BLE + FDS Problem to read/write FDS

RE: BLE + FDS Problem to read/write FDS

Jørgen Holmefjord — Fri, 27 Mar 2020 09:57:35 GMT

Could you post your full project for us to reproduce and debug this?

RE: BLE + FDS Problem to read/write FDS

Eng Eink — Thu, 26 Mar 2020 16:34:36 GMT

Yes, i'm debugging FDS_EVT_UPDATE by a NRF LOG:

<info> app: Modelo esta sendo executado.
<info> app: Fast advertising.
<info> app: Event: FDS_EVT_INIT received (FDS_SUCCESS)
<info> app: Escrevendo config file...
<info> app: Event: FDS_EVT_WRITE received (FDS_SUCCESS)
<info> app: Writed!
<info> app: Event: FDS_EVT_UPDATE received (FDS_SUCCESS)
<info> app: Updated!

After i receive the "Updated!" message i reset the device

The function to read or write:

ret_code_t flash_read_n_write(bool wr) {
    ret_code_t rc;
    ret_code_t rc2;
    fds_record_desc_t record_desc = {0};
    fds_find_token_t    ftok;
	
    ftok.page=0;
    ftok.p_addr=NULL;


    static fds_record_t const m_dummy_record =
    {
        .file_id           = FILE_ID,       // ID Onde sera escrito no FDS
        .key               = REC_KEY,       // Chave de Record
        .data.p_data       = &flash_mngt,   // Estrutura onde estarão os dados que serão armazenados na Flash        
        .data.length_words = (sizeof(flash_mngt) + 3) / sizeof(uint32_t), // O tamanho do record é sempre expressado em 4-byte unidades (words)
    }; 
   
         // Procura um record de Flash FDS com os dados configurados anteriormente
         rc = fds_record_find(FLASH_ID, FLASH_REC_KEY, &record_desc, &ftok);

         if (rc == FDS_SUCCESS)
         {
          if(wr) {

                 NRF_LOG_INFO("Encontrado Records");
                 // Atualização do arquivo de config da Flash
                 fds_flash_record_t config = {0};
    
                 // Leitura Flash - Abre a flash FDS e le o conteudo
                 rc = fds_record_open(&record_desc, &config);
                 APP_ERROR_CHECK(rc);
                 NRF_LOG_INFO("Encntrou records");
                 // Copia a configuracao da Flash para o m_dummy_cfg
                 memcpy(&flash_mngt, config.p_data, sizeof(flash_mngt));       
                 NRF_LOG_INFO("Arquivo de config encontrado, atualizando numero de boot p/ %d.", flash_mngt.boot_cnt);
                 flash_mngt.boot_cnt++;
                 // Fecha a flash FDS
                 rc = fds_record_close(&record_desc);
                 APP_ERROR_CHECK(rc);
                 } else { 
      
                     flash_mngt.test++;
                     // Atualiza a Flash
                     rc2 = fds_record_update(&record_desc, &m_dummy_record);
                     APP_ERROR_CHECK(rc);
                     NRF_LOG_INFO("GRAVEI!!!!");
                     return rc;
                 }
       
        } else {
   
       // Configuracao nao encontrada, escreve uma nova
       NRF_LOG_INFO("Escrevendo config file...");

       rc = fds_record_write(&record_desc, &m_dummy_record);
       APP_ERROR_CHECK(rc);
   }
  
}

The write,update and open works normally without BLE

RE: BLE + FDS Problem to read/write FDS

Jørgen Holmefjord — Thu, 26 Mar 2020 16:26:50 GMT

Did you wait for the FDS_EVT_UPDATE event before resetting the device? If not, the record may not have been successfully written before the reset.

RE: BLE + FDS Problem to read/write FDS

Eng Eink — Thu, 26 Mar 2020 16:20:20 GMT

For now i'm just trying to do these steps for tests:

1st boot of the device:
- init FDS
- fds_flash_write to write a new config
- fds_update to store a value that represent boot count

Then i reset the device and hope to:
- Init FDS
- Open the record <<- Error happens
- Close record
- Update the boot count var

But when i open the record i get the error mentioned before

RE: BLE + FDS Problem to read/write FDS

Jørgen Holmefjord — Thu, 26 Mar 2020 15:11:37 GMT

The error you are seeing is FDS_ERR_CRC_CHECK_FAILED. Are you using fds_record_update to update a record before opening the record again? If you are, do you wait for the FDS_EVT_UPDATE event before opening the record?

RE: BLE + FDS Problem to read/write FDS

Eng Eink — Thu, 26 Mar 2020 14:57:41 GMT

Hello Jørgen,

At first ty for your support!

I built the application with DEBUG and DEBUG_NRF and i got this output at my first writing:

<info> app: Modelo esta sendo executado.
<info> app: Fast advertising.
<info> app: Event: FDS_EVT_INIT received (FDS_SUCCESS)
<info> app: Escrevendo config file...
<info> app: Event: FDS_EVT_WRITE received (FDS_SUCCESS)

Then i restarted the device and got the error as you can see below:

<info> app: Modelo esta sendo executado.
<info> app: Fast advertising.
<info> app: Event: FDS_EVT_INIT received (FDS_SUCCESS)
<info> app: Encontrado Records
<error> app: ERROR 13 [NRF_ERROR_TIMEOUT] at C:\Users\W7Pro\Desktop\Nordic_Workspace\#1_Dev\#99_EVK-ANNA-B112\BLE - Servico custom\Components\Src\Flash_FDS.c:271
PC at: 0x0002BA8F
<error> app: End of error report

The line 271 represents my call of the function fds_record_open.

         rc = fds_record_find(FLASH_ID, FLASH_REC_KEY, &record_desc, &ftok);

         if (rc == FDS_SUCCESS)
         {
           NRF_LOG_INFO("Encontrado Records");
           //  if(!flash_mngt.ilk_fds_read) {
             // Atualização do arquivo de config da Flash
             fds_flash_record_t config = {0};
        
             // Leitura Flash - Abre a flash FDS e le o conteudo
 >>>         rc = fds_record_open(&record_desc, &config);
             APP_ERROR_CHECK(rc);

About the use of the softdevice backend for FDS im using the SD:

#define FDS_BACKEND 2

I don't know why but the error of opening the fds is happening only when i use the device as a central.

Best regards;

RE: BLE + FDS Problem to read/write FDS

Jørgen Holmefjord — Thu, 26 Mar 2020 14:27:09 GMT

Hi,

Can you build the application with the debug configuration, or with the DEBUG and DEBUG_NRF preprocessor symbols defined? That should help you get the exact error code and location of the error output on the log.

Are you using the softdevice backend for FDS, and not the NVMC backend? The NVMC backend will generate a softdevice assert when trying to write/erase flash.

Best regards,
Jørgen