diff options
Diffstat (limited to 'src/stm32lib/examples/FLASH/Write_Protection/main.c')
| -rwxr-xr-x | src/stm32lib/examples/FLASH/Write_Protection/main.c | 247 |
1 files changed, 247 insertions, 0 deletions
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****/
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