Peripheral Control functions

management functions More...

Collaboration diagram for Peripheral Control functions:

Functions
HAL_StatusTypeDef	HAL_FLASH_Unlock (void)
	Unlock the FLASH control register access.
HAL_StatusTypeDef	HAL_FLASH_Lock (void)
	Locks the FLASH control register access.
HAL_StatusTypeDef	HAL_FLASH_OB_Unlock (void)
	Unlock the FLASH Option Control Registers access.
HAL_StatusTypeDef	HAL_FLASH_OB_Lock (void)
	Lock the FLASH Option Control Registers access.
HAL_StatusTypeDef	HAL_FLASH_OB_Launch (void)
	Launch the option byte loading.

Detailed Description

management functions

Management functions.

 ===============================================================================
                      ##### Peripheral Control functions #####
 ===============================================================================  
    [..]
    This subsection provides a set of functions allowing to control the FLASH 
    memory operations.

Function Documentation

HAL_FLASH_Lock()

HAL_StatusTypeDef HAL_FLASH_Lock

(

void

)

Locks the FLASH control register access.

Locks the FLASH control registers access.

Return values

HAL

Status

Definition at line 474 of file stm32f4xx_hal_flash.c.

{
  /* Set the LOCK Bit to lock the FLASH Registers access */
  FLASH->CR |= FLASH_CR_LOCK;
  
  return HAL_OK;  
}

HAL_FLASH_OB_Launch()

HAL_StatusTypeDef HAL_FLASH_OB_Launch

(

void

)

Launch the option byte loading.

Launch the option bytes loading.

Return values

HAL

Status

Definition at line 518 of file stm32f4xx_hal_flash.c.

{
  /* Set the OPTSTRT bit in OPTCR register */
  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= FLASH_OPTCR_OPTSTRT;
 
  /* Wait for last operation to be completed */
  return(FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE)); 
}

Referenced by BOR_Set().

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HAL_FLASH_OB_Lock()

HAL_StatusTypeDef HAL_FLASH_OB_Lock

(

void

)

Lock the FLASH Option Control Registers access.

Return values

HAL

Status

Definition at line 506 of file stm32f4xx_hal_flash.c.

{
  /* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
  FLASH->OPTCR |= FLASH_OPTCR_OPTLOCK;
  
  return HAL_OK;  
}

Referenced by BOR_Set().

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HAL_FLASH_OB_Unlock()

HAL_StatusTypeDef HAL_FLASH_OB_Unlock

(

void

)

Unlock the FLASH Option Control Registers access.

Return values

HAL

Status

Definition at line 486 of file stm32f4xx_hal_flash.c.

{
  if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET)
  {
    /* Authorizes the Option Byte register programming */
    FLASH->OPTKEYR = FLASH_OPT_KEY1;
    FLASH->OPTKEYR = FLASH_OPT_KEY2;
  }
  else
  {
    return HAL_ERROR;
  }  
  
  return HAL_OK;  
}

Referenced by BOR_Set().

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HAL_FLASH_Unlock()

HAL_StatusTypeDef HAL_FLASH_Unlock

(

void

)

Unlock the FLASH control register access.

Unlock the FLASH control registers access.

Return values

HAL

Status

Definition at line 454 of file stm32f4xx_hal_flash.c.

{
  if((FLASH->CR & FLASH_CR_LOCK) != RESET)
  {
    /* Authorize the FLASH Registers access */
    FLASH->KEYR = FLASH_KEY1;
    FLASH->KEYR = FLASH_KEY2;
  }
  else
  {
    return HAL_ERROR;
  }
  
  return HAL_OK; 
}