From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- .../examples/FLASH/Write_Protection/main.c | 247 +++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100755 src/stm32lib/examples/FLASH/Write_Protection/main.c (limited to 'src/stm32lib/examples/FLASH/Write_Protection/main.c') diff --git a/src/stm32lib/examples/FLASH/Write_Protection/main.c b/src/stm32lib/examples/FLASH/Write_Protection/main.c new file mode 100755 index 0000000..ccae71f --- /dev/null +++ b/src/stm32lib/examples/FLASH/Write_Protection/main.c @@ -0,0 +1,247 @@ +/******************** (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 -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define StartAddr ((u32)0x08006000) +#define EndAddr ((u32)0x08008000) + +/* Uncomment this line to Enable Write Protection */ +//#define WriteProtection_Enable +/* Uncomment this line to Disable Write Protection */ +#define WriteProtection_Disable + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +u32 EraseCounter, Address; +u16 Data; +vu32 WRPR_Value = 0xFFFFFFFF, ProtectedPages = 0x0; +vu8 NbrOfPage; +volatile FLASH_Status FLASHStatus; +volatile TestStatus MemoryProgramStatus; +ErrorStatus HSEStartUpStatus; + +/* Private function prototypes -----------------------------------------------*/ +void NVIC_Configuration(void); +void RCC_Configuration(void); + +/* Private functions ---------------------------------------------------------*/ +/******************************************************************************* +* Function Name : main +* Description : Main program +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +int main(void) +{ +#ifdef DEBUG + debug(); +#endif + + FLASHStatus = FLASH_COMPLETE; + MemoryProgramStatus = PASSED; + Data = 0x1753; + EraseCounter = 0x0; + + /* RCC Configuration */ + RCC_Configuration(); + + /* NVIC Configuration */ + NVIC_Configuration(); + + /* Unlock the Flash Program Erase controller */ + FLASH_Unlock(); + + /* Define the number of page to be erased */ + NbrOfPage = (EndAddr - StartAddr) / FLASH_PAGE_SIZE; + + FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP|FLASH_FLAG_PGERR |FLASH_FLAG_WRPRTERR); + + /* Get pages write protection status */ + WRPR_Value = FLASH_GetWriteProtectionOptionByte(); + ProtectedPages = WRPR_Value & 0x000000C0; + +#ifdef WriteProtection_Disable + if (ProtectedPages == 0x00) + {/* Pages are write protected */ + + /* Disable the write protection */ + FLASHStatus = FLASH_EraseOptionBytes(); + + /* Generate System Reset to load the new option byte values */ + NVIC_GenerateSystemReset(); + } +#else + #ifdef WriteProtection_Enable + + if (ProtectedPages != 0x00) + {/* Pages not write protected */ + #ifdef USE_STM3210B_EVAL + /* Enable the pages write protection */ + FLASHStatus = FLASH_EnableWriteProtection(FLASH_WRProt_Pages24to27 |FLASH_WRProt_Pages28to31); + #else + /* Enable the pages write protection */ + FLASHStatus = FLASH_EnableWriteProtection(FLASH_WRProt_Pages12to13 |FLASH_WRProt_Pages14to15); + #endif + /* Generate System Reset to load the new option byte values */ + NVIC_GenerateSystemReset(); + } + #endif +#endif + + /* If Pages are not write protected, perform erase and program operations + Else nothing */ + if (ProtectedPages != 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(StartAddr + (FLASH_PAGE_SIZE * EraseCounter)); + } + + /* FLASH Half Word program of data 0x1753 at addresses defined by StartAddr and EndAddr */ + Address = StartAddr; + + while((Address < EndAddr) && (FLASHStatus == FLASH_COMPLETE)) + { + FLASHStatus = FLASH_ProgramHalfWord(Address, Data); + Address = Address + 2; + } + + /* Check the corectness of written data */ + Address = StartAddr; + + while((Address < EndAddr) && (MemoryProgramStatus != FAILED)) + { + if((*(vu16*) Address) != Data) + { + MemoryProgramStatus = FAILED; + } + Address += 2; + } + + } + + 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) + { + } + } +} + +/******************************************************************************* +* Function Name : NVIC_Configuration +* Description : Configures Vector Table base location. +* Input : None +* Output : None +* Return : None +*******************************************************************************/ +void NVIC_Configuration(void) +{ +#ifdef VECT_TAB_RAM + /* Set the Vector Table base location at 0x20000000 */ + NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); +#else /* VECT_TAB_FLASH */ + /* Set the Vector Table base location at 0x08000000 */ + NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0); +#endif +} + +#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) */ + + while (1) + { + } +} +#endif + +/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3