I want to store some data at start address (0x0800F800) until end address (0x0800F820) on flash memory of STM32G030J6. I save data when the address is empty. When the data has reached the end address, I want to erase all data stored from start to end address. But after several tests, the data was not successfully removed from the address.
is there a special configuration in the code for the function of deleting data on flash memory STM32G030J6 ? Or maybe there is a little mistake in my code ?
Here is my code:
Flash memory address
#define DATA_PAGE_STR ((uint32_t)0x0800F800)
#define DATA_PAGE_END ((uint32_t)0x0800F820)
uint32_t Dstr = DATA_PAGE_STR;
Erase function
void F_Erase_Proccess(void)
{
uint8_t page = 0;
uint32_t str = 0;
page = 1;
str = DATA_PAGE_STR;
HAL_FLASH_Unlock();
uint32_t PageError = 0;
FLASH_EraseInitTypeDef EraseInit;
EraseInit.TypeErase = FLASH_TYPEERASE_PAGES;
EraseInit.Page = str;
EraseInit.NbPages = page;
HAL_FLASHEx_Erase(&EraseInit, &PageError);
HAL_FLASH_Lock();
}
Write function
void F_Write_Proccess(uint32_t val)
{
uint32_t* str = 0;
uint32_t end = 0;
uint32_t def = 0;
str = &Dstr;
end = DATA_PAGE_END;
def = DATA_PAGE_STR;
HAL_FLASH_Unlock();
uint32_t value = 0;
while (1)
{
value = *(__IO uint32_t*)(*str);
if (value == 0xFFFFFFFF)
{
HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, *str, val);
break;
}
else
{
*str += 8;
if (*str > end)
{
*str = def;
F_Erase_Proccess();
}
}
}
HAL_FLASH_Lock();
}
Read function
void F_ReadL_Proccess(uint32_t* var)
{
uint32_t* str = 0;
uint32_t def = 0;
str = &Dstr;
def = DATA_PAGE_STR;
uint32_t value = 0;
uint32_t vaddr = def;
while (1)
{
value = *(__IO uint32_t*)vaddr;
if (value == 0xFFFFFFFF)
{
*str = vaddr-8;
if (*str < def)
{
*var = 0;
*str = def;
}
else *var = *(__IO uint32_t*)(*str);
break;
}
else vaddr += 8;
}
}
