106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
#include "flash.h"
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uint8_t Write_Buff[STM32L_PAGES_SIZE];
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//读取FLASHYIGE 字节的数据
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uint8_t FLASH_ReadByte(uint32_t Addr)
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{
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return *(__IO uint8_t*)Addr;
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}
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//读取FLASH多个字节的数据
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void FLASH_ReadNByte(uint32_t Addr,uint8_t *pBuff,uint32_t Len)
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{
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uint32_t i;
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for(i = 0;i < Len;i++)
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{
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pBuff[i] = FLASH_ReadByte(Addr);
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Addr ++;
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}
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}
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/*************************************
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函数名称：
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函数功能：向FLASH指地址写
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入数据
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函数参数：页号，写入缓冲区
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函数返回值：
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**************************************/
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void FLASH_WriteWord(uint32_t add,uint8_t *pBuff,uint32_t length)
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{
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unsigned short int i;
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if(add < STM32L_FLASH_BASE)
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return;
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FLASH_Unlock();
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FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR|FLASH_FLAG_PGAERR\
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|FLASH_FLAG_SIZERR|FLASH_FLAG_OPTVERR|FLASH_FLAG_OPTVERRUSR);
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//FLASH_ErasePage(Addr);
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/*******************************************/
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for(i = 0;i < length;i+=4)
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{
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FLASH_FastProgramWord(add+i,*(uint32_t *)pBuff);
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//add += 4;
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pBuff += 4;
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}
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/*******************************************/
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FLASH_Lock();
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}
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/*************************************
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函数名称：
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函数功能：向FLASH指定页写
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入数据
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函数参数：页号，写入缓冲区
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函数返回值：
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**************************************/
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void FLASH_WritePage(uint16_t Page_Num,uint8_t *pBuff)
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{
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uint32_t Addr;
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unsigned short int i;
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if(Page_Num > STM32L_PAGES_NUM)
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return;
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Addr = Page_Num * STM32L_PAGES_SIZE + APP_ADDR;
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FLASH_Unlock();
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FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR|FLASH_FLAG_PGAERR\
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|FLASH_FLAG_SIZERR|FLASH_FLAG_OPTVERR|FLASH_FLAG_OPTVERRUSR);
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FLASH_ErasePage(Addr);
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/*******************************************/
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for(i = 0;i < STM32L_PAGES_SIZE;i+=4)
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{
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FLASH_FastProgramWord(Addr,*(unsigned long int *)pBuff);
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Addr += 4;
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pBuff += 4;
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}
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/*******************************************/
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FLASH_Lock();
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}
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void Flash_Erase_Pages(uint32_t pagestart,uint16_t number)
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{
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uint32_t Addr;
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if(pagestart > STM32L_PAGES_NUM)
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return;
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//Addr = pagestart * STM32L_PAGES_SIZE + APP_ADDR;
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FLASH_Unlock();
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FLASH_ClearFlag(FLASH_FLAG_EOP|FLASH_FLAG_WRPERR|FLASH_FLAG_PGAERR\
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|FLASH_FLAG_SIZERR|FLASH_FLAG_OPTVERR|FLASH_FLAG_OPTVERRUSR);
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for( uint16_t i=0;i<number;i++)
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{
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//Addr = (pagestart+i) * STM32L_PAGES_SIZE + APP_ADDR;
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Addr = (pagestart+i) * STM32L_PAGES_SIZE + STM32L_FLASH_BASE;
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FLASH_ErasePage(Addr);
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}
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FLASH_Lock();
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}
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