Pstorage and flash crash

[Ted]

Hi Nordic team,

This problem bothers me for a very long time. I cannot find the root cause. I used nRF51822 IC. It uses SDK11 with softdevice S130 and bootloader (but I use it as a peropheral). I used pstorage to save device name, name length and os on. I found a problem that our product cannot work. I dumped the hex code from many sets. I found the isuue is that the pstorage is crash at 0x3b800 (please see the attach, left side is OK, right side is showing that the pstorage is modified and the set cannot work). Why the pstorage is modified? How to prevent the pstorage from being destroyed? It run default device name and device name length if the pstorage doesn't save any data. I use the pstorage data for device name and device name length if the pstorage has saved data. The address at 0x3b809 is just device name length and get it 0xc0 (see attach right side).

System locks at the following code. Incorrect device name length cause system reset at APP_ERROR_CHECK(err_code). Can anyone help me to solve it?

void gap_params_init(void)
{
...
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
    err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)pack.device_name, pack.device_name_length);
    APP_ERROR_CHECK(err_code);
...
}

err.png err2.png

[Petter Myhre]

Could you upload your complete project so I can test it here?

[gorazd]

Hi,

i had similair issues. The following lines worked for me:

 pg_size = NRF_FICR->CODEPAGESIZE;
 pg_num  =  BLE_FLASH_PAGE_END-2; //NRF_FICR->CODESIZE-1;  
 // start address:
 start_address = (uint32_t *)(pg_size * pg_num);

I read like:

uint32_t tmp   = *start_address;
uint32_t tmp2 = *(start_address+1);

I write like:

 sd_flash_page_erase(pg_num)
 nrf_delay_ms(500);   // wait for few ms or better wait for event
 sd_flash_write(start_address, (uint32_t*)&flash, flash_size)
 nrf_delay_ms(500);  // wait for few ms or better wait for event

I got a nice answer from devzone.nordicsemi.com/.../ Also, use #include "ble_flash.h". And check functions for NRF_SUCCESS.

[Ted]

Our product has been proceeding in mass production. This issue is about 5% of the defect rate. It occurs occasionally. How to upload complete project in secret? Our project has many files.

[Petter Myhre]

You can upload it privately through your MyPage at nordicsemi.com. When does this happen? Just after programming?

[Ted]

I cannot login Mypage by my user ID and password it is used at Nordic develpoer zone. Do I need to register a new account at MyPage? I don't know when the issue happens. Not every set has this iuuse, it has only 5% of our porduct happen this iuuse. The pstorage is modified even if I don't write any data into pstorage. It occurs occasionally. I dump the hex code of crash sets. The data of all set at 0x3B800 to 0x3B813 has the same, after address of 0x3B814 are random. (please see the attach file off err.png) Is it significant? I need to ask my supervisor if I can upload the complete project or not.