stm32L011寄存器操作flash

只有写一个地址功能，有其他需求的需要自己完善#ifndef __STM32FLASH_H#define __STM32FLASH_H#include "main.h"#define FLASH_USER_START_ADDR   (FLASH_BASE + FLASH_PAGE_SIZE * 96)       /* Start @ of user Flash area */#define FLASH_USER_END_ADDR     FLASH_USER_START_ADDR + FLASH_PAGE_SIZE * 32   /* End @ of user Flash area */#define FLASH_PEKEY1               ((uint32_t)0x89ABCDEFU)#define FLASH_PEKEY2               ((uint32_t)0x02030405U)void STMFLASH_Unlock(void);void STMFLASH_Write(uint32_t WriteAddr,uint32_t Data);uint32_t STMFLASH_Read(uint32_t ReadAddr);#endif

#include "main.h"//解锁STM32的FLASHvoid STMFLASH_Unlock(void){    if(FLASH->PECR&FLASH_PECR_PRGLOCK)    {        if(FLASH->PECR&FLASH_PECR_PELOCK)        {            FLASH->PEKEYR=FLASH_PEKEY1;//写入解锁序列.            FLASH->PEKEYR=FLASH_PEKEY2;        }        FLASH->PRGKEYR=FLASH_PRGKEY1;//写入解锁序列.        FLASH->PRGKEYR=FLASH_PRGKEY2;    }}void STMFLASH_lock(void){    FLASH->PECR|=FLASH_PECR_PRGLOCK;}//FLASH->SR & FLASH_FLAG_BSYunsigned char STMFLASH_Status(void){    unsigned char res = 0;    if((FLASH->SR & FLASH_FLAG_BSY)==FLASH_FLAG_BSY )    {        res = 1;    }    if( ((FLASH->SR&FLASH_FLAG_WRPERR) ==FLASH_FLAG_WRPERR)  ||        ((FLASH->SR&FLASH_FLAG_PGAERR) ==FLASH_FLAG_PGAERR)  ||        ((FLASH->SR&FLASH_FLAG_SIZERR) ==FLASH_FLAG_SIZERR)  ||        ((FLASH->SR&FLASH_FLAG_OPTVERR) ==FLASH_FLAG_OPTVERR)||        ((FLASH->SR&FLASH_FLAG_RDERR) ==FLASH_FLAG_RDERR)    ||        ((FLASH->SR&FLASH_FLAG_FWWERR) ==FLASH_FLAG_FWWERR)  ||        ((FLASH->SR&FLASH_FLAG_NOTZEROERR) ==FLASH_FLAG_NOTZEROERR) )    {        res = 2;    }    return res;}unsigned char STMFlash_WaitDone(unsigned short time){    unsigned char res;    do    {        res = STMFLASH_Status();        if(res != 1)            break;        time--;    }while(time);    if(0 == time)        res = 0xff;    return res;}unsigned char STMFlash_ErasePage(uint32_t padd){    unsigned char res = 0;    FLASH->PECR |= FLASH_PECR_ERASE;    FLASH->PECR |= FLASH_PECR_PROG;    *(__IO uint32_t *)(uint32_t)(FLASH_USER_START_ADDR & ~(FLASH_PAGE_SIZE - 1)) = 0x00000000;    STMFlash_WaitDone(0x3fff);    FLASH->PECR&=~FLASH_PECR_PROG;    FLASH->PECR&=~FLASH_PECR_ERASE;    return res;}void STMFLASH_Write(uint32_t WriteAddr,uint32_t Data)   {    //(FLASH->ACR)&=~FLASH_ACR_DISAB_BUF;    STMFLASH_Unlock();    STMFlash_ErasePage(0);    STMFlash_WaitDone(0x3fff);    *(__IO uint32_t *)WriteAddr = Data;    STMFlash_WaitDone(0x3fff);    STMFLASH_lock();}uint32_t STMFLASH_Read(uint32_t ReadAddr){    uint32_t data32;    data32 = *(__IO uint32_t *)ReadAddr;    return data32;}