如何在C中删除多个闪存地址？

I try to erase flash address in stm32l011k4. My code like that;

我尝试擦除stm32l011k4中的flash地址。我的代码就是这样;

#define SLAVE_ID_ADDR_I                             0x08080001
#define SLAVE_ID_ADDR_II                            0x08080002
#define SLAVE_ID_ADDR_III                           0x08080003
#define MASTERID                                    0x08080000

void software_erase(void){  

        HAL_FLASH_Unlock();

    /* Fill EraseInit structure*/
    EraseInitStruct.TypeErase   = FLASH_TYPEERASE_PAGES;
    EraseInitStruct.PageAddress = SlaveID_III;              
    EraseInitStruct.NbPages     = 4;                                    

    if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
    {
        playTone=3;
    }
    else{           
        MasterID = 0;
        SlaveID_I = 0;
        SlaveID_II = 0;
        SlaveID_III = 0;
        MasterID_loaded = 0;
        SlaveID_loaded_I = 0;
        SlaveID_loaded_II = 0;
        SlaveID_loaded_III = 0;
        clear_keyfobs = 1;
        playTone=2;
    }
}

Edit: But I want to erase bytes between 0x08080001 - 0x08080003. Not all sections. It's means "0x08080001, 0x08080002, 0x08080003" must be deleted but "0x08080000" must be remain.

编辑:但我想删除0x08080001 - 0x08080003之间的字节。不是所有部分。这意味着必须删除“0x08080001,0x08080002,0x08080003”,但必须保留“0x08080000”。

Any suggestion?

2 个解决方案

#1

The addresses are pointing to EEPROM, not flash.

地址指向EEPROM,而不是闪存。

You don't have to erase anything in EEPROM, just unlock it and write the new values.

您不必擦除EEPROM中的任何内容,只需将其解锁并写入新值即可。

However, in order to write a byte, you'd need a properly dereferenced pointer, an integer constant won't work.

但是,为了写一个字节,你需要一个正确的解引用指针,一个整数常量将不起作用。

#define SLAVE_ID_ADDR_I   (*(volatile unsigned char *)0x08080001)
#define SLAVE_ID_ADDR_II  (*(volatile unsigned char *)0x08080002)
#define SLAVE_ID_ADDR_III (*(volatile unsigned char *)0x08080003)
#define MASTERID          (*(volatile unsigned char *)0x08080000)

void software_erase(void)
{
    if(FLASH->PECR & FLASH_PECR_PELOCK)
        HAL_FLASH_Unlock();
    SLAVE_ID_ADDR_I = 0;
    ...

2 个解决方案

#1

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