DTM serialization example

RE: DTM serialization example

EzechielC — Wed, 10 Apr 2024 12:44:50 GMT

Hello,

Has there been any evolution on the serialized DTM example since the post of Jorgen on October 15th, 2019 ? If I try to implement it based on the non-serialized DTM example, can it work properly ?

RE: DTM serialization example

Jørgen Holmefjord — Tue, 15 Oct 2019 08:29:20 GMT

I'm not aware of any plans to add a serialized DTM example back to the SDK. If this is an important feature for you, I recommend that you communicate this to your regional Nordic sales manager.

If you post your questions and exact steps/code in a new thread, we may also help you achieve what you want.

RE: DTM serialization example

BenEdna — Thu, 10 Oct 2019 09:55:29 GMT

Hi,

Is there a plan to create a working serialized DTM example?

I'm trying to create a example using two nRF52-DK starting from the serialized heartrate sensor (HCI). This example works perfectly.

I've adapted it so that after initializing the ble_stack with ble_stack_init I set the connectivity chip into DTM mode from the application chip, but I never see the connectivity chip go into DTM mode or see a SER_PKT_TYPE_DTM_CMD message arrive in the ser_conn_received_pkt_process (debugging on connectivity chip).

    bool erase_bonds;

    // Initialize.
    log_init();
    NRF_LOG_INFO("Logging started.");

    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    
    uint32_t                      err_code;
    app_uart_stream_comm_params_t uart_params;

    /* UART config for connectivity chip */
    uart_params.baud_rate = UART_BAUD_RATE_19200;
    uart_params.rx_pin_no = SER_CON_RX_PIN;
    uart_params.tx_pin_no = SER_CON_TX_PIN;

    err_code = ble_dtm_init(&uart_params);
    NRF_LOG_INFO("DTM mode started.");

    if (err_code == NRF_SUCCESS)
    {
        /* Close transport layer on our side */
        err_code = sd_softdevice_disable();
        APP_ERROR_CHECK(err_code);
    }
    APP_ERROR_CHECK(err_code);

    /* (Re-)open uart port */
        uint32_t err_code;
        
    const app_uart_comm_params_t comm_params =
      {
          SER_APP_RX_PIN,
          SER_APP_TX_PIN,
          RTS_PIN_NUMBER,
          CTS_PIN_NUMBER,
          APP_UART_FLOW_CONTROL_DISABLED,
          false,
          5152768                           /**< 19200 baud */
      };

    APP_UART_FIFO_INIT(&comm_params,
                       256,                    /**< UART RX buffer size. **/
                       256,                    /**< UART TX buffer size. **/    
                       uart_error_handle,
                       APP_IRQ_PRIORITY_LOWEST,
                       err_code);

    APP_ERROR_CHECK(err_code);
    
    for(;;)
    {
        NRF_LOG_PROCESS();
    }

* Are there any other steps required ?

RE: DTM serialization example

Erwin v. H. — Fri, 12 Oct 2018 12:15:38 GMT

Dear,

I got it working for my own project.

If I call the code below it switches the connectivity chip to DTM mode.

{
  uint32_t                      err_code;
  app_uart_stream_comm_params_t uart_params;
  
  uart_params.baud_rate = NORDIC_DTM_BAUDRATE;
  uart_params.rx_pin_no = NORDIC_DTM_RX_PIN_NR;
  uart_params.tx_pin_no = NORDIC_DTM_TX_PIN_NR;
  
  err_code = ble_dtm_init(&uart_params);

  if (err_code == NRF_SUCCESS)
  {
    err_code = sd_softdevice_disable();
    APP_ERROR_CHECK(err_code);
  }
  APP_ERROR_CHECK(err_code);  
}

Best regards,

Erwin

RE: DTM serialization example

Jørgen Holmefjord — Wed, 10 Oct 2018 12:50:35 GMT

Hi,

Unfortunately, I got verification that this issue is also present in older SDKs (v11.0.0, 12.x.0 and 13.x.0). This means that we do not have a working version of serialized DTM available.

Best regards,
Jørgen

RE: DTM serialization example

Jørgen Holmefjord — Tue, 09 Oct 2018 13:04:31 GMT

Hi,

The serialized DTM example was removed, as it did not work correctly for RX. This is mentioned in the release notes of SDK 14.0.0:

*** Known Issues
****************

** Overall **
 - Serialized Direct Test Mode does not report RX packet count correctly.

How to run the serialized DTM example is described on the bottom of page Serialization software setup. I will get confirmation on that the example works as expected in SDK 13.x.0, and report back to you.

Best regards,
Jørgen