lib/main/STM32F7/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_flash.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f7xx_hal_flash.c
   4   * @author  MCD Application Team
   5   * @brief   FLASH HAL module driver.
   6   *          This file provides firmware functions to manage the following
   7   *          functionalities of the internal FLASH memory:
   8   *           + Program operations functions
   9   *           + Memory Control functions
  10   *           + Peripheral Errors functions
  11   *
  12   @verbatim
  13   ==============================================================================
  14                         ##### FLASH peripheral features #####
  15   ==============================================================================
  16
  17   [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
  18        to the Flash memory. It implements the erase and program Flash memory operations
  19        and the read and write protection mechanisms.
  20
  21   [..] The Flash memory interface accelerates code execution with a system of instruction
  22        prefetch and cache lines.
  23
  24   [..] The FLASH main features are:
  25       (+) Flash memory read operations
  26       (+) Flash memory program/erase operations
  27       (+) Read / write protections
  28       (+) Prefetch on I-Code
  29       (+) 64 cache lines of 128 bits on I-Code
  30       (+) 8 cache lines of 128 bits on D-Code
  31
  32                      ##### How to use this driver #####
  33   ==============================================================================
  34     [..]
  35       This driver provides functions and macros to configure and program the FLASH
  36       memory of all STM32F7xx devices.
  37
  38       (#) FLASH Memory IO Programming functions:
  39            (++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and
  40                 HAL_FLASH_Lock() functions
  41            (++) Program functions: byte, half word, word and double word
  42            (++) There Two modes of programming :
  43             (+++) Polling mode using HAL_FLASH_Program() function
  44             (+++) Interrupt mode using HAL_FLASH_Program_IT() function
  45
  46       (#) Interrupts and flags management functions :
  47            (++) Handle FLASH interrupts by calling HAL_FLASH_IRQHandler()
  48            (++) Wait for last FLASH operation according to its status
  49            (++) Get error flag status by calling HAL_SetErrorCode()
  50     [..]
  51       In addition to these functions, this driver includes a set of macros allowing
  52       to handle the following operations:
  53        (+) Set the latency
  54        (+) Enable/Disable the prefetch buffer
  55        (+) Enable/Disable the Instruction cache and the Data cache
  56        (+) Reset the Instruction cache and the Data cache
  57        (+) Enable/Disable the FLASH interrupts
  58        (+) Monitor the FLASH flags status
  59     [..]
  60         (@) For any Flash memory program operation (erase or program), the CPU clock frequency
  61         (HCLK) must be at least 1MHz.
  62         (@) The contents of the Flash memory are not guaranteed if a device reset occurs during
  63             a Flash memory operation.
  64     (@) Any attempt to read the Flash memory while it is being written or erased, causes the
  65             bus to stall. Read operations are processed correctly once the program operation has
  66                 completed. This means that code or data fetches cannot be performed while a write/erase
  67                 operation is ongoing.
  68
  69   @endverbatim
  70   ******************************************************************************
  71   * @attention
  72   *
  73   * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
  74   * All rights reserved.</center></h2>
  75   *
  76   * This software component is licensed by ST under BSD 3-Clause license,
  77   * the "License"; You may not use this file except in compliance with the
  78   * License. You may obtain a copy of the License at:
  79   *                        opensource.org/licenses/BSD-3-Clause
  80   *
  81   ******************************************************************************
  82   */
  83
  84 /* Includes ------------------------------------------------------------------*/
  85 #include "stm32f7xx_hal.h"
  86
  87 /** @addtogroup STM32F7xx_HAL_Driver
  88   * @{
  89   */
  90
  91 /** @defgroup FLASH FLASH
  92   * @brief FLASH HAL module driver
  93   * @{
  94   */
  95
  96 #ifdef HAL_FLASH_MODULE_ENABLED
  97
  98 /* Private typedef -----------------------------------------------------------*/
  99 /* Private define ------------------------------------------------------------*/
 100 /** @addtogroup FLASH_Private_Constants
 101   * @{
 102   */
 103 #define SECTOR_MASK               ((uint32_t)0xFFFFFF07U)
 104 #define FLASH_TIMEOUT_VALUE       ((uint32_t)50000U)/* 50 s */
 105 /**
 106   * @}
 107   */
 108 /* Private macro -------------------------------------------------------------*/
 109 /* Private variables ---------------------------------------------------------*/
 110 /** @addtogroup FLASH_Private_Variables
 111   * @{
 112   */
 113 /* Variable used for Erase sectors under interruption */
 114 FLASH_ProcessTypeDef pFlash;
 115 /**
 116   * @}
 117   */
 118
 119 /* Private function prototypes -----------------------------------------------*/
 120 /** @addtogroup FLASH_Private_Functions
 121   * @{
 122   */
 123 /* Program operations */
 124 static void   FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data);
 125 static void   FLASH_Program_Word(uint32_t Address, uint32_t Data);
 126 static void   FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
 127 static void   FLASH_Program_Byte(uint32_t Address, uint8_t Data);
 128 static void   FLASH_SetErrorCode(void);
 129
 130 HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout);
 131 /**
 132   * @}
 133   */
 134
 135 /* Exported functions --------------------------------------------------------*/
 136 /** @defgroup FLASH_Exported_Functions FLASH Exported Functions
 137   * @{
 138   */
 139
 140 /** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
 141  *  @brief   Programming operation functions
 142  *
 143 @verbatim
 144  ===============================================================================
 145                   ##### Programming operation functions #####
 146  ===============================================================================
 147     [..]
 148     This subsection provides a set of functions allowing to manage the FLASH
 149     program operations.
 150
 151 @endverbatim
 152   * @{
 153   */
 154
 155 /**
 156   * @brief  Program byte, halfword, word or double word at a specified address
 157   * @param  TypeProgram  Indicate the way to program at a specified address.
 158   *                           This parameter can be a value of @ref FLASH_Type_Program
 159   * @param  Address  specifies the address to be programmed.
 160   * @param  Data specifies the data to be programmed
 161   *
 162   * @retval HAL_StatusTypeDef HAL Status
 163   */
 164 HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
 165 {
 166   HAL_StatusTypeDef status = HAL_ERROR;
 167
 168   /* Process Locked */
 169   __HAL_LOCK(&pFlash);
 170
 171   /* Check the parameters */
 172   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
 173
 174   /* Wait for last operation to be completed */
 175   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 176
 177   if(status == HAL_OK)
 178   {
 179     switch(TypeProgram)
 180     {
 181       case FLASH_TYPEPROGRAM_BYTE :
 182       {
 183         /*Program byte (8-bit) at a specified address.*/
 184         FLASH_Program_Byte(Address, (uint8_t) Data);
 185         break;
 186       }
 187
 188       case FLASH_TYPEPROGRAM_HALFWORD :
 189       {
 190         /*Program halfword (16-bit) at a specified address.*/
 191         FLASH_Program_HalfWord(Address, (uint16_t) Data);
 192         break;
 193       }
 194
 195       case FLASH_TYPEPROGRAM_WORD :
 196       {
 197         /*Program word (32-bit) at a specified address.*/
 198         FLASH_Program_Word(Address, (uint32_t) Data);
 199         break;
 200       }
 201
 202       case FLASH_TYPEPROGRAM_DOUBLEWORD :
 203       {
 204         /*Program double word (64-bit) at a specified address.*/
 205         FLASH_Program_DoubleWord(Address, Data);
 206         break;
 207       }
 208       default :
 209         break;
 210     }
 211     /* Wait for last operation to be completed */
 212     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 213
 214     /* If the program operation is completed, disable the PG Bit */
 215     FLASH->CR &= (~FLASH_CR_PG);
 216   }
 217
 218   /* Process Unlocked */
 219   __HAL_UNLOCK(&pFlash);
 220
 221   return status;
 222 }
 223
 224 /**
 225   * @brief   Program byte, halfword, word or double word at a specified address  with interrupt enabled.
 226   * @param  TypeProgram  Indicate the way to program at a specified address.
 227   *                           This parameter can be a value of @ref FLASH_Type_Program
 228   * @param  Address  specifies the address to be programmed.
 229   * @param  Data specifies the data to be programmed
 230   *
 231   * @retval HAL Status
 232   */
 233 HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
 234 {
 235   HAL_StatusTypeDef status = HAL_OK;
 236
 237   /* Process Locked */
 238   __HAL_LOCK(&pFlash);
 239
 240   /* Check the parameters */
 241   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
 242
 243   /* Enable End of FLASH Operation interrupt */
 244   __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP);
 245
 246   /* Enable Error source interrupt */
 247   __HAL_FLASH_ENABLE_IT(FLASH_IT_ERR);
 248
 249   /* Clear pending flags (if any) */
 250   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP    | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |\
 251                          FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR| FLASH_FLAG_ERSERR);
 252
 253   pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM;
 254   pFlash.Address = Address;
 255
 256   switch(TypeProgram)
 257   {
 258     case FLASH_TYPEPROGRAM_BYTE :
 259     {
 260       /*Program byte (8-bit) at a specified address.*/
 261       FLASH_Program_Byte(Address, (uint8_t) Data);
 262       break;
 263     }
 264
 265     case FLASH_TYPEPROGRAM_HALFWORD :
 266     {
 267       /*Program halfword (16-bit) at a specified address.*/
 268       FLASH_Program_HalfWord(Address, (uint16_t) Data);
 269       break;
 270     }
 271
 272     case FLASH_TYPEPROGRAM_WORD :
 273     {
 274       /*Program word (32-bit) at a specified address.*/
 275       FLASH_Program_Word(Address, (uint32_t) Data);
 276       break;
 277     }
 278
 279     case FLASH_TYPEPROGRAM_DOUBLEWORD :
 280     {
 281       /*Program double word (64-bit) at a specified address.*/
 282       FLASH_Program_DoubleWord(Address, Data);
 283       break;
 284     }
 285     default :
 286       break;
 287   }
 288   return status;
 289 }
 290
 291 /**
 292   * @brief This function handles FLASH interrupt request.
 293   * @retval None
 294   */
 295 void HAL_FLASH_IRQHandler(void)
 296 {
 297   uint32_t temp = 0;
 298
 299   /* If the program operation is completed, disable the PG Bit */
 300   FLASH->CR &= (~FLASH_CR_PG);
 301
 302   /* If the erase operation is completed, disable the SER Bit */
 303   FLASH->CR &= (~FLASH_CR_SER);
 304   FLASH->CR &= SECTOR_MASK;
 305
 306   /* if the erase operation is completed, disable the MER Bit */
 307   FLASH->CR &= (~FLASH_MER_BIT);
 308
 309   /* Check FLASH End of Operation flag  */
 310   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET)
 311   {
 312     /* Clear FLASH End of Operation pending bit */
 313     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
 314
 315     switch (pFlash.ProcedureOnGoing)
 316     {
 317       case FLASH_PROC_SECTERASE :
 318       {
 319         /* Nb of sector to erased can be decreased */
 320         pFlash.NbSectorsToErase--;
 321
 322         /* Check if there are still sectors to erase */
 323         if(pFlash.NbSectorsToErase != 0)
 324         {
 325           temp = pFlash.Sector;
 326           /* Indicate user which sector has been erased */
 327           HAL_FLASH_EndOfOperationCallback(temp);
 328
 329           /* Increment sector number */
 330           temp = ++pFlash.Sector;
 331           FLASH_Erase_Sector(temp, pFlash.VoltageForErase);
 332         }
 333         else
 334         {
 335           /* No more sectors to Erase, user callback can be called.*/
 336           /* Reset Sector and stop Erase sectors procedure */
 337           pFlash.Sector = temp = 0xFFFFFFFFU;
 338           /* FLASH EOP interrupt user callback */
 339           HAL_FLASH_EndOfOperationCallback(temp);
 340           /* Sector Erase procedure is completed */
 341           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 342         }
 343         break;
 344       }
 345
 346       case FLASH_PROC_MASSERASE :
 347       {
 348         /* MassErase ended. Return the selected bank : in this product we don't have Banks */
 349         /* FLASH EOP interrupt user callback */
 350         HAL_FLASH_EndOfOperationCallback(0);
 351         /* MAss Erase procedure is completed */
 352         pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 353         break;
 354       }
 355
 356       case FLASH_PROC_PROGRAM :
 357       {
 358         /*Program ended. Return the selected address*/
 359         /* FLASH EOP interrupt user callback */
 360         HAL_FLASH_EndOfOperationCallback(pFlash.Address);
 361         /* Programming procedure is completed */
 362         pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 363         break;
 364       }
 365       default :
 366         break;
 367     }
 368   }
 369
 370   /* Check FLASH operation error flags */
 371   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET)
 372   {
 373     switch (pFlash.ProcedureOnGoing)
 374     {
 375       case FLASH_PROC_SECTERASE :
 376       {
 377         /* return the faulty sector */
 378         temp = pFlash.Sector;
 379         pFlash.Sector = 0xFFFFFFFFU;
 380         break;
 381       }
 382       case FLASH_PROC_MASSERASE :
 383       {
 384         /* No return in case of Mass Erase */
 385         temp = 0;
 386         break;
 387       }
 388       case FLASH_PROC_PROGRAM :
 389       {
 390         /*return the faulty address*/
 391         temp = pFlash.Address;
 392         break;
 393       }
 394     default :
 395       break;
 396     }
 397     /*Save the Error code*/
 398     FLASH_SetErrorCode();
 399
 400     /* FLASH error interrupt user callback */
 401     HAL_FLASH_OperationErrorCallback(temp);
 402
 403     /*Stop the procedure ongoing */
 404     pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 405   }
 406
 407   if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
 408   {
 409     /* Disable End of FLASH Operation interrupt */
 410     __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP);
 411
 412     /* Disable Error source interrupt */
 413     __HAL_FLASH_DISABLE_IT(FLASH_IT_ERR);
 414
 415     /* Process Unlocked */
 416     __HAL_UNLOCK(&pFlash);
 417   }
 418
 419 }
 420
 421 /**
 422   * @brief  FLASH end of operation interrupt callback
 423   * @param  ReturnValue The value saved in this parameter depends on the ongoing procedure
 424   *                 - Sectors Erase: Sector which has been erased (if 0xFFFFFFFF, it means that
 425   *                                  all the selected sectors have been erased)
 426   *                 - Program      : Address which was selected for data program
 427   *                 - Mass Erase   : No return value expected
 428   * @retval None
 429   */
 430 __weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
 431 {
 432   /* Prevent unused argument(s) compilation warning */
 433   UNUSED(ReturnValue);
 434   /* NOTE : This function Should not be modified, when the callback is needed,
 435   the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
 436   */
 437 }
 438
 439 /**
 440   * @brief  FLASH operation error interrupt callback
 441   * @param  ReturnValue The value saved in this parameter depends on the ongoing procedure
 442   *                 - Sectors Erase: Sector which has been erased (if 0xFFFFFFFF, it means that
 443   *                                  all the selected sectors have been erased)
 444   *                 - Program      : Address which was selected for data program
 445   *                 - Mass Erase   : No return value expected
 446   * @retval None
 447   */
 448 __weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
 449 {
 450   /* Prevent unused argument(s) compilation warning */
 451   UNUSED(ReturnValue);
 452   /* NOTE : This function Should not be modified, when the callback is needed,
 453   the HAL_FLASH_OperationErrorCallback could be implemented in the user file
 454    */
 455 }
 456
 457 /**
 458   * @}
 459   */
 460
 461 /** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
 462  *  @brief   management functions
 463  *
 464 @verbatim
 465  ===============================================================================
 466                       ##### Peripheral Control functions #####
 467  ===============================================================================
 468     [..]
 469     This subsection provides a set of functions allowing to control the FLASH
 470     memory operations.
 471
 472 @endverbatim
 473   * @{
 474   */
 475
 476 /**
 477   * @brief  Unlock the FLASH control register access
 478   * @retval HAL Status
 479   */
 480 HAL_StatusTypeDef HAL_FLASH_Unlock(void)
 481 {
 482   HAL_StatusTypeDef status = HAL_OK;
 483
 484   if(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != RESET)
 485   {
 486     /* Authorize the FLASH Registers access */
 487     WRITE_REG(FLASH->KEYR, FLASH_KEY1);
 488     WRITE_REG(FLASH->KEYR, FLASH_KEY2);
 489
 490     /* Verify Flash is unlocked */
 491     if(READ_BIT(FLASH->CR, FLASH_CR_LOCK) != RESET)
 492     {
 493       status = HAL_ERROR;
 494     }
 495   }
 496
 497   return status;
 498 }
 499
 500 /**
 501   * @brief  Locks the FLASH control register access
 502   * @retval HAL Status
 503   */
 504 HAL_StatusTypeDef HAL_FLASH_Lock(void)
 505 {
 506   /* Set the LOCK Bit to lock the FLASH Registers access */
 507   FLASH->CR |= FLASH_CR_LOCK;
 508
 509   return HAL_OK;
 510 }
 511
 512 /**
 513   * @brief  Unlock the FLASH Option Control Registers access.
 514   * @retval HAL Status
 515   */
 516 HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
 517 {
 518   if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET)
 519   {
 520     /* Authorizes the Option Byte register programming */
 521     FLASH->OPTKEYR = FLASH_OPT_KEY1;
 522     FLASH->OPTKEYR = FLASH_OPT_KEY2;
 523   }
 524   else
 525   {
 526     return HAL_ERROR;
 527   }
 528
 529   return HAL_OK;
 530 }
 531
 532 /**
 533   * @brief  Lock the FLASH Option Control Registers access.
 534   * @retval HAL Status
 535   */
 536 HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
 537 {
 538   /* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
 539   FLASH->OPTCR |= FLASH_OPTCR_OPTLOCK;
 540
 541   return HAL_OK;
 542 }
 543
 544 /**
 545   * @brief  Launch the option byte loading.
 546   * @retval HAL Status
 547   */
 548 HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
 549 {
 550   /* Set the OPTSTRT bit in OPTCR register */
 551   FLASH->OPTCR |= FLASH_OPTCR_OPTSTRT;
 552
 553   /* Wait for last operation to be completed */
 554   return(FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE));
 555 }
 556
 557 /**
 558   * @}
 559   */
 560
 561 /** @defgroup FLASH_Exported_Functions_Group3 Peripheral State and Errors functions
 562  *  @brief   Peripheral Errors functions
 563  *
 564 @verbatim
 565  ===============================================================================
 566                 ##### Peripheral Errors functions #####
 567  ===============================================================================
 568     [..]
 569     This subsection permits to get in run-time Errors of the FLASH peripheral.
 570
 571 @endverbatim
 572   * @{
 573   */
 574
 575 /**
 576   * @brief  Get the specific FLASH error flag.
 577   * @retval FLASH_ErrorCode: The returned value can be:
 578   *            @arg FLASH_ERROR_ERS: FLASH Erasing Sequence error flag
 579   *            @arg FLASH_ERROR_PGP: FLASH Programming Parallelism error flag
 580   *            @arg FLASH_ERROR_PGA: FLASH Programming Alignment error flag
 581   *            @arg FLASH_ERROR_WRP: FLASH Write protected error flag
 582   *            @arg FLASH_ERROR_OPERATION: FLASH operation Error flag
 583   */
 584 uint32_t HAL_FLASH_GetError(void)
 585 {
 586    return pFlash.ErrorCode;
 587 }
 588
 589 /**
 590   * @}
 591   */
 592
 593 /**
 594   * @brief  Wait for a FLASH operation to complete.
 595   * @param  Timeout maximum flash operationtimeout
 596   * @retval HAL Status
 597   */
 598 HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
 599 {
 600   uint32_t tickstart = 0;
 601
 602   /* Clear Error Code */
 603   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 604
 605   /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
 606      Even if the FLASH operation fails, the BUSY flag will be reset and an error
 607      flag will be set */
 608   /* Get tick */
 609   tickstart = HAL_GetTick();
 610
 611   while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY) != RESET)
 612   {
 613     if(Timeout != HAL_MAX_DELAY)
 614     {
 615       if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
 616       {
 617         return HAL_TIMEOUT;
 618       }
 619     }
 620   }
 621
 622   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET)
 623   {
 624     /*Save the error code*/
 625     FLASH_SetErrorCode();
 626     return HAL_ERROR;
 627   }
 628
 629   /* Check FLASH End of Operation flag  */
 630   if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET)
 631   {
 632     /* Clear FLASH End of Operation pending bit */
 633     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
 634   }
 635
 636   /* If there is an error flag set */
 637   return HAL_OK;
 638
 639 }
 640
 641 /**
 642   * @brief  Program a double word (64-bit) at a specified address.
 643   * @note   This function must be used when the device voltage range is from
 644   *         2.7V to 3.6V and an External Vpp is present.
 645   *
 646   * @note   If an erase and a program operations are requested simultaneously,
 647   *         the erase operation is performed before the program one.
 648   *
 649   * @param  Address specifies the address to be programmed.
 650   * @param  Data specifies the data to be programmed.
 651   * @retval None
 652   */
 653 static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data)
 654 {
 655   /* Check the parameters */
 656   assert_param(IS_FLASH_ADDRESS(Address));
 657
 658   /* If the previous operation is completed, proceed to program the new data */
 659   FLASH->CR &= CR_PSIZE_MASK;
 660   FLASH->CR |= FLASH_PSIZE_DOUBLE_WORD;
 661   FLASH->CR |= FLASH_CR_PG;
 662
 663   /* Program the double-word */
 664   *(__IO uint32_t*)Address = (uint32_t)Data;
 665   *(__IO uint32_t*)(Address+4) = (uint32_t)(Data >> 32);
 666
 667   /* Data synchronous Barrier (DSB) Just after the write operation
 668      This will force the CPU to respect the sequence of instruction (no optimization).*/
 669   __DSB();
 670 }
 671
 672
 673 /**
 674   * @brief  Program word (32-bit) at a specified address.
 675   * @note   This function must be used when the device voltage range is from
 676   *         2.7V to 3.6V.
 677   *
 678   * @note   If an erase and a program operations are requested simultaneously,
 679   *         the erase operation is performed before the program one.
 680   *
 681   * @param  Address specifies the address to be programmed.
 682   * @param  Data specifies the data to be programmed.
 683   * @retval None
 684   */
 685 static void FLASH_Program_Word(uint32_t Address, uint32_t Data)
 686 {
 687   /* Check the parameters */
 688   assert_param(IS_FLASH_ADDRESS(Address));
 689
 690   /* If the previous operation is completed, proceed to program the new data */
 691   FLASH->CR &= CR_PSIZE_MASK;
 692   FLASH->CR |= FLASH_PSIZE_WORD;
 693   FLASH->CR |= FLASH_CR_PG;
 694
 695   *(__IO uint32_t*)Address = Data;
 696
 697   /* Data synchronous Barrier (DSB) Just after the write operation
 698      This will force the CPU to respect the sequence of instruction (no optimization).*/
 699   __DSB();
 700 }
 701
 702 /**
 703   * @brief  Program a half-word (16-bit) at a specified address.
 704   * @note   This function must be used when the device voltage range is from
 705   *         2.7V to 3.6V.
 706   *
 707   * @note   If an erase and a program operations are requested simultaneously,
 708   *         the erase operation is performed before the program one.
 709   *
 710   * @param  Address specifies the address to be programmed.
 711   * @param  Data specifies the data to be programmed.
 712   * @retval None
 713   */
 714 static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
 715 {
 716   /* Check the parameters */
 717   assert_param(IS_FLASH_ADDRESS(Address));
 718
 719   /* If the previous operation is completed, proceed to program the new data */
 720   FLASH->CR &= CR_PSIZE_MASK;
 721   FLASH->CR |= FLASH_PSIZE_HALF_WORD;
 722   FLASH->CR |= FLASH_CR_PG;
 723
 724   *(__IO uint16_t*)Address = Data;
 725
 726   /* Data synchronous Barrier (DSB) Just after the write operation
 727      This will force the CPU to respect the sequence of instruction (no optimization).*/
 728   __DSB();
 729
 730 }
 731
 732 /**
 733   * @brief  Program byte (8-bit) at a specified address.
 734   * @note   This function must be used when the device voltage range is from
 735   *         2.7V to 3.6V.
 736   *
 737   * @note   If an erase and a program operations are requested simultaneously,
 738   *         the erase operation is performed before the program one.
 739   *
 740   * @param  Address specifies the address to be programmed.
 741   * @param  Data specifies the data to be programmed.
 742   * @retval None
 743   */
 744 static void FLASH_Program_Byte(uint32_t Address, uint8_t Data)
 745 {
 746   /* Check the parameters */
 747   assert_param(IS_FLASH_ADDRESS(Address));
 748
 749   /* If the previous operation is completed, proceed to program the new data */
 750   FLASH->CR &= CR_PSIZE_MASK;
 751   FLASH->CR |= FLASH_PSIZE_BYTE;
 752   FLASH->CR |= FLASH_CR_PG;
 753
 754   *(__IO uint8_t*)Address = Data;
 755
 756   /* Data synchronous Barrier (DSB) Just after the write operation
 757      This will force the CPU to respect the sequence of instruction (no optimization).*/
 758   __DSB();
 759 }
 760
 761 /**
 762   * @brief  Set the specific FLASH error flag.
 763   * @retval None
 764   */
 765 static void FLASH_SetErrorCode(void)
 766 {
 767   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPERR) != RESET)
 768   {
 769     pFlash.ErrorCode |= HAL_FLASH_ERROR_OPERATION;
 770   }
 771
 772   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) != RESET)
 773   {
 774    pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
 775   }
 776
 777   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGAERR) != RESET)
 778   {
 779    pFlash.ErrorCode |= HAL_FLASH_ERROR_PGA;
 780   }
 781
 782   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGPERR) != RESET)
 783   {
 784     pFlash.ErrorCode |= HAL_FLASH_ERROR_PGP;
 785   }
 786
 787   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ERSERR) != RESET)
 788   {
 789     pFlash.ErrorCode |= HAL_FLASH_ERROR_ERS;
 790   }
 791
 792 #if defined (FLASH_OPTCR2_PCROP)
 793   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_RDERR) != RESET)
 794   {
 795    pFlash.ErrorCode |= HAL_FLASH_ERROR_RD;
 796   }
 797 #endif /* FLASH_OPTCR2_PCROP */
 798
 799   /* Clear error programming flags */
 800   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
 801 }
 802
 803 /**
 804   * @}
 805   */
 806
 807 #endif /* HAL_FLASH_MODULE_ENABLED */
 808
 809 /**
 810   * @}
 811   */
 812
 813 /**
 814   * @}
 815   */
 816
 817 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/