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   * @version V1.2.2
   6   * @date    14-April-2017
   7   * @brief   FLASH HAL module driver.
   8   *          This file provides firmware functions to manage the following
   9   *          functionalities of the internal FLASH memory:
  10   *           + Program operations functions
  11   *           + Memory Control functions
  12   *           + Peripheral Errors functions
  13   *
  14   @verbatim
  15   ==============================================================================
  16                         ##### FLASH peripheral features #####
  17   ==============================================================================
  18
  19   [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
  20        to the Flash memory. It implements the erase and program Flash memory operations
  21        and the read and write protection mechanisms.
  22
  23   [..] The Flash memory interface accelerates code execution with a system of instruction
  24        prefetch and cache lines.
  25
  26   [..] The FLASH main features are:
  27       (+) Flash memory read operations
  28       (+) Flash memory program/erase operations
  29       (+) Read / write protections
  30       (+) Prefetch on I-Code
  31       (+) 64 cache lines of 128 bits on I-Code
  32       (+) 8 cache lines of 128 bits on D-Code
  33
  34                      ##### How to use this driver #####
  35   ==============================================================================
  36     [..]
  37       This driver provides functions and macros to configure and program the FLASH
  38       memory of all STM32F7xx devices.
  39
  40       (#) FLASH Memory IO Programming functions:
  41            (++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and
  42                 HAL_FLASH_Lock() functions
  43            (++) Program functions: byte, half word, word and double word
  44            (++) There Two modes of programming :
  45             (+++) Polling mode using HAL_FLASH_Program() function
  46             (+++) Interrupt mode using HAL_FLASH_Program_IT() function
  47
  48       (#) Interrupts and flags management functions :
  49            (++) Handle FLASH interrupts by calling HAL_FLASH_IRQHandler()
  50            (++) Wait for last FLASH operation according to its status
  51            (++) Get error flag status by calling HAL_SetErrorCode()
  52     [..]
  53       In addition to these functions, this driver includes a set of macros allowing
  54       to handle the following operations:
  55        (+) Set the latency
  56        (+) Enable/Disable the prefetch buffer
  57        (+) Enable/Disable the Instruction cache and the Data cache
  58        (+) Reset the Instruction cache and the Data cache
  59        (+) Enable/Disable the FLASH interrupts
  60        (+) Monitor the FLASH flags status
  61     [..]
  62         (@) For any Flash memory program operation (erase or program), the CPU clock frequency
  63         (HCLK) must be at least 1MHz.
  64         (@) The contents of the Flash memory are not guaranteed if a device reset occurs during
  65             a Flash memory operation.
  66     (@) Any attempt to read the Flash memory while it is being written or erased, causes the
  67             bus to stall. Read operations are processed correctly once the program operation has
  68                 completed. This means that code or data fetches cannot be performed while a write/erase
  69                 operation is ongoing.
  70
  71   @endverbatim
  72   ******************************************************************************
  73   * @attention
  74   *
  75   * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  76   *
  77   * Redistribution and use in source and binary forms, with or without modification,
  78   * are permitted provided that the following conditions are met:
  79   *   1. Redistributions of source code must retain the above copyright notice,
  80   *      this list of conditions and the following disclaimer.
  81   *   2. Redistributions in binary form must reproduce the above copyright notice,
  82   *      this list of conditions and the following disclaimer in the documentation
  83   *      and/or other materials provided with the distribution.
  84   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  85   *      may be used to endorse or promote products derived from this software
  86   *      without specific prior written permission.
  87   *
  88   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  89   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  90   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  91   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  92   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  93   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  94   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  95   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  96   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  97   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  98   *
  99   ******************************************************************************
 100   */
 101
 102 /* Includes ------------------------------------------------------------------*/
 103 #include "stm32f7xx_hal.h"
 104
 105 /** @addtogroup STM32F7xx_HAL_Driver
 106   * @{
 107   */
 108
 109 /** @defgroup FLASH FLASH
 110   * @brief FLASH HAL module driver
 111   * @{
 112   */
 113
 114 #ifdef HAL_FLASH_MODULE_ENABLED
 115
 116 /* Private typedef -----------------------------------------------------------*/
 117 /* Private define ------------------------------------------------------------*/
 118 /** @addtogroup FLASH_Private_Constants
 119   * @{
 120   */
 121 #define SECTOR_MASK               ((uint32_t)0xFFFFFF07U)
 122 #define FLASH_TIMEOUT_VALUE       ((uint32_t)50000U)/* 50 s */
 123 /**
 124   * @}
 125   */
 126 /* Private macro -------------------------------------------------------------*/
 127 /* Private variables ---------------------------------------------------------*/
 128 /** @addtogroup FLASH_Private_Variables
 129   * @{
 130   */
 131 /* Variable used for Erase sectors under interruption */
 132 FLASH_ProcessTypeDef pFlash;
 133 /**
 134   * @}
 135   */
 136
 137 /* Private function prototypes -----------------------------------------------*/
 138 /** @addtogroup FLASH_Private_Functions
 139   * @{
 140   */
 141 /* Program operations */
 142 static void   FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data);
 143 static void   FLASH_Program_Word(uint32_t Address, uint32_t Data);
 144 static void   FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
 145 static void   FLASH_Program_Byte(uint32_t Address, uint8_t Data);
 146 static void   FLASH_SetErrorCode(void);
 147
 148 HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout);
 149 /**
 150   * @}
 151   */
 152
 153 /* Exported functions --------------------------------------------------------*/
 154 /** @defgroup FLASH_Exported_Functions FLASH Exported Functions
 155   * @{
 156   */
 157
 158 /** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
 159  *  @brief   Programming operation functions
 160  *
 161 @verbatim
 162  ===============================================================================
 163                   ##### Programming operation functions #####
 164  ===============================================================================
 165     [..]
 166     This subsection provides a set of functions allowing to manage the FLASH
 167     program operations.
 168
 169 @endverbatim
 170   * @{
 171   */
 172
 173 /**
 174   * @brief  Program byte, halfword, word or double word at a specified address
 175   * @param  TypeProgram:  Indicate the way to program at a specified address.
 176   *                           This parameter can be a value of @ref FLASH_Type_Program
 177   * @param  Address:  specifies the address to be programmed.
 178   * @param  Data: specifies the data to be programmed
 179   *
 180   * @retval HAL_StatusTypeDef HAL Status
 181   */
 182 HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
 183 {
 184   HAL_StatusTypeDef status = HAL_ERROR;
 185
 186   /* Process Locked */
 187   __HAL_LOCK(&pFlash);
 188
 189   /* Check the parameters */
 190   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
 191
 192   /* Wait for last operation to be completed */
 193   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 194
 195   if(status == HAL_OK)
 196   {
 197     switch(TypeProgram)
 198     {
 199       case FLASH_TYPEPROGRAM_BYTE :
 200       {
 201         /*Program byte (8-bit) at a specified address.*/
 202         FLASH_Program_Byte(Address, (uint8_t) Data);
 203         break;
 204       }
 205
 206       case FLASH_TYPEPROGRAM_HALFWORD :
 207       {
 208         /*Program halfword (16-bit) at a specified address.*/
 209         FLASH_Program_HalfWord(Address, (uint16_t) Data);
 210         break;
 211       }
 212
 213       case FLASH_TYPEPROGRAM_WORD :
 214       {
 215         /*Program word (32-bit) at a specified address.*/
 216         FLASH_Program_Word(Address, (uint32_t) Data);
 217         break;
 218       }
 219
 220       case FLASH_TYPEPROGRAM_DOUBLEWORD :
 221       {
 222         /*Program double word (64-bit) at a specified address.*/
 223         FLASH_Program_DoubleWord(Address, Data);
 224         break;
 225       }
 226       default :
 227         break;
 228     }
 229     /* Wait for last operation to be completed */
 230     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 231
 232     /* If the program operation is completed, disable the PG Bit */
 233     FLASH->CR &= (~FLASH_CR_PG);
 234   }
 235
 236   /* Process Unlocked */
 237   __HAL_UNLOCK(&pFlash);
 238
 239   return status;
 240 }
 241
 242 /**
 243   * @brief   Program byte, halfword, word or double word at a specified address  with interrupt enabled.
 244   * @param  TypeProgram:  Indicate the way to program at a specified address.
 245   *                           This parameter can be a value of @ref FLASH_Type_Program
 246   * @param  Address:  specifies the address to be programmed.
 247   * @param  Data: specifies the data to be programmed
 248   *
 249   * @retval HAL Status
 250   */
 251 HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
 252 {
 253   HAL_StatusTypeDef status = HAL_OK;
 254
 255   /* Process Locked */
 256   __HAL_LOCK(&pFlash);
 257
 258   /* Check the parameters */
 259   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
 260
 261   /* Enable End of FLASH Operation interrupt */
 262   __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP);
 263
 264   /* Enable Error source interrupt */
 265   __HAL_FLASH_ENABLE_IT(FLASH_IT_ERR);
 266
 267   /* Clear pending flags (if any) */
 268   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP    | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |\
 269                          FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR| FLASH_FLAG_ERSERR);
 270
 271   pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM;
 272   pFlash.Address = Address;
 273
 274   switch(TypeProgram)
 275   {
 276     case FLASH_TYPEPROGRAM_BYTE :
 277     {
 278       /*Program byte (8-bit) at a specified address.*/
 279       FLASH_Program_Byte(Address, (uint8_t) Data);
 280       break;
 281     }
 282
 283     case FLASH_TYPEPROGRAM_HALFWORD :
 284     {
 285       /*Program halfword (16-bit) at a specified address.*/
 286       FLASH_Program_HalfWord(Address, (uint16_t) Data);
 287       break;
 288     }
 289
 290     case FLASH_TYPEPROGRAM_WORD :
 291     {
 292       /*Program word (32-bit) at a specified address.*/
 293       FLASH_Program_Word(Address, (uint32_t) Data);
 294       break;
 295     }
 296
 297     case FLASH_TYPEPROGRAM_DOUBLEWORD :
 298     {
 299       /*Program double word (64-bit) at a specified address.*/
 300       FLASH_Program_DoubleWord(Address, Data);
 301       break;
 302     }
 303     default :
 304       break;
 305   }
 306   return status;
 307 }
 308
 309 /**
 310   * @brief This function handles FLASH interrupt request.
 311   * @retval None
 312   */
 313 void HAL_FLASH_IRQHandler(void)
 314 {
 315   uint32_t temp = 0;
 316
 317   /* If the program operation is completed, disable the PG Bit */
 318   FLASH->CR &= (~FLASH_CR_PG);
 319
 320   /* If the erase operation is completed, disable the SER Bit */
 321   FLASH->CR &= (~FLASH_CR_SER);
 322   FLASH->CR &= SECTOR_MASK;
 323
 324   /* if the erase operation is completed, disable the MER Bit */
 325   FLASH->CR &= (~FLASH_MER_BIT);
 326
 327   /* Check FLASH End of Operation flag  */
 328   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET)
 329   {
 330     /* Clear FLASH End of Operation pending bit */
 331     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
 332
 333     switch (pFlash.ProcedureOnGoing)
 334     {
 335       case FLASH_PROC_SECTERASE :
 336       {
 337         /* Nb of sector to erased can be decreased */
 338         pFlash.NbSectorsToErase--;
 339
 340         /* Check if there are still sectors to erase */
 341         if(pFlash.NbSectorsToErase != 0)
 342         {
 343           temp = pFlash.Sector;
 344           /* Indicate user which sector has been erased */
 345           HAL_FLASH_EndOfOperationCallback(temp);
 346
 347           /* Increment sector number */
 348           temp = ++pFlash.Sector;
 349           FLASH_Erase_Sector(temp, pFlash.VoltageForErase);
 350         }
 351         else
 352         {
 353           /* No more sectors to Erase, user callback can be called.*/
 354           /* Reset Sector and stop Erase sectors procedure */
 355           pFlash.Sector = temp = 0xFFFFFFFFU;
 356           /* FLASH EOP interrupt user callback */
 357           HAL_FLASH_EndOfOperationCallback(temp);
 358           /* Sector Erase procedure is completed */
 359           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 360         }
 361         break;
 362       }
 363
 364       case FLASH_PROC_MASSERASE :
 365       {
 366         /* MassErase ended. Return the selected bank : in this product we don't have Banks */
 367         /* FLASH EOP interrupt user callback */
 368         HAL_FLASH_EndOfOperationCallback(0);
 369         /* MAss Erase procedure is completed */
 370         pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 371         break;
 372       }
 373
 374       case FLASH_PROC_PROGRAM :
 375       {
 376         /*Program ended. Return the selected address*/
 377         /* FLASH EOP interrupt user callback */
 378         HAL_FLASH_EndOfOperationCallback(pFlash.Address);
 379         /* Programming procedure is completed */
 380         pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 381         break;
 382       }
 383       default :
 384         break;
 385     }
 386   }
 387
 388   /* Check FLASH operation error flags */
 389   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET)
 390   {
 391     switch (pFlash.ProcedureOnGoing)
 392     {
 393       case FLASH_PROC_SECTERASE :
 394       {
 395         /* return the faulty sector */
 396         temp = pFlash.Sector;
 397         pFlash.Sector = 0xFFFFFFFFU;
 398         break;
 399       }
 400       case FLASH_PROC_MASSERASE :
 401       {
 402         /* No return in case of Mass Erase */
 403         temp = 0;
 404         break;
 405       }
 406       case FLASH_PROC_PROGRAM :
 407       {
 408         /*return the faulty address*/
 409         temp = pFlash.Address;
 410         break;
 411       }
 412     default :
 413       break;
 414     }
 415     /*Save the Error code*/
 416     FLASH_SetErrorCode();
 417
 418     /* FLASH error interrupt user callback */
 419     HAL_FLASH_OperationErrorCallback(temp);
 420
 421     /*Stop the procedure ongoing */
 422     pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
 423   }
 424
 425   if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
 426   {
 427     /* Disable End of FLASH Operation interrupt */
 428     __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP);
 429
 430     /* Disable Error source interrupt */
 431     __HAL_FLASH_DISABLE_IT(FLASH_IT_ERR);
 432
 433     /* Process Unlocked */
 434     __HAL_UNLOCK(&pFlash);
 435   }
 436
 437 }
 438
 439 /**
 440   * @brief  FLASH end of operation 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_EndOfOperationCallback(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_EndOfOperationCallback could be implemented in the user file
 454   */
 455 }
 456
 457 /**
 458   * @brief  FLASH operation error interrupt callback
 459   * @param  ReturnValue: The value saved in this parameter depends on the ongoing procedure
 460   *                 - Sectors Erase: Sector which has been erased (if 0xFFFFFFFF, it means that
 461   *                                  all the selected sectors have been erased)
 462   *                 - Program      : Address which was selected for data program
 463   *                 - Mass Erase   : No return value expected
 464   * @retval None
 465   */
 466 __weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
 467 {
 468   /* Prevent unused argument(s) compilation warning */
 469   UNUSED(ReturnValue);
 470   /* NOTE : This function Should not be modified, when the callback is needed,
 471   the HAL_FLASH_OperationErrorCallback could be implemented in the user file
 472    */
 473 }
 474
 475 /**
 476   * @}
 477   */
 478
 479 /** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
 480  *  @brief   management functions
 481  *
 482 @verbatim
 483  ===============================================================================
 484                       ##### Peripheral Control functions #####
 485  ===============================================================================
 486     [..]
 487     This subsection provides a set of functions allowing to control the FLASH
 488     memory operations.
 489
 490 @endverbatim
 491   * @{
 492   */
 493
 494 /**
 495   * @brief  Unlock the FLASH control register access
 496   * @retval HAL Status
 497   */
 498 HAL_StatusTypeDef HAL_FLASH_Unlock(void)
 499 {
 500   if((FLASH->CR & FLASH_CR_LOCK) != RESET)
 501   {
 502     /* Authorize the FLASH Registers access */
 503     FLASH->KEYR = FLASH_KEY1;
 504     FLASH->KEYR = FLASH_KEY2;
 505   }
 506   else
 507   {
 508     return HAL_ERROR;
 509   }
 510
 511   return HAL_OK;
 512 }
 513
 514 /**
 515   * @brief  Locks the FLASH control register access
 516   * @retval HAL Status
 517   */
 518 HAL_StatusTypeDef HAL_FLASH_Lock(void)
 519 {
 520   /* Set the LOCK Bit to lock the FLASH Registers access */
 521   FLASH->CR |= FLASH_CR_LOCK;
 522
 523   return HAL_OK;
 524 }
 525
 526 /**
 527   * @brief  Unlock the FLASH Option Control Registers access.
 528   * @retval HAL Status
 529   */
 530 HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
 531 {
 532   if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET)
 533   {
 534     /* Authorizes the Option Byte register programming */
 535     FLASH->OPTKEYR = FLASH_OPT_KEY1;
 536     FLASH->OPTKEYR = FLASH_OPT_KEY2;
 537   }
 538   else
 539   {
 540     return HAL_ERROR;
 541   }
 542
 543   return HAL_OK;
 544 }
 545
 546 /**
 547   * @brief  Lock the FLASH Option Control Registers access.
 548   * @retval HAL Status
 549   */
 550 HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
 551 {
 552   /* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
 553   FLASH->OPTCR |= FLASH_OPTCR_OPTLOCK;
 554
 555   return HAL_OK;
 556 }
 557
 558 /**
 559   * @brief  Launch the option byte loading.
 560   * @retval HAL Status
 561   */
 562 HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
 563 {
 564   /* Set the OPTSTRT bit in OPTCR register */
 565   FLASH->OPTCR |= FLASH_OPTCR_OPTSTRT;
 566
 567   /* Wait for last operation to be completed */
 568   return(FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE));
 569 }
 570
 571 /**
 572   * @}
 573   */
 574
 575 /** @defgroup FLASH_Exported_Functions_Group3 Peripheral State and Errors functions
 576  *  @brief   Peripheral Errors functions
 577  *
 578 @verbatim
 579  ===============================================================================
 580                 ##### Peripheral Errors functions #####
 581  ===============================================================================
 582     [..]
 583     This subsection permits to get in run-time Errors of the FLASH peripheral.
 584
 585 @endverbatim
 586   * @{
 587   */
 588
 589 /**
 590   * @brief  Get the specific FLASH error flag.
 591   * @retval FLASH_ErrorCode: The returned value can be:
 592   *            @arg FLASH_ERROR_ERS: FLASH Erasing Sequence error flag
 593   *            @arg FLASH_ERROR_PGP: FLASH Programming Parallelism error flag
 594   *            @arg FLASH_ERROR_PGA: FLASH Programming Alignment error flag
 595   *            @arg FLASH_ERROR_WRP: FLASH Write protected error flag
 596   *            @arg FLASH_ERROR_OPERATION: FLASH operation Error flag
 597   */
 598 uint32_t HAL_FLASH_GetError(void)
 599 {
 600    return pFlash.ErrorCode;
 601 }
 602
 603 /**
 604   * @}
 605   */
 606
 607 /**
 608   * @brief  Wait for a FLASH operation to complete.
 609   * @param  Timeout: maximum flash operationtimeout
 610   * @retval HAL Status
 611   */
 612 HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
 613 {
 614   uint32_t tickstart = 0;
 615
 616   /* Clear Error Code */
 617   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 618
 619   /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
 620      Even if the FLASH operation fails, the BUSY flag will be reset and an error
 621      flag will be set */
 622   /* Get tick */
 623   tickstart = HAL_GetTick();
 624
 625   while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY) != RESET)
 626   {
 627     if(Timeout != HAL_MAX_DELAY)
 628     {
 629       if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
 630       {
 631         return HAL_TIMEOUT;
 632       }
 633     }
 634   }
 635
 636   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET)
 637   {
 638     /*Save the error code*/
 639     FLASH_SetErrorCode();
 640     return HAL_ERROR;
 641   }
 642
 643   /* Check FLASH End of Operation flag  */
 644   if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET)
 645   {
 646     /* Clear FLASH End of Operation pending bit */
 647     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
 648   }
 649
 650   /* If there is an error flag set */
 651   return HAL_OK;
 652
 653 }
 654
 655 /**
 656   * @brief  Program a double word (64-bit) at a specified address.
 657   * @note   This function must be used when the device voltage range is from
 658   *         2.7V to 3.6V and an External Vpp is present.
 659   *
 660   * @note   If an erase and a program operations are requested simultaneously,
 661   *         the erase operation is performed before the program one.
 662   *
 663   * @param  Address: specifies the address to be programmed.
 664   * @param  Data: specifies the data to be programmed.
 665   * @retval None
 666   */
 667 static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data)
 668 {
 669   /* Check the parameters */
 670   assert_param(IS_FLASH_ADDRESS(Address));
 671
 672   /* If the previous operation is completed, proceed to program the new data */
 673   FLASH->CR &= CR_PSIZE_MASK;
 674   FLASH->CR |= FLASH_PSIZE_DOUBLE_WORD;
 675   FLASH->CR |= FLASH_CR_PG;
 676
 677   *(__IO uint64_t*)Address = Data;
 678
 679   /* Data synchronous Barrier (DSB) Just after the write operation
 680      This will force the CPU to respect the sequence of instruction (no optimization).*/
 681   __DSB();
 682 }
 683
 684
 685 /**
 686   * @brief  Program word (32-bit) at a specified address.
 687   * @note   This function must be used when the device voltage range is from
 688   *         2.7V to 3.6V.
 689   *
 690   * @note   If an erase and a program operations are requested simultaneously,
 691   *         the erase operation is performed before the program one.
 692   *
 693   * @param  Address: specifies the address to be programmed.
 694   * @param  Data: specifies the data to be programmed.
 695   * @retval None
 696   */
 697 static void FLASH_Program_Word(uint32_t Address, uint32_t Data)
 698 {
 699   /* Check the parameters */
 700   assert_param(IS_FLASH_ADDRESS(Address));
 701
 702   /* If the previous operation is completed, proceed to program the new data */
 703   FLASH->CR &= CR_PSIZE_MASK;
 704   FLASH->CR |= FLASH_PSIZE_WORD;
 705   FLASH->CR |= FLASH_CR_PG;
 706
 707   *(__IO uint32_t*)Address = Data;
 708
 709   /* Data synchronous Barrier (DSB) Just after the write operation
 710      This will force the CPU to respect the sequence of instruction (no optimization).*/
 711   __DSB();
 712 }
 713
 714 /**
 715   * @brief  Program a half-word (16-bit) at a specified address.
 716   * @note   This function must be used when the device voltage range is from
 717   *         2.7V to 3.6V.
 718   *
 719   * @note   If an erase and a program operations are requested simultaneously,
 720   *         the erase operation is performed before the program one.
 721   *
 722   * @param  Address: specifies the address to be programmed.
 723   * @param  Data: specifies the data to be programmed.
 724   * @retval None
 725   */
 726 static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
 727 {
 728   /* Check the parameters */
 729   assert_param(IS_FLASH_ADDRESS(Address));
 730
 731   /* If the previous operation is completed, proceed to program the new data */
 732   FLASH->CR &= CR_PSIZE_MASK;
 733   FLASH->CR |= FLASH_PSIZE_HALF_WORD;
 734   FLASH->CR |= FLASH_CR_PG;
 735
 736   *(__IO uint16_t*)Address = Data;
 737
 738   /* Data synchronous Barrier (DSB) Just after the write operation
 739      This will force the CPU to respect the sequence of instruction (no optimization).*/
 740   __DSB();
 741
 742 }
 743
 744 /**
 745   * @brief  Program byte (8-bit) at a specified address.
 746   * @note   This function must be used when the device voltage range is from
 747   *         2.7V to 3.6V.
 748   *
 749   * @note   If an erase and a program operations are requested simultaneously,
 750   *         the erase operation is performed before the program one.
 751   *
 752   * @param  Address: specifies the address to be programmed.
 753   * @param  Data: specifies the data to be programmed.
 754   * @retval None
 755   */
 756 static void FLASH_Program_Byte(uint32_t Address, uint8_t Data)
 757 {
 758   /* Check the parameters */
 759   assert_param(IS_FLASH_ADDRESS(Address));
 760
 761   /* If the previous operation is completed, proceed to program the new data */
 762   FLASH->CR &= CR_PSIZE_MASK;
 763   FLASH->CR |= FLASH_PSIZE_BYTE;
 764   FLASH->CR |= FLASH_CR_PG;
 765
 766   *(__IO uint8_t*)Address = Data;
 767
 768   /* Data synchronous Barrier (DSB) Just after the write operation
 769      This will force the CPU to respect the sequence of instruction (no optimization).*/
 770   __DSB();
 771 }
 772
 773 /**
 774   * @brief  Set the specific FLASH error flag.
 775   * @retval None
 776   */
 777 static void FLASH_SetErrorCode(void)
 778 {
 779   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPERR) != RESET)
 780   {
 781     pFlash.ErrorCode |= HAL_FLASH_ERROR_OPERATION;
 782   }
 783
 784   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) != RESET)
 785   {
 786    pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
 787   }
 788
 789   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGAERR) != RESET)
 790   {
 791    pFlash.ErrorCode |= HAL_FLASH_ERROR_PGA;
 792   }
 793
 794   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGPERR) != RESET)
 795   {
 796     pFlash.ErrorCode |= HAL_FLASH_ERROR_PGP;
 797   }
 798
 799   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ERSERR) != RESET)
 800   {
 801     pFlash.ErrorCode |= HAL_FLASH_ERROR_ERS;
 802   }
 803
 804 #if defined (FLASH_OPTCR2_PCROP)
 805   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_RDERR) != RESET)
 806   {
 807    pFlash.ErrorCode |= HAL_FLASH_ERROR_RD;
 808   }
 809 #endif /* FLASH_OPTCR2_PCROP */
 810
 811   /* Clear error programming flags */
 812   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
 813 }
 814
 815 /**
 816   * @}
 817   */
 818
 819 #endif /* HAL_FLASH_MODULE_ENABLED */
 820
 821 /**
 822   * @}
 823   */
 824
 825 /**
 826   * @}
 827   */
 828
 829 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/