my program starts resetting, after trying to save the logs in to flash.

[Faizan]

Hi, I am using nrf51822 CDAB version chip which has 128kb of flash memory, my code is built on ble_hrs I am trying to save my app_trace logs i.e., redirecting my printf to the below function which will save the data on to my flash. After adding this piece of code my device starts resetting. Any other way of logging data into flash would be appreciated.

    /* 
 * Global variables  
 */
static pstorage_handle_t        m_storage_handle;
char                            m_buff[DATA_BLOCK_SIZE] __attribute__  ((aligned(4)));
extern uint8_t                  m_device_name[MAX_DEVICE_BUFFER_LENGTH];
extern uint8_t                  m_accel_threshold;
uint8_t 						block_no = 1;



/**@brief store logs into flash memory 
 *
 * @All the printf logs can be redirected to flash.
 */
int flash_printf(const char *format, ...)
{
    char str[64];
    va_list args;

    pstorage_handle_t handle;

    va_start(args, format);
    sprintf(str, format, args);
    va_end(args);

    pstorage_block_identifier_get(&m_storage_handle, block_no, &handle);
    uint32_t err_code = pstorage_update(&handle, (uint8_t *)str, DATA_BLOCK_SIZE, 0);
    APP_ERROR_CHECK(err_code);
	block_no++;
}

Thanks and Regards, Faizan

[Stefan Birnir Sverrisson]

Hi Faizan

Why is your device resetting? Do you see any error code in the error handler? Look at this thread for info on how to enable the error handler

pstorage documentation

pstorage examples

Where stores pstorage data in flash?