0,0 → 1,311 |
/** |
****************************************************************************** |
* @file stm32f10x_bkp.c |
* @author MCD Application Team |
* @version V3.1.0 |
* @date 06/19/2009 |
* @brief This file provides all the BKP firmware functions. |
****************************************************************************** |
* @copy |
* |
* 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. |
* |
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2> |
*/ |
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/* Includes ------------------------------------------------------------------*/ |
#include "stm32f10x_bkp.h" |
#include "stm32f10x_rcc.h" |
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/** @addtogroup STM32F10x_StdPeriph_Driver |
* @{ |
*/ |
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/** @defgroup BKP |
* @brief BKP driver modules |
* @{ |
*/ |
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/** @defgroup BKP_Private_TypesDefinitions |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup BKP_Private_Defines |
* @{ |
*/ |
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/* ------------ BKP registers bit address in the alias region --------------- */ |
#define BKP_OFFSET (BKP_BASE - PERIPH_BASE) |
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/* --- CR Register ----*/ |
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/* 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)) |
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/* Alias word address of TPE bit */ |
#define TPE_BitNumber 0x00 |
#define CR_TPE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (TPE_BitNumber * 4)) |
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/* --- CSR Register ---*/ |
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/* 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)) |
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/* Alias word address of TIF bit */ |
#define TIF_BitNumber 0x09 |
#define CSR_TIF_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TIF_BitNumber * 4)) |
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/* Alias word address of TEF bit */ |
#define TEF_BitNumber 0x08 |
#define CSR_TEF_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (TEF_BitNumber * 4)) |
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/* ---------------------- BKP registers bit mask ------------------------ */ |
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/* RTCCR register bit mask */ |
#define RTCCR_CAL_Mask ((uint16_t)0xFF80) |
#define RTCCR_Mask ((uint16_t)0xFC7F) |
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/* CSR register bit mask */ |
#define CSR_CTE_Set ((uint16_t)0x0001) |
#define CSR_CTI_Set ((uint16_t)0x0002) |
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/** |
* @} |
*/ |
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/** @defgroup BKP_Private_Macros |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup BKP_Private_Variables |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup BKP_Private_FunctionPrototypes |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup BKP_Private_Functions |
* @{ |
*/ |
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/** |
* @brief Deinitializes the BKP peripheral registers to their default reset values. |
* @param None |
* @retval None |
*/ |
void BKP_DeInit(void) |
{ |
RCC_BackupResetCmd(ENABLE); |
RCC_BackupResetCmd(DISABLE); |
} |
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/** |
* @brief Configures the Tamper Pin active level. |
* @param BKP_TamperPinLevel: specifies the Tamper Pin active level. |
* This parameter can be one of the following values: |
* @arg BKP_TamperPinLevel_High: Tamper pin active on high level |
* @arg BKP_TamperPinLevel_Low: Tamper pin active on low level |
* @retval None |
*/ |
void BKP_TamperPinLevelConfig(uint16_t BKP_TamperPinLevel) |
{ |
/* Check the parameters */ |
assert_param(IS_BKP_TAMPER_PIN_LEVEL(BKP_TamperPinLevel)); |
*(__IO uint32_t *) CR_TPAL_BB = BKP_TamperPinLevel; |
} |
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/** |
* @brief Enables or disables the Tamper Pin activation. |
* @param NewState: new state of the Tamper Pin activation. |
* This parameter can be: ENABLE or DISABLE. |
* @retval None |
*/ |
void BKP_TamperPinCmd(FunctionalState NewState) |
{ |
/* Check the parameters */ |
assert_param(IS_FUNCTIONAL_STATE(NewState)); |
*(__IO uint32_t *) CR_TPE_BB = (uint32_t)NewState; |
} |
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/** |
* @brief Enables or disables the Tamper Pin Interrupt. |
* @param NewState: new state of the Tamper Pin Interrupt. |
* This parameter can be: ENABLE or DISABLE. |
* @retval None |
*/ |
void BKP_ITConfig(FunctionalState NewState) |
{ |
/* Check the parameters */ |
assert_param(IS_FUNCTIONAL_STATE(NewState)); |
*(__IO uint32_t *) CSR_TPIE_BB = (uint32_t)NewState; |
} |
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/** |
* @brief Select the RTC output source to output on the Tamper pin. |
* @param BKP_RTCOutputSource: specifies the RTC output source. |
* This parameter can be one of the following values: |
* @arg BKP_RTCOutputSource_None: no RTC output on the Tamper pin. |
* @arg BKP_RTCOutputSource_CalibClock: output the RTC clock with frequency |
* divided by 64 on the Tamper pin. |
* @arg BKP_RTCOutputSource_Alarm: output the RTC Alarm pulse signal on |
* the Tamper pin. |
* @arg BKP_RTCOutputSource_Second: output the RTC Second pulse signal on |
* the Tamper pin. |
* @retval None |
*/ |
void BKP_RTCOutputConfig(uint16_t BKP_RTCOutputSource) |
{ |
uint16_t 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; |
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/* Set CCO, ASOE and ASOS bits according to BKP_RTCOutputSource value */ |
tmpreg |= BKP_RTCOutputSource; |
/* Store the new value */ |
BKP->RTCCR = tmpreg; |
} |
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/** |
* @brief Sets RTC Clock Calibration value. |
* @param CalibrationValue: specifies the RTC Clock Calibration value. |
* This parameter must be a number between 0 and 0x7F. |
* @retval None |
*/ |
void BKP_SetRTCCalibrationValue(uint8_t CalibrationValue) |
{ |
uint16_t 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; |
} |
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/** |
* @brief Writes user data to the specified Data Backup Register. |
* @param BKP_DR: specifies the Data Backup Register. |
* This parameter can be BKP_DRx where x:[1, 42] |
* @param Data: data to write |
* @retval None |
*/ |
void BKP_WriteBackupRegister(uint16_t BKP_DR, uint16_t Data) |
{ |
__IO uint32_t tmp = 0; |
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/* Check the parameters */ |
assert_param(IS_BKP_DR(BKP_DR)); |
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tmp = (uint32_t)BKP_BASE; |
tmp += BKP_DR; |
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*(__IO uint32_t *) tmp = Data; |
} |
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/** |
* @brief Reads data from the specified Data Backup Register. |
* @param BKP_DR: specifies the Data Backup Register. |
* This parameter can be BKP_DRx where x:[1, 42] |
* @retval The content of the specified Data Backup Register |
*/ |
uint16_t BKP_ReadBackupRegister(uint16_t BKP_DR) |
{ |
__IO uint32_t tmp = 0; |
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/* Check the parameters */ |
assert_param(IS_BKP_DR(BKP_DR)); |
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tmp = (uint32_t)BKP_BASE; |
tmp += BKP_DR; |
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return (*(__IO uint16_t *) tmp); |
} |
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/** |
* @brief Checks whether the Tamper Pin Event flag is set or not. |
* @param None |
* @retval The new state of the Tamper Pin Event flag (SET or RESET). |
*/ |
FlagStatus BKP_GetFlagStatus(void) |
{ |
return (FlagStatus)(*(__IO uint32_t *) CSR_TEF_BB); |
} |
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/** |
* @brief Clears Tamper Pin Event pending flag. |
* @param None |
* @retval None |
*/ |
void BKP_ClearFlag(void) |
{ |
/* Set CTE bit to clear Tamper Pin Event flag */ |
BKP->CSR |= CSR_CTE_Set; |
} |
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/** |
* @brief Checks whether the Tamper Pin Interrupt has occurred or not. |
* @param None |
* @retval The new state of the Tamper Pin Interrupt (SET or RESET). |
*/ |
ITStatus BKP_GetITStatus(void) |
{ |
return (ITStatus)(*(__IO uint32_t *) CSR_TIF_BB); |
} |
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/** |
* @brief Clears Tamper Pin Interrupt pending bit. |
* @param None |
* @retval None |
*/ |
void BKP_ClearITPendingBit(void) |
{ |
/* Set CTI bit to clear Tamper Pin Interrupt pending bit */ |
BKP->CSR |= CSR_CTI_Set; |
} |
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/** |
* @} |
*/ |
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/** |
* @} |
*/ |
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/** |
* @} |
*/ |
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/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/ |