--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/FLASH/Write_Protection/main.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,211 @@
+/**
+  ******************************************************************************
+  * @file    FLASH/Write_Protection/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>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup FLASH_Write_Protection
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+/* Define the STM32F10x FLASH Page Size depending on the used device */
+#if defined (STM32F10X_HD) || defined (STM32F10X_HD_VL) || (STM32F10X_CL) || defined (STM32F10X_XL)
+  #define FLASH_PAGE_SIZE    ((uint16_t)0x800)
+  #define FLASH_PAGES_TO_BE_PROTECTED (FLASH_WRProt_Pages12to13 | FLASH_WRProt_Pages14to15)  
+#else
+  #define FLASH_PAGE_SIZE    ((uint16_t)0x400)
+  #define FLASH_PAGES_TO_BE_PROTECTED (FLASH_WRProt_Pages24to27 | FLASH_WRProt_Pages28to31)  
+#endif
+
+#define BANK1_WRITE_START_ADDR  ((uint32_t)0x08006000)
+#define BANK1_WRITE_END_ADDR    ((uint32_t)0x08008000)
+ 
+/* Uncomment this line to program the Falsh pages */
+//#define FLASH_PAGE_PROGRAM
+/* Uncomment this line to Enable Write Protection */
+//#define WRITE_PROTECTION_ENABLE
+/* Uncomment this line to Disable Write Protection */
+#define WRITE_PROTECTION_DISABLE
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/  
+uint32_t EraseCounter = 0x0, Address = 0x0;
+uint16_t Data = 0x1753;
+uint32_t WRPR_Value = 0xFFFFFFFF, ProtectedPages = 0x0;
+uint32_t NbrOfPage;
+volatile FLASH_Status FLASHStatus = FLASH_COMPLETE;
+volatile TestStatus MemoryProgramStatus = PASSED;
+
+/* Private function prototypes -----------------------------------------------*/  
+/* 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
+     */     
+  
+  /* Unlock the Flash Program Erase controller */  
+  FLASH_Unlock();
+
+  /* Get pages write protection status */
+  WRPR_Value = FLASH_GetWriteProtectionOptionByte();
+
+#ifdef WRITE_PROTECTION_DISABLE
+  
+  /* Get pages already write protected */
+  ProtectedPages = ~(WRPR_Value | FLASH_PAGES_TO_BE_PROTECTED);
+  
+  /* Check if desired pages are already write protected */
+  if((WRPR_Value | (~FLASH_PAGES_TO_BE_PROTECTED)) != 0xFFFFFFFF )
+  {
+    /* Erase all the option Bytes */
+    FLASHStatus = FLASH_EraseOptionBytes();
+    
+  /* Check if there is write protected pages */
+  if(ProtectedPages != 0x0)
+  {
+      /* Restore write protected pages */
+      FLASHStatus = FLASH_EnableWriteProtection(ProtectedPages);
+    }
+    /* Generate System Reset to load the new option byte values */
+    NVIC_SystemReset();
+  }
+
+#elif defined WRITE_PROTECTION_ENABLE
+
+  /* Get current write protected pages and the new pages to be protected */
+  ProtectedPages =  (~WRPR_Value) | FLASH_PAGES_TO_BE_PROTECTED; 
+  
+  /* Check if desired pages are not yet write protected */
+  if(((~WRPR_Value) & FLASH_PAGES_TO_BE_PROTECTED )!= FLASH_PAGES_TO_BE_PROTECTED)
+  {
+  
+    /* Erase all the option Bytes because if a program operation is 
+      performed on a protected page, the Flash memory returns a 
+      protection error */
+    FLASHStatus = FLASH_EraseOptionBytes();
+
+    /* Enable the pages write protection */
+    FLASHStatus = FLASH_EnableWriteProtection(ProtectedPages);
+  
+    /* Generate System Reset to load the new option byte values */
+    NVIC_SystemReset();
+  }
+  
+#endif
+
+#ifdef FLASH_PAGE_PROGRAM  
+  /* Get the number of pages to be erased */
+  NbrOfPage = (BANK1_WRITE_END_ADDR - BANK1_WRITE_START_ADDR) / FLASH_PAGE_SIZE;
+
+  /* The selected pages are not write protected */
+  if ( (WRPR_Value & FLASH_PAGES_TO_BE_PROTECTED) != 0x00)
+  {
+    /* Clear All pending flags */
+    FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP|FLASH_FLAG_PGERR |FLASH_FLAG_WRPRTERR);	
+
+    /* erase the FLASH pages */
+    for(EraseCounter = 0; (EraseCounter < NbrOfPage) && (FLASHStatus == FLASH_COMPLETE); EraseCounter++)
+    {
+      FLASHStatus = FLASH_ErasePage(BANK1_WRITE_START_ADDR + (FLASH_PAGE_SIZE * EraseCounter));
+    }
+  
+    /* FLASH Half Word program of data 0x1753 at addresses defined by  BANK1_WRITE_START_ADDR and BANK1_WRITE_END_ADDR */
+    Address = BANK1_WRITE_START_ADDR;
+
+    while((Address < BANK1_WRITE_END_ADDR) && (FLASHStatus == FLASH_COMPLETE))
+    {
+      FLASHStatus = FLASH_ProgramHalfWord(Address, Data);
+      Address = Address + 2;
+    }
+
+    /* Check the correctness of written data */
+    Address = BANK1_WRITE_START_ADDR;
+
+    while((Address < BANK1_WRITE_END_ADDR) && (MemoryProgramStatus != FAILED))
+    {
+      if((*(__IO uint16_t*) Address) != Data)
+      {
+        MemoryProgramStatus = FAILED;
+      }
+      Address += 2;
+    }
+  }
+  else
+  { 
+    /* Error to program the flash : The desired pages are write protected */ 
+    MemoryProgramStatus = FAILED;
+  }
+ 
+#endif
+
+  while (1)
+  {
+  }
+}
+
+#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) */
+
+  while (1)
+  {
+  }
+}
+
+#endif
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/