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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f1xx_hal_flash.c
  4.   * @author  MCD Application Team
  5.   * @version V1.0.4
  6.   * @date    29-April-2016
  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 State functions
  13.   *        
  14.   @verbatim
  15.   ==============================================================================
  16.                         ##### FLASH peripheral features #####
  17.   ==============================================================================
  18.   [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
  19.        to the Flash memory. It implements the erase and program Flash memory operations
  20.        and the read and write protection mechanisms.
  21.  
  22.   [..] The Flash memory interface accelerates code execution with a system of instruction
  23.       prefetch.
  24.  
  25.   [..] The FLASH main features are:
  26.       (+) Flash memory read operations
  27.       (+) Flash memory program/erase operations
  28.       (+) Read / write protections
  29.       (+) Prefetch on I-Code
  30.       (+) Option Bytes programming
  31.  
  32.  
  33.                      ##### How to use this driver #####
  34.   ==============================================================================
  35.   [..]                            
  36.       This driver provides functions and macros to configure and program the FLASH
  37.       memory of all STM32F1xx devices.
  38.    
  39.       (#) FLASH Memory I/O Programming functions: this group includes all needed
  40.           functions to erase and program the main memory:
  41.         (++) Lock and Unlock the FLASH interface
  42.         (++) Erase function: Erase page, erase all pages
  43.         (++) Program functions: half word, word and doubleword
  44.    
  45.       (#) FLASH Option Bytes Programming functions: this group includes all needed
  46.           functions to manage the Option Bytes:
  47.         (++) Lock and Unlock the Option Bytes
  48.         (++) Set/Reset the write protection
  49.         (++) Set the Read protection Level
  50.         (++) Program the user Option Bytes
  51.         (++) Launch the Option Bytes loader
  52.         (++) Erase Option Bytes
  53.         (++) Program the data Option Bytes
  54.         (++) Get the Write protection.
  55.         (++) Get the user option bytes.
  56.    
  57.       (#) Interrupts and flags management functions : this group
  58.           includes all needed functions to:
  59.         (++) Handle FLASH interrupts
  60.         (++) Wait for last FLASH operation according to its status
  61.         (++) Get error flag status          
  62.  
  63.   [..] In addition to these function, this driver includes a set of macros allowing
  64.        to handle the following operations:
  65.      
  66.       (+) Set/Get the latency
  67.       (+) Enable/Disable the prefetch buffer
  68.       (+) Enable/Disable the half cycle access
  69.       (+) Enable/Disable the FLASH interrupts
  70.       (+) Monitor the FLASH flags status
  71.          
  72.   @endverbatim
  73.   ******************************************************************************
  74.   * @attention
  75.   *
  76.   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
  77.   *
  78.   * Redistribution and use in source and binary forms, with or without modification,
  79.   * are permitted provided that the following conditions are met:
  80.   *   1. Redistributions of source code must retain the above copyright notice,
  81.   *      this list of conditions and the following disclaimer.
  82.   *   2. Redistributions in binary form must reproduce the above copyright notice,
  83.   *      this list of conditions and the following disclaimer in the documentation
  84.   *      and/or other materials provided with the distribution.
  85.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  86.   *      may be used to endorse or promote products derived from this software
  87.   *      without specific prior written permission.
  88.   *
  89.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  90.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  91.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  92.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  93.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  94.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  95.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  96.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  97.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  98.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  99.   *
  100.   ******************************************************************************  
  101.   */
  102.  
  103. /* Includes ------------------------------------------------------------------*/
  104. #include "stm32f1xx_hal.h"
  105.  
  106. /** @addtogroup STM32F1xx_HAL_Driver
  107.   * @{
  108.   */
  109.  
  110. #ifdef HAL_FLASH_MODULE_ENABLED
  111.  
  112. /** @defgroup FLASH FLASH
  113.   * @brief FLASH HAL module driver
  114.   * @{
  115.   */
  116.  
  117. /* Private typedef -----------------------------------------------------------*/
  118. /* Private define ------------------------------------------------------------*/
  119. /** @defgroup FLASH_Private_Constants FLASH Private Constants
  120.   * @{
  121.   */
  122. /**
  123.   * @}
  124.   */
  125.  
  126. /* Private macro ---------------------------- ---------------------------------*/
  127. /** @defgroup FLASH_Private_Macros FLASH Private Macros
  128.   * @{
  129.   */
  130.  
  131. /**
  132.   * @}
  133.   */
  134.  
  135. /* Private variables ---------------------------------------------------------*/
  136. /** @defgroup FLASH_Private_Variables FLASH Private Variables
  137.   * @{
  138.   */
  139. /* Variables used for Erase pages under interruption*/
  140. FLASH_ProcessTypeDef pFlash;
  141. /**
  142.   * @}
  143.   */
  144.  
  145. /* Private function prototypes -----------------------------------------------*/
  146. /** @defgroup FLASH_Private_Functions FLASH Private Functions
  147.   * @{
  148.   */
  149. static  void   FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
  150. static  void   FLASH_SetErrorCode(void);
  151. /**
  152.   * @}
  153.   */
  154.  
  155. /* Exported functions ---------------------------------------------------------*/
  156. /** @defgroup FLASH_Exported_Functions FLASH Exported Functions
  157.   * @{
  158.   */
  159.  
  160. /** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
  161.   *  @brief   Programming operation functions
  162.   *
  163. @verbatim  
  164. @endverbatim
  165.   * @{
  166.   */
  167.  
  168. /**
  169.   * @brief  Program halfword, word or double word at a specified address
  170.   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
  171.   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
  172.   *
  173.   * @note   If an erase and a program operations are requested simultaneously,    
  174.   *         the erase operation is performed before the program one.
  175.   *  
  176.   * @note   FLASH should be previously erased before new programmation (only exception to this
  177.   *         is when 0x0000 is programmed)
  178.   *
  179.   * @param  TypeProgram:  Indicate the way to program at a specified address.
  180.   *                       This parameter can be a value of @ref FLASH_Type_Program
  181.   * @param  Address:      Specifies the address to be programmed.
  182.   * @param  Data:         Specifies the data to be programmed
  183.   *
  184.   * @retval HAL_StatusTypeDef HAL Status
  185.   */
  186. HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
  187. {
  188.   HAL_StatusTypeDef status = HAL_ERROR;
  189.   uint8_t index = 0;
  190.   uint8_t nbiterations = 0;
  191.  
  192.   /* Process Locked */
  193.   __HAL_LOCK(&pFlash);
  194.  
  195.   /* Check the parameters */
  196.   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
  197.   assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
  198.  
  199. #if defined(FLASH_BANK2_END)
  200.   if(Address <= FLASH_BANK1_END)
  201.   {
  202. #endif /* FLASH_BANK2_END */
  203.     /* Wait for last operation to be completed */
  204.     status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
  205. #if defined(FLASH_BANK2_END)
  206.   }
  207.   else
  208.   {
  209.     /* Wait for last operation to be completed */
  210.     status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
  211.   }
  212. #endif /* FLASH_BANK2_END */
  213.  
  214.   if(status == HAL_OK)
  215.   {
  216.     if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
  217.     {
  218.       /* Program halfword (16-bit) at a specified address. */
  219.       nbiterations = 1;
  220.     }
  221.     else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
  222.     {
  223.       /* Program word (32-bit = 2*16-bit) at a specified address. */
  224.       nbiterations = 2;
  225.     }
  226.     else
  227.     {
  228.       /* Program double word (64-bit = 4*16-bit) at a specified address. */
  229.       nbiterations = 4;
  230.     }
  231.  
  232.     for (index = 0; index < nbiterations; index++)
  233.     {
  234.       FLASH_Program_HalfWord((Address + (2*index)), (uint16_t)(Data >> (16*index)));
  235.  
  236. #if defined(FLASH_BANK2_END)
  237.       if(Address <= FLASH_BANK1_END)
  238.       {
  239. #endif /* FLASH_BANK2_END */
  240.         /* Wait for last operation to be completed */
  241.         status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
  242.    
  243.         /* If the program operation is completed, disable the PG Bit */
  244.         CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
  245. #if defined(FLASH_BANK2_END)
  246.       }
  247.       else
  248.       {
  249.         /* Wait for last operation to be completed */
  250.         status = FLASH_WaitForLastOperationBank2((uint32_t)FLASH_TIMEOUT_VALUE);
  251.        
  252.         /* If the program operation is completed, disable the PG Bit */
  253.         CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
  254.       }
  255. #endif /* FLASH_BANK2_END */
  256.       /* In case of error, stop programation procedure */
  257.       if (status != HAL_OK)
  258.       {
  259.         break;
  260.       }
  261.     }
  262.   }
  263.  
  264.   /* Process Unlocked */
  265.   __HAL_UNLOCK(&pFlash);
  266.  
  267.   return status;
  268. }
  269.  
  270. /**
  271.   * @brief  Program halfword, word or double word at a specified address  with interrupt enabled.
  272.   * @note   The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
  273.   *         The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
  274.   *
  275.   * @note   If an erase and a program operations are requested simultaneously,    
  276.   *         the erase operation is performed before the program one.
  277.   *
  278.   * @param  TypeProgram: Indicate the way to program at a specified address.
  279.   *                      This parameter can be a value of @ref FLASH_Type_Program
  280.   * @param  Address:     Specifies the address to be programmed.
  281.   * @param  Data:        Specifies the data to be programmed
  282.   *
  283.   * @retval HAL_StatusTypeDef HAL Status
  284.   */
  285. HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
  286. {
  287.   HAL_StatusTypeDef status = HAL_OK;
  288.  
  289.   /* Process Locked */
  290.   __HAL_LOCK(&pFlash);
  291.  
  292.   /* Check the parameters */
  293.   assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
  294.   assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
  295.  
  296. #if defined(FLASH_BANK2_END)
  297.   /* If procedure already ongoing, reject the next one */
  298.   if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
  299.   {
  300.     return HAL_ERROR;
  301.   }
  302.  
  303.   if(Address <= FLASH_BANK1_END)
  304.   {
  305.     /* Enable End of FLASH Operation and Error source interrupts */
  306.     __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1);
  307.  
  308.   }else
  309.   {
  310.     /* Enable End of FLASH Operation and Error source interrupts */
  311.     __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
  312.   }
  313. #else
  314.   /* Enable End of FLASH Operation and Error source interrupts */
  315.   __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
  316. #endif /* FLASH_BANK2_END */
  317.  
  318.   pFlash.Address = Address;
  319.   pFlash.Data = Data;
  320.  
  321.   if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
  322.   {
  323.     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
  324.     /*Program halfword (16-bit) at a specified address.*/
  325.     pFlash.DataRemaining = 1;
  326.   }
  327.   else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
  328.   {
  329.     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
  330.     /*Program word (32-bit : 2*16-bit) at a specified address.*/
  331.     pFlash.DataRemaining = 2;
  332.   }
  333.   else
  334.   {
  335.     pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
  336.     /*Program double word (64-bit : 4*16-bit) at a specified address.*/
  337.     pFlash.DataRemaining = 4;
  338.   }
  339.  
  340.   /*Program halfword (16-bit) at a specified address.*/
  341.   FLASH_Program_HalfWord(Address, (uint16_t)Data);
  342.  
  343.   return status;
  344. }
  345.  
  346. /**
  347.   * @brief This function handles FLASH interrupt request.
  348.   * @retval None
  349.   */
  350. void HAL_FLASH_IRQHandler(void)
  351. {
  352.   uint32_t addresstmp = 0;
  353.  
  354.   /* Check FLASH operation error flags */
  355. #if defined(FLASH_BANK2_END)
  356.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK1) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK1) || \
  357.     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2)))
  358. #else
  359.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
  360. #endif /* FLASH_BANK2_END */
  361.   {
  362.     /*return the faulty address*/
  363.     addresstmp = pFlash.Address;
  364.     /* Reset address */
  365.     pFlash.Address = 0xFFFFFFFF;
  366.  
  367.     /*Save the Error code*/
  368.     FLASH_SetErrorCode();
  369.    
  370.     /* FLASH error interrupt user callback */
  371.     HAL_FLASH_OperationErrorCallback(addresstmp);
  372.  
  373.     /* Stop the procedure ongoing*/
  374.     pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  375.   }
  376.  
  377.   /* Check FLASH End of Operation flag  */
  378. #if defined(FLASH_BANK2_END)
  379.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK1))
  380.   {
  381.     /* Clear FLASH End of Operation pending bit */
  382.     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK1);
  383. #else
  384.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
  385.   {
  386.     /* Clear FLASH End of Operation pending bit */
  387.     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
  388. #endif /* FLASH_BANK2_END */
  389.    
  390.     /* Process can continue only if no error detected */
  391.     if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
  392.     {
  393.       if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
  394.       {
  395.         /* Nb of pages to erased can be decreased */
  396.         pFlash.DataRemaining--;
  397.  
  398.         /* Check if there are still pages to erase*/
  399.         if(pFlash.DataRemaining != 0)
  400.         {
  401.           addresstmp = pFlash.Address;
  402.           /*Indicate user which sector has been erased*/
  403.           HAL_FLASH_EndOfOperationCallback(addresstmp);
  404.  
  405.           /*Increment sector number*/
  406.           addresstmp = pFlash.Address + FLASH_PAGE_SIZE;
  407.           pFlash.Address = addresstmp;
  408.  
  409.           /* If the erase operation is completed, disable the PER Bit */
  410.           CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
  411.  
  412.           FLASH_PageErase(addresstmp);
  413.         }
  414.         else
  415.         {
  416.           /*No more pages to Erase, user callback can be called.*/
  417.           /*Reset Sector and stop Erase pages procedure*/
  418.           pFlash.Address = addresstmp = 0xFFFFFFFF;
  419.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  420.           /* FLASH EOP interrupt user callback */
  421.           HAL_FLASH_EndOfOperationCallback(addresstmp);
  422.         }
  423.       }
  424.       else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
  425.       {
  426.         /* Operation is completed, disable the MER Bit */
  427.         CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
  428.  
  429. #if defined(FLASH_BANK2_END)
  430.         /* Stop Mass Erase procedure if no pending mass erase on other bank */
  431.         if (HAL_IS_BIT_CLR(FLASH->CR2, FLASH_CR2_MER))
  432.         {
  433. #endif /* FLASH_BANK2_END */
  434.           /* MassErase ended. Return the selected bank*/
  435.           /* FLASH EOP interrupt user callback */
  436.           HAL_FLASH_EndOfOperationCallback(0);
  437.  
  438.           /* Stop Mass Erase procedure*/
  439.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  440.         }
  441. #if defined(FLASH_BANK2_END)
  442.       }
  443. #endif /* FLASH_BANK2_END */
  444.       else
  445.       {
  446.         /* Nb of 16-bit data to program can be decreased */
  447.         pFlash.DataRemaining--;
  448.        
  449.         /* Check if there are still 16-bit data to program */
  450.         if(pFlash.DataRemaining != 0)
  451.         {
  452.           /* Increment address to 16-bit */
  453.           pFlash.Address += 2;
  454.           addresstmp = pFlash.Address;
  455.          
  456.           /* Shift to have next 16-bit data */
  457.           pFlash.Data = (pFlash.Data >> 16);
  458.          
  459.           /* Operation is completed, disable the PG Bit */
  460.           CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
  461.  
  462.           /*Program halfword (16-bit) at a specified address.*/
  463.           FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
  464.         }
  465.         else
  466.         {
  467.           /*Program ended. Return the selected address*/
  468.           /* FLASH EOP interrupt user callback */
  469.           if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
  470.           {
  471.             HAL_FLASH_EndOfOperationCallback(pFlash.Address);
  472.           }
  473.           else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
  474.           {
  475.             HAL_FLASH_EndOfOperationCallback(pFlash.Address - 2);
  476.           }
  477.           else
  478.           {
  479.             HAL_FLASH_EndOfOperationCallback(pFlash.Address - 6);
  480.           }
  481.        
  482.           /* Reset Address and stop Program procedure*/
  483.           pFlash.Address = 0xFFFFFFFF;
  484.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  485.         }
  486.       }
  487.     }
  488.   }
  489.  
  490. #if defined(FLASH_BANK2_END)
  491.   /* Check FLASH End of Operation flag  */
  492.   if(__HAL_FLASH_GET_FLAG( FLASH_FLAG_EOP_BANK2))
  493.   {
  494.     /* Clear FLASH End of Operation pending bit */
  495.     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
  496.    
  497.     /* Process can continue only if no error detected */
  498.     if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
  499.     {
  500.       if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
  501.       {
  502.         /* Nb of pages to erased can be decreased */
  503.         pFlash.DataRemaining--;
  504.        
  505.         /* Check if there are still pages to erase*/
  506.         if(pFlash.DataRemaining != 0)
  507.         {
  508.           /* Indicate user which page address has been erased*/
  509.           HAL_FLASH_EndOfOperationCallback(pFlash.Address);
  510.        
  511.           /* Increment page address to next page */
  512.           pFlash.Address += FLASH_PAGE_SIZE;
  513.           addresstmp = pFlash.Address;
  514.  
  515.           /* Operation is completed, disable the PER Bit */
  516.           CLEAR_BIT(FLASH->CR2, FLASH_CR2_PER);
  517.  
  518.           FLASH_PageErase(addresstmp);
  519.         }
  520.         else
  521.         {
  522.           /*No more pages to Erase*/
  523.          
  524.           /*Reset Address and stop Erase pages procedure*/
  525.           pFlash.Address = 0xFFFFFFFF;
  526.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  527.  
  528.           /* FLASH EOP interrupt user callback */
  529.           HAL_FLASH_EndOfOperationCallback(pFlash.Address);
  530.         }
  531.       }
  532.       else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
  533.       {
  534.         /* Operation is completed, disable the MER Bit */
  535.         CLEAR_BIT(FLASH->CR2, FLASH_CR2_MER);
  536.  
  537.         if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_MER))
  538.         {
  539.           /* MassErase ended. Return the selected bank*/
  540.           /* FLASH EOP interrupt user callback */
  541.           HAL_FLASH_EndOfOperationCallback(0);
  542.        
  543.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  544.         }
  545.       }
  546.       else
  547.       {
  548.         /* Nb of 16-bit data to program can be decreased */
  549.         pFlash.DataRemaining--;
  550.        
  551.         /* Check if there are still 16-bit data to program */
  552.         if(pFlash.DataRemaining != 0)
  553.         {
  554.           /* Increment address to 16-bit */
  555.           pFlash.Address += 2;
  556.           addresstmp = pFlash.Address;
  557.          
  558.           /* Shift to have next 16-bit data */
  559.           pFlash.Data = (pFlash.Data >> 16);
  560.          
  561.           /* Operation is completed, disable the PG Bit */
  562.           CLEAR_BIT(FLASH->CR2, FLASH_CR2_PG);
  563.  
  564.           /*Program halfword (16-bit) at a specified address.*/
  565.           FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
  566.         }
  567.         else
  568.         {
  569.           /*Program ended. Return the selected address*/
  570.           /* FLASH EOP interrupt user callback */
  571.           if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
  572.           {
  573.             HAL_FLASH_EndOfOperationCallback(pFlash.Address);
  574.           }
  575.           else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
  576.           {
  577.             HAL_FLASH_EndOfOperationCallback(pFlash.Address-2);
  578.           }
  579.           else
  580.           {
  581.             HAL_FLASH_EndOfOperationCallback(pFlash.Address-6);
  582.           }
  583.          
  584.           /* Reset Address and stop Program procedure*/
  585.           pFlash.Address = 0xFFFFFFFF;
  586.           pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  587.         }
  588.       }
  589.     }
  590.   }
  591. #endif
  592.  
  593.   if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
  594.   {
  595. #if defined(FLASH_BANK2_END)
  596.     /* Operation is completed, disable the PG, PER and MER Bits for both bank */
  597.     CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
  598.     CLEAR_BIT(FLASH->CR2, (FLASH_CR2_PG | FLASH_CR2_PER | FLASH_CR2_MER));  
  599.  
  600.     /* Disable End of FLASH Operation and Error source interrupts for both banks */
  601.     __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP_BANK1 | FLASH_IT_ERR_BANK1 | FLASH_IT_EOP_BANK2 | FLASH_IT_ERR_BANK2);
  602. #else
  603.     /* Operation is completed, disable the PG, PER and MER Bits */
  604.     CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
  605.  
  606.     /* Disable End of FLASH Operation and Error source interrupts */
  607.     __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
  608. #endif /* FLASH_BANK2_END */
  609.  
  610.     /* Process Unlocked */
  611.     __HAL_UNLOCK(&pFlash);
  612.   }
  613. }
  614.  
  615.  
  616. /**
  617.   * @brief  FLASH end of operation interrupt callback
  618.   * @param  ReturnValue: The value saved in this parameter depends on the ongoing procedure
  619.   *                 - Mass Erase: No return value expected
  620.   *                 - Pages Erase: Address of the page which has been erased
  621.   *                    (if 0xFFFFFFFF, it means that all the selected pages have been erased)
  622.   *                 - Program: Address which was selected for data program
  623.   * @retval none
  624.   */
  625. __weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
  626. {
  627.   /* Prevent unused argument(s) compilation warning */
  628.   UNUSED(ReturnValue);
  629.   /* NOTE : This function Should not be modified, when the callback is needed,
  630.             the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
  631.    */
  632. }
  633.  
  634. /**
  635.   * @brief  FLASH operation error interrupt callback
  636.   * @param  ReturnValue: The value saved in this parameter depends on the ongoing procedure
  637.   *                 - Mass Erase: No return value expected
  638.   *                 - Pages Erase: Address of the page which returned an error
  639.   *                 - Program: Address which was selected for data program
  640.   * @retval none
  641.   */
  642. __weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
  643. {
  644.   /* Prevent unused argument(s) compilation warning */
  645.   UNUSED(ReturnValue);
  646.   /* NOTE : This function Should not be modified, when the callback is needed,
  647.             the HAL_FLASH_OperationErrorCallback could be implemented in the user file
  648.    */
  649. }
  650.  
  651. /**
  652.   * @}
  653.   */
  654.  
  655. /** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
  656.  *  @brief   management functions
  657.  *
  658. @verbatim  
  659.  ===============================================================================
  660.                       ##### Peripheral Control functions #####
  661.  ===============================================================================  
  662.     [..]
  663.     This subsection provides a set of functions allowing to control the FLASH
  664.     memory operations.
  665.  
  666. @endverbatim
  667.   * @{
  668.   */
  669.  
  670. /**
  671.   * @brief  Unlock the FLASH control register access
  672.   * @retval HAL Status
  673.   */
  674. HAL_StatusTypeDef HAL_FLASH_Unlock(void)
  675. {
  676.   if (HAL_IS_BIT_SET(FLASH->CR, FLASH_CR_LOCK))
  677.   {
  678.     /* Authorize the FLASH Registers access */
  679.     WRITE_REG(FLASH->KEYR, FLASH_KEY1);
  680.     WRITE_REG(FLASH->KEYR, FLASH_KEY2);
  681.   }
  682.   else
  683.   {
  684.     return HAL_ERROR;
  685.   }
  686.  
  687. #if defined(FLASH_BANK2_END)
  688.   if (HAL_IS_BIT_SET(FLASH->CR2, FLASH_CR2_LOCK))
  689.   {
  690.     /* Authorize the FLASH BANK2 Registers access */
  691.     WRITE_REG(FLASH->KEYR2, FLASH_KEY1);
  692.     WRITE_REG(FLASH->KEYR2, FLASH_KEY2);
  693.   }
  694.   else
  695.   {
  696.     return HAL_ERROR;
  697.   }
  698.  
  699. #endif /* FLASH_BANK2_END */
  700.   return HAL_OK;
  701. }
  702.  
  703. /**
  704.   * @brief  Locks the FLASH control register access
  705.   * @retval HAL Status
  706.   */
  707. HAL_StatusTypeDef HAL_FLASH_Lock(void)
  708. {
  709.   /* Set the LOCK Bit to lock the FLASH Registers access */
  710.   SET_BIT(FLASH->CR, FLASH_CR_LOCK);
  711.  
  712. #if defined(FLASH_BANK2_END)
  713.   /* Set the LOCK Bit to lock the FLASH BANK2 Registers access */
  714.   SET_BIT(FLASH->CR2, FLASH_CR2_LOCK);
  715. #endif /* FLASH_BANK2_END */
  716.  
  717.   return HAL_OK;  
  718. }
  719.  
  720.  
  721. /**
  722.   * @brief  Unlock the FLASH Option Control Registers access.
  723.   * @retval HAL Status
  724.   */
  725. HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
  726. {
  727.   if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_OPTWRE))
  728.   {
  729.     /* Authorizes the Option Byte register programming */
  730.     WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
  731.     WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
  732.   }
  733.   else
  734.   {
  735.     return HAL_ERROR;
  736.   }  
  737.  
  738.   return HAL_OK;  
  739. }
  740.  
  741. /**
  742.   * @brief  Lock the FLASH Option Control Registers access.
  743.   * @retval HAL Status
  744.   */
  745. HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
  746. {
  747.   /* Clear the OPTWRE Bit to lock the FLASH Option Byte Registers access */
  748.   CLEAR_BIT(FLASH->CR, FLASH_CR_OPTWRE);
  749.  
  750.   return HAL_OK;  
  751. }
  752.  
  753. /**
  754.   * @brief  Launch the option byte loading.
  755.   * @note   This function will reset automatically the MCU.
  756.   * @retval HAL_StatusTypeDef HAL Status
  757.   */
  758. HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
  759. {
  760.   /* Initiates a system reset request to launch the option byte loading */
  761.   HAL_NVIC_SystemReset();
  762.  
  763.   return HAL_OK;  
  764. }
  765.  
  766. /**
  767.   * @}
  768.   */  
  769.  
  770. /** @defgroup FLASH_Exported_Functions_Group3 Peripheral State functions
  771.  *  @brief   Peripheral State functions
  772.  *
  773. @verbatim  
  774.  ===============================================================================
  775.                       ##### Peripheral State functions #####
  776.  ===============================================================================  
  777.     [..]
  778.     This subsection permit to get in run-time the status of the FLASH peripheral.
  779.  
  780. @endverbatim
  781.   * @{
  782.   */
  783.  
  784. /**
  785.   * @brief  Get the specific FLASH error flag.
  786.   * @retval FLASH_ErrorCode: The returned value can be:
  787.   *            @ref FLASH_Error_Codes
  788.   */
  789. uint32_t HAL_FLASH_GetError(void)
  790. {
  791.    return pFlash.ErrorCode;
  792. }  
  793. /**
  794.   * @}
  795.   */
  796.  
  797. /**
  798.   * @}
  799.   */
  800.  
  801. /** @addtogroup FLASH_Private_Functions
  802.  * @{
  803.  */
  804.  
  805. /**
  806.   * @brief  Program a half-word (16-bit) at a specified address.
  807.   * @param  Address: specifies the address to be programmed.
  808.   * @param  Data: specifies the data to be programmed.
  809.   * @retval None
  810.   */
  811. static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
  812. {
  813.   /* Clean the error context */
  814.   pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
  815.  
  816. #if defined(FLASH_BANK2_END)
  817.   if(Address <= FLASH_BANK1_END)
  818.   {
  819. #endif /* FLASH_BANK2_END */
  820.     /* Proceed to program the new data */
  821.     SET_BIT(FLASH->CR, FLASH_CR_PG);
  822. #if defined(FLASH_BANK2_END)
  823.   }
  824.   else
  825.   {
  826.     /* Proceed to program the new data */
  827.     SET_BIT(FLASH->CR2, FLASH_CR2_PG);
  828.   }
  829. #endif /* FLASH_BANK2_END */
  830.  
  831.   /* Write data in the address */
  832.   *(__IO uint16_t*)Address = Data;
  833. }
  834.  
  835. /**
  836.   * @brief  Wait for a FLASH operation to complete.
  837.   * @param  Timeout: maximum flash operation timeout
  838.   * @retval HAL_StatusTypeDef HAL Status
  839.   */
  840. HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
  841. {
  842.   /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
  843.      Even if the FLASH operation fails, the BUSY flag will be reset and an error
  844.      flag will be set */
  845.      
  846.   uint32_t tickstart = HAL_GetTick();
  847.      
  848.   while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
  849.   {
  850.     if (Timeout != HAL_MAX_DELAY)
  851.     {
  852.       if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
  853.       {
  854.         return HAL_TIMEOUT;
  855.       }
  856.     }
  857.   }
  858.  
  859.   /* Check FLASH End of Operation flag  */
  860.   if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
  861.   {
  862.     /* Clear FLASH End of Operation pending bit */
  863.     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
  864.   }
  865.  
  866.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR)  ||
  867.      __HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR) ||
  868.      __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
  869.   {
  870.     /*Save the error code*/
  871.     FLASH_SetErrorCode();
  872.     return HAL_ERROR;
  873.   }
  874.  
  875.   /* If there is no error flag set */
  876.   return HAL_OK;
  877. }
  878.  
  879. #if defined(FLASH_BANK2_END)
  880. /**
  881.   * @brief  Wait for a FLASH BANK2 operation to complete.
  882.   * @param  Timeout: maximum flash operation timeout
  883.   * @retval HAL_StatusTypeDef HAL Status
  884.   */
  885. HAL_StatusTypeDef FLASH_WaitForLastOperationBank2(uint32_t Timeout)
  886. {
  887.   /* Wait for the FLASH BANK2 operation to complete by polling on BUSY flag to be reset.
  888.      Even if the FLASH BANK2 operation fails, the BUSY flag will be reset and an error
  889.      flag will be set */
  890.      
  891.   uint32_t tickstart = HAL_GetTick();
  892.      
  893.   while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY_BANK2))
  894.   {
  895.     if (Timeout != HAL_MAX_DELAY)
  896.     {
  897.       if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
  898.       {
  899.         return HAL_TIMEOUT;
  900.       }
  901.     }
  902.   }
  903.  
  904.   /* Check FLASH End of Operation flag  */
  905.   if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP_BANK2))
  906.   {
  907.     /* Clear FLASH End of Operation pending bit */
  908.     __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP_BANK2);
  909.   }
  910.  
  911.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
  912.   {
  913.     /*Save the error code*/
  914.     FLASH_SetErrorCode();
  915.     return HAL_ERROR;
  916.   }
  917.  
  918.   /* If there is an error flag set */
  919.   return HAL_OK;
  920.  
  921. }
  922. #endif /* FLASH_BANK2_END */
  923.  
  924. /**
  925.   * @brief  Set the specific FLASH error flag.
  926.   * @retval None
  927.   */
  928. static void FLASH_SetErrorCode(void)
  929. {
  930. #if defined(FLASH_BANK2_END)
  931.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR_BANK2))
  932. #else
  933.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
  934. #endif /* FLASH_BANK2_END */
  935.   {
  936.     pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
  937.   }
  938. #if defined(FLASH_BANK2_END)
  939.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR_BANK2))
  940. #else
  941.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
  942. #endif /* FLASH_BANK2_END */
  943.   {
  944.      pFlash.ErrorCode |= HAL_FLASH_ERROR_PROG;
  945.   }
  946.  
  947.   if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR))
  948.   {
  949.      pFlash.ErrorCode |= HAL_FLASH_ERROR_OPTV;
  950.      __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPTVERR);
  951.   }
  952.  
  953.   /* Clear FLASH error pending bits */
  954. #if defined(FLASH_BANK2_END)
  955.   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_WRPERR_BANK2 | FLASH_FLAG_PGERR | FLASH_FLAG_PGERR_BANK2);
  956. #else
  957.   __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
  958. #endif /* FLASH_BANK2_END */
  959. }  
  960. /**
  961.   * @}
  962.   */
  963.  
  964. /**
  965.   * @}
  966.   */
  967.  
  968. #endif /* HAL_FLASH_MODULE_ENABLED */
  969.  
  970. /**
  971.   * @}
  972.   */
  973.  
  974. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  975.