/**
******************************************************************************
* @file BKP/Tamper/main.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body.
******************************************************************************
* @attention
*
* 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.
*
*
© COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup BKP_Tamper
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#if defined USE_STM3210B_EVAL || defined USE_STM32100B_EVAL
#define BKP_DR_NUMBER 10
#else
#define BKP_DR_NUMBER 42
#endif /* USE_STM3210B_EVAL or USE_STM32100B_EVAL */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
#if defined USE_STM3210B_EVAL || defined USE_STM32100B_EVAL
uint16_t BKPDataReg[BKP_DR_NUMBER] =
{
BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8,
BKP_DR9, BKP_DR10
};
#else
uint16_t BKPDataReg[BKP_DR_NUMBER] =
{
BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8,
BKP_DR9, BKP_DR10, BKP_DR11, BKP_DR12, BKP_DR13, BKP_DR14, BKP_DR15, BKP_DR16,
BKP_DR17, BKP_DR18, BKP_DR19, BKP_DR20, BKP_DR21, BKP_DR22, BKP_DR23, BKP_DR24,
BKP_DR25, BKP_DR26, BKP_DR27, BKP_DR28, BKP_DR29, BKP_DR30, BKP_DR31, BKP_DR32,
BKP_DR33, BKP_DR34, BKP_DR35, BKP_DR36, BKP_DR37, BKP_DR38, BKP_DR39, BKP_DR40,
BKP_DR41, BKP_DR42
};
#endif /* USE_STM3210B_EVAL or USE_STM32100B_EVAL */
/* Private function prototypes -----------------------------------------------*/
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void WriteToBackupReg(uint16_t FirstBackupData);
uint32_t CheckBackupReg(uint16_t FirstBackupData);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
/* NVIC configuration */
NVIC_Configuration();
/* Initialize Leds mounted on STM3210X-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Enable PWR and BKP clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Enable write access to Backup domain */
PWR_BackupAccessCmd(ENABLE);
/* Disable Tamper pin */
BKP_TamperPinCmd(DISABLE);
/* Disable Tamper interrupt */
BKP_ITConfig(DISABLE);
/* Tamper pin active on low level */
BKP_TamperPinLevelConfig(BKP_TamperPinLevel_Low);
/* Clear Tamper pin Event(TE) pending flag */
BKP_ClearFlag();
/* Enable Tamper interrupt */
BKP_ITConfig(ENABLE);
/* Enable Tamper pin */
BKP_TamperPinCmd(ENABLE);
/* Write data to Backup DRx registers */
WriteToBackupReg(0xA53C);
/* Check if the written data are correct */
if(CheckBackupReg(0xA53C) == 0x00)
{
/* Turn on LED1 */
STM_EVAL_LEDOn(LED1);
}
else
{
/* Turn on LED2 */
STM_EVAL_LEDOn(LED2);
}
while (1)
{
}
}
/**
* @brief Configures NVIC and Vector Table base location.
* @param None
* @retval None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable TAMPER IRQChannel */
NVIC_InitStructure.NVIC_IRQChannel = TAMPER_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Writes data Backup DRx registers.
* @param FirstBackupData: data to be written to Backup data registers.
* @retval None
*/
void WriteToBackupReg(uint16_t FirstBackupData)
{
uint32_t index = 0;
for (index = 0; index < BKP_DR_NUMBER; index++)
{
BKP_WriteBackupRegister(BKPDataReg[index], FirstBackupData + (index * 0x5A));
}
}
/**
* @brief Checks if the Backup DRx registers values are correct or not.
* @param FirstBackupData: data to be compared with Backup data registers.
* @retval
* - 0: All Backup DRx registers values are correct
* - Value different from 0: Number of the first Backup register
* which value is not correct
*/
uint32_t CheckBackupReg(uint16_t FirstBackupData)
{
uint32_t index = 0;
for (index = 0; index < BKP_DR_NUMBER; index++)
{
if (BKP_ReadBackupRegister(BKPDataReg[index]) != (FirstBackupData + (index * 0x5A)))
{
return (index + 1);
}
}
return 0;
}
/**
* @brief Checks if the Backup DRx registers are reset or not.
* @param None
* @retval
* - 0: All Backup DRx registers are reset
* - Value different from 0: Number of the first Backup register
* not reset
*/
uint32_t IsBackupRegReset(void)
{
uint32_t index = 0;
for (index = 0; index < BKP_DR_NUMBER; index++)
{
if (BKP_ReadBackupRegister(BKPDataReg[index]) != 0x0000)
{
return (index + 1);
}
}
return 0;
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/