Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_pwr_ex.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_pwr_ex.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,203 @@ +/** + ****************************************************************************** + * @file stm32f2xx_hal_pwr_ex.c + * @author MCD Application Team + * @version V1.1.3 + * @date 29-June-2016 + * @brief Extended PWR HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of PWR extension peripheral: + * + Peripheral Extended features functions + * + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f2xx_hal.h" + +/** @addtogroup STM32F2xx_HAL_Driver + * @{ + */ + +/** @defgroup PWREx PWREx + * @brief PWR HAL module driver + * @{ + */ + +#ifdef HAL_PWR_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @addtogroup PWREx_Private_Constants + * @{ + */ +#define PWR_BKPREG_TIMEOUT_VALUE 1000U +/** + * @} + */ + + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ +/** @defgroup PWREx_Exported_Functions PWR Exported Functions + * @{ + */ + +/** @defgroup PWREx_Exported_Functions_Group1 Peripheral Extended features functions + * @brief Peripheral Extended features functions + * +@verbatim + + =============================================================================== + ##### Peripheral extended features functions ##### + =============================================================================== + + *** Main and Backup Regulators configuration *** + ================================================ + [..] + (+) The backup domain includes 4 Kbytes of backup SRAM accessible only from + the CPU, and address in 32-bit, 16-bit or 8-bit mode. Its content is + retained even in Standby or VBAT mode when the low power backup regulator + is enabled. It can be considered as an internal EEPROM when VBAT is + always present. You can use the HAL_PWREx_EnableBkUpReg() function to + enable the low power backup regulator. + + (+) When the backup domain is supplied by VDD (analog switch connected to VDD) + the backup SRAM is powered from VDD which replaces the VBAT power supply to + save battery life. + + (+) The backup SRAM is not mass erased by a tamper event. It is read + protected to prevent confidential data, such as cryptographic private + key, from being accessed. The backup SRAM can be erased only through + the Flash interface when a protection level change from level 1 to + level 0 is requested. + -@- Refer to the description of Read protection (RDP) in the Flash + programming manual. + + Refer to the product datasheets for more details. + + *** FLASH Power Down configuration **** + ======================================= + [..] + (+) By setting the FPDS bit in the PWR_CR register by using the + HAL_PWREx_EnableFlashPowerDown() function, the Flash memory also enters power + down mode when the device enters Stop mode. When the Flash memory + is in power down mode, an additional startup delay is incurred when + waking up from Stop mode. + +@endverbatim + * @{ + */ + +/** + * @brief Enables the Backup Regulator. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_PWREx_EnableBkUpReg(void) +{ + uint32_t tickstart = 0U; + + *(__IO uint32_t *) CSR_BRE_BB = (uint32_t)ENABLE; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait till Backup regulator ready flag is set */ + while(__HAL_PWR_GET_FLAG(PWR_FLAG_BRR) == RESET) + { + if((HAL_GetTick() - tickstart ) > PWR_BKPREG_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief Disables the Backup Regulator. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_PWREx_DisableBkUpReg(void) +{ + uint32_t tickstart = 0U; + + *(__IO uint32_t *) CSR_BRE_BB = (uint32_t)DISABLE; + + /* Get tick */ + tickstart = HAL_GetTick(); + + /* Wait till Backup regulator ready flag is set */ + while(__HAL_PWR_GET_FLAG(PWR_FLAG_BRR) != RESET) + { + if((HAL_GetTick() - tickstart ) > PWR_BKPREG_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + return HAL_OK; +} + +/** + * @brief Enables the Flash Power Down in Stop mode. + * @retval None + */ +void HAL_PWREx_EnableFlashPowerDown(void) +{ + *(__IO uint32_t *) CR_FPDS_BB = (uint32_t)ENABLE; +} + +/** + * @brief Disables the Flash Power Down in Stop mode. + * @retval None + */ +void HAL_PWREx_DisableFlashPowerDown(void) +{ + *(__IO uint32_t *) CR_FPDS_BB = (uint32_t)DISABLE; +} + +/** + * @} + */ + +/** + * @} + */ +#endif /* HAL_PWR_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/