fds_init() not work

[Pham Tam]

5287.sdk_config.h

Hi,
I'm developing an application using fds.
I merged fds into ble_app_uart and built complete
But when program run fds_init() nRF was crashed
I called fds_registered before.
What is the reason here ? Thank you
I attached my sdk_config.h
Debug terminal does not show any info about that

[Pham Tam]

When I use debug terminal and use restart button" <- " at top-right. After I restart I got more data. The sencond start I got 2 time successfully and 3th time will return like as I mentiond above "FDS_ERR_NOT_FOUND". And so on, in third start, I got 3 time successfully and 4th return FDS_ERR_NOT_FOUND.

Please clarify for me what is the purpose of FILE_ID, RECORD_ID, page. Thank you

[Jared]

Pham Tam said:

Please clarify for me what is the purpose of FILE_ID, RECORD_ID, page. Thank you

This is explained here.

Could you share a minimal example that would reproduce this on a development kit?

regards

Jared 

[Pham Tam]

bool flash_flag = false;
static void fds_evt_handler(fds_evt_t const *p_fds_evt) {
  switch (p_fds_evt->id) {
  case FDS_EVT_INIT:
    if (p_fds_evt->result != NRF_SUCCESS) {
      // Initialization failed.
    }
    break;
  case FDS_EVT_WRITE:
    NRF_LOG_INFO("write")
    flash_flag = true;
    memset(&ftok, 0x00, sizeof(fds_find_token_t));
    break;
  // case FDS_EVT_READ:
  default:
    break;
  }
}

bool uarte1_init_flag = true;
bool uarte2_init_flag = true;

int main(void) {
  bool erase_bonds;
  log_init();

  fds_register(fds_evt_handler);
  NRF_LOG_INFO("done register");

  ret_code_t ret_1;
  ret_1 = fds_init();

  static char const m_hello[] = "hello !";
  record.file_id = FILE_ID;
  record.key = RECORD_KEY_1;

  record.data.p_data = &m_hello;
  record.data.length_words = (sizeof(m_hello) + 3) / 4;
  fds_record_write(&record_desc, &record);
  //   Enter main loop.
  for (;;) {
    idle_state_handle();
    if (flash_flag) {
      NRF_LOG_INFO("start read flash");
      // fds_record_find(FILE_ID, RECORD_KEY, &record_desc, &ftok);

      while (fds_record_find(FILE_ID, RECORD_KEY, &record_desc, &ftok) == NRF_SUCCESS) {
        if (fds_record_open(&record_desc, &flash_record) != NRF_SUCCESS) {
          /* Handle error. */
        }
        /* Access the record through the flash_record structure. */

        NRF_LOG_INFO("read flash %s", flash_record.p_data);
        NRF_LOG_INFO("read flash");
        /* Close the record when done. */
        if (fds_record_close(&record_desc) != NRF_SUCCESS) {
          /* Handle error. */
        }
      }

      flash_flag = false;
    }
    nrf_delay_ms (2000);
  }
}

Here is my code. In for(;;) , I want to read from flash "hello" in every 2 seconds.

Why I have to memset &ftok ? I have some confusions about this parameter

[Jared]

Hi,

You only need to zero the ftok once before you call fds_record_find() the first time. The parameter is used if multiple subsequent calls are done to the find function between between an fds_record_open() and fds_record_close(). 

Can you: 

1. Change RECORD_KEY in fds_record_find(line 47) to RECORD_KEY_1
2. Check the return value of fds_record_write()
3. Move memset(&ftok, 0x00, sizeof(fds_find_token_t)) to line 26

regards

Jared