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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_STM32F103_Keil/] [STM32F10xFWLib/] [src/] [stm32f10x_bkp.c] - Rev 610
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/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** * File Name : stm32f10x_bkp.c * Author : MCD Application Team * Date First Issued : 09/29/2006 * Description : This file provides all the BKP firmware functions. ******************************************************************************** * History: * 04/02/2007: V0.2 * 02/05/2007: V0.1 * 09/29/2006: V0.01 ******************************************************************************** * THE PRESENT SOFTWARE 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 SOFTWARE 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) /* --- RTCCR Register ---*/ /* Alias word address of CCO bit */ #define RTCCR_OFFSET (BKP_OFFSET + 0x2C) #define CCO_BitNumber 0x07 #define RTCCR_CCO_BB (PERIPH_BB_BASE + (RTCCR_OFFSET * 32) + (CCO_BitNumber * 4)) /* --- 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) /* 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(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(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(IS_FUNCTIONAL_STATE(NewState)); *(vu32 *) CSR_TPIE_BB = (u32)NewState; } /******************************************************************************* * Function Name : BKP_RTCCalibrationClockOutputCmd * Description : Enables or disables the output of the Calibration Clock. * Input : - NewState: new state of the Calibration Clock output. * This parameter can be: ENABLE or DISABLE. * Output : None * Return : None *******************************************************************************/ void BKP_RTCCalibrationClockOutputCmd(FunctionalState NewState) { /* Check the parameters */ assert(IS_FUNCTIONAL_STATE(NewState)); *(vu32 *) RTCCR_CCO_BB = (u32)NewState; } /******************************************************************************* * 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(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, 10] * - Data: data to write * Output : None * Return : None *******************************************************************************/ void BKP_WriteBackupRegister(u16 BKP_DR, u16 Data) { /* Check the parameters */ assert(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, 10] * Output : None * Return : The content of the specified Data Backup Register *******************************************************************************/ u16 BKP_ReadBackupRegister(u16 BKP_DR) { /* Check the parameters */ assert(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 2007 STMicroelectronics *****END OF FILE****/
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