*
|
|
* This protects backup domain registers from inadvertent change.
|
|
*/
|
|
void pwr_enable_backup_domain_write_protect(void)
|
|
{
|
|
PWR_CR1 &= ~PWR_CR1_DBP;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief Select the low power mode used in deep sleep.
|
|
* @param lpms low power mode @ref pwr_cr1_lpms
|
|
*/
|
|
void pwr_set_low_power_mode_selection(uint32_t lpms)
|
|
{
|
|
uint32_t reg32;
|
|
|
|
reg32 = PWR_CR1;
|
|
reg32 &= ~(PWR_CR1_LPMS_MASK << PWR_CR1_LPMS_SHIFT);
|
|
PWR_CR1 = (reg32 | (lpms << PWR_CR1_LPMS_SHIFT));
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief Enable Power Voltage Detector.
|
|
* @param[in] pvd_level Power Voltage Detector Falling Threshold voltage @ref pwr_pls.
|
|
*/
|
|
void pwr_enable_power_voltage_detect(uint32_t pvd_level)
|
|
{
|
|
uint32_t reg32;
|
|
|
|
reg32 = PWR_CR2;
|
|
reg32 &= ~(PWR_CR2_PLS_MASK << PWR_CR2_PLS_SHIFT);
|
|
PWR_CR2 = (reg32 | (pvd_level << PWR_CR2_PLS_SHIFT) | PWR_CR2_PVDE);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief Disable Power Voltage Detector.
|
|
*/
|
|
void pwr_disable_power_voltage_detect(void)
|
|
{
|
|
PWR_CR2 &= ~PWR_CR2_PVDE;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief Enable Boost Mode.
|
|
*/
|
|
void pwr_enable_boost(void)
|
|
{
|
|
PWR_CR5 &= ~PWR_CR5_R1MODE;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief Disable Boost Mode.
|
|
*/
|
|
void pwr_disable_boost(void)
|
|
{
|
|
PWR_CR5 |= PWR_CR5_R1MODE;
|
|
}
|
|
|
|
/**@}*/
|