diff options
Diffstat (limited to 'src/stm32lib/examples/BKP/Backup_Data/main.c')
| -rwxr-xr-x | src/stm32lib/examples/BKP/Backup_Data/main.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/src/stm32lib/examples/BKP/Backup_Data/main.c b/src/stm32lib/examples/BKP/Backup_Data/main.c new file mode 100755 index 0000000..83335e0 --- /dev/null +++ b/src/stm32lib/examples/BKP/Backup_Data/main.c @@ -0,0 +1,272 @@ +/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name : main.c
+* Author : MCD Application Team
+* Version : V2.0.1
+* Date : 06/13/2008
+* Description : Main program body.
+********************************************************************************
+* 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_lib.h"
+#include "platform_config.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+ErrorStatus HSEStartUpStatus;
+
+#ifdef USE_STM3210B_EVAL
+u16 BKPDataReg[BKP_DR_NUMBER] =
+ {
+ BKP_DR1, BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8,
+ BKP_DR9, BKP_DR10
+ };
+#elif defined USE_STM3210E_EVAL
+u16 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 */
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void NVIC_Configuration(void);
+void WriteToBackupReg(u16 FirstBackupData);
+u8 CheckBackupReg(u16 FirstBackupData);
+
+/* Private functions ---------------------------------------------------------*/
+/*******************************************************************************
+* Function Name : main
+* Description : Main program.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+int main(void)
+{
+#ifdef DEBUG
+ debug();
+#endif
+
+ /* System Clocks Configuration */
+ RCC_Configuration();
+
+ /* NVIC configuration */
+ NVIC_Configuration();
+
+ /* GPIO configuration */
+ GPIO_Configuration();
+
+ /* 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 led connected to GPIO_LED Pin8 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_8);
+
+ /* Check if Backup data registers are programmed */
+ if(CheckBackupReg(0x3210) == 0x00)
+ { /* Backup data registers values are correct */
+
+ /* Turn on led connected to GPIO_LED Pin6 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_6);
+ }
+ 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 led connected to GPIO_LED Pin7 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_7);
+ }
+ }
+
+ /* Turn on led connected to GPIO_LED Pin9 */
+ GPIO_SetBits(GPIO_LED, GPIO_Pin_9);
+
+ while (1)
+ {
+ }
+}
+
+/*******************************************************************************
+* Function Name : RCC_Configuration
+* Description : Configures the different system clocks.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void RCC_Configuration(void)
+{
+ /* RCC system reset(for debug purpose) */
+ RCC_DeInit();
+
+ /* Enable HSE */
+ RCC_HSEConfig(RCC_HSE_ON);
+
+ /* Wait till HSE is ready */
+ HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+ if(HSEStartUpStatus == SUCCESS)
+ {
+ /* Enable Prefetch Buffer */
+ FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+ /* Flash 2 wait state */
+ FLASH_SetLatency(FLASH_Latency_2);
+
+ /* HCLK = SYSCLK */
+ RCC_HCLKConfig(RCC_SYSCLK_Div1);
+
+ /* PCLK2 = HCLK */
+ RCC_PCLK2Config(RCC_HCLK_Div1);
+
+ /* PCLK1 = HCLK/2 */
+ RCC_PCLK1Config(RCC_HCLK_Div2);
+
+ /* PLLCLK = 8MHz * 9 = 72 MHz */
+ RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+ /* Enable PLL */
+ RCC_PLLCmd(ENABLE);
+
+ /* Wait till PLL is ready */
+ while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+ {
+ }
+
+ /* Select PLL as system clock source */
+ RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+ /* Wait till PLL is used as system clock source */
+ while(RCC_GetSYSCLKSource() != 0x08)
+ {
+ }
+ }
+
+ /* Enable GPIO_LED clock */
+ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_LED, ENABLE);
+}
+
+/*******************************************************************************
+* Function Name : GPIO_Configuration
+* Description : Configures the GPIO ports.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
+ /* Configure GPIO_LED Pin 6, Pin 7, Pin 8 and Pin 9 as Output push-pull ----*/
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+ GPIO_Init(GPIO_LED, &GPIO_InitStructure);
+}
+
+/*******************************************************************************
+* Function Name : NVIC_Configuration
+* Description : Configures NVIC and Vector Table base location.
+* Input : None
+* Output : None
+* Return : None
+*******************************************************************************/
+void NVIC_Configuration(void)
+{
+ /* Set the Vector Table base location at 0x08000000 */
+ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
+}
+
+#ifdef DEBUG
+/*******************************************************************************
+* Function Name : assert_failed
+* Description : Reports the name of the source file and the source line number
+* where the assert_param error has occurred.
+* Input : - file: pointer to the source file name
+* - line: assert_param error line source number
+* Output : None
+* Return : None
+*******************************************************************************/
+void assert_failed(u8* file, u32 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
+
+/*******************************************************************************
+* Function Name : WriteToBackupReg
+* Description : Writes data Backup DRx registers.
+* Input : FirstBackupData: data to be written to Backup data registers.
+* Output : None
+* Return : None
+*******************************************************************************/
+void WriteToBackupReg(u16 FirstBackupData)
+{
+ u32 index = 0;
+
+ for (index = 0; index < BKP_DR_NUMBER; index++)
+ {
+ BKP_WriteBackupRegister(BKPDataReg[index], FirstBackupData + (index * 0x5A));
+ }
+}
+
+/*******************************************************************************
+* Function Name : CheckBackupReg
+* Description : Checks if the Backup DRx registers values are correct or not.
+* Input : FirstBackupData: data to be compared with Backup data registers.
+* Output : None
+* Return : - 0: All Backup DRx registers values are correct
+* - Value different from 0: Number of the first Backup register
+* which value is not correct
+*******************************************************************************/
+u8 CheckBackupReg(u16 FirstBackupData)
+{
+ u32 index = 0;
+
+ for (index = 0; index < BKP_DR_NUMBER; index++)
+ {
+ if (BKP_ReadBackupRegister(BKPDataReg[index]) != (FirstBackupData + (index * 0x5A)))
+ {
+ return (index + 1);
+ }
+ }
+
+ return 0;
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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