nRF52832 flash erase problem:cannot erase the third page

[longycy]

Hi,

Now I test flashwrite example using nRF52832 with software version V12.2.0. I want to erase all memory pages with the code bellow:

for(pg_num=0;pg_num<=pg_total_num;pg_num++)
   {
       addr = (uint32_t *)(pg_size * pg_num);  //pg_size=4096 Bytes
       flash_page_erase(addr);
       
   }

But the erase fails when pg_num=3. I also have tested the other pages and all of them can be erased successfully except page 3.

What is the problem? Why I cannot erase page 3? Looking forward to your reply.

Thanks!

Best Regards Ye Chengyang

[Vincent]

would you try these and pg_size is 1024 Words

#define PAGE_SIZE_WORDS 1024

// Retrieve the address of a page.
static uint32_t const * address_of_page(uint16_t page_num)
{
    return fs_config.p_start_addr + (page_num * PAGE_SIZE_WORDS);
}

void m_flash_erase_page_0(void)
{
	  erase_flag=1;
	  // Erase one page (page 0).
    fs_ret_t ret = fs_erase(&fs_config, address_of_page(0), 1, NULL);
    if( ret != FS_SUCCESS )
    {
        NRF_LOG_INFO("fs_erase error\r\n");
    }
		 while(erase_flag == 1) { power_manage(); }
}

[Jørgen Holmefjord]

Where in flash is your application located? Make sure you are not erasing any pages where the code is stored. Please refer the flashwrite example, which shows how to erase the last page in flash:

pg_size = NRF_FICR->CODEPAGESIZE;
pg_num  = NRF_FICR->CODESIZE - 1;  // Use last page in flash
// Start address:
addr = (uint32_t *)(pg_size * pg_num);
// Erase page:
flash_page_erase(addr);

[longycy]

Yes,I also think this is the problem. I cannot erase all pages becacase it will erase my code so that the system crash. Thank you very much!