/*******************************************************************************************************
*
* 函数名称:
*
* 函数功能:
*
* 入口参数:
*
* 出口参数: 无
*
* 说明:
*
*******************************************************************************************************/
void FlashWRDPUnlock(void)
{
uint32_t rt;
FlagStatus RDP_state;
FLASH_Status Flash_state;
uint32_t optcr_byte;
//如果匹配，进行Flash的读写解锁
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_OPERR|FLASH_FLAG_WRPERR| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
FLASH_Unlock();
FLASH_OB_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_OPERR|FLASH_FLAG_WRPERR| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
rt = FLASH_OB_GetWRP();
do
{
//FlashWRPLock(WRITE, WRP_Sector_All);
FLASH_OB_WRPConfig(WRP_Sector_All, DISABLE); //开启写保护
}while(FLASH_OB_Launch() != FLASH_COMPLETE);
rt = FLASH_OB_GetWRP();
RDP_state = FLASH_OB_GetRDP();
do
{
FLASH_OB_RDPConfig(OB_RDP_Level_0);//关闭读保护
}while(FLASH_OB_Launch() != FLASH_COMPLETE);
RDP_state = FLASH_OB_GetRDP();
FLASH_OB_Lock();
FLASH_Lock();
}
/**
* @brief Get the Option byte configuration
* @note The parameter Banks of the pOBInit structure must be exclusively FLASH_BANK_1 or FLASH_BANK_2
as this parameter is use to get the given Bank WRP, PCROP and secured area.
* @param pOBInit pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @retval None
*/
void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
{
/* Check the parameters */
assert_param(IS_FLASH_BANK_EXCLUSIVE(pOBInit->Banks));
pOBInit->OptionType = (OPTIONBYTE_WRP | OPTIONBYTE_RDP | \
OPTIONBYTE_USER | OPTIONBYTE_PCROP | \
OPTIONBYTE_BOR | OPTIONBYTE_BOOTADD | \
OPTIONBYTE_SECURE_AREA);
/* Get write protection on the selected area */
FLASH_OB_GetWRP(&(pOBInit->WRPState), &(pOBInit->WRPSector), pOBInit->Banks);
/* Get Read protection level */
pOBInit->RDPLevel = FLASH_OB_GetRDP();
/* Get the user option bytes */
pOBInit->USERConfig = FLASH_OB_GetUser();
/* Get the Proprietary code readout protection */
FLASH_OB_GetPCROP(&(pOBInit->PCROPConfig), &(pOBInit->PCROPStartAddr), &(pOBInit->PCROPEndAddr), pOBInit->Banks);
/*Get BOR Level*/
pOBInit->BORLevel = FLASH_OB_GetBOR();
/*Get Boot Address*/
FLASH_OB_GetBootAdd(&(pOBInit->BootAddr0), &(pOBInit->BootAddr1));
/*Get Bank Secure area*/
FLASH_OB_GetSecureArea(&(pOBInit->SecureAreaConfig), &(pOBInit->SecureAreaStartAddr), &(pOBInit->SecureAreaEndAddr), pOBInit->Banks);
}
/**
* @brief Get the Option byte configuration
* @param pOBInit pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @retval None
*/
void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
{
pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER;
/*Get WRP*/
pOBInit->WRPPage = FLASH_OB_GetWRP();
/*Get RDP Level*/
pOBInit->RDPLevel = FLASH_OB_GetRDP();
/*Get USER*/
pOBInit->USERConfig = FLASH_OB_GetUser();
}
void FlashWRP(void)
{
uint32_t rt;
FlagStatus RDP_state;
FLASH_Unlock();
FLASH_OB_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_OPERR|FLASH_FLAG_WRPERR| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
RDP_state = FLASH_OB_GetRDP();
rt = FLASH_OB_GetWRP();
do
{
FLASH_OB_WRPConfig(WRP_Sector_All, ENABLE); //开启写保护
}while(FLASH_OB_Launch() != FLASH_COMPLETE);
rt = FLASH_OB_GetWRP();
FLASH_OB_Lock();
FLASH_Lock();
}
/*******************************************************************************************************
*
* 函数名称:
*
* 函数功能:
*
* 入口参数:
*
* 出口参数: 无
*
* 说明:
*
*******************************************************************************************************/
void FlashWRPUnlock(uint8_t sector_num)
{
//FLASH_Unlock();
FLASH_OB_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_OPERR|FLASH_FLAG_WRPERR| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
if(!(FLASH_OB_GetWRP() & (0x1<<sector_num)))
{
FLASH_OB_WRPConfig((0x1<<sector_num), DISABLE); //开启写保护
}
FLASH_OB_Lock();
//FLASH_Lock();
}
/**
* @brief Get the Option byte configuration
* @param pOBInit: pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @retval None
*/
void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
{
pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER | OPTIONBYTE_BOR;
/*Get WRP*/
pOBInit->WRPSector = (uint32_t)FLASH_OB_GetWRP();
/*Get RDP Level*/
pOBInit->RDPLevel = (uint32_t)FLASH_OB_GetRDP();
/*Get USER*/
pOBInit->USERConfig = (uint8_t)FLASH_OB_GetUser();
/*Get BOR Level*/
pOBInit->BORLevel = (uint32_t)FLASH_OB_GetBOR();
}
/**
* @brief Disables the write protection of user desired pages
* @param None
* @retval 0: Write Protection successfully disabled
* 1: Error: Flash write unprotection failed
* 2: Flash memory is not write protected
*/
uint32_t FLASH_If_DisableWriteProtection(void)
{
uint32_t UserMemoryMask = 0, WRPR = 0;
FLASH_Status status = FLASH_BUSY;
/* Clear all FLASH flags */
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR | FLASH_FLAG_BSY);
/* Get Write protection */
WRPR = FLASH_OB_GetWRP();
/* Test if user memory is write protected */
if (FLASH_If_GetWriteProtectionStatus() != 0x00)
{
/* Enable the FLASH option byte access */
FLASH_OB_Unlock();
/* Erase option bytes */
status = FLASH_OB_Erase();
/* Compute the User_Mask */
UserMemoryMask = FLASH_PROTECTED_PAGES | WRPR;
if (UserMemoryMask != 0xFFFFFFFF)
{
/* Disable Write protection */
status = FLASH_OB_EnableWRP((uint32_t)~UserMemoryMask);
}
if (status == FLASH_COMPLETE)
{
/* Write Protection successfully disabled */
return (0);
}
else
{
/* Error: Flash write unprotection failed */
return (1);
}
}
else
{
/* Flash memory is not write protected */
return(2);
}
}
OSStatus internalFlashProtect(uint32_t StartAddress, uint32_t EndAddress, bool enable)
{
OSStatus err = kNoErr;
uint16_t WRP = 0x0;
uint32_t StartSector, EndSector, i = 0;
bool needupdate = false;
/* Get the sector where start the user flash area */
StartSector = _GetWRPSector(StartAddress);
EndSector = _GetWRPSector(EndAddress);
for(i = StartSector; i <= EndSector; i=i<<1)
{
WRP = FLASH_OB_GetWRP();
if( ( enable == true && (WRP & i) == 0x0 ) ||
( enable == false && (WRP & i) ) ) {
continue;
}
if( needupdate == false){
FLASH_OB_Unlock( );
needupdate = true;
}
if( enable == true )
FLASH_OB_WRPConfig( i, ENABLE );
else
FLASH_OB_WRPConfig( i, DISABLE );
}
if( needupdate == true){
FLASH_OB_Launch( );
FLASH_OB_Lock( );
}
return err;
}
/**
* @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_stm32f0xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f0xx.c file
*/
/* Unlock the Flash Program Erase controller */
FLASH_Unlock();
FLASH_OB_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPERR);
/* Get pages write protection status */
WRPR_Value = FLASH_OB_GetWRP();
#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_OB_Erase();
/* Check if there is write protected pages */
if(ProtectedPages != 0x0)
{
/* Restore write protected pages */
FLASHStatus = FLASH_OB_EnableWRP(ProtectedPages);
}
/* Generate System Reset to load the new option byte values */
FLASH_OB_Launch();
}
#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_OB_Erase();
/* Enable the pages write protection */
FLASHStatus = FLASH_OB_EnableWRP(ProtectedPages);
/* Generate System Reset to load the new option byte values */
FLASH_OB_Launch();
}
#endif /* WRITE_PROTECTION_DISABLE */
#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 pending flags */
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_PGERR |FLASH_FLAG_WRPERR);
/* 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 /* FLASH_PAGE_PROGRAM */
while (1)
{
}
}
/**
* @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_stm32f40xx.s/startup_stm32f427x.s) before to branch to
application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* Initialize LEDs mounted on EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Initialize Key Button mounted on EVAL board */
STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_GPIO);
/* Test if Key push-button on EVAL board is pressed */
if (STM_EVAL_PBGetState(BUTTON_KEY) == 0x00)
{
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
if (SectorsWRPStatus == 0x00)
{
/* If FLASH_WRP_SECTORS are write protected, disable the write protection */
/* Enable the Flash option control register access */
FLASH_OB_Unlock();
/* Disable FLASH_WRP_SECTORS write protection */
FLASH_OB_WRPConfig(FLASH_WRP_SECTORS, DISABLE);
/* Start the Option Bytes programming process */
if (FLASH_OB_Launch() != FLASH_COMPLETE)
{
/* User can add here some code to deal with this error */
while (1)
{
}
}
/* Disable the Flash option control register access (recommended to protect
the option Bytes against possible unwanted operations) */
FLASH_OB_Lock();
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
/* Check if FLASH_WRP_SECTORS write protection is disabled */
if (SectorsWRPStatus == FLASH_WRP_SECTORS)
{
/* OK, turn ON LED1 */
STM_EVAL_LEDOn(LED1);
}
else
{
/* KO, turn ON LED3 */
STM_EVAL_LEDOn(LED3);
}
}
else
{ /* If FLASH_WRP_SECTORS are not write protected, enable the write protection */
/* Enable the Flash option control register access */
FLASH_OB_Unlock();
/* Enable FLASH_WRP_SECTORS write protection */
FLASH_OB_WRPConfig(FLASH_WRP_SECTORS, ENABLE);
/* Start the Option Bytes programming process */
if (FLASH_OB_Launch() != FLASH_COMPLETE)
{
/* User can add here some code to deal with this error */
while (1)
{
}
}
/* Disable the Flash option control register access (recommended to protect
the option Bytes against possible unwanted operations) */
FLASH_OB_Lock();
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
/* Check if FLASH_WRP_SECTORS are write protected */
if (SectorsWRPStatus == 0x00)
{
/* OK, turn ON LED4 */
STM_EVAL_LEDOn(LED4);
}
else
{
/* KO, turn ON LED3 */
STM_EVAL_LEDOn(LED3);
}
}
}
/* Turn ON LED2 */
STM_EVAL_LEDOn(LED2);
while (1)
{
}
}
/**
* @brief Disable the write protection of the desired pages
* @note An option byte erase is done automatically in this function.
* @note When the memory read protection level is selected (RDP level = 1),
* it is not possible to program or erase the flash page i if
* debug features are connected or boot code is executed in RAM, even if nWRPi = 1
*
* @param WriteProtectPage: specifies the page(s) to be write unprotected.
* The value of this parameter depend on device used within the same series
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage)
{
HAL_StatusTypeDef status = HAL_OK;
uint16_t WRP0_Data = 0xFFFF;
#if defined(FLASH_WRP1_WRP1)
uint16_t WRP1_Data = 0xFFFF;
#endif /* FLASH_WRP1_WRP1 */
#if defined(FLASH_WRP2_WRP2)
uint16_t WRP2_Data = 0xFFFF;
#endif /* FLASH_WRP2_WRP2 */
#if defined(FLASH_WRP3_WRP3)
uint16_t WRP3_Data = 0xFFFF;
#endif /* FLASH_WRP3_WRP3 */
/* Check the parameters */
assert_param(IS_OB_WRP(WriteProtectPage));
/* Get current write protected pages and the new pages to be unprotected ******/
WriteProtectPage = (FLASH_OB_GetWRP() | WriteProtectPage);
#if defined(OB_WRP_PAGES0TO15MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
#elif defined(OB_WRP_PAGES0TO31MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
#endif /* OB_WRP_PAGES0TO31MASK */
#if defined(OB_WRP_PAGES16TO31MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8);
#elif defined(OB_WRP_PAGES32TO63MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8);
#endif /* OB_WRP_PAGES32TO63MASK */
#if defined(OB_WRP_PAGES64TO95MASK)
WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES64TO95MASK) >> 16);
#endif /* OB_WRP_PAGES64TO95MASK */
#if defined(OB_WRP_PAGES32TO47MASK)
WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
#endif /* OB_WRP_PAGES32TO47MASK */
#if defined(OB_WRP_PAGES96TO127MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES96TO127MASK) >> 24);
#elif defined(OB_WRP_PAGES48TO255MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO255MASK) >> 24);
#elif defined(OB_WRP_PAGES48TO511MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO511MASK) >> 24);
#elif defined(OB_WRP_PAGES48TO127MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24);
#endif /* OB_WRP_PAGES96TO127MASK */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* To be able to write again option byte, need to perform a option byte erase */
status = HAL_FLASHEx_OBErase();
if (status == HAL_OK)
{
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
#if defined(FLASH_WRP0_WRP0)
if(WRP0_Data != 0xFF)
{
OB->WRP0 |= WRP0_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* FLASH_WRP0_WRP0 */
#if defined(FLASH_WRP1_WRP1)
if((status == HAL_OK) && (WRP1_Data != 0xFF))
{
OB->WRP1 |= WRP1_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* FLASH_WRP1_WRP1 */
#if defined(FLASH_WRP2_WRP2)
if((status == HAL_OK) && (WRP2_Data != 0xFF))
{
OB->WRP2 |= WRP2_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* FLASH_WRP2_WRP2 */
#if defined(FLASH_WRP3_WRP3)
if((status == HAL_OK) && (WRP3_Data != 0xFF))
{
OB->WRP3 |= WRP3_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* FLASH_WRP3_WRP3 */
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
}
return status;
}
/*******************************************************************************************************
*
* 函数名称:
*
* 函数功能:
*
* 入口参数:
*
* 出口参数: 无
*
* 说明:
*
*******************************************************************************************************/
int16_t DataAreaWRPUnlock(COMM_FRAME *pcf)
{
uint32_t wrp_state;
uint8_t rv_comm_buff[20];
uint16_t wrp_unlock_param[2];
uint8_t i;
uint8_t rt;
uint8_t buff[20];
FlagStatus RDP_state;
wrp_unlock_param[0] = MAKE_HWORD((pcf)->param[2], (pcf)->param[1]);
wrp_unlock_param[1] = MAKE_HWORD((pcf)->param[4], (pcf)->param[3]);
//加锁命令序列
for(i = 0; i < pcf->len - 5; i++)
{
rv_comm_buff[i] = pcf->param[5 + i];
}
//匹配加锁命令序列
rt = MemoryCmp(rv_comm_buff, UnlockBuff, sizeof(UnlockBuff));
if(rt)
{
//如果匹配，进行Flash的读写解锁
FLASH_Unlock();
FLASH_OB_Unlock();
FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_OPERR|FLASH_FLAG_WRPERR| FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR);
wrp_state = FLASH_OB_GetWRP();
if(!wrp_state)
{
do
{
FLASH_OB_WRPConfig(WRP_Sector_All, DISABLE); //关闭写保护
}while(FLASH_OB_Launch() != FLASH_COMPLETE);
buff[1] = 0;
}
else
{
buff[1] = 1;
}
//发送扇区擦除错误
buff[0] = FLASH_WRP_UNLOCK_CW;
SendFrame(UNIVER_ACK_CW, (uint8_t *)buff, 4); //2即2个字节,16bit
__disable_irq();
if(FLASH_OB_GetRDP() == SET)
{
do
{
FLASH_OB_RDPConfig(OB_RDP_Level_0);//关闭读保护
}while(FLASH_OB_Launch() != FLASH_COMPLETE);
}
else
{
buff[0] = FLASH_WRP_UNLOCK_CW;
buff[1] = 1;
SendFrame(UNIVER_ACK_CW, (uint8_t *)buff, 4); //2即2个字节,16bit
}
//解锁之后Flash全部擦除,RAM调试会执行到下面的程序
__enable_irq();
RDP_state = FLASH_OB_GetRDP();
FLASH_OB_Lock();
FLASH_Lock();
}
return 1;
}
/**
* @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_stm32f429_439xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* LCD initiatization */
LCD_Init();
LCD_LayerInit();
/* LTDC reload configuration */
LTDC_ReloadConfig(LTDC_IMReload);
/* Enable the LTDC */
LTDC_Cmd(ENABLE);
/* Set LCD foreground layer */
LCD_SetLayer(LCD_FOREGROUND_LAYER);
/* Initialize LEDs mounted on STM32F429I-DISCO */
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* Initialize User Button mounted on STM32F429I-DISCO */
STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
/* Display tset name on LCD */
LCD_Clear(LCD_COLOR_WHITE);
LCD_SetBackColor(LCD_COLOR_BLUE);
LCD_SetTextColor(LCD_COLOR_WHITE);
LCD_DisplayStringLine(LCD_LINE_4,(uint8_t*)" Flash Write ");
LCD_DisplayStringLine(LCD_LINE_5,(uint8_t*)"protection test");
LCD_DisplayStringLine(LCD_LINE_7,(uint8_t*)" Press User ");
LCD_DisplayStringLine(LCD_LINE_8,(uint8_t*)" push-button ");
while (1)
{
/* Wait for User push-button is pressed */
while (STM_EVAL_PBGetState(BUTTON_USER) != Bit_RESET)
{
}
/* Wait for User push-button is released */
while (STM_EVAL_PBGetState(BUTTON_USER) != Bit_SET)
{
}
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
if (SectorsWRPStatus == 0x00)
{
/* If FLASH_WRP_SECTORS are write protected, disable the write protection */
/* Enable the Flash option control register access */
FLASH_OB_Unlock();
/* Disable FLASH_WRP_SECTORS write protection */
FLASH_OB_WRPConfig(FLASH_WRP_SECTORS, DISABLE);
/* Start the Option Bytes programming process */
if (FLASH_OB_Launch() != FLASH_COMPLETE)
{
/* User can add here some code to deal with this error */
while (1)
{
}
}
/* Disable the Flash option control register access (recommended to protect
the option Bytes against possible unwanted operations) */
FLASH_OB_Lock();
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
/* Check if FLASH_WRP_SECTORS write protection is disabled */
if (SectorsWRPStatus == FLASH_WRP_SECTORS)
{
LCD_Clear(LCD_COLOR_GREEN);
LCD_SetTextColor(LCD_COLOR_BLACK);
LCD_DisplayStringLine(LCD_LINE_5,(uint8_t*)" Write ");
LCD_DisplayStringLine(LCD_LINE_6,(uint8_t*)" protection is ");
LCD_DisplayStringLine(LCD_LINE_7,(uint8_t*)" disabled ");
}
else
{
LCD_Clear(LCD_COLOR_RED);
LCD_SetTextColor(LCD_COLOR_BLACK);
LCD_DisplayStringLine(LCD_LINE_5,(uint8_t*)" Write ");
LCD_DisplayStringLine(LCD_LINE_6,(uint8_t*)" protection is ");
LCD_DisplayStringLine(LCD_LINE_7,(uint8_t*)" not disabled ");
}
}
else
{ /* If FLASH_WRP_SECTORS are not write protected, enable the write protection */
/* Enable the Flash option control register access */
FLASH_OB_Unlock();
/* Enable FLASH_WRP_SECTORS write protection */
FLASH_OB_WRPConfig(FLASH_WRP_SECTORS, ENABLE);
/* Start the Option Bytes programming process */
if (FLASH_OB_Launch() != FLASH_COMPLETE)
{
/* User can add here some code to deal with this error */
while (1)
{
}
}
/* Disable the Flash option control register access (recommended to protect
the option Bytes against possible unwanted operations) */
FLASH_OB_Lock();
/* Get FLASH_WRP_SECTORS write protection status */
SectorsWRPStatus = FLASH_OB_GetWRP() & FLASH_WRP_SECTORS;
/* Check if FLASH_WRP_SECTORS are write protected */
if (SectorsWRPStatus == 0x00)
{
LCD_Clear(LCD_COLOR_GREEN);
LCD_SetTextColor(LCD_COLOR_BLACK);
LCD_DisplayStringLine(LCD_LINE_5,(uint8_t*)" Write ");
LCD_DisplayStringLine(LCD_LINE_6,(uint8_t*)" protection is ");
LCD_DisplayStringLine(LCD_LINE_7,(uint8_t*)" enabled ");
}
else
{
LCD_Clear(LCD_COLOR_RED);
LCD_SetTextColor(LCD_COLOR_BLACK);
LCD_DisplayStringLine(LCD_LINE_5,(uint8_t*)" Write ");
LCD_DisplayStringLine(LCD_LINE_6,(uint8_t*)" protection is ");
LCD_DisplayStringLine(LCD_LINE_7,(uint8_t*)" not enabled ");
}
}
}
}
