Can't connect central/peripheral relay to peripheral

RE: Can't connect central/peripheral relay to peripheral

Joao Filipe — Mon, 18 May 2020 15:17:09 GMT

Hi Amanda

So, I figured it out where was the error. When I used the peripheral alone to connect do my phone, I had mysnsr defined as BLE_UUID_TYPE_BLE, and it worked fine.

So, on relay app I did the same thing, but was not working. I changed everything to BLE_UUID_TYPE_VENDOR_BEGIN, and it's working now.

RE: Can't connect central/peripheral relay to peripheral

Joao Filipe — Thu, 14 May 2020 14:49:44 GMT

Hi Amanda, the SDK version is 15.3.0.

And yes, ble_db_discovery_evt_register() is called, I inspected and that function returns the values that is suppose to return uuid=0x1620 (my service uuid), and type=0x01 (ble type I defined previously).

RE: Can't connect central/peripheral relay to peripheral

Amanda Hsieh — Thu, 14 May 2020 09:41:36 GMT

Hi Joao,

What is the SDK version you're using?

Did you call ble_db_discovery_evt_register() in the snsr_c_c_init()? You can take a look at the snip of ble_nus_c_init() in the nRF5_SDK\components\ble\ble_services\ble_nus_c\ble_nus_c.c

Please also see this post.

-Amanda H.

RE: Can't connect central/peripheral relay to peripheral

Joao Filipe — Mon, 11 May 2020 14:57:29 GMT

UPDATE!

Hi Amanda. So, I found the following.

The evt_type is not returning what was suppose to return. It says that my service was not found at peer.

I checked and the .srv_uuid.uuid and srv_uuid.type below evt_type,and they have the correct value.

How can I supposedly fix this.

RE: Can't connect central/peripheral relay to peripheral

Joao Filipe — Thu, 07 May 2020 14:42:50 GMT

Hi Amanda. So I have different news today. Now the peer_manager_handler gives a message on Log saying that relay board is at central and the sensor board is at peripheral, that didn't append before. But the relay still cant connect to my service I think.

So, here is what you asked for. It says that there's no error code there.

Now theres the new logs: The relay one.

And down the sensor.c one

And this log in the snsr_c_evt_handler never gets on screen, so I don't know where I'm failing.

RE: Can't connect central/peripheral relay to peripheral

Amanda Hsieh — Wed, 06 May 2020 11:09:47 GMT

Hi,

[quote user="JoaoXensa"]This is the relay debug![/quote]

From the relay debug log, it looks like the relay board connected with the sensor board. Could you check what err_code is returned by ble_db_discovery_start()? You should check where it stops in the ble_db_discovery_start function.

        case BLE_GAP_EVT_CONNECTED:
        {
            NRF_LOG_INFO("Central connected");
            // If no Heart Rate sensor or RSC sensor is currently connected, try to find them on this peripheral.
            if (   (m_conn_handle_hrs_c  == BLE_CONN_HANDLE_INVALID)
                || (m_conn_handle_rscs_c == BLE_CONN_HANDLE_INVALID))
            {
                NRF_LOG_INFO("Attempt to find HRS or RSC on conn_handle 0x%x", p_gap_evt->conn_handle);

                err_code = ble_db_discovery_start(&m_db_discovery[0], p_gap_evt->conn_handle);
                if (err_code == NRF_ERROR_BUSY)
                {
                    err_code = ble_db_discovery_start(&m_db_discovery[1], p_gap_evt->conn_handle);
                    APP_ERROR_CHECK(err_code);
                }
                else
                {
                    APP_ERROR_CHECK(err_code);
                }
            }

-Amanda H.

RE: Can't connect central/peripheral relay to peripheral

Joao Filipe — Mon, 04 May 2020 20:17:05 GMT

Hi, thank you for the response.

This is the relay debug!

And this is the snsr.c debug!

The relay debug stays "Attempt to find HRS or SNSR on conn_handle 0x0" forever and not connect to the snsr.c

Yes, I already had tested and I can confirm to you that my phone can detect and connect to the snsr with nRF connect.

RE: Can't connect central/peripheral relay to peripheral

Amanda Hsieh — Mon, 04 May 2020 17:53:06 GMT

Hi,

[quote user=""]With my phone I can detect and connect to the relay board but that board can´t connect to snsr board.[/quote]

Could you provide the debug log on both sides (relay board and snsr board)? If you use segger, you could enable NRF_LOG_BACKEND_RTT_ENABLED in the sdk_config.h, it will show the log in the RTT window. Before connect to the relay application, could you test your snsr application could advertise and connect with nRF connect on mobile?

In the BLE Relay Example, it uses 2 sensor boards: nRF5 Development Kit board containing the SoftDevice. One of the boards should be running the Running Speed and Cadence Application example. The other one should be running the Heart Rate Application example. Both of these two sensor board examples could connect with nRF connect mobile.

-Amanda H.