Device is not advertising when creating custom service using UART service

RE: Device is not advertising when creating custom service using UART service

jaimin — Wed, 03 Jan 2018 11:24:24 GMT

@Ankush I am using Nrf51 board I am trying to add own custom service in ble_app_uart example (with le_enable_params.common_enable_params.vs_uuid_count = 2) and after loading that hex file, module got reset. I have same problem in "err_code = softdevice_enable(&ble_enable_params);" routine . In addition, i have tried your solution to comment #if (NRF_SD_BLE_API_VERSION == 3) but I faced same issue. Kindly provide the solution.

RE: Device is not advertising when creating custom service using UART service

Ankush — Wed, 22 Feb 2017 18:24:28 GMT

Hey Rishi,

Sorry for late reply as I was travelling. I was facing this issue with SDK12.0.0. I commented out following lines in ble_stack_init,

    //#if (NRF_SD_BLE_API_VERSION == 3)
    //    ble_enable_params.gatt_enable_params.att_mtu = NRF_BLE_GATT_MAX_MTU_SIZE;
    //#endif

Hope it will solve your issue. and device will start advertising....

RE: Device is not advertising when creating custom service using UART service

Rishi — Mon, 20 Feb 2017 05:13:17 GMT

Hey @Ankush, What was the solution that helped you solve your problem. I am going through the same issue. Although I have set le_enable_params.common_enable_params.vs_uuid_count = 2 and advertising data using scan response packet, the board is still not advertising.

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Dec 2016 12:14:48 GMT

Hi All,

The issue is solved for SDK12.0.0

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Dec 2016 11:44:09 GMT

Here Code is getting stucked at line

err_code = softdevice_enable(&ble_enable_params);
APP_ERROR_CHECK(err_code);

In ble_stack_init()

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Dec 2016 09:42:10 GMT

Hi,

In new SDK 12.0 I am following the same process to combine to UART services as in SDK11.0. But Even if I set le_enable_params.common_enable_params.vs_uuid_count = 2 , device is not advertising. Is any different configuration required for this SDK12.0 ?

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Sep 2016 17:57:22 GMT

Hi Justin,

In my m_adv_uuids I have only Heart rate, BAS and DIS services. I have commented out NUS characteristics as because of this it was not advertising in my last codes.

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Sep 2016 17:53:53 GMT

Hi Jastin,

Thank you so much for the reply. Yes by changing the count to 2 it starts advertising. I can see the two different services on APP. But when I enable both notification only then I am receiving data using second custom service.
following is the code to send any rough values to custom service from nrf52.

				void send_to_app()
		{
			uint32_t    err_code;
			uint8_t buff[10] = {0x54,0x55,0x55,0x55,0x55,0x55,0x55,0x55};
		//    err_code = ble_nus_string_send(&m_nus, buff, 20);
		//    if (err_code != NRF_ERROR_INVALID_STATE)
		//    {
		//			APP_ERROR_CHECK(err_code);
		//    }		
			err_code = ble_nus_string_send1(&m_nus1, buff, 20);
			if (err_code != NRF_ERROR_INVALID_STATE)
			{
					APP_ERROR_CHECK(err_code);
			}

Here I am using two different functions which points to to two different libraries that I have crested for two services.

When I enable notification of custom service control should transfer to data_handler 1 when send any data data from app. It is not happening.

RE: Device is not advertising when creating custom service using UART service

Justin — Fri, 16 Sep 2016 17:33:36 GMT

I think you're advertising too many characteristics. You only need to advertise the ones you really want to scan for. Change m_adv_uuids to only have the heart rate service

RE: Device is not advertising when creating custom service using UART service

Ankush — Fri, 16 Sep 2016 17:29:46 GMT

Hi Elias,

Thanks for your comment. I agree that it is not possible to go through entire code to resolve the issue. I regret for that. Actually I am trying to use two UART profiles in my code so that I can transfer more number of packets. Through one UART profile I am transferring the 1000 samples per seconds. Using another UART(custom) profile I want to send different packets. What I understand If we change UUID of new service then it should work as different service that we want.(This I tried previously with HRS ad HTS service).

In this case I changed UART service UUID to 0x0004, TX char UUID to 0x0005 and RX char UUID to 0x0006. I had this issue earlier, but at that time execution was stopping at ble_stack_initialization. So after changing clock previous codes worked fine. This time code is stopping at advertising_init function. I am trying to figure out issue.

Please can you give me some suggestion regarding this?

RE: Device is not advertising when creating custom service using UART service

Justin — Fri, 16 Sep 2016 17:25:01 GMT

In ble_stack_init, you need to increase ble_enable_params.common_enable_params.vs_uuid_count when adding a custom service with a 128-bit UUID.

RE: Device is not advertising when creating custom service using UART service

Elias — Fri, 16 Sep 2016 16:58:11 GMT

I don't think it's reasonable to ask someone to try to read through your code itself. Tell us what you've tried, what can't be the problem, any parts that you know are working, etc. Show us that you've put some effort into solving the problem, rather than asking us to be your application programmers.