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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c')
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diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c new file mode 100644 index 0000000..a063733 --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/BKP/Backup_Data/main.c @@ -0,0 +1,201 @@ +/** + ****************************************************************************** + * @file BKP/Backup_Data/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. + * + * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" +#include "stm32_eval.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup BKP_Backup_Data + * @{ + */ + +/* 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 WriteToBackupReg(uint16_t FirstBackupData); +uint8_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 + */ + + /* 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); + + /* Clear Tamper pin Event(TE) pending flag */ + BKP_ClearFlag(); + + /* Check if the Power On Reset flag is set */ + if(RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET) + { + /* Clear reset flags */ + RCC_ClearFlag(); + + /* Turn on LED3 */ + STM_EVAL_LEDOn(LED3); + + /* Check if Backup data registers are programmed */ + if(CheckBackupReg(0x3210) == 0x00) + { /* Backup data registers values are correct */ + + /* Turn on LED1 */ + STM_EVAL_LEDOn(LED1); + } + else + { /* Backup data registers values are not correct or they are not yet + programmed (when the first time the program is executed) */ + + /* Write data to Backup data registers */ + WriteToBackupReg(0x3210); + + /* Turn on LED2 */ + STM_EVAL_LEDOn(LED2); + } + } + + /* Turn on LED4 */ + STM_EVAL_LEDOn(LED4); + + while (1) + { + } +} + +/** + * @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 + */ +uint8_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; +} + +#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****/ |