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Nordic Case Info
  • Case ID: 279614
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Ble pairing with authentication

ShubMane

1. I had done the pairing without any authentication but now I want to do it with the authentication with an authentication key.

2. please provide some sample code regarding the pairing authentication and its process.

Parents Reply
  • 0 in reply to Amanda Hsieh

    Hi amenda,

    I had declare the local variable in the nus data handler

    static void nus_data_handler(ble_nus_evt_t * p_evt)
{
    int attempt = 0;
    char arr[6];
    char arr_1[6];  
    bool flag = 0;
    
    if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    {
        uint32_t err_code;

        NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
        NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);

        for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
        {
            do
            {
                err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
                
                if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
                {
                    NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
                    APP_ERROR_CHECK(err_code);
                }
            }while (err_code == NRF_ERROR_BUSY);
        }
        if(p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
        {
            while (app_uart_put('\n') == NRF_ERROR_BUSY);
        }

        //storing the data into array which is comming from the ble_master(nrf_connect app)
        for(int i=0; i<=5; i++)
        {
          arr[i] = p_evt->params.rx_data.p_data[i];
        }

        flag = 0;

        // flag = 0; // password is correct
        // flag = 1; // password is incorrect

        if(flag == 0 && attempt == 0)
        {
          if(strcmp(arr, "123456") == 0)
          {
            printf("\nPassword is correct");
            flag = 0;
          }

          if(strcmp(arr, "123456") != 0)
          {
            printf("\nPassword is incorrect!!! Please try again");
            flag = 1;
            attempt++;
          }    
        }

        if(flag == 1 && attempt == 1)
        {
          printf("\nPassword : "); // Here I want to wait till the new data had arrive

          if(strcmp(arr, "123456") == 0)
          {
            printf("\nPassword is correct");
            flag = 0;
          }
          
        }

        // for n number of 
    }
}

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