Mercurial > ~darius > hgwebdir.cgi > stm32temp
diff libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/FLASH/Write_Protection/main.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
---|---|
date | Mon, 03 Oct 2011 21:19:15 +1030 |
parents | |
children |
line wrap: on
line diff
--- /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>© 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****/