1215 lines
40 KiB
C
1215 lines
40 KiB
C
/**
|
|
******************************************************************************
|
|
* @file hk32f0xx_flash.c
|
|
* @version V1.0.1
|
|
* @date 2019-08-15
|
|
===============================================================================
|
|
##### How to use this driver #####
|
|
===============================================================================
|
|
[..] This driver provides functions to configure and program the Flash
|
|
memory of all HK32F0xx devices. These functions are split in 4 groups
|
|
(#) FLASH Interface configuration functions: this group includes the
|
|
management of following features:
|
|
(++) Set the latency
|
|
(++) Enable/Disable the prefetch buffer
|
|
|
|
(#) FLASH Memory Programming functions: this group includes all needed
|
|
functions to erase and program the main memory:
|
|
(++) Lock and Unlock the Flash interface.
|
|
(++) Erase function: Erase Page, erase all pages.
|
|
(++) Program functions: Half Word and Word write.
|
|
|
|
(#) FLASH Option Bytes Programming functions: this group includes all
|
|
needed functions to:
|
|
(++) Lock and Unlock the Flash Option bytes.
|
|
(++) Launch the Option Bytes loader
|
|
(++) Erase the Option Bytes
|
|
(++)Set/Reset the write protection
|
|
(++) Set the Read protection Level
|
|
(++) Program the user option Bytes
|
|
(++) Set/Reset the BOOT1 bit
|
|
(++) Enable/Disable the VDDA Analog Monitoring
|
|
(++) Get the user option bytes
|
|
(++) Get the Write protection
|
|
(++) Get the read protection status
|
|
|
|
(#) FLASH Interrupts and flag management functions: this group includes
|
|
all needed functions to:
|
|
(++) Enable/Disable the flash interrupt sources
|
|
(++) Get flags status
|
|
(++) Clear flags
|
|
(++) Get Flash operation status
|
|
(++) Wait for last flash operation
|
|
|
|
@endverbatim
|
|
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "hk32f0xx_flash.h"
|
|
|
|
/** @addtogroup HK32F0xx_StdPeriph_Driver
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup FLASH
|
|
* @brief FLASH driver modules
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/** @defgroup FLASH_Private_Functions
|
|
* @{
|
|
*/
|
|
|
|
/** @defgroup FLASH_Group1 FLASH Interface configuration functions
|
|
* @brief FLASH Interface configuration functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### FLASH Interface configuration functions #####
|
|
===============================================================================
|
|
|
|
[..] FLASH_Interface configuration_Functions, includes the following functions:
|
|
(+) void FLASH_SetLatency(uint32_t FLASH_Latency):
|
|
[..] To correctly read data from Flash memory, the number of wait states (LATENCY)
|
|
must be correctly programmed according to the frequency of the CPU clock (HCLK)
|
|
[..]
|
|
+--------------------------------------------- +
|
|
| Wait states | HCLK clock frequency (MHz) |
|
|
|---------------|------------------------------|
|
|
|0WS(1CPU cycle)| 0 < HCLK <= 24 |
|
|
|---------------|------------------------------|
|
|
|1WS(2CPU cycle)| 24 < HCLK <= 48 |
|
|
+----------------------------------------------+
|
|
[..]
|
|
(+) void FLASH_PrefetchBufferCmd(FunctionalState NewState);
|
|
[..]
|
|
All these functions don't need the unlock sequence.
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Sets the code latency value.
|
|
* @param FLASH_Latency: specifies the FLASH Latency value.
|
|
* This parameter can be one of the following values:
|
|
* @arg FLASH_Latency_0: FLASH Zero Latency cycle
|
|
* @arg FLASH_Latency_1: FLASH One Latency cycle
|
|
* @retval None
|
|
*/
|
|
void FLASH_SetLatency(uint32_t FLASH_Latency)
|
|
{
|
|
uint32_t tmpreg = 0;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_LATENCY(FLASH_Latency));
|
|
|
|
/* Read the ACR register */
|
|
tmpreg = FLASH->ACR;
|
|
|
|
/* Sets the Latency value */
|
|
tmpreg &= (uint32_t)(~((uint32_t)FLASH_ACR_LATENCY));
|
|
tmpreg |= FLASH_Latency;
|
|
|
|
/* Write the ACR register */
|
|
FLASH->ACR = tmpreg;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables or disables the Prefetch Buffer.
|
|
* @param NewState: new state of the FLASH prefetch buffer.
|
|
* This parameter can be: ENABLE or DISABLE.
|
|
* @retval None
|
|
*/
|
|
void FLASH_PrefetchBufferCmd(FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
|
|
if (NewState != DISABLE)
|
|
{
|
|
FLASH->ACR |= FLASH_ACR_PRFTBE;
|
|
}
|
|
else
|
|
{
|
|
FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_PRFTBE));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Checks whether the FLASH Prefetch Buffer status is set or not.
|
|
* @param None
|
|
* @retval FLASH Prefetch Buffer Status (SET or RESET).
|
|
*/
|
|
FlagStatus FLASH_GetPrefetchBufferStatus(void)
|
|
{
|
|
FlagStatus bitstatus = RESET;
|
|
|
|
if ((FLASH->ACR & FLASH_ACR_PRFTBS) != (uint32_t)RESET)
|
|
{
|
|
bitstatus = SET;
|
|
}
|
|
else
|
|
{
|
|
bitstatus = RESET;
|
|
}
|
|
/* Return the new state of FLASH Prefetch Buffer Status (SET or RESET) */
|
|
return bitstatus;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup FLASH_Group2 FLASH Memory Programming functions
|
|
* @brief FLASH Memory Programming functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### FLASH Memory Programming functions #####
|
|
===============================================================================
|
|
|
|
[..] The FLASH Memory Programming functions, includes the following functions:
|
|
(+) void FLASH_Unlock(void);
|
|
(+) void FLASH_Lock(void);
|
|
(+) FLASH_Status FLASH_ErasePage(uint32_t Page_Address);
|
|
(+) FLASH_Status FLASH_EraseAllPages(void);
|
|
(+) FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data);
|
|
(+) FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data);
|
|
|
|
[..] Any operation of erase or program should follow these steps:
|
|
|
|
(#) Call the FLASH_Unlock() function to enable the flash control register and
|
|
program memory access
|
|
(#) Call the desired function to erase page or program data
|
|
(#) Call the FLASH_Lock() to disable the flash program memory access
|
|
(recommended to protect the FLASH memory against possible unwanted operation)
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Unlocks the FLASH control register and program memory access.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void FLASH_Unlock(void)
|
|
{
|
|
if ((FLASH->CR & FLASH_CR_LOCK) != RESET)
|
|
{
|
|
/* Unlocking the program memory access */
|
|
FLASH->KEYR = FLASH_KEY1;
|
|
FLASH->KEYR = FLASH_KEY2;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Locks the Program memory access.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void FLASH_Lock(void)
|
|
{
|
|
/* Set the LOCK Bit to lock the FLASH control register and program memory access */
|
|
FLASH->CR |= FLASH_CR_LOCK;
|
|
}
|
|
|
|
/**
|
|
* @brief Erases a specified page in program memory.
|
|
* @note To correctly run this function, the FLASH_Unlock() function must be called before.
|
|
* @note Call the FLASH_Lock() to disable the flash memory access (recommended
|
|
* to protect the FLASH memory against possible unwanted operation)
|
|
* @param Page_Address: The page address in program memory to be erased.
|
|
* @note A Page is erased in the Program memory only if the address to load
|
|
* is the start address of a page (multiple of 1024 bytes).
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_ErasePage(uint32_t Page_Address)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_PROGRAM_ADDRESS(Page_Address));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the previous operation is completed, proceed to erase the page */
|
|
FLASH->CR |= FLASH_CR_PER;
|
|
FLASH->AR = Page_Address;
|
|
FLASH->CR |= FLASH_CR_STRT;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
/* Disable the PER Bit */
|
|
FLASH->CR &= ~FLASH_CR_PER;
|
|
}
|
|
|
|
/* Return the Erase Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Erases all FLASH pages.
|
|
* @note To correctly run this function, the FLASH_Unlock() function must be called before.
|
|
* @note Call the FLASH_Lock() to disable the flash memory access (recommended
|
|
* to protect the FLASH memory against possible unwanted operation)
|
|
* @param None
|
|
* @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
|
|
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_EraseAllPages(void)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* if the previous operation is completed, proceed to erase all pages */
|
|
FLASH->CR |= FLASH_CR_MER;
|
|
FLASH->CR |= FLASH_CR_STRT;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
/* Disable the MER Bit */
|
|
FLASH->CR &= ~FLASH_CR_MER;
|
|
}
|
|
|
|
/* Return the Erase Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Programs a word at a specified address.
|
|
* @note To correctly run this function, the FLASH_Unlock() function must be called before.
|
|
* @note Call the FLASH_Lock() to disable the flash memory access (recommended
|
|
* to protect the FLASH memory against possible unwanted operation)
|
|
* @param Address: specifies the address to be programmed.
|
|
* @param Data: specifies the data to be programmed.
|
|
* @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
|
|
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
__IO uint32_t tmp = 0;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the previous operation is completed, proceed to program the new first
|
|
half word */
|
|
FLASH->CR |= FLASH_CR_PG;
|
|
|
|
*(__IO uint16_t *)Address = (uint16_t)Data;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the previous operation is completed, proceed to program the new second
|
|
half word */
|
|
tmp = Address + 2;
|
|
|
|
*(__IO uint16_t *) tmp = Data >> 16;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
/* Disable the PG Bit */
|
|
FLASH->CR &= ~FLASH_CR_PG;
|
|
}
|
|
else
|
|
{
|
|
/* Disable the PG Bit */
|
|
FLASH->CR &= ~FLASH_CR_PG;
|
|
}
|
|
}
|
|
|
|
/* Return the Program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Programs a half word at a specified address.
|
|
* @note To correctly run this function, the FLASH_Unlock() function must be called before.
|
|
* @note Call the FLASH_Lock() to disable the flash memory access (recommended
|
|
* to protect the FLASH memory against possible unwanted operation)
|
|
* @param Address: specifies the address to be programmed.
|
|
* @param Data: specifies the data to be programmed.
|
|
* @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
|
|
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the previous operation is completed, proceed to program the new data */
|
|
FLASH->CR |= FLASH_CR_PG;
|
|
|
|
*(__IO uint16_t *)Address = Data;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
/* Disable the PG Bit */
|
|
FLASH->CR &= ~FLASH_CR_PG;
|
|
}
|
|
|
|
/* Return the Program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup FLASH_Group3 Option Bytes Programming functions
|
|
* @brief Option Bytes Programming functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Option Bytes Programming functions #####
|
|
===============================================================================
|
|
|
|
[..] The FLASH_Option Bytes Programming_functions, includes the following functions:
|
|
(+) void FLASH_OB_Unlock(void);
|
|
(+) void FLASH_OB_Lock(void);
|
|
(+) void FLASH_OB_Launch(void);
|
|
(+) FLASH_Status FLASH_OB_Erase(void);
|
|
(+) FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState);
|
|
(+) FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP);
|
|
(+) FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY);
|
|
(+) FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1);
|
|
(+) FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG);
|
|
(+) FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER);
|
|
(+) FLASH_OB_ProgramData(uint32_t Address, uint8_t Data);
|
|
(+) uint8_t FLASH_OB_GetUser(void);
|
|
(+) uint32_t FLASH_OB_GetWRP(void);
|
|
(+) FlagStatus FLASH_OB_GetRDP(void);
|
|
|
|
[..] Any operation of erase or program should follow these steps:
|
|
|
|
(#) Call the FLASH_OB_Unlock() function to enable the Option Bytes registers access
|
|
|
|
(#) Call one or several functions to program the desired option bytes
|
|
(++) FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the desired read Protection Level
|
|
(++) FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
|
|
=> to Enable/Disable the desired sector write protection
|
|
(++) FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
|
|
=> to configure the user option Bytes: IWDG, STOP and the Standby.
|
|
(++) FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1)
|
|
=> to set or reset BOOT1
|
|
(++) FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG)
|
|
=> to enable or disable the VDDA Analog Monitoring
|
|
(++) You can write all User Options bytes at once using a single function
|
|
by calling FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER)
|
|
(++) FLASH_OB_ProgramData(uint32_t Address, uint8_t Data) to program the
|
|
two half word in the option bytes
|
|
|
|
(#) Once all needed option bytes to be programmed are correctly written, call the
|
|
FLASH_OB_Launch(void) function to launch the Option Bytes programming process.
|
|
|
|
(#) Call the FLASH_OB_Lock() to disable the Option Bytes registers access (recommended
|
|
to protect the option Bytes against possible unwanted operations)
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Unlocks the option bytes block access.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void FLASH_OB_Unlock(void)
|
|
{
|
|
if ((FLASH->CR & FLASH_CR_OPTWRE) == RESET)
|
|
{
|
|
/* Unlocking the option bytes block access */
|
|
FLASH->OPTKEYR = FLASH_OPTKEY1;
|
|
FLASH->OPTKEYR = FLASH_OPTKEY2;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Locks the option bytes block access.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void FLASH_OB_Lock(void)
|
|
{
|
|
/* Set the OPTWREN Bit to lock the option bytes block access */
|
|
FLASH->CR &= ~FLASH_CR_OPTWRE;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Launch the option byte loading.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void FLASH_OB_Launch(void)
|
|
{
|
|
/* Set the OBL_Launch bit to launch the option byte loading */
|
|
FLASH->CR |= FLASH_CR_OBL_LAUNCH;
|
|
}
|
|
|
|
/**
|
|
* @brief Erases the FLASH option bytes.
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @note This functions erases all option bytes except the Read protection (RDP).
|
|
* @param None
|
|
* @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
|
|
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_Erase(void)
|
|
{
|
|
uint16_t rdptmp = OB_RDP_Level_0;
|
|
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Get the actual read protection Option Byte value */
|
|
if (FLASH_OB_GetRDP() != RESET)
|
|
{
|
|
rdptmp = 0x00;
|
|
}
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the previous operation is completed, proceed to erase the option bytes */
|
|
FLASH->CR |= FLASH_CR_OPTER;
|
|
FLASH->CR |= FLASH_CR_STRT;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the erase operation is completed, disable the OPTER Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTER;
|
|
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
/* Restore the last read protection Option Byte value */
|
|
OB->RDP = (uint16_t)rdptmp;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* if the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* Disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
}
|
|
/* Return the erase status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Write protects the desired pages
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @param OB_WRP: specifies the address of the pages to be write protected.
|
|
* This parameter can be:
|
|
* @arg OB_WRP_Pages0to3..OB_WRP_Pages60to63
|
|
* @arg OB_WRP_AllPages
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_EnableWRP(uint32_t OB_WRP)
|
|
{
|
|
uint16_t WRP0_Data = 0xFFFF, WRP1_Data = 0xFFFF;
|
|
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_WRP(OB_WRP));
|
|
|
|
OB_WRP = (uint32_t)(~OB_WRP);
|
|
WRP0_Data = (uint16_t)(OB_WRP & OB_WRP0_WRP0);
|
|
WRP1_Data = (uint16_t)((OB_WRP >> 8) & OB_WRP0_WRP0);
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
if (WRP0_Data != 0xFF)
|
|
{
|
|
OB->WRP0 = WRP0_Data;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
}
|
|
if ((status == FLASH_COMPLETE) && (WRP1_Data != 0xFF))
|
|
{
|
|
OB->WRP1 = WRP1_Data;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
}
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* if the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the write protection operation Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Enables or disables the read out protection.
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @param FLASH_ReadProtection_Level: specifies the read protection level.
|
|
* This parameter can be:
|
|
* @arg OB_RDP_Level_0: No protection
|
|
* @arg OB_RDP_Level_1: Read protection of the memory
|
|
* @arg OB_RDP_Level_2: Chip protection
|
|
* @note When enabling OB_RDP level 2 it's no more possible to go back to level 1 or 0
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_RDP(OB_RDP));
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
FLASH->CR |= FLASH_CR_OPTER;
|
|
FLASH->CR |= FLASH_CR_STRT;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* If the erase operation is completed, disable the OPTER Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTER;
|
|
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->RDP = OB_RDP;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* if the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* Disable the OPTER Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTER;
|
|
}
|
|
}
|
|
}
|
|
/* Return the protection operation Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @param OB_IWDG: Selects the WDG mode
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_IWDG_SW: Software WDG selected
|
|
* @arg OB_IWDG_HW: Hardware WDG selected
|
|
* @param OB_STOP: Reset event when entering STOP mode.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_STOP_NoRST: No reset generated when entering in STOP
|
|
* @arg OB_STOP_RST: Reset generated when entering in STOP
|
|
* @param OB_STDBY: Reset event when entering Standby mode.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY
|
|
* @arg OB_STDBY_RST: Reset generated when entering in STANDBY
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_IWDG_SOURCE(OB_IWDG));
|
|
assert_param(IS_OB_STOP_SOURCE(OB_STOP));
|
|
assert_param(IS_OB_STDBY_SOURCE(OB_STDBY));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = (uint16_t)((uint16_t)(OB_IWDG | OB_STOP) | (uint16_t)(OB_STDBY | 0xF8));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets or resets the BOOT1 option bit.
|
|
* @param OB_BOOT1: Set or Reset the BOOT1 option bit.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_BOOT1_RESET: BOOT1 option bit reset
|
|
* @arg OB_BOOT1_SET: BOOT1 option bit set
|
|
* @retval None
|
|
*/
|
|
FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_BOOT1(OB_BOOT1));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_BOOT1 | 0xEF;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets or resets the BOOT0 option bit.
|
|
* @note This function is applicable only for the HK32F042 devices.
|
|
* @param OB_BOOT0: Set or Reset the BOOT0 option bit.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_BOOT0_RESET: BOOT0 option bit reset
|
|
* @arg OB_BOOT0_SET: BOOT0 option bit set
|
|
* @retval None
|
|
*/
|
|
FLASH_Status FLASH_OB_BOOT0Config(uint8_t OB_BOOT0)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_BOOT0(OB_BOOT0));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_BOOT0 | 0xF7;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets or resets the BOOT0SW option bit.
|
|
* @note This function is applicable only for the HK32F042 devices.
|
|
* @param OB_BOOT0SW: Set or Reset the BOOT0_SW option bit.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_BOOT0_SW: BOOT0_SW option bit reset
|
|
* @arg OB_BOOT0_HW: BOOT0_SW option bit set
|
|
* @retval None
|
|
*/
|
|
FLASH_Status FLASH_OB_BOOT0SWConfig(uint8_t OB_BOOT0SW)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_BOOT0SW(OB_BOOT0SW));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_BOOT0SW | 0x7F;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets or resets the analogue monitoring on VDDA Power source.
|
|
* @param OB_VDDA_ANALOG: Selects the analog monitoring on VDDA Power source.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_VDDA_ANALOG_ON: Analog monitoring on VDDA Power source ON
|
|
* @arg OB_VDDA_ANALOG_OFF: Analog monitoring on VDDA Power source OFF
|
|
* @retval None
|
|
*/
|
|
FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_VDDA_ANALOG(OB_VDDA_ANALOG));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_VDDA_ANALOG | 0xDF;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* if the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Sets or resets the SRAM parity.
|
|
* @param OB_SRAM_Parity: Set or Reset the SRAM parity enable bit.
|
|
* This parameter can be one of the following values:
|
|
* @arg OB_SRAM_PARITY_SET: Set SRAM parity.
|
|
* @arg OB_SRAM_PARITY_RESET: Reset SRAM parity.
|
|
* @retval None
|
|
*/
|
|
FLASH_Status FLASH_OB_SRAMParityConfig(uint8_t OB_SRAM_Parity)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_SRAM_PARITY(OB_SRAM_Parity));
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_SRAM_Parity | 0xBF;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* if the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Programs the FLASH User Option Byte: IWDG_SW, RST_STOP, RST_STDBY,
|
|
* BOOT1 and VDDA ANALOG monitoring.
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @param OB_USER: Selects all user option bytes
|
|
* This parameter is a combination of the following values:
|
|
* @arg OB_IWDG_SW / OB_IWDG_HW: Software / Hardware WDG selected
|
|
* @arg OB_STOP_NoRST / OB_STOP_RST: No reset / Reset generated when entering in STOP
|
|
* @arg OB_STDBY_NoRST / OB_STDBY_RST: No reset / Reset generated when entering in STANDBY
|
|
* @arg OB_BOOT1_RESET / OB_BOOT1_SET: BOOT1 Reset / Set
|
|
* @arg OB_VDDA_ANALOG_ON / OB_VDDA_ANALOG_OFF: Analog monitoring on VDDA Power source ON / OFF
|
|
* @arg OB_SRAM_PARITY_SET / OB_SRAM_PARITY_RESET: SRAM Parity SET / RESET
|
|
* @arg OB_BOOT0_RESET / OB_BOOT0_SET: BOOT0 Reset / Set
|
|
* @arg OB_BOOT0_SW / OB_BOOT0_SW: BOOT0 pin disabled / BOOT0 pin bonded with GPIO
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enable the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
|
|
OB->USER = OB_USER;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte program Status */
|
|
return status;
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Programs a half word at a specified Option Byte Data address.
|
|
* @note To correctly run this function, the FLASH_OB_Unlock() function must be called before.
|
|
* @note Call the FLASH_OB_Lock() to disable the flash control register access and the option
|
|
* bytes (recommended to protect the FLASH memory against possible unwanted operation)
|
|
* @param Address: specifies the address to be programmed.
|
|
* This parameter can be 0x1FFFF804 or 0x1FFFF806.
|
|
* @param Data: specifies the data to be programmed.
|
|
* @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
|
|
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_OB_ProgramData(uint32_t Address, uint8_t Data)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
|
assert_param(IS_OB_DATA_ADDRESS(Address));
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status == FLASH_COMPLETE)
|
|
{
|
|
/* Enables the Option Bytes Programming operation */
|
|
FLASH->CR |= FLASH_CR_OPTPG;
|
|
*(__IO uint16_t *)Address = Data;
|
|
|
|
/* Wait for last operation to be completed */
|
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
|
|
if (status != FLASH_TIMEOUT)
|
|
{
|
|
/* If the program operation is completed, disable the OPTPG Bit */
|
|
FLASH->CR &= ~FLASH_CR_OPTPG;
|
|
}
|
|
}
|
|
/* Return the Option Byte Data Program Status */
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the FLASH User Option Bytes values.
|
|
* @param None
|
|
* @retval The FLASH User Option Bytes .
|
|
*/
|
|
uint8_t FLASH_OB_GetUser(void)
|
|
{
|
|
/* Return the User Option Byte */
|
|
return (uint8_t)(FLASH->OBR >> 8);
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the FLASH Write Protection Option Bytes value.
|
|
* @param None
|
|
* @retval The FLASH Write Protection Option Bytes value
|
|
*/
|
|
uint32_t FLASH_OB_GetWRP(void)
|
|
{
|
|
/* Return the FLASH write protection Register value */
|
|
return (uint32_t)(FLASH->WRPR);
|
|
}
|
|
|
|
/**
|
|
* @brief Checks whether the FLASH Read out Protection Status is set or not.
|
|
* @param None
|
|
* @retval FLASH ReadOut Protection Status(SET or RESET)
|
|
*/
|
|
FlagStatus FLASH_OB_GetRDP(void)
|
|
{
|
|
FlagStatus readstatus = RESET;
|
|
|
|
if ((uint8_t)(FLASH->OBR & (FLASH_OBR_RDPRT1 | FLASH_OBR_RDPRT2)) != RESET)
|
|
{
|
|
readstatus = SET;
|
|
}
|
|
else
|
|
{
|
|
readstatus = RESET;
|
|
}
|
|
return readstatus;
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @defgroup FLASH_Group4 Interrupts and flags management functions
|
|
* @brief Interrupts and flags management functions
|
|
*
|
|
@verbatim
|
|
===============================================================================
|
|
##### Interrupts and flags management functions #####
|
|
===============================================================================
|
|
|
|
@endverbatim
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Enables or disables the specified FLASH interrupts.
|
|
* @param FLASH_IT: specifies the FLASH interrupt sources to be enabled or
|
|
* disabled.
|
|
* This parameter can be any combination of the following values:
|
|
* @arg FLASH_IT_EOP: FLASH end of programming Interrupt
|
|
* @arg FLASH_IT_ERR: FLASH Error Interrupt
|
|
* @retval None
|
|
*/
|
|
void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_IT(FLASH_IT));
|
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
|
|
if (NewState != DISABLE)
|
|
{
|
|
/* Enable the interrupt sources */
|
|
FLASH->CR |= FLASH_IT;
|
|
}
|
|
else
|
|
{
|
|
/* Disable the interrupt sources */
|
|
FLASH->CR &= ~(uint32_t)FLASH_IT;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Checks whether the specified FLASH flag is set or not.
|
|
* @param FLASH_FLAG: specifies the FLASH flag to check.
|
|
* This parameter can be one of the following values:
|
|
* @arg FLASH_FLAG_BSY: FLASH write/erase operations in progress flag
|
|
* @arg FLASH_FLAG_PGERR: FLASH Programming error flag flag
|
|
* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
|
|
* @arg FLASH_FLAG_EOP: FLASH End of Programming flag
|
|
* @retval The new state of FLASH_FLAG (SET or RESET).
|
|
*/
|
|
FlagStatus FLASH_GetFlagStatus(uint32_t FLASH_FLAG)
|
|
{
|
|
FlagStatus bitstatus = RESET;
|
|
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_GET_FLAG(FLASH_FLAG));
|
|
|
|
if ((FLASH->SR & FLASH_FLAG) != (uint32_t)RESET)
|
|
{
|
|
bitstatus = SET;
|
|
}
|
|
else
|
|
{
|
|
bitstatus = RESET;
|
|
}
|
|
/* Return the new state of FLASH_FLAG (SET or RESET) */
|
|
return bitstatus;
|
|
}
|
|
|
|
/**
|
|
* @brief Clears the FLASH's pending flags.
|
|
* @param FLASH_FLAG: specifies the FLASH flags to clear.
|
|
* This parameter can be any combination of the following values:
|
|
* @arg FLASH_FLAG_PGERR: FLASH Programming error flag flag
|
|
* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
|
|
* @arg FLASH_FLAG_EOP: FLASH End of Programming flag
|
|
* @retval None
|
|
*/
|
|
void FLASH_ClearFlag(uint32_t FLASH_FLAG)
|
|
{
|
|
/* Check the parameters */
|
|
assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG));
|
|
// unlock the flash to reset the falsh_cr_lock
|
|
if ((FLASH->CR & FLASH_CR_LOCK) != RESET)
|
|
{
|
|
/* Unlocking the program memory access */
|
|
FLASH->KEYR = FLASH_KEY1;
|
|
FLASH->KEYR = FLASH_KEY2;
|
|
|
|
/* Clear the flags */
|
|
FLASH->SR = FLASH_FLAG;
|
|
// set the FLASH_CR_LOCK bit
|
|
FLASH->CR |= FLASH_CR_LOCK;
|
|
|
|
}
|
|
else
|
|
{
|
|
/* Clear the flags */
|
|
FLASH->SR = FLASH_FLAG;
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the FLASH Status.
|
|
* @param None
|
|
* @retval FLASH Status: The returned value can be:
|
|
* FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP or FLASH_COMPLETE.
|
|
*/
|
|
FLASH_Status FLASH_GetStatus(void)
|
|
{
|
|
FLASH_Status FLASHstatus = FLASH_COMPLETE;
|
|
|
|
if ((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY)
|
|
{
|
|
FLASHstatus = FLASH_BUSY;
|
|
}
|
|
else
|
|
{
|
|
if ((FLASH->SR & (uint32_t)FLASH_FLAG_WRPERR) != (uint32_t)0x00)
|
|
{
|
|
FLASHstatus = FLASH_ERROR_WRP;
|
|
}
|
|
else
|
|
{
|
|
if ((FLASH->SR & (uint32_t)(FLASH_SR_PGERR)) != (uint32_t)0x00)
|
|
{
|
|
FLASHstatus = FLASH_ERROR_PROGRAM;
|
|
}
|
|
else
|
|
{
|
|
FLASHstatus = FLASH_COMPLETE;
|
|
}
|
|
}
|
|
}
|
|
/* Return the FLASH Status */
|
|
return FLASHstatus;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Waits for a FLASH operation to complete or a TIMEOUT to occur.
|
|
* @param Timeout: FLASH programming Timeout
|
|
* @retval FLASH Status: The returned value can be: FLASH_BUSY,
|
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
|
*/
|
|
FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout)
|
|
{
|
|
FLASH_Status status = FLASH_COMPLETE;
|
|
|
|
/* Check for the FLASH Status */
|
|
status = FLASH_GetStatus();
|
|
|
|
/* Wait for a FLASH operation to complete or a TIMEOUT to occur */
|
|
while ((status == FLASH_BUSY) && (Timeout != 0x00))
|
|
{
|
|
status = FLASH_GetStatus();
|
|
Timeout--;
|
|
}
|
|
|
|
if (Timeout == 0x00)
|
|
{
|
|
status = FLASH_TIMEOUT;
|
|
}
|
|
/* Return the operation status */
|
|
return status;
|
|
}
|
|
|