SOFTDEVICE: ASSERTION FAILED after using fds_gc

[MarcAntoineProtiere]

I have an issue when i am doing  writing of a structure where autoprog is a struct like this :

typedef struct
{
    uint8_t tag_tab[TAG_ID_LENGTH];
}tag;

typedef struct {
    uint8_t reader_cfg;
    //uint8_t reader_sn[SIZE_OF_SN];
    uint8_t reader_mac[PARAM_MAC_SIZE];
    uint32_t number_of_tag;    
    tag tab_tag_autorized[AUTOPROG_NB_OF_TAGS_MAX];   
    
} PARAM_AUTOPROG_t;

When AUTOPROG_NB_OF_TAGS_MAX = 10 i have no problem during the garbage collection but when it is 100 after 3 flash_write when the fonction fds_gc() is called there is a SOFTDEVICE: ASSERTION FAILED, i don't see the link between writing to flash and the sofdevice that has a problem.

is there a way to know why the softdevice stops ?

I am using nrf52_6.1.0 with SDK 15.2.0

Thank you for your help

[Edvin]

Hello,

I am not sure how you translate from the PARAM_AUTOPROG_t to the records that you store using fds. Can you check out the size of the records that are being written when you have AUTOPROG_NB_OF_TAGS_MAX = 10 and when it is 100?

[MarcAntoineProtiere]

Hi thank you for you answer,

i am using the function fds_update to write to the record, my record is around 700 bytes for the 100 tab and around 70 for the tab of 10.

Is there a limit for the size of a record ?

Do you see any link between using fds and have a softdevice issue ?

[MarcAntoineProtiere]

yes  S140 v6.1.0

Yes i was using the log with NRF_LOG_INFO and i get the sofdevice assert.

I will try do it in debug and i let you know.

[MarcAntoineProtiere]

Hi

I tried to run the program in debug whithout the breakpoint and it has stopped at line 100 of app_error_weak.c

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#include "app_error.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "app_util_platform.h"
#include "nrf_strerror.h"

#if defined(SOFTDEVICE_PRESENT) && SOFTDEVICE_PRESENT
#include "nrf_sdm.h"
#endif

/*lint -save -e14 */
/**
 * Function is implemented as weak so that it can be overwritten by custom application error handler
 * when needed.
 */
__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
{
    __disable_irq();

#ifndef DEBUG
    NRF_LOG_ERROR("Fatal error");
#else
    NRF_LOG_FINAL_FLUSH();
    switch (id)
    {
#if defined(SOFTDEVICE_PRESENT) && SOFTDEVICE_PRESENT
        case NRF_FAULT_ID_SD_ASSERT:
            NRF_LOG_ERROR("SOFTDEVICE: ASSERTION FAILED");
            break;
        case NRF_FAULT_ID_APP_MEMACC:
            NRF_LOG_ERROR("SOFTDEVICE: INVALID MEMORY ACCESS");
            break;
#endif
        case NRF_FAULT_ID_SDK_ASSERT:
        {
            assert_info_t * p_info = (assert_info_t *)info;
            NRF_LOG_ERROR("ASSERTION FAILED at %s:%u",
                          p_info->p_file_name,
                          p_info->line_num);
            break;
        }
        case NRF_FAULT_ID_SDK_ERROR:
        {
            error_info_t * p_info = (error_info_t *)info;
            NRF_LOG_ERROR("ERROR %u [%s] at %s:%u\r\nPC at: 0x%08x",
                          p_info->err_code,
                          nrf_strerror_get(p_info->err_code),
                          p_info->p_file_name,
                          p_info->line_num,
                          pc);
             NRF_LOG_ERROR("End of error report");
            break;
        }
        default:
            NRF_LOG_ERROR("UNKNOWN FAULT at 0x%08X", pc);
            break;
    }
#endif

    NRF_BREAKPOINT_COND;
    // On assert, the system can only recover with a reset.

#ifndef DEBUG
    NRF_LOG_WARNING("System reset");
    NVIC_SystemReset();
#else
    //app_error_save_and_stop(id, pc, info);
    NRF_LOG_FINAL_FLUSH();
    while(1);
#endif // DEBUG
}
/*lint -restore */

so after i have put a breakpoint on the line 57 to get the stack when the softdevice assert here :

__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)
//breakpoint here{

So the stack look like this when i have the sofdevice assert with the breakpoint:

[Edvin]

Hello,

Can you please check sdk_config.h and look for a definition of NRF_FSTORAGE_SD_MAX_WRITE_SIZE. By default I think this is set to 4096 in most cases. Can you please try to set this to 1024 instead? this is just a backend setting, so your application logic doesn't need to think about this. 

Try that, and see if the assert still occurs. 

Best regards,

Edvin

[MarcAntoineProtiere]

Congrats your solution is working i have not the assert when i change this value !

Thanks a lot for your help

[awneil]