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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 | /** ****************************************************************************** * @file stm32f7xx_hal_flash.c * @author MCD Application Team * @version V1.2.0 * @date 30-December-2016 * @brief FLASH HAL module driver. * This file provides firmware functions to manage the following * functionalities of the internal FLASH memory: * + Program operations functions * + Memory Control functions * + Peripheral Errors functions * @verbatim ============================================================================== ##### FLASH peripheral features ##### ============================================================================== [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses to the Flash memory. It implements the erase and program Flash memory operations and the read and write protection mechanisms. [..] The Flash memory interface accelerates code execution with a system of instruction prefetch and cache lines. [..] The FLASH main features are: (+) Flash memory read operations (+) Flash memory program/erase operations (+) Read / write protections (+) Prefetch on I-Code (+) 64 cache lines of 128 bits on I-Code (+) 8 cache lines of 128 bits on D-Code ##### How to use this driver ##### ============================================================================== [..] This driver provides functions and macros to configure and program the FLASH memory of all STM32F7xx devices. (#) FLASH Memory IO Programming functions: (++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and HAL_FLASH_Lock() functions (++) Program functions: byte, half word, word and double word (++) There Two modes of programming : (+++) Polling mode using HAL_FLASH_Program() function (+++) Interrupt mode using HAL_FLASH_Program_IT() function (#) Interrupts and flags management functions : (++) Handle FLASH interrupts by calling HAL_FLASH_IRQHandler() (++) Wait for last FLASH operation according to its status (++) Get error flag status by calling HAL_SetErrorCode() [..] In addition to these functions, this driver includes a set of macros allowing to handle the following operations: (+) Set the latency (+) Enable/Disable the prefetch buffer (+) Enable/Disable the Instruction cache and the Data cache (+) Reset the Instruction cache and the Data cache (+) Enable/Disable the FLASH interrupts (+) Monitor the FLASH flags status [..] (@) For any Flash memory program operation (erase or program), the CPU clock frequency (HCLK) must be at least 1MHz. (@) The contents of the Flash memory are not guaranteed if a device reset occurs during a Flash memory operation. (@) Any attempt to read the Flash memory while it is being written or erased, causes the bus to stall. Read operations are processed correctly once the program operation has completed. This means that code or data fetches cannot be performed while a write/erase operation is ongoing. @endverbatim ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f7xx_hal.h" /** @addtogroup STM32F7xx_HAL_Driver * @{ */ /** @defgroup FLASH FLASH * @brief FLASH HAL module driver * @{ */ #ifdef HAL_FLASH_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /** @addtogroup FLASH_Private_Constants * @{ */ #define SECTOR_MASK ((uint32_t)0xFFFFFF07U) #define FLASH_TIMEOUT_VALUE ((uint32_t)50000U)/* 50 s */ /** * @} */ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /** @addtogroup FLASH_Private_Variables * @{ */ /* Variable used for Erase sectors under interruption */ FLASH_ProcessTypeDef pFlash; /** * @} */ /* Private function prototypes -----------------------------------------------*/ /** @addtogroup FLASH_Private_Functions * @{ */ /* Program operations */ static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data); static void FLASH_Program_Word(uint32_t Address, uint32_t Data); static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data); static void FLASH_Program_Byte(uint32_t Address, uint8_t Data); static void FLASH_SetErrorCode(void); HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout); /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @defgroup FLASH_Exported_Functions FLASH Exported Functions * @{ */ /** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions * @brief Programming operation functions * @verbatim =============================================================================== ##### Programming operation functions ##### =============================================================================== [..] This subsection provides a set of functions allowing to manage the FLASH program operations. @endverbatim * @{ */ /** * @brief Program byte, halfword, word or double word at a specified address * @param TypeProgram: Indicate the way to program at a specified address. * This parameter can be a value of @ref FLASH_Type_Program * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed * * @retval HAL_StatusTypeDef HAL Status */ HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data) { HAL_StatusTypeDef status = HAL_ERROR; /* Process Locked */ __HAL_LOCK(&pFlash); /* Check the parameters */ assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { switch(TypeProgram) { case FLASH_TYPEPROGRAM_BYTE : { /*Program byte (8-bit) at a specified address.*/ FLASH_Program_Byte(Address, (uint8_t) Data); break; } case FLASH_TYPEPROGRAM_HALFWORD : { /*Program halfword (16-bit) at a specified address.*/ FLASH_Program_HalfWord(Address, (uint16_t) Data); break; } case FLASH_TYPEPROGRAM_WORD : { /*Program word (32-bit) at a specified address.*/ FLASH_Program_Word(Address, (uint32_t) Data); break; } case FLASH_TYPEPROGRAM_DOUBLEWORD : { /*Program double word (64-bit) at a specified address.*/ FLASH_Program_DoubleWord(Address, Data); break; } default : break; } /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); /* If the program operation is completed, disable the PG Bit */ FLASH->CR &= (~FLASH_CR_PG); } /* Process Unlocked */ __HAL_UNLOCK(&pFlash); return status; } /** * @brief Program byte, halfword, word or double word at a specified address with interrupt enabled. * @param TypeProgram: Indicate the way to program at a specified address. * This parameter can be a value of @ref FLASH_Type_Program * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data) { HAL_StatusTypeDef status = HAL_OK; /* Process Locked */ __HAL_LOCK(&pFlash); /* Check the parameters */ assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram)); /* Enable End of FLASH Operation interrupt */ __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP); /* Enable Error source interrupt */ __HAL_FLASH_ENABLE_IT(FLASH_IT_ERR); /* Clear pending flags (if any) */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |\ FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR| FLASH_FLAG_ERSERR); pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAM; pFlash.Address = Address; switch(TypeProgram) { case FLASH_TYPEPROGRAM_BYTE : { /*Program byte (8-bit) at a specified address.*/ FLASH_Program_Byte(Address, (uint8_t) Data); break; } case FLASH_TYPEPROGRAM_HALFWORD : { /*Program halfword (16-bit) at a specified address.*/ FLASH_Program_HalfWord(Address, (uint16_t) Data); break; } case FLASH_TYPEPROGRAM_WORD : { /*Program word (32-bit) at a specified address.*/ FLASH_Program_Word(Address, (uint32_t) Data); break; } case FLASH_TYPEPROGRAM_DOUBLEWORD : { /*Program double word (64-bit) at a specified address.*/ FLASH_Program_DoubleWord(Address, Data); break; } default : break; } return status; } /** * @brief This function handles FLASH interrupt request. * @retval None */ void HAL_FLASH_IRQHandler(void) { uint32_t temp = 0; /* If the program operation is completed, disable the PG Bit */ FLASH->CR &= (~FLASH_CR_PG); /* If the erase operation is completed, disable the SER Bit */ FLASH->CR &= (~FLASH_CR_SER); FLASH->CR &= SECTOR_MASK; /* if the erase operation is completed, disable the MER Bit */ FLASH->CR &= (~FLASH_MER_BIT); /* Check FLASH End of Operation flag */ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET) { /* Clear FLASH End of Operation pending bit */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP); switch (pFlash.ProcedureOnGoing) { case FLASH_PROC_SECTERASE : { /* Nb of sector to erased can be decreased */ pFlash.NbSectorsToErase--; /* Check if there are still sectors to erase */ if(pFlash.NbSectorsToErase != 0) { temp = pFlash.Sector; /* Indicate user which sector has been erased */ HAL_FLASH_EndOfOperationCallback(temp); /* Increment sector number */ temp = ++pFlash.Sector; FLASH_Erase_Sector(temp, pFlash.VoltageForErase); } else { /* No more sectors to Erase, user callback can be called.*/ /* Reset Sector and stop Erase sectors procedure */ pFlash.Sector = temp = 0xFFFFFFFFU; /* FLASH EOP interrupt user callback */ HAL_FLASH_EndOfOperationCallback(temp); /* Sector Erase procedure is completed */ pFlash.ProcedureOnGoing = FLASH_PROC_NONE; } break; } case FLASH_PROC_MASSERASE : { /* MassErase ended. Return the selected bank : in this product we don't have Banks */ /* FLASH EOP interrupt user callback */ HAL_FLASH_EndOfOperationCallback(0); /* MAss Erase procedure is completed */ pFlash.ProcedureOnGoing = FLASH_PROC_NONE; break; } case FLASH_PROC_PROGRAM : { /*Program ended. Return the selected address*/ /* FLASH EOP interrupt user callback */ HAL_FLASH_EndOfOperationCallback(pFlash.Address); /* Programming procedure is completed */ pFlash.ProcedureOnGoing = FLASH_PROC_NONE; break; } default : break; } } /* Check FLASH operation error flags */ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET) { switch (pFlash.ProcedureOnGoing) { case FLASH_PROC_SECTERASE : { /* return the faulty sector */ temp = pFlash.Sector; pFlash.Sector = 0xFFFFFFFFU; break; } case FLASH_PROC_MASSERASE : { /* No return in case of Mass Erase */ temp = 0; break; } case FLASH_PROC_PROGRAM : { /*return the faulty address*/ temp = pFlash.Address; break; } default : break; } /*Save the Error code*/ FLASH_SetErrorCode(); /* FLASH error interrupt user callback */ HAL_FLASH_OperationErrorCallback(temp); /*Stop the procedure ongoing */ pFlash.ProcedureOnGoing = FLASH_PROC_NONE; } if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE) { /* Disable End of FLASH Operation interrupt */ __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP); /* Disable Error source interrupt */ __HAL_FLASH_DISABLE_IT(FLASH_IT_ERR); /* Process Unlocked */ __HAL_UNLOCK(&pFlash); } } /** * @brief FLASH end of operation interrupt callback * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure * - Sectors Erase: Sector which has been erased (if 0xFFFFFFFF, it means that * all the selected sectors have been erased) * - Program : Address which was selected for data program * - Mass Erase : No return value expected * @retval None */ __weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue) { /* Prevent unused argument(s) compilation warning */ UNUSED(ReturnValue); /* NOTE : This function Should not be modified, when the callback is needed, the HAL_FLASH_EndOfOperationCallback could be implemented in the user file */ } /** * @brief FLASH operation error interrupt callback * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure * - Sectors Erase: Sector which has been erased (if 0xFFFFFFFF, it means that * all the selected sectors have been erased) * - Program : Address which was selected for data program * - Mass Erase : No return value expected * @retval None */ __weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue) { /* Prevent unused argument(s) compilation warning */ UNUSED(ReturnValue); /* NOTE : This function Should not be modified, when the callback is needed, the HAL_FLASH_OperationErrorCallback could be implemented in the user file */ } /** * @} */ /** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions * @brief management functions * @verbatim =============================================================================== ##### Peripheral Control functions ##### =============================================================================== [..] This subsection provides a set of functions allowing to control the FLASH memory operations. @endverbatim * @{ */ /** * @brief Unlock the FLASH control register access * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_Unlock(void) { if((FLASH->CR & FLASH_CR_LOCK) != RESET) { /* Authorize the FLASH Registers access */ FLASH->KEYR = FLASH_KEY1; FLASH->KEYR = FLASH_KEY2; } else { return HAL_ERROR; } return HAL_OK; } /** * @brief Locks the FLASH control register access * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_Lock(void) { /* Set the LOCK Bit to lock the FLASH Registers access */ FLASH->CR |= FLASH_CR_LOCK; return HAL_OK; } /** * @brief Unlock the FLASH Option Control Registers access. * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void) { if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET) { /* Authorizes the Option Byte register programming */ FLASH->OPTKEYR = FLASH_OPT_KEY1; FLASH->OPTKEYR = FLASH_OPT_KEY2; } else { return HAL_ERROR; } return HAL_OK; } /** * @brief Lock the FLASH Option Control Registers access. * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_OB_Lock(void) { /* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */ FLASH->OPTCR |= FLASH_OPTCR_OPTLOCK; return HAL_OK; } /** * @brief Launch the option byte loading. * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASH_OB_Launch(void) { /* Set the OPTSTRT bit in OPTCR register */ FLASH->OPTCR |= FLASH_OPTCR_OPTSTRT; /* Wait for last operation to be completed */ return(FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE)); } /** * @} */ /** @defgroup FLASH_Exported_Functions_Group3 Peripheral State and Errors functions * @brief Peripheral Errors functions * @verbatim =============================================================================== ##### Peripheral Errors functions ##### =============================================================================== [..] This subsection permits to get in run-time Errors of the FLASH peripheral. @endverbatim * @{ */ /** * @brief Get the specific FLASH error flag. * @retval FLASH_ErrorCode: The returned value can be: * @arg FLASH_ERROR_ERS: FLASH Erasing Sequence error flag * @arg FLASH_ERROR_PGP: FLASH Programming Parallelism error flag * @arg FLASH_ERROR_PGA: FLASH Programming Alignment error flag * @arg FLASH_ERROR_WRP: FLASH Write protected error flag * @arg FLASH_ERROR_OPERATION: FLASH operation Error flag */ uint32_t HAL_FLASH_GetError(void) { return pFlash.ErrorCode; } /** * @} */ /** * @brief Wait for a FLASH operation to complete. * @param Timeout: maximum flash operationtimeout * @retval HAL Status */ HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout) { uint32_t tickstart = 0; /* Clear Error Code */ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE; /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset. Even if the FLASH operation fails, the BUSY flag will be reset and an error flag will be set */ /* Get tick */ tickstart = HAL_GetTick(); while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY) != RESET) { if(Timeout != HAL_MAX_DELAY) { if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout)) { return HAL_TIMEOUT; } } } if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ALL_ERRORS) != RESET) { /*Save the error code*/ FLASH_SetErrorCode(); return HAL_ERROR; } /* Check FLASH End of Operation flag */ if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != RESET) { /* Clear FLASH End of Operation pending bit */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP); } /* If there is an error flag set */ return HAL_OK; } /** * @brief Program a double word (64-bit) at a specified address. * @note This function must be used when the device voltage range is from * 2.7V to 3.6V and an External Vpp is present. * * @note If an erase and a program operations are requested simultaneously, * the erase operation is performed before the program one. * * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed. * @retval None */ static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data) { /* Check the parameters */ assert_param(IS_FLASH_ADDRESS(Address)); /* If the previous operation is completed, proceed to program the new data */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= FLASH_PSIZE_DOUBLE_WORD; FLASH->CR |= FLASH_CR_PG; *(__IO uint64_t*)Address = Data; /* Data synchronous Barrier (DSB) Just after the write operation This will force the CPU to respect the sequence of instruction (no optimization).*/ __DSB(); } /** * @brief Program word (32-bit) at a specified address. * @note This function must be used when the device voltage range is from * 2.7V to 3.6V. * * @note If an erase and a program operations are requested simultaneously, * the erase operation is performed before the program one. * * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed. * @retval None */ static void FLASH_Program_Word(uint32_t Address, uint32_t Data) { /* Check the parameters */ assert_param(IS_FLASH_ADDRESS(Address)); /* If the previous operation is completed, proceed to program the new data */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= FLASH_PSIZE_WORD; FLASH->CR |= FLASH_CR_PG; *(__IO uint32_t*)Address = Data; /* Data synchronous Barrier (DSB) Just after the write operation This will force the CPU to respect the sequence of instruction (no optimization).*/ __DSB(); } /** * @brief Program a half-word (16-bit) at a specified address. * @note This function must be used when the device voltage range is from * 2.7V to 3.6V. * * @note If an erase and a program operations are requested simultaneously, * the erase operation is performed before the program one. * * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed. * @retval None */ static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data) { /* Check the parameters */ assert_param(IS_FLASH_ADDRESS(Address)); /* If the previous operation is completed, proceed to program the new data */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= FLASH_PSIZE_HALF_WORD; FLASH->CR |= FLASH_CR_PG; *(__IO uint16_t*)Address = Data; /* Data synchronous Barrier (DSB) Just after the write operation This will force the CPU to respect the sequence of instruction (no optimization).*/ __DSB(); } /** * @brief Program byte (8-bit) at a specified address. * @note This function must be used when the device voltage range is from * 2.7V to 3.6V. * * @note If an erase and a program operations are requested simultaneously, * the erase operation is performed before the program one. * * @param Address: specifies the address to be programmed. * @param Data: specifies the data to be programmed. * @retval None */ static void FLASH_Program_Byte(uint32_t Address, uint8_t Data) { /* Check the parameters */ assert_param(IS_FLASH_ADDRESS(Address)); /* If the previous operation is completed, proceed to program the new data */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= FLASH_PSIZE_BYTE; FLASH->CR |= FLASH_CR_PG; *(__IO uint8_t*)Address = Data; /* Data synchronous Barrier (DSB) Just after the write operation This will force the CPU to respect the sequence of instruction (no optimization).*/ __DSB(); } /** * @brief Set the specific FLASH error flag. * @retval None */ static void FLASH_SetErrorCode(void) { if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_OPERATION; } if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP; } if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGAERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_PGA; } if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGPERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_PGP; } if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_ERSERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_ERS; } #if defined (FLASH_OPTCR2_PCROP) if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_RDERR) != RESET) { pFlash.ErrorCode |= HAL_FLASH_ERROR_RD; } #endif /* FLASH_OPTCR2_PCROP */ /* Clear error programming flags */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS); } /** * @} */ #endif /* HAL_FLASH_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |