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-/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
-* File Name : stm32f10x_bkp.c
-* Author : MCD Application Team
-* Version : V2.0.2
-* Date : 07/11/2008
-* Description : This file provides all the BKP firmware functions.
-********************************************************************************
-* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
-* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
-* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
-* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
-* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
-* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-*******************************************************************************/
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x_bkp.h"
-#include "stm32f10x_rcc.h"
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* ------------ BKP registers bit address in the alias region ----------- */
-#define BKP_OFFSET (BKP_BASE - PERIPH_BASE)
-
-/* --- CR Register ---*/
-/* Alias word address of TPAL bit */
-#define CR_OFFSET (BKP_OFFSET + 0x30)
-#define TPAL_BitNumber 0x01
-#define CR_TPAL_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (TPAL_BitNumber * 4))
-
-/* Alias word address of TPE bit */
-#define TPE_BitNumber 0x00
-#define CR_TPE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (TPE_BitNumber * 4))
-
-/* --- CSR Register ---*/
-/* Alias word address of TPIE bit */
-#define CSR_OFFSET (BKP_OFFSET + 0x34)
-#define TPIE_BitNumber 0x02
-#define CSR_TPIE_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TPIE_BitNumber * 4))
-
-/* Alias word address of TIF bit */
-#define TIF_BitNumber 0x09
-#define CSR_TIF_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TIF_BitNumber * 4))
-
-/* Alias word address of TEF bit */
-#define TEF_BitNumber 0x08
-#define CSR_TEF_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEF_BitNumber * 4))
-
-
-/* ---------------------- BKP registers bit mask ------------------------ */
-/* RTCCR register bit mask */
-#define RTCCR_CAL_Mask ((u16)0xFF80)
-#define RTCCR_Mask ((u16)0xFC7F)
-
-/* CSR register bit mask */
-#define CSR_CTE_Set ((u16)0x0001)
-#define CSR_CTI_Set ((u16)0x0002)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/* Private functions ---------------------------------------------------------*/
-
-/*******************************************************************************
-* Function Name : BKP_DeInit
-* Description : Deinitializes the BKP peripheral registers to their default
-* reset values.
-* Input : None
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_DeInit(void)
-{
- RCC_BackupResetCmd(ENABLE);
- RCC_BackupResetCmd(DISABLE);
-}
-
-/*******************************************************************************
-* Function Name : BKP_TamperPinLevelConfig
-* Description : Configures the Tamper Pin active level.
-* Input : - BKP_TamperPinLevel: specifies the Tamper Pin active level.
-* This parameter can be one of the following values:
-* - BKP_TamperPinLevel_High: Tamper pin active on high level
-* - BKP_TamperPinLevel_Low: Tamper pin active on low level
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_TamperPinLevelConfig(u16 BKP_TamperPinLevel)
-{
- /* Check the parameters */
- assert_param(IS_BKP_TAMPER_PIN_LEVEL(BKP_TamperPinLevel));
-
- *(vu32 *) CR_TPAL_BB = BKP_TamperPinLevel;
-}
-
-/*******************************************************************************
-* Function Name : BKP_TamperPinCmd
-* Description : Enables or disables the Tamper Pin activation.
-* Input : - NewState: new state of the Tamper Pin activation.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_TamperPinCmd(FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- *(vu32 *) CR_TPE_BB = (u32)NewState;
-}
-
-/*******************************************************************************
-* Function Name : BKP_ITConfig
-* Description : Enables or disables the Tamper Pin Interrupt.
-* Input : - NewState: new state of the Tamper Pin Interrupt.
-* This parameter can be: ENABLE or DISABLE.
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_ITConfig(FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_FUNCTIONAL_STATE(NewState));
-
- *(vu32 *) CSR_TPIE_BB = (u32)NewState;
-}
-
-/*******************************************************************************
-* Function Name : BKP_RTCOutputConfig
-* Description : Select the RTC output source to output on the Tamper pin.
-* Input : - BKP_RTCOutputSource: specifies the RTC output source.
-* This parameter can be one of the following values:
-* - BKP_RTCOutputSource_None: no RTC output on the Tamper pin.
-* - BKP_RTCOutputSource_CalibClock: output the RTC clock
-* with frequency divided by 64 on the Tamper pin.
-* - BKP_RTCOutputSource_Alarm: output the RTC Alarm pulse
-* signal on the Tamper pin.
-* - BKP_RTCOutputSource_Second: output the RTC Second pulse
-* signal on the Tamper pin.
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_RTCOutputConfig(u16 BKP_RTCOutputSource)
-{
- u16 tmpreg = 0;
-
- /* Check the parameters */
- assert_param(IS_BKP_RTC_OUTPUT_SOURCE(BKP_RTCOutputSource));
-
- tmpreg = BKP->RTCCR;
-
- /* Clear CCO, ASOE and ASOS bits */
- tmpreg &= RTCCR_Mask;
-
- /* Set CCO, ASOE and ASOS bits according to BKP_RTCOutputSource value */
- tmpreg |= BKP_RTCOutputSource;
-
- /* Store the new value */
- BKP->RTCCR = tmpreg;
-}
-
-/*******************************************************************************
-* Function Name : BKP_SetRTCCalibrationValue
-* Description : Sets RTC Clock Calibration value.
-* Input : - CalibrationValue: specifies the RTC Clock Calibration value.
-* This parameter must be a number between 0 and 0x7F.
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_SetRTCCalibrationValue(u8 CalibrationValue)
-{
- u16 tmpreg = 0;
-
- /* Check the parameters */
- assert_param(IS_BKP_CALIBRATION_VALUE(CalibrationValue));
-
- tmpreg = BKP->RTCCR;
-
- /* Clear CAL[6:0] bits */
- tmpreg &= RTCCR_CAL_Mask;
-
- /* Set CAL[6:0] bits according to CalibrationValue value */
- tmpreg |= CalibrationValue;
-
- /* Store the new value */
- BKP->RTCCR = tmpreg;
-}
-
-/*******************************************************************************
-* Function Name : BKP_WriteBackupRegister
-* Description : Writes user data to the specified Data Backup Register.
-* Input : - BKP_DR: specifies the Data Backup Register.
-* This parameter can be BKP_DRx where x:[1, 42]
-* - Data: data to write
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_WriteBackupRegister(u16 BKP_DR, u16 Data)
-{
- /* Check the parameters */
- assert_param(IS_BKP_DR(BKP_DR));
-
- *(vu16 *) (BKP_BASE + BKP_DR) = Data;
-}
-
-/*******************************************************************************
-* Function Name : BKP_ReadBackupRegister
-* Description : Reads data from the specified Data Backup Register.
-* Input : - BKP_DR: specifies the Data Backup Register.
-* This parameter can be BKP_DRx where x:[1, 42]
-* Output : None
-* Return : The content of the specified Data Backup Register
-*******************************************************************************/
-u16 BKP_ReadBackupRegister(u16 BKP_DR)
-{
- /* Check the parameters */
- assert_param(IS_BKP_DR(BKP_DR));
-
- return (*(vu16 *) (BKP_BASE + BKP_DR));
-}
-
-/*******************************************************************************
-* Function Name : BKP_GetFlagStatus
-* Description : Checks whether the Tamper Pin Event flag is set or not.
-* Input : None
-* Output : None
-* Return : The new state of the Tamper Pin Event flag (SET or RESET).
-*******************************************************************************/
-FlagStatus BKP_GetFlagStatus(void)
-{
- return (FlagStatus)(*(vu32 *) CSR_TEF_BB);
-}
-
-/*******************************************************************************
-* Function Name : BKP_ClearFlag
-* Description : Clears Tamper Pin Event pending flag.
-* Input : None
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_ClearFlag(void)
-{
- /* Set CTE bit to clear Tamper Pin Event flag */
- BKP->CSR |= CSR_CTE_Set;
-}
-
-/*******************************************************************************
-* Function Name : BKP_GetITStatus
-* Description : Checks whether the Tamper Pin Interrupt has occurred or not.
-* Input : None
-* Output : None
-* Return : The new state of the Tamper Pin Interrupt (SET or RESET).
-*******************************************************************************/
-ITStatus BKP_GetITStatus(void)
-{
- return (ITStatus)(*(vu32 *) CSR_TIF_BB);
-}
-
-/*******************************************************************************
-* Function Name : BKP_ClearITPendingBit
-* Description : Clears Tamper Pin Interrupt pending bit.
-* Input : None
-* Output : None
-* Return : None
-*******************************************************************************/
-void BKP_ClearITPendingBit(void)
-{
- /* Set CTI bit to clear Tamper Pin Interrupt pending bit */
- BKP->CSR |= CSR_CTI_Set;
-}
-
-/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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