#include "Flash.h"
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/**
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* @brief Calculate the number of pages
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* @param Size: The image size,the units of Size is Byte
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* @retval The number of pages or error
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*/
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unsigned short int STMFLASH_ReadHalfWord(unsigned int faddr)
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{
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return *(volatile unsigned short int*)faddr;
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}
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uint32_t FLASH_Pages_Calculate(uint32_t Size)
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{
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// uint32_t Flash_Page_Number = 0;
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//
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// if( Size % PAGE_SIZE != 0)
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// {
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// Flash_Page_Number = ( Size / PAGE_SIZE) + 1;
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// }
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// else
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// Flash_Page_Number = Size / PAGE_SIZE;
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//
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// if( Flash_Page_Number > MAX_FPAGE_NUM)
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// return 0;
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// else
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// return Flash_Page_Number;
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return 1;
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}
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/**
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* @brief erase the block before write Data
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* @param Address: the start address to erase
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Len: the length need to erase,uints is Byte
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* @retval 0:error; 1:success
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*/
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uint32_t FLASH_Prepare(uint32_t Address, uint32_t Len) //ÆðʼµØÖ·ºÍ×Ö³¤
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{uint32_t PageError = 0;
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FLASH_EraseInitTypeDef EraseInitStruct;
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HAL_FLASH_Unlock();
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.PageAddress = Address;
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EraseInitStruct.NbPages = Len >>7;
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// HAL_FLASH_Lock();
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &PageError) != HAL_OK)
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{
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HAL_FLASH_Lock();
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return 0;
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}else{
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HAL_FLASH_Lock();
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return 1;
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}
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// uint32_t NbrOFPage = 0;
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// uint32_t EraseCount = 0;
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// HAL_StatusTypeDef status = HAL_OK;
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//
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// HAL_FLASH_Unlock();
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// NbrOFPage = FLASH_Pages_Calculate( Len );
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//
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// for(; EraseCount < NbrOFPage; EraseCount++)
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// {
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// FLASH_PageErase( Address + ( PAGE_SIZE * EraseCount) );
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// status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
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//
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// if( status != HAL_OK)
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// break;
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// }
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//
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// HAL_FLASH_Lock();
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// if( EraseCount != NbrOFPage)
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// return 0;
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// else
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// return 1;
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}
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/**
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* @brief read the data from flash
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* @param Address: the start address to read
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Len: the length need to read,uints is Byte
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* @retval
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*/
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void FLASH_Read( uint32_t Address, uint8_t* Readbuff, uint32_t Len)
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{
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uint32_t ReadCount = 0;
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for( ; ReadCount < Len; ReadCount++)
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{
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Readbuff[ ReadCount ] = ((uint8_t *)Address)[ ReadCount ];
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}
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}
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/**
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* @brief write data into flash
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* @param Address: the start address to write
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Len: the length need to write,uints is Byte
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* @retval 0:error ; 1:success
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*/
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#define DATA_32 ((uint32_t)0x12345678)
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uint32_t FLASH_Write( uint32_t Address, const uint8_t* pData, uint32_t Len)
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{
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uint32_t WriteCount = 0,temp;
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uint32_t FlashDestination = Address;
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uint32_t FlashSource = (uint32_t)pData;
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HAL_StatusTypeDef FLASHStatus = HAL_OK;
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HAL_FLASH_Unlock();
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for( ; WriteCount < Len; WriteCount+=4)
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{temp=*(uint32_t*)FlashSource;
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FLASHStatus = HAL_FLASH_Program(FLASH_TYPEPROGRAMDATA_WORD, FlashDestination, temp);
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if( FLASHStatus != HAL_OK)
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{
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break;
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}
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if (*(uint16_t*)FlashDestination != *(uint16_t*)FlashSource)
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{
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//break;
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}
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FlashDestination += 4;
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FlashSource += 4;
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}
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HAL_FLASH_Lock();
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if( WriteCount < Len)
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return 0;
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else
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return 1;
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}
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///**
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// * @brief Disable the write protection of desired pages
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// * @param None
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// * @retval None
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// */
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//void FLASH_Dis_WriteProt_Pages(void)
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//{
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// uint32_t UserOptionByte = 0, WRPR = 0;
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// uint16_t Var1 = OB_IWDG_SW, Var2 = OB_STOP_NoRST, Var3 = OB_STDBY_NoRST;
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// FLASH_Status Status = FLASH_BUSY;
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// static uint32_t UserMemoryMask = 0;
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// WRPR = FLASH_GetWriteProtectionOptionByte();
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// /* Test if user memory is write protected */
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// if ((WRPR & UserMemoryMask) != UserMemoryMask)
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// {
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// UserOptionByte = FLASH_GetUserOptionByte();
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// UserMemoryMask |= WRPR;
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// Status = FLASH_EraseOptionBytes(); //½â³ý±£»¤
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// if (UserMemoryMask != 0xFFFFFFFF)
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// {
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// Status = FLASH_EnableWriteProtection((uint32_t)~UserMemoryMask);
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// }
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// /* Test if user Option Bytes are programmed */
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// if ((UserOptionByte & 0x07) != 0x07)
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// {
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// /* Restore user Option Bytes */
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// if ((UserOptionByte & 0x01) == 0x0)
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// {
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// Var1 = OB_IWDG_HW;
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// }
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// if ((UserOptionByte & 0x02) == 0x0)
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// {
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// Var2 = OB_STOP_RST;
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// }
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// if ((UserOptionByte & 0x04) == 0x0)
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// {
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// Var3 = OB_STDBY_RST;
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// }
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// FLASH_UserOptionByteConfig(Var1, Var2, Var3);
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// }
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//
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// }
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//}
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