tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_flash_ex.c

   1 /**
   2   ******************************************************************************
   3   * @file    stm32f1xx_hal_flash_ex.c
   4   * @author  MCD Application Team
   5   * @version V1.0.0
   6   * @date    15-December-2014
   7   * @brief   Extended FLASH HAL module driver.
   8   *
   9   *          This file provides firmware functions to manage the following
  10   *          functionalities of the FLASH peripheral:
  11   *           + Extended Initialization/de-initialization functions
  12   *           + Extended I/O operation functions
  13   *           + Extended Peripheral Control functions
  14   *
  15   @verbatim
  16   ==============================================================================
  17                ##### Flash peripheral extended features  #####
  18   ==============================================================================
  19
  20                       ##### How to use this driver #####
  21   ==============================================================================
  22   [..] This driver provides functions to configure and program the FLASH memory
  23        of all STM32F1xxx devices. It includes
  24
  25         (++) Set/Reset the write protection
  26         (++) Program the user Option Bytes
  27         (++) Get the Read protection Level
  28
  29   @endverbatim
  30   ******************************************************************************
  31   * @attention
  32   *
  33   * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
  34   *
  35   * Redistribution and use in source and binary forms, with or without modification,
  36   * are permitted provided that the following conditions are met:
  37   *   1. Redistributions of source code must retain the above copyright notice,
  38   *      this list of conditions and the following disclaimer.
  39   *   2. Redistributions in binary form must reproduce the above copyright notice,
  40   *      this list of conditions and the following disclaimer in the documentation
  41   *      and/or other materials provided with the distribution.
  42   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  43   *      may be used to endorse or promote products derived from this software
  44   *      without specific prior written permission.
  45   *
  46   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  47   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  49   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  50   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  52   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  53   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  54   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  55   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  56   *
  57   ******************************************************************************
  58   */
  59
  60 /* Includes ------------------------------------------------------------------*/
  61 #include "stm32f1xx_hal.h"
  62
  63 /** @addtogroup STM32F1xx_HAL_Driver
  64   * @{
  65   */
  66 #ifdef HAL_FLASH_MODULE_ENABLED
  67
  68 /** @addtogroup FLASH
  69   * @{
  70   */
  71 /** @addtogroup FLASH_Private_Variables
  72  * @{
  73  */
  74 /* Variables used for Erase pages under interruption*/
  75 extern FLASH_ProcessTypeDef pFlash;
  76 /**
  77   * @}
  78   */
  79
  80 /**
  81   * @}
  82   */
  83
  84 /** @defgroup FLASHEx FLASHEx
  85   * @brief FLASH Extended HAL module driver
  86   * @{
  87   */
  88
  89 /* Private typedef -----------------------------------------------------------*/
  90 /* Private define ------------------------------------------------------------*/
  91 /** @defgroup FLASHEx_Private_Constants FLASHEx Private Constants
  92  * @{
  93  */
  94 /**
  95   * @}
  96   */
  97
  98 /* Private macro -------------------------------------------------------------*/
  99 /** @defgroup FLASHEx_Private_Macros FLASHEx Private Macros
 100   * @{
 101   */
 102 /**
 103   * @}
 104   */
 105
 106 /* Private variables ---------------------------------------------------------*/
 107 /* Private function prototypes -----------------------------------------------*/
 108 /** @defgroup FLASHEx_Private_Functions FLASHEx Private Functions
 109  * @{
 110  */
 111 /* Erase operations */
 112 static void              FLASH_MassErase(uint32_t Banks);
 113
 114 /* Option bytes control */
 115 static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage);
 116 static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage);
 117 static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel);
 118 static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig);
 119 static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data);
 120 static uint32_t          FLASH_OB_GetWRP(void);
 121 static FlagStatus        FLASH_OB_GetRDP(void);
 122 static uint8_t           FLASH_OB_GetUser(void);
 123
 124 #if  defined(STM32F101xG) || defined(STM32F103xG)
 125 /* State operations */
 126 static HAL_StatusTypeDef FLASH_WaitForLastOperationBank2(uint32_t Timeout);
 127 #endif
 128 /**
 129   * @}
 130   */
 131
 132 /* Exported functions ---------------------------------------------------------*/
 133 /** @defgroup FLASHEx_Exported_Functions FLASHEx Exported Functions
 134   * @{
 135   */
 136
 137 /** @defgroup FLASHEx_Exported_Functions_Group1 Extended Input and Output operation functions
 138   * @brief      I/O operation functions
 139   *
 140 @verbatim
 141  ===============================================================================
 142                       ##### IO operation functions #####
 143  ===============================================================================
 144
 145 @endverbatim
 146   * @{
 147   */
 148
 149
 150 /**
 151   * @brief  Perform a mass erase or erase the specified FLASH memory pages
 152   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
 153   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
 154   * @param[in]  pEraseInit: pointer to an FLASH_EraseInitTypeDef structure that
 155   *         contains the configuration information for the erasing.
 156   *
 157   * @param[out]  PageError: pointer to variable  that
 158   *         contains the configuration information on faulty page in case of error
 159   *         (0xFFFFFFFF means that all the pages have been correctly erased)
 160   *
 161   * @retval HAL_StatusTypeDef HAL Status
 162   */
 163 HAL_StatusTypeDef HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *PageError)
 164 {
 165   HAL_StatusTypeDef status = HAL_ERROR;
 166   uint32_t address = 0;
 167
 168   /* Process Locked */
 169   __HAL_LOCK(&pFlash);
 170
 171   /* Check the parameters */
 172   assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
 173
 174   if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
 175   {
 176 #if  defined(STM32F101xG) || defined(STM32F103xG)
 177     if (pEraseInit->Banks == FLASH_BANK_BOTH)
 178     {
 179       /* Mass Erase requested for Bank1 and Bank2 */
 180       /* Wait for last operation to be completed */
 181       if ((FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK) && \
 182           (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK))
 183       {
 184         /*Mass erase to be done*/
 185         FLASH_MassErase(FLASH_BANK_BOTH);
 186
 187         /* Wait for last operation to be completed */
 188         if ((FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK) && \
 189             (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK))
 190         {
 191           status = HAL_OK;
 192         }
 193
 194         /* If the erase operation is completed, disable the MER Bit */
 195         CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
 196         CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
 197       }
 198     }
 199     else if (pEraseInit->Banks == FLASH_BANK_2)
 200     {
 201       /* Mass Erase requested for Bank2 */
 202       /* Wait for last operation to be completed */
 203       if (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
 204       {
 205         /*Mass erase to be done*/
 206         FLASH_MassErase(FLASH_BANK_2);
 207
 208         /* Wait for last operation to be completed */
 209         status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
 210
 211         /* If the erase operation is completed, disable the MER Bit */
 212         CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
 213       }
 214     }
 215     else
 216 #endif /* STM32F101xG || STM32F103xG */
 217     {
 218       /* Mass Erase requested for Bank1 */
 219       /* Wait for last operation to be completed */
 220       if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
 221       {
 222         /*Mass erase to be done*/
 223         FLASH_MassErase(FLASH_BANK_1);
 224
 225         /* Wait for last operation to be completed */
 226         status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 227
 228         /* If the erase operation is completed, disable the MER Bit */
 229         CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
 230       }
 231     }
 232   }
 233   else
 234   {
 235     /* Page Erase is requested */
 236     /* Check the parameters */
 237     assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
 238     assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
 239
 240 #if  defined(STM32F101xG) || defined(STM32F103xG)
 241     /* Page Erase requested on address located on bank2 */
 242     if(pEraseInit->PageAddress > FLASH_BANK1_END)
 243     {
 244       /* Wait for last operation to be completed */
 245       if (FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
 246       {
 247         /*Initialization of PageError variable*/
 248         *PageError = 0xFFFFFFFF;
 249
 250         /* Erase by page by page to be done*/
 251         for(address = pEraseInit->PageAddress;
 252             address < (pEraseInit->PageAddress + (pEraseInit->NbPages)*FLASH_PAGE_SIZE);
 253             address += FLASH_PAGE_SIZE)
 254         {
 255           FLASH_PageErase(address);
 256
 257           /* Wait for last operation to be completed */
 258           status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
 259
 260           /* If the erase operation is completed, disable the PER Bit */
 261           CLEAR_BIT(FLASH->CR2, FLASH_CR2_PER);
 262
 263           if (status != HAL_OK)
 264           {
 265             /* In case of error, stop erase procedure and return the faulty address */
 266             *PageError = address;
 267             break;
 268           }
 269         }
 270       }
 271     }
 272     else
 273 #endif /* STM32F101xG || STM32F103xG */
 274     {
 275       /* Page Erase requested on address located on bank1 */
 276       /* Wait for last operation to be completed */
 277       if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
 278       {
 279         if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
 280         {
 281           /*Mass erase to be done*/
 282           FLASH_MassErase(pEraseInit->Banks);
 283
 284           /* Wait for last operation to be completed */
 285           status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 286
 287           /* If the erase operation is completed, disable the MER Bit */
 288           CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
 289         }
 290         else
 291         {
 292           /*Initialization of PageError variable*/
 293           *PageError = 0xFFFFFFFF;
 294
 295           /* Erase by page by page to be done*/
 296           for(address = pEraseInit->PageAddress;
 297               address < (pEraseInit->PageAddress + (pEraseInit->NbPages)*FLASH_PAGE_SIZE);
 298               address += FLASH_PAGE_SIZE)
 299           {
 300             FLASH_PageErase(address);
 301
 302             /* Wait for last operation to be completed */
 303             status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 304
 305             /* If the erase operation is completed, disable the PER Bit */
 306             CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
 307
 308             if (status != HAL_OK)
 309             {
 310               /* In case of error, stop erase procedure and return the faulty address */
 311               *PageError = address;
 312               break;
 313             }
 314           }
 315         }
 316       }
 317     }
 318   }
 319
 320   /* Process Unlocked */
 321   __HAL_UNLOCK(&pFlash);
 322
 323   return status;
 324 }
 325
 326 /**
 327   * @brief  Perform a mass erase or erase the specified FLASH memory sectors with interrupt enabled
 328   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
 329   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
 330   * @param  pEraseInit: pointer to an FLASH_EraseInitTypeDef structure that
 331   *         contains the configuration information for the erasing.
 332   *
 333   * @retval HAL_StatusTypeDef HAL Status
 334   */
 335 HAL_StatusTypeDef HAL_FLASHEx_Erase_IT(FLASH_EraseInitTypeDef *pEraseInit)
 336 {
 337   HAL_StatusTypeDef status = HAL_OK;
 338
 339   /* Process Locked */
 340   __HAL_LOCK(&pFlash);
 341
 342   /* If procedure already ongoing, reject the next one */
 343   if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
 344   {
 345     return HAL_ERROR;
 346   }
 347
 348   /* Check the parameters */
 349   assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
 350
 351   /* Enable End of FLASH Operation and Error source interrupts */
 352   __HAL_FLASH_ENABLE_IT((FLASH_IT_EOP | FLASH_IT_ERR));
 353
 354 #if  defined(STM32F101xG) || defined(STM32F103xG)
 355   /* Enable End of FLASH Operation and Error source interrupts */
 356   __HAL_FLASH_ENABLE_IT((FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2));
 357 #endif
 358
 359   if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
 360   {
 361     /*Mass erase to be done*/
 362     pFlash.ProcedureOnGoing = FLASH_PROC_MASSERASE;
 363     FLASH_MassErase(pEraseInit->Banks);
 364   }
 365   else
 366   {
 367     /* Erase by page to be done*/
 368
 369     /* Check the parameters */
 370     assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
 371     assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
 372
 373     pFlash.ProcedureOnGoing = FLASH_PROC_PAGEERASE;
 374     pFlash.DataRemaining = pEraseInit->NbPages;
 375     pFlash.Address = pEraseInit->PageAddress;
 376
 377     /*Erase 1st page and wait for IT*/
 378     FLASH_PageErase(pEraseInit->PageAddress);
 379   }
 380
 381   return status;
 382 }
 383
 384 /**
 385   * @}
 386   */
 387
 388 /** @defgroup FLASHEx_Exported_Functions_Group2 Extended Peripheral Control functions
 389   * @brief      Peripheral Control functions
 390   *
 391 @verbatim
 392  ===============================================================================
 393                       ##### Peripheral Control functions #####
 394  ===============================================================================
 395     [..]
 396     This subsection provides a set of functions allowing to control the FLASH
 397     memory operations.
 398
 399 @endverbatim
 400   * @{
 401   */
 402
 403 /**
 404   * @brief  Erases the FLASH option bytes.
 405   * @note   This functions erases all option bytes except the Read protection (RDP).
 406   *         The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
 407   *         The function HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
 408   *         The function HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
 409   *         (system reset will occur)
 410   * @retval HAL status
 411   */
 412
 413 HAL_StatusTypeDef HAL_FLASHEx_OBErase(void)
 414 {
 415   uint8_t rdptmp = OB_RDP_LEVEL_0;
 416   HAL_StatusTypeDef status = HAL_ERROR;
 417
 418   /* Get the actual read protection Option Byte value */
 419   if(FLASH_OB_GetRDP() != RESET)
 420   {
 421     rdptmp = OB_RDP_LEVEL_1;
 422   }
 423
 424   /* Wait for last operation to be completed */
 425   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 426
 427   if(status == HAL_OK)
 428   {
 429     /* Clean the error context */
 430     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 431
 432     /* If the previous operation is completed, proceed to erase the option bytes */
 433     SET_BIT(FLASH->CR, FLASH_CR_OPTER);
 434     SET_BIT(FLASH->CR, FLASH_CR_STRT);
 435
 436     /* Wait for last operation to be completed */
 437     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 438
 439     /* If the erase operation is completed, disable the OPTER Bit */
 440     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTER);
 441
 442     if(status == HAL_OK)
 443     {
 444       /* Restore the last read protection Option Byte value */
 445       status = FLASH_OB_RDP_LevelConfig(rdptmp);
 446     }
 447   }
 448
 449   /* Return the erase status */
 450   return status;
 451 }
 452
 453 /**
 454   * @brief  Program option bytes
 455   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
 456   *         The function HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
 457   *         The function HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
 458   *         (system reset will occur)
 459   *
 460   * @param  pOBInit: pointer to an FLASH_OBInitStruct structure that
 461   *         contains the configuration information for the programming.
 462   *
 463   * @retval HAL_StatusTypeDef HAL Status
 464   */
 465 HAL_StatusTypeDef HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit)
 466 {
 467   HAL_StatusTypeDef status = HAL_ERROR;
 468
 469   /* Check the parameters */
 470   assert_param(IS_OPTIONBYTE(pOBInit->OptionType));
 471
 472   /* Write protection configuration */
 473   if((pOBInit->OptionType & OPTIONBYTE_WRP) == OPTIONBYTE_WRP)
 474   {
 475     assert_param(IS_WRPSTATE(pOBInit->WRPState));
 476     if (pOBInit->WRPState == OB_WRPSTATE_ENABLE)
 477     {
 478       /* Enable of Write protection on the selected page */
 479       status = FLASH_OB_EnableWRP(pOBInit->WRPPage);
 480     }
 481     else
 482     {
 483       /* Disable of Write protection on the selected page */
 484       status = FLASH_OB_DisableWRP(pOBInit->WRPPage);
 485     }
 486   }
 487
 488   /* Read protection configuration */
 489   if((pOBInit->OptionType & OPTIONBYTE_RDP) == OPTIONBYTE_RDP)
 490   {
 491     status = FLASH_OB_RDP_LevelConfig(pOBInit->RDPLevel);
 492   }
 493
 494   /* USER configuration */
 495   if((pOBInit->OptionType & OPTIONBYTE_USER) == OPTIONBYTE_USER)
 496   {
 497     status = FLASH_OB_UserConfig(pOBInit->USERConfig);
 498   }
 499
 500   /* DATA configuration*/
 501   if((pOBInit->OptionType & OPTIONBYTE_DATA) == OPTIONBYTE_DATA)
 502   {
 503     status = FLASH_OB_ProgramData(pOBInit->DATAAddress, pOBInit->DATAData);
 504   }
 505
 506   return status;
 507 }
 508
 509 /**
 510   * @brief  Get the Option byte configuration
 511   * @param  pOBInit: pointer to an FLASH_OBInitStruct structure that
 512   *         contains the configuration information for the programming.
 513   *
 514   * @retval None
 515   */
 516 void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
 517 {
 518   pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER;
 519
 520   /*Get WRP*/
 521   pOBInit->WRPPage = FLASH_OB_GetWRP();
 522
 523   /*Get RDP Level*/
 524   pOBInit->RDPLevel = FLASH_OB_GetRDP();
 525
 526   /*Get USER*/
 527   pOBInit->USERConfig = FLASH_OB_GetUser();
 528 }
 529
 530 /**
 531   * @}
 532   */
 533
 534 /**
 535   * @}
 536   */
 537
 538 /** @addtogroup FLASHEx_Private_Functions
 539  * @{
 540  */
 541
 542 /**
 543   * @brief  Full erase of FLASH memory Bank
 544   * @param  Banks: Banks to be erased
 545   *          This parameter can be one of the following values:
 546   *            @arg FLASH_BANK_1: Bank1 to be erased
 547   *            @arg FLASH_BANK_2: Bank2 to be erased
 548   *            @arg FLASH_BANK_BOTH: Bank1 and Bank2 to be erased
 549   *
 550   * @retval HAL Status
 551   */
 552 static void FLASH_MassErase(uint32_t Banks)
 553 {
 554   /* Check the parameters */
 555   assert_param(IS_FLASH_BANK(Banks));
 556
 557   /* Clean the error context */
 558   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 559
 560 #if  defined(STM32F101xG) || defined(STM32F103xG)
 561   if(Banks == FLASH_BANK_BOTH)
 562   {
 563     /* bank1 & bank2 will be erased*/
 564     SET_BIT(FLASH->CR, FLASH_CR_MER);
 565     SET_BIT(FLASH->CR2, FLASH_CR2_MER);
 566     SET_BIT(FLASH->CR, FLASH_CR_STRT);
 567     SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
 568   }
 569   else if(Banks == FLASH_BANK_2)
 570   {
 571     /*Only bank2 will be erased*/
 572     SET_BIT(FLASH->CR2, FLASH_CR2_MER);
 573     SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
 574   }
 575   else
 576   {
 577 #endif /* STM32F101xG || STM32F103xG */
 578     /*Only bank1 will be erased*/
 579     SET_BIT(FLASH->CR, FLASH_CR_MER);
 580     SET_BIT(FLASH->CR, FLASH_CR_STRT);
 581 #if  defined(STM32F101xG) || defined(STM32F103xG)
 582   }
 583 #endif /* STM32F101xG || STM32F103xG */
 584 }
 585
 586 /**
 587   * @brief  Enable the write protection of the desired pages
 588   * @note   When the memory read protection level is selected (RDP level = 1),
 589   *         it is not possible to program or erase the flash page i if CortexM4
 590   *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1
 591   *
 592   * @param  WriteProtectPage: specifies the page(s) to be write protected.
 593   *         The value of this parameter depend on device used within the same series
 594   * @retval HAL status
 595   */
 596 static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage)
 597 {
 598   HAL_StatusTypeDef status = HAL_OK;
 599   uint16_t WRP0_Data = 0xFFFF;
 600 #if defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB) || \
 601     defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 602     defined(STM32F101xG) || defined(STM32F103xG) || \
 603     defined(STM32F105xC) || defined(STM32F107xC)
 604   uint16_t WRP1_Data = 0xFFFF, WRP2_Data = 0xFFFF, WRP3_Data = 0xFFFF;
 605 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB || */
 606        /* STM32F100xE || STM32F101xE || STM32F103xE || */
 607        /* STM32F101xG || STM32F103xG || */
 608        /* STM32F105xC || STM32F107xC */
 609
 610   /* Check the parameters */
 611   assert_param(IS_OB_WRP(WriteProtectPage));
 612
 613   WriteProtectPage = (uint32_t)(~WriteProtectPage);
 614
 615   /* Low Density and Medium Density */
 616 #if  defined(STM32F101x6) || defined(STM32F102x6) || defined(STM32F103x6) || \
 617      defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB)
 618   WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
 619 #endif /* STM32F101x6 || STM32F102x6 || STM32F103x6 || */
 620        /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB */
 621
 622 /* Medium Density */
 623 #if  defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB)
 624   WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8);
 625   WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES64TO95MASK) >> 16);
 626   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES96TO127MASK) >> 24);
 627 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB */
 628
 629 /* High Density, XL Density and  Connectivity line devices*/
 630 #if  defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 631      defined(STM32F101xG) || defined(STM32F103xG) || \
 632      defined(STM32F105xC) || defined(STM32F107xC)
 633   WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
 634   WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8);
 635   WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
 636 #endif /* STM32F100xE || STM32F101xE || STM32F103xE */
 637        /* STM32F101xG || STM32F103xG */
 638        /* STM32F105xC || STM32F107xC */
 639
 640 /* High Density */
 641 #if  defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE)
 642   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO255MASK) >> 24);
 643 #endif /* STM32F100xE || STM32F101xE || STM32F103xE */
 644
 645 /* XL Density */
 646 #if  defined(STM32F101xG) || defined(STM32F103xG)
 647   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO511MASK) >> 24);
 648 #endif /* STM32F101xG || STM32F103xG */
 649
 650 /* Connectivity line devices */
 651 #if defined(STM32F105xC) || defined(STM32F107xC)
 652   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24);
 653 #endif /* STM32F105xC || STM32F107xC */
 654
 655   /* Wait for last operation to be completed */
 656   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 657
 658   if(status == HAL_OK)
 659   {
 660     /* Clean the error context */
 661     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 662
 663     SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
 664
 665     if(WRP0_Data != 0xFF)
 666     {
 667       OB->WRP0 &= WRP0_Data;
 668
 669       /* Wait for last operation to be completed */
 670       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 671     }
 672
 673 #if defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB) || \
 674     defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 675     defined(STM32F101xG) || defined(STM32F103xG) || \
 676     defined(STM32F105xC) || defined(STM32F107xC)
 677
 678     if((status == HAL_OK) && (WRP1_Data != 0xFF))
 679     {
 680       OB->WRP1 &= WRP1_Data;
 681
 682       /* Wait for last operation to be completed */
 683       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 684     }
 685
 686     if((status == HAL_OK) && (WRP2_Data != 0xFF))
 687     {
 688       OB->WRP2 &= WRP2_Data;
 689
 690       /* Wait for last operation to be completed */
 691       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 692     }
 693
 694     if((status == HAL_OK) && (WRP3_Data != 0xFF))
 695     {
 696       OB->WRP3 &= WRP3_Data;
 697
 698       /* Wait for last operation to be completed */
 699       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 700     }
 701 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB || */
 702        /* STM32F100xE || STM32F101xE || STM32F103xE || */
 703        /* STM32F101xG || STM32F103xG || */
 704        /* STM32F105xC || STM32F107xC */
 705
 706     /* if the program operation is completed, disable the OPTPG Bit */
 707     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
 708   }
 709
 710   return status;
 711 }
 712
 713 /**
 714   * @brief  Disable the write protection of the desired pages
 715   * @note   When the memory read protection level is selected (RDP level = 1),
 716   *         it is not possible to program or erase the flash page i if CortexM4
 717   *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1
 718   *
 719   * @param  WriteProtectPage: specifies the page(s) to be write unprotected.
 720   *         The value of this parameter depend on device used within the same series
 721   * @retval HAL status
 722   */
 723 static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage)
 724 {
 725   HAL_StatusTypeDef status = HAL_OK;
 726   uint16_t WRP0_Data = 0xFFFF;
 727 #if defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB) || \
 728     defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 729     defined(STM32F101xG) || defined(STM32F103xG) || \
 730     defined(STM32F105xC) || defined(STM32F107xC)
 731   uint16_t WRP1_Data = 0xFFFF, WRP2_Data = 0xFFFF, WRP3_Data = 0xFFFF;
 732 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB || */
 733        /* STM32F100xE || STM32F101xE || STM32F103xE || */
 734        /* STM32F101xG || STM32F103xG || */
 735        /* STM32F105xC || STM32F107xC */
 736
 737   /* Check the parameters */
 738   assert_param(IS_OB_WRP(WriteProtectPage));
 739
 740   /* Low Density and Medium Density */
 741 #if  defined(STM32F101x6) || defined(STM32F102x6) || defined(STM32F103x6) || \
 742      defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB)
 743   WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
 744 #endif /* STM32F101x6 || STM32F102x6 || STM32F103x6 || */
 745        /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB */
 746
 747 /* Medium Density */
 748 #if  defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB)
 749   WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8);
 750   WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES64TO95MASK) >> 16);
 751   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES96TO127MASK) >> 24);
 752 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB */
 753
 754 /* High Density, XL Density and  Connectivity line devices*/
 755 #if  defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 756      defined(STM32F101xG) || defined(STM32F103xG) || \
 757      defined(STM32F105xC) || defined(STM32F107xC)
 758   WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
 759   WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8);
 760   WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16);
 761 #endif /* STM32F100xE || STM32F101xE || STM32F103xE */
 762        /* STM32F101xG || STM32F103xG */
 763        /* STM32F105xC || STM32F107xC */
 764
 765 /* High Density */
 766 #if  defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE)
 767   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO255MASK) >> 24);
 768 #endif /* STM32F100xE || STM32F101xE || STM32F103xE */
 769
 770 /* XL Density */
 771 #if  defined(STM32F101xG) || defined(STM32F103xG)
 772   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO511MASK) >> 24);
 773 #endif /* STM32F101xG || STM32F103xG */
 774
 775 /* Connectivity line devices */
 776 #if defined(STM32F105xC) || defined(STM32F107xC)
 777   WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24);
 778 #endif /* STM32F105xC || STM32F107xC */
 779
 780   /* Wait for last operation to be completed */
 781   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 782
 783   if(status == HAL_OK)
 784   {
 785     /* Clean the error context */
 786     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 787
 788     SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
 789
 790     if(WRP0_Data != 0xFF)
 791     {
 792       OB->WRP0 |= WRP0_Data;
 793
 794       /* Wait for last operation to be completed */
 795       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 796     }
 797 #if defined(STM32F100xB) || defined(STM32F101xB) || defined(STM32F102xB) || defined(STM32F103xB) || \
 798     defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F103xE) || \
 799     defined(STM32F101xG) || defined(STM32F103xG) || \
 800     defined(STM32F105xC) || defined(STM32F107xC)
 801
 802     if((status == HAL_OK) && (WRP1_Data != 0xFF))
 803     {
 804       OB->WRP1 |= WRP1_Data;
 805
 806       /* Wait for last operation to be completed */
 807       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 808     }
 809
 810     if((status == HAL_OK) && (WRP2_Data != 0xFF))
 811     {
 812       OB->WRP2 |= WRP2_Data;
 813
 814       /* Wait for last operation to be completed */
 815       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 816     }
 817
 818     if((status == HAL_OK) && (WRP3_Data != 0xFF))
 819     {
 820       OB->WRP3 |= WRP3_Data;
 821
 822       /* Wait for last operation to be completed */
 823       status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 824     }
 825 #endif /* STM32F100xB || STM32F101xB || STM32F102xB || STM32F103xB ||*/
 826        /* STM32F100xE || STM32F101xE || STM32F103xE ||*/
 827        /* STM32F101xG || STM32F103xG ||*/
 828        /* STM32F105xC || STM32F107xC */
 829
 830     /* if the program operation is completed, disable the OPTPG Bit */
 831     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
 832   }
 833   return status;
 834 }
 835
 836 /**
 837   * @brief  Set the read protection level.
 838   * @param  ReadProtectLevel: specifies the read protection level.
 839   *         This parameter can be one of the following values:
 840   *            @arg OB_RDP_LEVEL_0: No protection
 841   *            @arg OB_RDP_LEVEL_1: Read protection of the memory
 842   *
 843   * @retval HAL status
 844   */
 845 static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel)
 846 {
 847   HAL_StatusTypeDef status = HAL_OK;
 848
 849   /* Check the parameters */
 850   assert_param(IS_OB_RDP_LEVEL(ReadProtectLevel));
 851
 852   /* Wait for last operation to be completed */
 853   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 854
 855   if(status == HAL_OK)
 856   {
 857     /* Clean the error context */
 858     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 859
 860     /* Enable the Option Bytes Programming operation */
 861     SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
 862
 863     WRITE_REG(OB->RDP, ReadProtectLevel);
 864
 865     /* Wait for last operation to be completed */
 866     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 867
 868     /* if the program operation is completed, disable the OPTPG Bit */
 869     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
 870   }
 871
 872   return status;
 873 }
 874
 875 /**
 876   * @brief  Program the FLASH User Option Byte.
 877   * @note   Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
 878   * @param  UserConfig: The FLASH User Option Bytes values: FLASH_OBR_IWDG_SW(Bit2),
 879   *         FLASH_OBR_nRST_STOP(Bit3),FLASH_OBR_nRST_STDBY(Bit4).
 880   *         And BFBF2(Bit5) for STM32F101xG and STM32F103xG .
 881   * @retval HAL status
 882   */
 883 static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig)
 884 {
 885   HAL_StatusTypeDef status = HAL_OK;
 886
 887   /* Check the parameters */
 888   assert_param(IS_OB_IWDG_SOURCE((UserConfig&OB_IWDG_SW)));
 889   assert_param(IS_OB_STOP_SOURCE((UserConfig&OB_STOP_NO_RST)));
 890   assert_param(IS_OB_STDBY_SOURCE((UserConfig&OB_STDBY_NO_RST)));
 891 #if  defined(STM32F101xG) || defined(STM32F103xG)
 892   assert_param(IS_OB_BOOT1((UserConfig&OB_BOOT1_SET)));
 893 #endif /* STM32F101xG || STM32F103xG */
 894
 895   /* Wait for last operation to be completed */
 896   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 897
 898   if(status == HAL_OK)
 899   {
 900     /* Clean the error context */
 901     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 902
 903     /* Enable the Option Bytes Programming operation */
 904     SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
 905
 906 #if  defined(STM32F101xG) || defined(STM32F103xG)
 907     OB->USER = (UserConfig | 0xF0);
 908 #else
 909     OB->USER = (UserConfig | 0xF8);
 910 #endif /* STM32F101xG || STM32F103xG */
 911
 912     /* Wait for last operation to be completed */
 913     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 914
 915     /* if the program operation is completed, disable the OPTPG Bit */
 916     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
 917   }
 918
 919   return status;
 920 }
 921
 922 /**
 923   * @brief  Programs a half word at a specified Option Byte Data address.
 924   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
 925   *         The function HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
 926   *         The function HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
 927   *         (system reset will occur)
 928   *         Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
 929   * @param  Address: specifies the address to be programmed.
 930   *         This parameter can be 0x1FFFF804 or 0x1FFFF806.
 931   * @param  Data: specifies the data to be programmed.
 932   * @retval HAL status
 933   */
 934 static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data)
 935 {
 936   HAL_StatusTypeDef status = HAL_ERROR;
 937
 938   /* Check the parameters */
 939   assert_param(IS_OB_DATA_ADDRESS(Address));
 940
 941   /* Wait for last operation to be completed */
 942   status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 943
 944   if(status == HAL_OK)
 945   {
 946     /* Clean the error context */
 947     pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
 948
 949     /* Enables the Option Bytes Programming operation */
 950     SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
 951     *(__IO uint16_t*)Address = Data;
 952
 953     /* Wait for last operation to be completed */
 954     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
 955
 956     /* If the program operation is completed, disable the OPTPG Bit */
 957     CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
 958   }
 959   /* Return the Option Byte Data Program Status */
 960   return status;
 961 }
 962
 963 /**
 964   * @brief  Return the FLASH Write Protection Option Bytes value.
 965   * @retval The FLASH Write Protection Option Bytes value
 966   */
 967 static uint32_t FLASH_OB_GetWRP(void)
 968 {
 969   /* Return the FLASH write protection Register value */
 970   return (uint32_t)(READ_REG(FLASH->WRPR));
 971 }
 972
 973 /**
 974   * @brief  Returns the FLASH Read Protection level.
 975   * @retval FLASH ReadOut Protection Status:
 976   *           - SET, when OB_RDP_LEVEL_1 is set
 977   *           - RESET, when OB_RDP_LEVEL_0 is set
 978   */
 979 static FlagStatus FLASH_OB_GetRDP(void)
 980 {
 981   FlagStatus readstatus = RESET;
 982
 983   if (HAL_IS_BIT_SET(FLASH->OBR, FLASH_OBR_RDPRT))
 984   {
 985     readstatus = SET;
 986   }
 987   else
 988   {
 989     readstatus = RESET;
 990   }
 991   return readstatus;
 992 }
 993
 994 /**
 995   * @brief  Return the FLASH User Option Byte value.
 996   * @retval The FLASH User Option Bytes values: FLASH_OBR_IWDG_SW(Bit2),
 997   *         FLASH_OBR_nRST_STOP(Bit3),FLASH_OBR_nRST_STDBY(Bit4).
 998   *         And FLASH_OBR_BFB2(Bit5) for STM32F101xG and STM32F103xG .
 999   */
1000 static uint8_t FLASH_OB_GetUser(void)
1001 {
1002   /* Return the User Option Byte */
1003   return (uint8_t)((READ_REG(FLASH->OBR) & FLASH_OBR_USER) >> 2);
1004 }
1005
1006 #if  defined(STM32F101xG) || defined(STM32F103xG)
1007 /**
1008   * @brief  Wait for a FLASH BANK2 operation to complete.
1009   * @param  Timeout: maximum flash operationtimeout
1010   * @retval HAL_StatusTypeDef HAL Status
1011   */
1012 static HAL_StatusTypeDef FLASH_WaitForLastOperationBank2(uint32_t Timeout)
1013 {
1014   /* Wait for the FLASH BANK2 operation to complete by polling on BUSY flag to be reset.
1015      Even if the FLASH BANK2 operation fails, the BUSY flag will be reset and an error
1016      flag will be set */
1017
1018   uint32_t tickstart = HAL_GetTick();
1019
1020   while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY_BANK2))
1021   {
1022     if (Timeout != HAL_MAX_DELAY)
1023     {
1024       if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
1025       {
1026         return HAL_TIMEOUT;
1027       }
1028     }
1029   }
1030
1031   /* Check FLASH End of Operation flag  */
1032   if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK2))
1033   {
1034     /* Clear FLASH End of Operation pending bit */
1035     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
1036   }
1037
1038   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
1039   {
1040     /*Save the error code*/
1041     FLASH_SetErrorCode();
1042     return HAL_ERROR;
1043   }
1044
1045   /* If there is an error flag set */
1046   return HAL_OK;
1047
1048 }
1049 #endif /* STM32F101xG || STM32F103xG */
1050
1051 /**
1052   * @}
1053   */
1054
1055 /**
1056   * @}
1057   */
1058
1059 /** @addtogroup FLASH
1060   * @{
1061   */
1062
1063 #if  defined(STM32F101xG) || defined(STM32F103xG)
1064 /** @addtogroup FLASH_Exported_Functions
1065   * @{
1066   */
1067
1068 /** @addtogroup FLASH_Exported_Functions_Group2
1069   * @{
1070   */
1071
1072 /**
1073   * @brief  Unlock the FLASH control register access
1074   * @retval HAL Status
1075   */
1076 HAL_StatusTypeDef HAL_FLASH_Unlock(void)
1077 {
1078   if (HAL_IS_BIT_SET(FLASH->CR, FLASH_CR_LOCK))
1079   {
1080     /* Authorize the FLASH BANK1 Registers access */
1081     WRITE_REG(FLASH->KEYR, FLASH_KEY1);
1082     WRITE_REG(FLASH->KEYR, FLASH_KEY2);
1083   }
1084   else
1085   {
1086     return HAL_ERROR;
1087   }
1088
1089
1090   if (HAL_IS_BIT_SET(FLASH->CR2, FLASH_CR2_LOCK))
1091   {
1092     /* Authorize the FLASH BANK2 Registers access */
1093     WRITE_REG(FLASH->KEYR2, FLASH_KEY1);
1094     WRITE_REG(FLASH->KEYR2, FLASH_KEY2);
1095   }
1096   else
1097   {
1098     return HAL_ERROR;
1099   }
1100
1101   return HAL_OK;
1102 }
1103
1104 /**
1105   * @brief  Locks the FLASH control register access
1106   * @retval HAL Status
1107   */
1108 HAL_StatusTypeDef HAL_FLASH_Lock(void)
1109 {
1110   /* Set the LOCK Bit to lock the FLASH BANK1 Registers access */
1111   SET_BIT(FLASH->CR, FLASH_CR_LOCK);
1112
1113   /* Set the LOCK Bit to lock the FLASH BANK2 Registers access */
1114   SET_BIT(FLASH->CR2, FLASH_CR2_LOCK);
1115
1116   return HAL_OK;
1117 }
1118 /**
1119   * @}
1120   */
1121
1122 /** @addtogroup FLASH_Exported_Functions_Group1
1123   * @{
1124   */
1125
1126 /**
1127   * @brief  Program halfword, word or double word at a specified address
1128   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
1129   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
1130   *
1131   * @note   If an erase and a program operations are requested simultaneously,
1132   *         the erase operation is performed before the program one.
1133   *
1134   * @note   FLASH should be previously erased before new programmation (only exception to this
1135   *         is when 0x0000 is programmed)
1136   *
1137   * @param  TypeProgram:  Indicate the way to program at a specified address.
1138   *                       This parameter can be a value of @ref FLASH_Type_Program
1139   * @param  Address:      Specifies the address to be programmed.
1140   * @param  Data:         Specifies the data to be programmed
1141   *
1142   * @retval HAL_StatusTypeDef HAL Status
1143   */
1144 HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
1145 {
1146   HAL_StatusTypeDef status = HAL_ERROR;
1147   uint8_t index = 0;
1148   uint8_t nbiterations = 0;
1149
1150   /* Process Locked */
1151   __HAL_LOCK(&pFlash);
1152
1153   /* Check the parameters */
1154   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
1155   assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
1156
1157   if(Address <= FLASH_BANK1_END)
1158   {
1159     /* Wait for last operation to be completed */
1160     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
1161   }
1162   else
1163   {
1164     /* Wait for last operation to be completed */
1165     status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
1166   }
1167
1168   if(status == HAL_OK)
1169   {
1170     if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
1171     {
1172       /* Program halfword (16-bit) at a specified address. */
1173       nbiterations = 1;
1174     }
1175     else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
1176     {
1177       /* Program word (32-bit = 2*16-bit) at a specified address. */
1178       nbiterations = 2;
1179     }
1180     else
1181     {
1182       /* Program double word (64-bit = 4*16-bit) at a specified address. */
1183       nbiterations = 4;
1184     }
1185
1186     for (index = 0; index < nbiterations; index++)
1187     {
1188       FLASH_Program_HalfWord((Address + (2*index)), (uint16_t)(Data >> (16*index)));
1189
1190       if(Address <= FLASH_BANK1_END)
1191       {
1192         /* Wait for last operation to be completed */
1193         status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
1194
1195         /* If the program operation is completed, disable the PG Bit */
1196         CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
1197       }
1198       else
1199       {
1200         /* Wait for last operation to be completed */
1201         status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
1202
1203         /* If the program operation is completed, disable the PG Bit */
1204         CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
1205       }
1206       /* In case of error, stop programation procedure */
1207       if (status != HAL_OK)
1208       {
1209         break;
1210       }
1211     }
1212   }
1213
1214   /* Process Unlocked */
1215   __HAL_UNLOCK(&pFlash);
1216
1217   return status;
1218 }
1219
1220 /**
1221   * @brief  Program halfword, word or double word at a specified address  with interrupt enabled.
1222   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
1223   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
1224   *
1225   * @note   If an erase and a program operations are requested simultaneously,
1226   *         the erase operation is performed before the program one.
1227   *
1228   * @param  TypeProgram: Indicate the way to program at a specified address.
1229   *                      This parameter can be a value of @ref FLASH_Type_Program
1230   * @param  Address:     Specifies the address to be programmed.
1231   * @param  Data:        Specifies the data to be programmed
1232   *
1233   * @retval HAL_StatusTypeDef HAL Status
1234   */
1235 HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
1236 {
1237   HAL_StatusTypeDef status = HAL_OK;
1238
1239   /* Process Locked */
1240   __HAL_LOCK(&pFlash);
1241
1242   /* If procedure already ongoing, reject the next one */
1243   if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
1244   {
1245     return HAL_ERROR;
1246   }
1247
1248   /* Check the parameters */
1249   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
1250   assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
1251
1252   if(Address <= FLASH_BANK1_END)
1253   {
1254     /* Enable End of FLASH Operation and Error source interrupts */
1255     __HAL_FLASH_ENABLE_IT((FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1));
1256   }else
1257   {
1258     /* Enable End of FLASH Operation and Error source interrupts */
1259     __HAL_FLASH_ENABLE_IT((FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2));
1260   }
1261
1262   pFlash.Address = Address;
1263   pFlash.Data = Data;
1264
1265   if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
1266   {
1267     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
1268     /*Program halfword (16-bit) at a specified address.*/
1269     pFlash.DataRemaining = 1;
1270   }
1271   else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
1272   {
1273     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
1274     /*Program word (32-bit : 2*16-bit) at a specified address.*/
1275     pFlash.DataRemaining = 2;
1276   }
1277   else
1278   {
1279     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
1280     /*Program double word (64-bit : 4*16-bit) at a specified address.*/
1281     pFlash.DataRemaining = 4;
1282   }
1283
1284   /*Program halfword (16-bit) at a specified address.*/
1285   FLASH_Program_HalfWord(Address, (uint16_t)Data);
1286
1287   return status;
1288 }
1289
1290 /**
1291   * @brief This function handles FLASH interrupt request.
1292   * @retval None
1293   */
1294 void HAL_FLASH_IRQHandler(void)
1295 {
1296   uint32_t addresstmp = 0;
1297
1298   /* Check FLASH operation error flags */
1299   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK1) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK1) || \
1300     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2)))
1301   {
1302     /*Save the Error code*/
1303     FLASH_SetErrorCode();
1304
1305     /* FLASH error interrupt user callback */
1306     HAL_FLASH_OperationErrorCallback(pFlash.Address);
1307
1308     /* Reset address and stop the procedure ongoing*/
1309     pFlash.Address = 0xFFFFFFFF;
1310     pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1311   }
1312
1313   /* Check FLASH End of Operation flag  */
1314   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK1))
1315   {
1316     /* Clear FLASH End of Operation pending bit */
1317     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK1);
1318
1319     /* Process can continue only if no error detected */
1320     if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
1321     {
1322       if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
1323       {
1324         /* Nb of pages to erased can be decreased */
1325         pFlash.DataRemaining--;
1326
1327         /* Indicate user which page address has been erased*/
1328         HAL_FLASH_EndOfOperationCallback(pFlash.Address);
1329
1330         /* Check if there are still pages to erase*/
1331         if(pFlash.DataRemaining != 0)
1332         {
1333           /* Increment page address to next page */
1334           pFlash.Address += FLASH_PAGE_SIZE;
1335           addresstmp = pFlash.Address;
1336
1337           /* Operation is completed, disable the PER Bit */
1338           CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
1339
1340           FLASH_PageErase(addresstmp);
1341         }
1342         else
1343         {
1344           /*No more pages to Erase*/
1345
1346           /*Reset Address and stop Erase pages procedure*/
1347           pFlash.Address = 0xFFFFFFFF;
1348           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1349         }
1350       }
1351       else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
1352       {
1353         /* Operation is completed, disable the MER Bit */
1354         CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
1355
1356         /* Stop Mass Erase procedure if no pending mass erase on other bank */
1357         if (HAL_IS_BIT_CLR(FLASH->CR2, FLASH_CR2_MER))
1358         {
1359           /* MassErase ended. Return the selected bank*/
1360           /* FLASH EOP interrupt user callback */
1361           HAL_FLASH_EndOfOperationCallback(0);
1362
1363           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1364         }
1365       }
1366       else
1367       {
1368         /* Nb of 16-bit data to program can be decreased */
1369         pFlash.DataRemaining--;
1370
1371         /* Check if there are still 16-bit data to program */
1372         if(pFlash.DataRemaining != 0)
1373         {
1374           /* Increment address to 16-bit */
1375           pFlash.Address += 2;
1376           addresstmp = pFlash.Address;
1377
1378           /* Shift to have next 16-bit data */
1379           pFlash.Data = (pFlash.Data >> 16);
1380
1381           /* Operation is completed, disable the PG Bit */
1382           CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
1383
1384           /*Program halfword (16-bit) at a specified address.*/
1385           FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
1386         }
1387         else
1388         {
1389           /*Program ended. Return the selected address*/
1390           /* FLASH EOP interrupt user callback */
1391           if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
1392           {
1393             HAL_FLASH_EndOfOperationCallback(pFlash.Address);
1394           }
1395           else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
1396           {
1397             HAL_FLASH_EndOfOperationCallback(pFlash.Address - 2);
1398           }
1399           else
1400           {
1401             HAL_FLASH_EndOfOperationCallback(pFlash.Address - 6);
1402           }
1403
1404           /* Reset Address and stop Program procedure*/
1405           pFlash.Address = 0xFFFFFFFF;
1406           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1407         }
1408       }
1409     }
1410   }
1411
1412   /* Check FLASH End of Operation flag  */
1413   if(__HAL_FLASH_GET_FLAG( FLASH_FLAG_EOP_BANK2))
1414   {
1415     /* Clear FLASH End of Operation pending bit */
1416     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
1417
1418     /* Process can continue only if no error detected */
1419     if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
1420     {
1421       if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
1422       {
1423         /* Nb of pages to erased can be decreased */
1424         pFlash.DataRemaining--;
1425
1426         /* Indicate user which page address has been erased*/
1427         HAL_FLASH_EndOfOperationCallback(pFlash.Address);
1428
1429         /* Check if there are still pages to erase*/
1430         if(pFlash.DataRemaining != 0)
1431         {
1432           /* Increment page address to next page */
1433           pFlash.Address += FLASH_PAGE_SIZE;
1434           addresstmp = pFlash.Address;
1435
1436           /* Operation is completed, disable the PER Bit */
1437           CLEAR_BIT(FLASH->CR2, FLASH_CR2_PER);
1438
1439           FLASH_PageErase(addresstmp);
1440         }
1441         else
1442         {
1443           /*No more pages to Erase*/
1444
1445           /*Reset Address and stop Erase pages procedure*/
1446           pFlash.Address = 0xFFFFFFFF;
1447           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1448         }
1449       }
1450       else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
1451       {
1452         /* Operation is completed, disable the MER Bit */
1453         CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
1454
1455         if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_MER))
1456         {
1457           /* MassErase ended. Return the selected bank*/
1458           /* FLASH EOP interrupt user callback */
1459           HAL_FLASH_EndOfOperationCallback(0);
1460
1461           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1462         }
1463       }
1464       else
1465       {
1466         /* Nb of 16-bit data to program can be decreased */
1467         pFlash.DataRemaining--;
1468
1469         /* Check if there are still 16-bit data to program */
1470         if(pFlash.DataRemaining != 0)
1471         {
1472           /* Increment address to 16-bit */
1473           pFlash.Address += 2;
1474           addresstmp = pFlash.Address;
1475
1476           /* Shift to have next 16-bit data */
1477           pFlash.Data = (pFlash.Data >> 16);
1478
1479           /* Operation is completed, disable the PG Bit */
1480           CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
1481
1482           /*Program halfword (16-bit) at a specified address.*/
1483           FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
1484         }
1485         else
1486         {
1487           /*Program ended. Return the selected address*/
1488           /* FLASH EOP interrupt user callback */
1489           if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
1490           {
1491             HAL_FLASH_EndOfOperationCallback(pFlash.Address);
1492           }
1493           else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
1494           {
1495             HAL_FLASH_EndOfOperationCallback(pFlash.Address-2);
1496           }
1497           else
1498           {
1499             HAL_FLASH_EndOfOperationCallback(pFlash.Address-6);
1500           }
1501
1502           /* Reset Address and stop Program procedure*/
1503           pFlash.Address = 0xFFFFFFFF;
1504           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
1505         }
1506       }
1507     }
1508   }
1509
1510   if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
1511   {
1512     /* Operation is completed, disable the PG, PER and MER Bits for both bank */
1513     CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
1514     CLEAR_BIT(FLASH->CR2, (FLASH_CR2_PG | FLASH_CR2_PER | FLASH_CR2_MER));
1515
1516     /* Disable End of FLASH Operation and Error source interrupts for both banks */
1517     __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1 | FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
1518
1519     /* Process Unlocked */
1520     __HAL_UNLOCK(&pFlash);
1521   }
1522 }
1523 /**
1524   * @}
1525   */
1526
1527 /**
1528   * @}
1529   */
1530 #endif /* STM32F101xG || STM32F103xG */
1531
1532 /** @addtogroup FLASH_Private_Functions
1533  * @{
1534  */
1535
1536 /**
1537   * @brief  Program a half-word (16-bit) at a specified address.
1538   * @param  Address: specifies the address to be programmed.
1539   * @param  Data: specifies the data to be programmed.
1540   * @retval None
1541   */
1542 void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
1543 {
1544   /* Clean the error context */
1545   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
1546
1547 #if  defined(STM32F101xG) || defined(STM32F103xG)
1548   if(Address <= FLASH_BANK1_END)
1549   {
1550 #endif /* STM32F101xG || STM32F103xG */
1551     /* Proceed to program the new data */
1552     SET_BIT(FLASH->CR, FLASH_CR_PG);
1553 #if  defined(STM32F101xG) || defined(STM32F103xG)
1554   }
1555   else
1556   {
1557     /* Proceed to program the new data */
1558     SET_BIT(FLASH->CR2, FLASH_CR2_PG);
1559   }
1560 #endif /* STM32F101xG || STM32F103xG */
1561
1562   /* Write data in the address */
1563   *(__IO uint16_t*)Address = Data;
1564 }
1565
1566 /**
1567   * @brief  Set the specific FLASH error flag.
1568   * @retval None
1569   */
1570 void FLASH_SetErrorCode(void)
1571 {
1572 #if  defined(STM32F101xG) || defined(STM32F103xG)
1573   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2))
1574 #else
1575   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
1576 #endif /* STM32F101xG || STM32F103xG */
1577   {
1578     pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
1579   }
1580 #if  defined(STM32F101xG) || defined(STM32F103xG)
1581   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
1582 #else
1583   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
1584 #endif /* STM32F101xG || STM32F103xG */
1585   {
1586      pFlash.ErrorCode |= HAL_FLASH_ERROR_PROG;
1587   }
1588
1589   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR))
1590   {
1591      pFlash.ErrorCode |= HAL_FLASH_ERROR_OPTV;
1592      __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPTVERR);
1593   }
1594
1595   /* Clear FLASH error pending bits */
1596 #if  defined(STM32F101xG) || defined(STM32F103xG)
1597   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_WRPERR_BANK2 | FLASH_FLAG_PGERR | FLASH_FLAG_PGERR_BANK2);
1598 #else
1599   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
1600 #endif /* STM32F101xG || STM32F103xG */
1601 }
1602
1603 /**
1604   * @brief  Erase the specified FLASH memory page
1605   * @param  PageAddress: FLASH page to erase
1606   *         The value of this parameter depend on device used within the same series
1607   *
1608   * @retval None
1609   */
1610 void FLASH_PageErase(uint32_t PageAddress)
1611 {
1612   /* Clean the error context */
1613   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
1614
1615 #if  defined(STM32F101xG) || defined(STM32F103xG)
1616   if(PageAddress > FLASH_BANK1_END)
1617   {
1618     /* Proceed to erase the page */
1619     SET_BIT(FLASH->CR2, FLASH_CR2_PER);
1620     WRITE_REG(FLASH->AR2, PageAddress);
1621     SET_BIT(FLASH->CR2, FLASH_CR2_STRT);
1622   }
1623   else
1624 #endif /* STM32F101xG || STM32F103xG */
1625   {
1626     /* Proceed to erase the page */
1627     SET_BIT(FLASH->CR, FLASH_CR_PER);
1628     WRITE_REG(FLASH->AR, PageAddress);
1629     SET_BIT(FLASH->CR, FLASH_CR_STRT);
1630   }
1631 }
1632
1633 /**
1634   * @}
1635   */
1636
1637 /**
1638   * @}
1639   */
1640
1641 /**
1642   * @}
1643   */
1644
1645 #endif /* HAL_FLASH_MODULE_ENABLED */
1646 /**
1647   * @}
1648   */
1649
1650 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/