/**
|
******************************************************************************
|
* @file stm32l1xx_flash.c
|
* @author MCD Application Team
|
* @version V1.3.1
|
* @date 20-April-2015
|
* @brief This file provides all the Flash firmware functions. These functions
|
* can be executed from Internal FLASH or Internal SRAM memories.
|
* The functions that should be called from SRAM are defined inside
|
* the "stm32l1xx_flash_ramfunc.c" file.
|
* This file provides firmware functions to manage the following
|
* functionalities of the FLASH peripheral:
|
* + FLASH Interface configuration
|
* + FLASH Memory Programming
|
* + DATA EEPROM Programming
|
* + Option Bytes Programming
|
* + Interrupts and flags management
|
*
|
* @verbatim
|
|
==============================================================================
|
##### How to use this driver #####
|
==============================================================================
|
[..] This driver provides functions to configure and program the Flash
|
memory of all STM32L1xx devices.
|
[..] These functions are split in 5 groups:
|
(#) FLASH Interface configuration functions: this group includes
|
the management of following features:
|
(++) Set the latency.
|
(++) Enable/Disable the prefetch buffer.
|
(++) Enable/Disable the 64 bit Read Access.
|
(++) Enable/Disable the RUN PowerDown mode.
|
(++) Enable/Disable the SLEEP PowerDown mode.
|
|
(#) 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.
|
(++) Program functions: Fast Word and Half Page(should be
|
executed from internal SRAM).
|
|
(#) DATA EEPROM Programming functions: this group includes all
|
needed functions to erase and program the DATA EEPROM memory:
|
(++) Lock and Unlock the DATA EEPROM interface.
|
(++) Erase function: Erase Byte, erase HalfWord, erase Word, erase
|
(++) Double Word (should be executed from internal SRAM).
|
(++) Program functions: Fast Program Byte, Fast Program Half-Word,
|
FastProgramWord, Program Byte, Program Half-Word,
|
Program Word and Program Double-Word (should be executed
|
from internal SRAM).
|
|
(#) FLASH Option Bytes Programming functions: this group includes
|
all needed functions to:
|
(++) Lock and Unlock the Flash Option bytes.
|
(++) Set/Reset the write protection.
|
(++) Set the Read protection Level.
|
(++) Set the BOR level.
|
(++) rogram the user option Bytes.
|
(++) Launch the Option Bytes loader.
|
(++) Get the Write protection.
|
(++) Get the read protection status.
|
(++) Get the BOR level.
|
(++) Get the user option bytes.
|
|
(#) 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
|
*
|
******************************************************************************
|
* @attention
|
*
|
* <h2><center>© COPYRIGHT 2015 STMicroelectronics</center></h2>
|
*
|
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
|
* You may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at:
|
*
|
* http://www.st.com/software_license_agreement_liberty_v2
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*
|
******************************************************************************
|
*/
|
|
/* Includes ------------------------------------------------------------------*/
|
#include "stm32l1xx_flash.h"
|
|
/** @addtogroup STM32L1xx_StdPeriph_Driver
|
* @{
|
*/
|
|
/** @defgroup FLASH
|
* @brief FLASH driver modules
|
* @{
|
*/
|
|
/* Private typedef -----------------------------------------------------------*/
|
/* Private define ------------------------------------------------------------*/
|
|
/* FLASH Mask */
|
#define WRP01_MASK ((uint32_t)0x0000FFFF)
|
#define WRP23_MASK ((uint32_t)0xFFFF0000)
|
#define WRP45_MASK ((uint32_t)0x0000FFFF)
|
#define WRP67_MASK ((uint32_t)0xFFFF0000)
|
#define WRP89_MASK ((uint32_t)0x0000FFFF)
|
#define WRP1011_MASK ((uint32_t)0xFFFF0000)
|
#define WRP1213_MASK ((uint32_t)0x0000FFFF)
|
#define WRP1415_MASK ((uint32_t)0xFFFF0000)
|
|
|
/* 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) and the supply voltage of the device.
|
[..]
|
----------------------------------------------------------------
|
| Wait states | HCLK clock frequency (MHz) |
|
| |------------------------------------------------|
|
| (Latency) | voltage range | voltage range |
|
| | 1.65 V - 3.6 V | 2.0 V - 3.6 V |
|
| |----------------|---------------|---------------|
|
| | VCORE = 1.2 V | VCORE = 1.5 V | VCORE = 1.8 V |
|
|-------------- |----------------|---------------|---------------|
|
|0WS(1CPU cycle)|0 < HCLK <= 2 |0 < HCLK <= 8 |0 < HCLK <= 16 |
|
|---------------|----------------|---------------|---------------|
|
|1WS(2CPU cycle)|2 < HCLK <= 4 |8 < HCLK <= 16 |16 < HCLK <= 32|
|
----------------------------------------------------------------
|
[..]
|
(+) void FLASH_PrefetchBufferCmd(FunctionalState NewState);
|
(+) void FLASH_ReadAccess64Cmd(FunctionalState NewState);
|
(+) void FLASH_RUNPowerDownCmd(FunctionalState NewState);
|
(+) void FLASH_SLEEPPowerDownCmd(FunctionalState NewState);
|
(+) void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState);
|
[..]
|
Here below the allowed configuration of Latency, 64Bit access and prefetch buffer
|
[..]
|
--------------------------------------------------------------------------------
|
| | ACC64 = 0 | ACC64 = 1 |
|
| Latency |----------------|---------------|---------------|---------------|
|
| | PRFTEN = 0 | PRFTEN = 1 | PRFTEN = 0 | PRFTEN = 1 |
|
|---------------|----------------|---------------|---------------|---------------|
|
|0WS(1CPU cycle)| YES | NO | YES | YES |
|
|---------------|----------------|---------------|---------------|---------------|
|
|1WS(2CPU cycle)| NO | NO | YES | YES |
|
--------------------------------------------------------------------------------
|
[..]
|
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_PRFTEN;
|
}
|
else
|
{
|
FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_PRFTEN));
|
}
|
}
|
|
/**
|
* @brief Enables or disables read access to flash by 64 bits.
|
* @param NewState: new state of the FLASH read access mode.
|
* This parameter can be: ENABLE or DISABLE.
|
* @note If this bit is set, the Read access 64 bit is used.
|
* If this bit is reset, the Read access 32 bit is used.
|
* @note This bit cannot be written at the same time as the LATENCY and
|
* PRFTEN bits.
|
* To reset this bit, the LATENCY should be zero wait state and the
|
* prefetch off.
|
* @retval None
|
*/
|
void FLASH_ReadAccess64Cmd(FunctionalState NewState)
|
{
|
/* Check the parameters */
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
if(NewState != DISABLE)
|
{
|
FLASH->ACR |= FLASH_ACR_ACC64;
|
}
|
else
|
{
|
FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_ACC64));
|
}
|
}
|
|
/**
|
* @brief Enable or disable the power down mode during Sleep mode.
|
* @note This function is used to power down the FLASH when the system is in SLEEP LP mode.
|
* @param NewState: new state of the power down mode during sleep mode.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval None
|
*/
|
void FLASH_SLEEPPowerDownCmd(FunctionalState NewState)
|
{
|
/* Check the parameters */
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
if (NewState != DISABLE)
|
{
|
/* Set the SLEEP_PD bit to put Flash in power down mode during sleep mode */
|
FLASH->ACR |= FLASH_ACR_SLEEP_PD;
|
}
|
else
|
{
|
/* Clear the SLEEP_PD bit in to put Flash in idle mode during sleep mode */
|
FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_SLEEP_PD));
|
}
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @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_FastProgramWord(uint32_t Address, uint32_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->PECR & FLASH_PECR_PRGLOCK) != RESET)
|
{
|
/* Unlocking the data memory and FLASH_PECR register access */
|
DATA_EEPROM_Unlock();
|
|
/* Unlocking the program memory access */
|
FLASH->PRGKEYR = FLASH_PRGKEY1;
|
FLASH->PRGKEYR = FLASH_PRGKEY2;
|
}
|
}
|
|
/**
|
* @brief Locks the Program memory access.
|
* @param None
|
* @retval None
|
*/
|
void FLASH_Lock(void)
|
{
|
/* Set the PRGLOCK Bit to lock the program memory access */
|
FLASH->PECR |= FLASH_PECR_PRGLOCK;
|
}
|
|
/**
|
* @brief Erases a specified page in program memory.
|
* @note To correctly run this function, the FLASH_Unlock() function
|
* must be called before.
|
* 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 256 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 */
|
|
/* Set the ERASE bit */
|
FLASH->PECR |= FLASH_PECR_ERASE;
|
|
/* Set PROG bit */
|
FLASH->PECR |= FLASH_PECR_PROG;
|
|
/* Write 00000000h to the first word of the program page to erase */
|
*(__IO uint32_t *)Page_Address = 0x00000000;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* If the erase operation is completed, disable the ERASE and PROG bits */
|
FLASH->PECR &= (uint32_t)(~FLASH_PECR_PROG);
|
FLASH->PECR &= (uint32_t)(~FLASH_PECR_ERASE);
|
}
|
/* Return the Erase Status */
|
return status;
|
}
|
|
/**
|
* @brief Programs a word at a specified address in program memory.
|
* @note To correctly run this function, the FLASH_Unlock() function
|
* must be called before.
|
* 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 written.
|
* @param Data: specifies the data to be written.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_FastProgramWord(uint32_t Address, uint32_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 word */
|
*(__IO uint32_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup FLASH_Group3 DATA EEPROM Programming functions
|
* @brief DATA EEPROM Programming functions
|
*
|
@verbatim
|
===============================================================================
|
##### DATA EEPROM Programming functions #####
|
===============================================================================
|
|
[..] The DATA_EEPROM Programming_Functions, includes the following functions:
|
(+) void DATA_EEPROM_Unlock(void);
|
(+) void DATA_EEPROM_Lock(void);
|
(+) FLASH_Status DATA_EEPROM_EraseByte(uint32_t Address);
|
(+) FLASH_Status DATA_EEPROM_EraseHalfWord(uint32_t Address);
|
(+) FLASH_Status DATA_EEPROM_EraseWord(uint32_t Address);
|
(+) FLASH_Status DATA_EEPROM_FastProgramByte(uint32_t Address, uint8_t Data);
|
(+) FLASH_Status DATA_EEPROM_FastProgramHalfWord(uint32_t Address, uint16_t Data);
|
(+) FLASH_Status DATA_EEPROM_FastProgramWord(uint32_t Address, uint32_t Data);
|
(+) FLASH_Status DATA_EEPROM_ProgramByte(uint32_t Address, uint8_t Data);
|
(+) FLASH_Status DATA_EEPROM_ProgramHalfWord(uint32_t Address, uint16_t Data);
|
(+) FLASH_Status DATA_EEPROM_ProgramWord(uint32_t Address, uint32_t Data);
|
|
[..] Any operation of erase or program should follow these steps:
|
(#) Call the DATA_EEPROM_Unlock() function to enable the data EEPROM access
|
and Flash program erase control register access.
|
(#) Call the desired function to erase or program data.
|
(#) Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
and Flash program erase control register access(recommended
|
to protect the DATA_EEPROM against possible unwanted operation).
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Unlocks the data memory and FLASH_PECR register access.
|
* @param None
|
* @retval None
|
*/
|
void DATA_EEPROM_Unlock(void)
|
{
|
if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
|
{
|
/* Unlocking the Data memory and FLASH_PECR register access*/
|
FLASH->PEKEYR = FLASH_PEKEY1;
|
FLASH->PEKEYR = FLASH_PEKEY2;
|
}
|
}
|
|
/**
|
* @brief Locks the Data memory and FLASH_PECR register access.
|
* @param None
|
* @retval None
|
*/
|
void DATA_EEPROM_Lock(void)
|
{
|
/* Set the PELOCK Bit to lock the data memory and FLASH_PECR register access */
|
FLASH->PECR |= FLASH_PECR_PELOCK;
|
}
|
|
/**
|
* @brief Enables or disables DATA EEPROM fixed Time programming (2*Tprog).
|
* @param NewState: new state of the DATA EEPROM fixed Time programming mode.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval None
|
*/
|
void DATA_EEPROM_FixedTimeProgramCmd(FunctionalState NewState)
|
{
|
/* Check the parameters */
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
if(NewState != DISABLE)
|
{
|
FLASH->PECR |= (uint32_t)FLASH_PECR_FTDW;
|
}
|
else
|
{
|
FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW));
|
}
|
}
|
|
/**
|
* @brief Erase a byte in data memory.
|
* @param Address: specifies the address to be erased.
|
* @note This function can be used only for STM32L1XX_HD, STM32L1XX_MDP and
|
* STM32L1XX_XL devices.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_EraseByte(uint32_t Address)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write "00h" to valid address in the data memory" */
|
*(__IO uint8_t *) Address = (uint8_t)0x00;
|
}
|
|
/* Return the erase status */
|
return status;
|
}
|
|
/**
|
* @brief Erase a halfword in data memory.
|
* @param Address: specifies the address to be erased.
|
* @note This function can be used only for STM32L1XX_HD, STM32L1XX_MDP and
|
* STM32L1XX_XL devices.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_EraseHalfWord(uint32_t Address)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write "0000h" to valid address in the data memory" */
|
*(__IO uint16_t *) Address = (uint16_t)0x0000;
|
}
|
|
/* Return the erase status */
|
return status;
|
}
|
|
/**
|
* @brief Erase a word in data memory.
|
* @param Address: specifies the address to be erased.
|
* @note For STM32L1XX_MD, A data memory word is erased in the data memory only
|
* if the address to load is the start address of a word (multiple of a word).
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_EraseWord(uint32_t Address)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write "00000000h" to valid address in the data memory" */
|
*(__IO uint32_t *) Address = 0x00000000;
|
}
|
|
/* Return the erase status */
|
return status;
|
}
|
|
/**
|
* @brief Write a Byte at a specified address in data memory.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @note This function assumes that the is data word is already erased.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_FastProgramByte(uint32_t Address, uint8_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
uint32_t tmp = 0, tmpaddr = 0;
|
#endif
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Clear the FTDW bit */
|
FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW));
|
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
if(Data != (uint8_t)0x00)
|
{
|
/* If the previous operation is completed, proceed to write the new Data */
|
*(__IO uint8_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
else
|
{
|
tmpaddr = Address & 0xFFFFFFFC;
|
tmp = * (__IO uint32_t *) tmpaddr;
|
tmpaddr = 0xFF << ((uint32_t) (0x8 * (Address & 0x3)));
|
tmp &= ~tmpaddr;
|
status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC);
|
status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp);
|
}
|
#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) || defined (STM32L1XX_XL)
|
/* If the previous operation is completed, proceed to write the new Data */
|
*(__IO uint8_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
#endif
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @brief Writes a half word at a specified address in data memory.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @note This function assumes that the is data word is already erased.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_FastProgramHalfWord(uint32_t Address, uint16_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
uint32_t tmp = 0, tmpaddr = 0;
|
#endif
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Clear the FTDW bit */
|
FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW));
|
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
if(Data != (uint16_t)0x0000)
|
{
|
/* If the previous operation is completed, proceed to write the new data */
|
*(__IO uint16_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
else
|
{
|
if((Address & 0x3) != 0x3)
|
{
|
tmpaddr = Address & 0xFFFFFFFC;
|
tmp = * (__IO uint32_t *) tmpaddr;
|
tmpaddr = 0xFFFF << ((uint32_t) (0x8 * (Address & 0x3)));
|
tmp &= ~tmpaddr;
|
status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC);
|
status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp);
|
}
|
else
|
{
|
DATA_EEPROM_FastProgramByte(Address, 0x00);
|
DATA_EEPROM_FastProgramByte(Address + 1, 0x00);
|
}
|
}
|
#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) || defined (STM32L1XX_XL)
|
/* If the previous operation is completed, proceed to write the new data */
|
*(__IO uint16_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
#endif
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @brief Programs a word at a specified address in data memory.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @note This function assumes that the is data word is already erased.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_FastProgramWord(uint32_t Address, uint32_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Clear the FTDW bit */
|
FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW));
|
|
/* If the previous operation is completed, proceed to program the new data */
|
*(__IO uint32_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @brief Write a Byte at a specified address in data memory without erase.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before
|
* this function to configure the Fixed Time Programming.
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_ProgramByte(uint32_t Address, uint8_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
uint32_t tmp = 0, tmpaddr = 0;
|
#endif
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
if(Data != (uint8_t) 0x00)
|
{
|
*(__IO uint8_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
}
|
else
|
{
|
tmpaddr = Address & 0xFFFFFFFC;
|
tmp = * (__IO uint32_t *) tmpaddr;
|
tmpaddr = 0xFF << ((uint32_t) (0x8 * (Address & 0x3)));
|
tmp &= ~tmpaddr;
|
status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC);
|
status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp);
|
}
|
#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) || defined (STM32L1XX_XL)
|
*(__IO uint8_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
#endif
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @brief Writes a half word at a specified address in data memory without erase.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before
|
* this function to configure the Fixed Time Programming
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_ProgramHalfWord(uint32_t Address, uint16_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
uint32_t tmp = 0, tmpaddr = 0;
|
#endif
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) && !defined (STM32L1XX_XL)
|
if(Data != (uint16_t)0x0000)
|
{
|
*(__IO uint16_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
else
|
{
|
if((Address & 0x3) != 0x3)
|
{
|
tmpaddr = Address & 0xFFFFFFFC;
|
tmp = * (__IO uint32_t *) tmpaddr;
|
tmpaddr = 0xFFFF << ((uint32_t) (0x8 * (Address & 0x3)));
|
tmp &= ~tmpaddr;
|
status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC);
|
status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp);
|
}
|
else
|
{
|
DATA_EEPROM_FastProgramByte(Address, 0x00);
|
DATA_EEPROM_FastProgramByte(Address + 1, 0x00);
|
}
|
}
|
#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) || defined (STM32L1XX_XL)
|
*(__IO uint16_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
#endif
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @brief Programs a word at a specified address in data memory without erase.
|
* @note To correctly run this function, the DATA_EEPROM_Unlock() function
|
* must be called before.
|
* Call the DATA_EEPROM_Lock() to disable the data EEPROM access
|
* and Flash program erase control register access(recommended to protect
|
* the DATA_EEPROM against possible unwanted operation).
|
* @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before
|
* this function to configure the Fixed Time Programming.
|
* @param Address: specifies the address to be written.
|
* @param Data: specifies the data to be written.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status DATA_EEPROM_ProgramWord(uint32_t Address, uint32_t Data)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
|
/* Check the parameters */
|
assert_param(IS_FLASH_DATA_ADDRESS(Address));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
*(__IO uint32_t *)Address = Data;
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
/* Return the Write Status */
|
return status;
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup FLASH_Group4 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_WRPConfig(uint32_t OB_WRP, FunctionalState NewState);
|
(+) FLASH_Status FLASH_OB_WRP1Config(uint32_t OB_WRP1, FunctionalState NewState);
|
(+) FLASH_Status FLASH_OB_WRP2Config(uint32_t OB_WRP2, FunctionalState NewState);
|
(+) FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP);
|
(+) FLASH_Status FLASH_OB_PCROPConfig(uint32_t OB_WRP, FunctionalState NewState);
|
(+) FLASH_Status FLASH_OB_PCROP1Config(uint32_t OB_WRP1, FunctionalState NewState);
|
(+) FLASH_Status FLASH_OB_PCROPSelectionConfig(uint16_t OB_PcROP);
|
(+) FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY);
|
(+) FLASH_Status FLASH_OB_BORConfig(uint8_t OB_BOR);
|
(+) uint8_t FLASH_OB_GetUser(void);
|
(+) uint32_t FLASH_OB_GetWRP(void);
|
(+) uint32_t FLASH_OB_GetWRP1(void);
|
(+) uint32_t FLASH_OB_GetWRP2(void);
|
(+) FlagStatus FLASH_OB_GetRDP(void);
|
(+) FlagStatus FLASH_OB_GetSPRMOD(void);
|
(+) uint8_t FLASH_OB_GetBOR(void);
|
(+) FLASH_Status FLASH_OB_BootConfig(uint16_t OB_BOOT);
|
|
[..] Any operation of erase or program should follow these steps:
|
(#) Call the FLASH_OB_Unlock() function to enable the Flash option control
|
register access.
|
(#) Call one or several functions to program the desired option bytes.
|
(++) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState) => to Enable/Disable
|
the desired sector write protection.
|
(++) void FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the desired read Protection Level.
|
(++) void 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.
|
(++) void FLASH_OB_BORConfig(uint8_t OB_BOR) => to Set the BOR level.
|
(#) 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 Flash option control register access (recommended
|
to protect the option Bytes against possible unwanted operations).
|
|
[..] Proprietary code Read Out Protection (PcROP):
|
(#) The PcROP sector is selected by using the same option bytes as the Write
|
protection (nWRPi bits). As a result, these 2 options are exclusive each other.
|
(#) In order to activate the PcROP (change the function of the nWRPi option bits),
|
the SPRMOD option bit must be activated.
|
(#) The active value of nWRPi bits is inverted when PCROP mode is active, this
|
means: if SPRMOD = 1 and nWRPi = 1 (default value), then the user sector "i"
|
is read/write protected.
|
(#) To activate PCROP mode for Flash sector(s), you need to follow the sequence below:
|
(++) For sector(s) within the first 128KB of the Flash, use this function
|
FLASH_OB_PCROPConfig(OB_WRP_Pagesxxx, ENABLE)
|
(++) For sector(s) within the second 128KB of the Flash, use this function
|
FLASH_OB_PCROP1Config(OB_WRP_Pagesxxx, ENABLE)
|
(++) Activate the PCROP mode using FLASH_OB_PCROPSelectionConfig(OB_PcROP_Enable) function
|
(#) PcROP is available only in STM32L1XX_MDP devices
|
|
@endverbatim
|
* @{
|
*/
|
|
/**
|
* @brief Unlocks the option bytes block access.
|
* @param None
|
* @retval None
|
*/
|
void FLASH_OB_Unlock(void)
|
{
|
if((FLASH->PECR & FLASH_PECR_OPTLOCK) != RESET)
|
{
|
/* Unlocking the data memory and FLASH_PECR register access */
|
DATA_EEPROM_Unlock();
|
|
/* 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 OPTLOCK Bit to lock the option bytes block access */
|
FLASH->PECR |= FLASH_PECR_OPTLOCK;
|
}
|
|
/**
|
* @brief Launch the option byte loading.
|
* @param None
|
* @retval None
|
*/
|
void FLASH_OB_Launch(void)
|
{
|
/* Set the OBL_Launch bit to lauch the option byte loading */
|
FLASH->PECR |= FLASH_PECR_OBL_LAUNCH;
|
}
|
|
/**
|
* @brief Write protects the desired pages of the first 128KB of the Flash.
|
* @param OB_WRP: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP_Pages0to15 and OB_WRP_Pages496to511
|
* @arg OB_WRP_AllPages
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR correspond to WRPR1
|
* @param NewState: new state of the specified FLASH Pages Wtite protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
|
{
|
uint32_t WRP01_Data = 0, WRP23_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP01_Data = (uint16_t)(((OB_WRP & WRP01_MASK) | OB->WRP01));
|
WRP23_Data = (uint16_t)((((OB_WRP & WRP23_MASK)>>16 | OB->WRP23)));
|
tmp1 = (uint32_t)(~(WRP01_Data) << 16)|(WRP01_Data);
|
OB->WRP01 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP23_Data) << 16)|(WRP23_Data);
|
OB->WRP23 = tmp2;
|
}
|
|
else
|
{
|
WRP01_Data = (uint16_t)(~OB_WRP & (WRP01_MASK & OB->WRP01));
|
WRP23_Data = (uint16_t)((((~OB_WRP & WRP23_MASK)>>16 & OB->WRP23)));
|
|
tmp1 = (uint32_t)((~WRP01_Data) << 16)|(WRP01_Data);
|
OB->WRP01 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP23_Data) << 16)|(WRP23_Data);
|
OB->WRP23 = tmp2;
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* Return the write protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Write protects the desired pages of the second 128KB of the Flash.
|
* @note This function can be used only for STM32L1XX_HD, STM32L1XX_MDP and
|
* STM32L1XX_XL devices.
|
* @param OB_WRP1: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP_Pages512to527 and OB_WRP_Pages1008to1023
|
* @arg OB_WRP1_AllPages
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR1 correspond to WRPR2
|
* @param NewState: new state of the specified FLASH Pages Wtite protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_WRP1Config(uint32_t OB_WRP1, FunctionalState NewState)
|
{
|
uint32_t WRP45_Data = 0, WRP67_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP1));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP45_Data = (uint16_t)(((OB_WRP1 & WRP45_MASK) | OB->WRP45));
|
WRP67_Data = (uint16_t)((((OB_WRP1 & WRP67_MASK)>>16 | OB->WRP67)));
|
tmp1 = (uint32_t)(~(WRP45_Data) << 16)|(WRP45_Data);
|
OB->WRP45 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP67_Data) << 16)|(WRP67_Data);
|
OB->WRP67 = tmp2;
|
}
|
|
else
|
{
|
WRP45_Data = (uint16_t)(~OB_WRP1 & (WRP45_MASK & OB->WRP45));
|
WRP67_Data = (uint16_t)((((~OB_WRP1 & WRP67_MASK)>>16 & OB->WRP67)));
|
|
tmp1 = (uint32_t)((~WRP45_Data) << 16)|(WRP45_Data);
|
OB->WRP45 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP67_Data) << 16)|(WRP67_Data);
|
OB->WRP67 = tmp2;
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* Return the write protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Write protects the desired pages of the third 128KB of the Flash.
|
* @note This function can be used only for STM32L1XX_HD and STM32L1XX_XL devices.
|
* @param OB_WRP2: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP_Pages1024to1039 and OB_WRP_Pages1520to1535
|
* @arg OB_WRP2_AllPages
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR2 correspond to WRPR3
|
* @param NewState: new state of the specified FLASH Pages Wtite protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_WRP2Config(uint32_t OB_WRP2, FunctionalState NewState)
|
{
|
uint32_t WRP89_Data = 0, WRP1011_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP2));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP89_Data = (uint16_t)(((OB_WRP2 & WRP89_MASK) | OB->WRP89));
|
WRP1011_Data = (uint16_t)((((OB_WRP2 & WRP1011_MASK)>>16 | OB->WRP1011)));
|
tmp1 = (uint32_t)(~(WRP89_Data) << 16)|(WRP89_Data);
|
OB->WRP89 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP1011_Data) << 16)|(WRP1011_Data);
|
OB->WRP1011 = tmp2;
|
}
|
|
else
|
{
|
WRP89_Data = (uint16_t)(~OB_WRP2 & (WRP89_MASK & OB->WRP89));
|
WRP1011_Data = (uint16_t)((((~OB_WRP2 & WRP1011_MASK)>>16 & OB->WRP1011)));
|
|
tmp1 = (uint32_t)((~WRP89_Data) << 16)|(WRP89_Data);
|
OB->WRP89 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP1011_Data) << 16)|(WRP1011_Data);
|
OB->WRP1011 = tmp2;
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* Return the write protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Write protects the desired pages of the fourth 128KB of the Flash.
|
* @note This function can be used only for STM32L1XX_XL devices.
|
* @param OB_WRP3: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP3_Pages1536to1551 and OB_WRP3_Pages2032to2047
|
* @arg OB_WRP3_AllPages
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR3 correspond to WRPR4
|
* @param NewState: new state of the specified FLASH Pages Wtite protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_WRP3Config(uint32_t OB_WRP3, FunctionalState NewState)
|
{
|
uint32_t WRP1213_Data = 0, WRP1415_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP3));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP1213_Data = (uint16_t)(((OB_WRP3 & WRP1213_MASK) | OB->WRP1213));
|
WRP1415_Data = (uint16_t)((((OB_WRP3 & WRP1415_MASK)>>16 | OB->WRP1415)));
|
tmp1 = (uint32_t)(~(WRP1213_Data) << 16)|(WRP1213_Data);
|
OB->WRP1213 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP1415_Data) << 16)|(WRP1415_Data);
|
OB->WRP1415 = tmp2;
|
}
|
|
else
|
{
|
WRP1213_Data = (uint16_t)(~OB_WRP3 & (WRP1213_MASK & OB->WRP1213));
|
WRP1415_Data = (uint16_t)((((~OB_WRP3 & WRP1415_MASK)>>16 & OB->WRP1415)));
|
|
tmp1 = (uint32_t)((~WRP1213_Data) << 16)|(WRP1213_Data);
|
OB->WRP1213 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP1415_Data) << 16)|(WRP1415_Data);
|
OB->WRP1415 = tmp2;
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* 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.
|
* @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
|
*
|
* !!!Warning!!! 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;
|
uint16_t tmp1 = 0;
|
uint32_t tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_RDP(OB_RDP));
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* calculate the option byte to write */
|
tmp1 = ((uint16_t)(*(__IO uint16_t *)(OB_BASE)) & 0xFF00) | OB_RDP;
|
tmp2 = (uint32_t)(((uint32_t)((uint32_t)(~tmp1) << 16)) | ((uint32_t)tmp1));
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* program read protection level */
|
OB->RDP = tmp2;
|
}
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Return the Read protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Enables or disables the read/write protection (PCROP) of the desired
|
* sectors, for the first 128KB of the Flash.
|
* @note This function can be used only for STM32L1XX_MDP devices
|
* @param OB_WRP: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP_Pages0to15 and OB_WRP_Pages496to511
|
* @arg OB_WRP_AllPages
|
* @param NewState: new state of the specified FLASH Pages Write protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_PCROPConfig(uint32_t OB_WRP, FunctionalState NewState)
|
{
|
uint32_t WRP01_Data = 0, WRP23_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP01_Data = (uint16_t)(~OB_WRP & (WRP01_MASK & OB->WRP01));
|
WRP23_Data = (uint16_t)((((~OB_WRP & WRP23_MASK)>>16 & OB->WRP23)));
|
|
tmp1 = (uint32_t)((~WRP01_Data) << 16)|(WRP01_Data);
|
OB->WRP01 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP23_Data) << 16)|(WRP23_Data);
|
OB->WRP23 = tmp2;
|
|
}
|
|
else
|
{
|
WRP01_Data = (uint16_t)((OB_WRP & WRP01_MASK) | OB->WRP01);
|
WRP23_Data = (uint16_t)(((OB_WRP & WRP23_MASK) >> 16) | OB->WRP23);
|
|
tmp1 = (uint32_t)(~(WRP01_Data) << 16)|(WRP01_Data);
|
OB->WRP01 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP23_Data) << 16)|(WRP23_Data);
|
OB->WRP23 = tmp2;
|
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* Return the write protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Enables or disables the read/write protection (PCROP) of the desired
|
* sectors, for the second 128KB of the Flash.
|
* @note This function can be used only for STM32L1XX_MDP devices
|
* @param OB_WRP1: specifies the address of the pages to be write protected.
|
* This parameter can be:
|
* @arg value between OB_WRP_Pages512to527 and OB_WRP_Pages1008to1023
|
* @arg OB_WRP_AllPages
|
* @param NewState: new state of the specified FLASH Pages Write protection.
|
* This parameter can be: ENABLE or DISABLE.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_PCROP1Config(uint32_t OB_WRP1, FunctionalState NewState)
|
{
|
uint32_t WRP45_Data = 0, WRP67_Data = 0;
|
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp1 = 0, tmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_WRP(OB_WRP1));
|
assert_param(IS_FUNCTIONAL_STATE(NewState));
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
if (NewState != DISABLE)
|
{
|
WRP45_Data = (uint16_t)(~OB_WRP1 & (WRP45_MASK & OB->WRP45));
|
WRP67_Data = (uint16_t)((((~OB_WRP1 & WRP67_MASK)>>16 & OB->WRP67)));
|
|
tmp1 = (uint32_t)((~WRP45_Data) << 16)|(WRP45_Data);
|
OB->WRP45 = tmp1;
|
|
tmp2 = (uint32_t)((~WRP67_Data) << 16)|(WRP67_Data);
|
OB->WRP67 = tmp2;
|
}
|
else
|
{
|
WRP45_Data = (uint16_t)((OB_WRP1 & WRP45_MASK) | OB->WRP45);
|
WRP67_Data = (uint16_t)(((OB_WRP1 & WRP67_MASK)>>16) | OB->WRP67);
|
tmp1 = (uint32_t)(~(WRP45_Data) << 16)|(WRP45_Data);
|
OB->WRP45 = tmp1;
|
|
tmp2 = (uint32_t)(~(WRP67_Data) << 16)|(WRP67_Data);
|
OB->WRP67 = tmp2;
|
}
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
}
|
|
/* Return the write protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Select the Protection Mode (SPRMOD).
|
* @note This function can be used only for STM32L1XX_MDP devices
|
* @note Once SPRMOD bit is active, unprotection of a protected sector is not possible
|
* @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
|
* @param OB_PcROP: Select the Protection Mode of nWPRi bits.
|
* This parameter can be:
|
* @arg OB_PcROP_Enable: nWRPi control the read&write protection (PcROP) of respective user sectors.
|
* @arg OB_PcROP_Disable: nWRPi control the write protection of respective user sectors.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_PCROPSelectionConfig(uint16_t OB_PcROP)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
uint16_t tmp1 = 0;
|
uint32_t tmp2 = 0;
|
uint8_t optiontmp = 0;
|
uint16_t optiontmp2 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_PCROP_SELECT(OB_PcROP));
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Mask RDP Byte */
|
optiontmp = (uint8_t)(*(__IO uint8_t *)(OB_BASE));
|
|
/* Update Option Byte */
|
optiontmp2 = (uint16_t)(OB_PcROP | optiontmp);
|
|
|
/* calculate the option byte to write */
|
tmp1 = (uint16_t)(~(optiontmp2 ));
|
tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16)) | ((uint32_t)optiontmp2));
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* program PCRop */
|
OB->RDP = tmp2;
|
}
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Return the Read protection operation Status */
|
return status;
|
}
|
|
/**
|
* @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
|
* @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;
|
uint32_t tmp = 0, tmp1 = 0;
|
|
/* 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));
|
|
/* Get the User Option byte register */
|
tmp1 = (FLASH->OBR & 0x000F0000) >> 16;
|
|
/* Calculate the user option byte to write */
|
tmp = (uint32_t)(((uint32_t)~((uint32_t)((uint32_t)(OB_IWDG) | (uint32_t)(OB_STOP) | (uint32_t)(OB_STDBY) | tmp1))) << ((uint32_t)0x10));
|
tmp |= ((uint32_t)(OB_IWDG) | ((uint32_t)OB_STOP) | (uint32_t)(OB_STDBY) | tmp1);
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write the User Option Byte */
|
OB->USER = tmp;
|
}
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Return the Option Byte program Status */
|
return status;
|
}
|
|
/**
|
* @brief Programs the FLASH brownout reset threshold level Option Byte.
|
* @param OB_BOR: Selects the brownout reset threshold level.
|
* This parameter can be one of the following values:
|
* @arg OB_BOR_OFF: BOR is disabled at power down, the reset is asserted when the VDD
|
* power supply reaches the PDR(Power Down Reset) threshold (1.5V)
|
* @arg OB_BOR_LEVEL1: BOR Reset threshold levels for 1.7V - 1.8V VDD power supply
|
* @arg OB_BOR_LEVEL2: BOR Reset threshold levels for 1.9V - 2.0V VDD power supply
|
* @arg OB_BOR_LEVEL3: BOR Reset threshold levels for 2.3V - 2.4V VDD power supply
|
* @arg OB_BOR_LEVEL4: BOR Reset threshold levels for 2.55V - 2.65V VDD power supply
|
* @arg OB_BOR_LEVEL5: BOR Reset threshold levels for 2.8V - 2.9V VDD power supply
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_BORConfig(uint8_t OB_BOR)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp = 0, tmp1 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_BOR_LEVEL(OB_BOR));
|
|
/* Get the User Option byte register */
|
tmp1 = (FLASH->OBR & 0x00F00000) >> 16;
|
|
/* Calculate the option byte to write */
|
tmp = (uint32_t)~(OB_BOR | tmp1)<<16;
|
tmp |= (OB_BOR | tmp1);
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write the BOR Option Byte */
|
OB->USER = tmp;
|
}
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Return the Option Byte program Status */
|
return status;
|
}
|
|
/**
|
* @brief Configures to boot from Bank1 or Bank2.
|
* @note This function can be used only for STM32L1XX_HD and STM32L1XX_XL devices.
|
* @param OB_BOOT: select the FLASH Bank to boot from.
|
* This parameter can be one of the following values:
|
* @arg OB_BOOT_BANK2: At startup, if boot pins are set in boot from user Flash
|
* position and this parameter is selected the device will boot from Bank2 or Bank1,
|
* depending on the activation of the bank. The active banks are checked in
|
* the following order: Bank2, followed by Bank1.
|
* The active bank is recognized by the value programmed at the base address
|
* of the respective bank (corresponding to the initial stack pointer value
|
* in the interrupt vector table).
|
* @arg OB_BOOT_BANK1: At startup, if boot pins are set in boot from user Flash
|
* position and this parameter is selected the device will boot from Bank1(Default).
|
* For more information, please refer to AN2606 from www.st.com.
|
* @retval FLASH Status: The returned value can be:
|
* FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
|
*/
|
FLASH_Status FLASH_OB_BootConfig(uint8_t OB_BOOT)
|
{
|
FLASH_Status status = FLASH_COMPLETE;
|
uint32_t tmp = 0, tmp1 = 0;
|
|
/* Check the parameters */
|
assert_param(IS_OB_BOOT_BANK(OB_BOOT));
|
|
/* Get the User Option byte register */
|
tmp1 = (FLASH->OBR & 0x007F0000) >> 16;
|
|
/* Calculate the option byte to write */
|
tmp = (uint32_t)~(OB_BOOT | tmp1)<<16;
|
tmp |= (OB_BOOT | tmp1);
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
if(status == FLASH_COMPLETE)
|
{
|
/* Write the BOOT Option Byte */
|
OB->USER = tmp;
|
}
|
|
/* Wait for last operation to be completed */
|
status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
|
|
/* Return the Option Byte 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 >> 20);
|
}
|
|
/**
|
* @brief Returns the FLASH Write Protection Option Bytes value.
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR correspond to WRPR1
|
* @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 Returns the FLASH Write Protection Option Bytes value.
|
* @note This function can be used only for STM32L1XX_HD, STM32L1XX_MDP and
|
* STM32L1XX_XL devices.
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR1 correspond to WRPR2
|
* @param None
|
* @retval The FLASH Write Protection Option Bytes value.
|
*/
|
uint32_t FLASH_OB_GetWRP1(void)
|
{
|
/* Return the FLASH write protection Register value */
|
return (uint32_t)(FLASH->WRPR1);
|
}
|
|
/**
|
* @brief Returns the FLASH Write Protection Option Bytes value.
|
* @note This function can be used only for STM32L1XX_HD and STM32L1XX_XL devices.
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR2 correspond to WRPR3
|
* @param None
|
* @retval The FLASH Write Protection Option Bytes value.
|
*/
|
uint32_t FLASH_OB_GetWRP2(void)
|
{
|
/* Return the FLASH write protection Register value */
|
return (uint32_t)(FLASH->WRPR2);
|
}
|
|
/**
|
* @brief Returns the FLASH Write Protection Option Bytes value.
|
* @note This function can be used only for STM32L1XX_XL devices.
|
* @note In the StdLib, the naming of WRP registers is shifted vs. the Reference Manual:
|
* - WRPR3 correspond to WRPR4
|
* @param None
|
* @retval The FLASH Write Protection Option Bytes value.
|
*/
|
uint32_t FLASH_OB_GetWRP3(void)
|
{
|
/* Return the FLASH write protection Register value */
|
return (uint32_t)(FLASH->WRPR3);
|
}
|
|
/**
|
* @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) != (uint8_t)OB_RDP_Level_0)
|
{
|
readstatus = SET;
|
}
|
else
|
{
|
readstatus = RESET;
|
}
|
return readstatus;
|
}
|
|
/**
|
* @brief Returns the SPRMOD Status.
|
* @note This function can be used only for STM32L1XX_MDP devices
|
* @param None
|
* @retval The SPRMOD Status.
|
*/
|
FlagStatus FLASH_OB_GetSPRMOD(void)
|
{
|
FlagStatus readstatus = RESET;
|
uint16_t tmp = 0;
|
|
/* Return the SPRMOD value */
|
tmp = (uint16_t)(FLASH->OBR & (uint16_t)(0x0100));
|
|
if (tmp != (uint16_t)0x0000)
|
{
|
readstatus = SET;
|
}
|
else
|
{
|
readstatus = RESET;
|
}
|
return readstatus;
|
}
|
|
/**
|
* @brief Returns the FLASH BOR level.
|
* @param None
|
* @retval The FLASH User Option Bytes.
|
*/
|
uint8_t FLASH_OB_GetBOR(void)
|
{
|
/* Return the BOR level */
|
return (uint8_t)((FLASH->OBR & (uint32_t)0x000F0000) >> 16);
|
}
|
|
/**
|
* @}
|
*/
|
|
/** @defgroup FLASH_Group5 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->PECR |= FLASH_IT;
|
}
|
else
|
{
|
/* Disable the interrupt sources */
|
FLASH->PECR &= ~(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_EOP: FLASH End of Operation flag
|
* @arg FLASH_FLAG_READY: FLASH Ready flag after low power mode
|
* @arg FLASH_FLAG_ENDHV: FLASH End of high voltage flag
|
* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
|
* @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
|
* @arg FLASH_FLAG_SIZERR: FLASH size error flag
|
* @arg FLASH_FLAG_OPTVERR: FLASH Option validity error flag
|
* @arg FLASH_FLAG_OPTVERRUSR: FLASH Option User validity error flag
|
* @arg FLASH_FLAG_RDERR: FLASH Read protected error flag (available only in STM32L1XX_MDP devices)
|
* @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_EOP: FLASH End of Operation flag
|
* @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
|
* @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
|
* @arg FLASH_FLAG_SIZERR: FLASH size error flag
|
* @arg FLASH_FLAG_OPTVERR: FLASH Option validity error flag
|
* @arg FLASH_FLAG_OPTVERRUSR: FLASH Option User validity error flag
|
* @arg FLASH_FLAG_RDERR: FLASH Read protected error flag (available only in STM32L1XX_MDP devices)
|
* @retval None
|
*/
|
void FLASH_ClearFlag(uint32_t FLASH_FLAG)
|
{
|
/* Check the parameters */
|
assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG));
|
|
/* 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)0x1E00) != (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)
|
{
|
__IO 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;
|
}
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
