Broadcaster mode

RE: Broadcaster mode

venerley — Tue, 23 Jan 2018 17:26:44 GMT

Hi Ole, is there new ble_app_temp.zip there have been a lot of changes since October 2013.

RE: Broadcaster mode

Mich — Thu, 07 Jul 2016 10:06:13 GMT

This is using the Segger firmware and Keil uVision? How about an example using ARM mbed, would this work:

developer.mbed.org/.../main.cpp

...and lastly, does the nRF51-DK board have a thermometer sensor? If it doesn't I'll just wire up a DHT11 (or DHT22) to the GPIO headers.

RE: Broadcaster mode

Giovanni — Fri, 31 Oct 2014 09:53:06 GMT

hi What do I do to make it work with SDK 6.1 and 7.1 soft device? Thank you for your attention Best regards

RE: Broadcaster mode

sushil — Tue, 03 Jun 2014 12:28:37 GMT

Hi Morten, In bluetoothstarter kit provided by Bluetooth SIG ,it is mentioned that any one can create custom profiles/services for their device. So i think it is perfectly fine to create custom services with custom UUIDs. In the service one has to mention all the custom UUIDs of related custom services.

Am I correct? Because in "ble_app_uart" example source code has custom serives.

RE: Broadcaster mode

Ole Morten — Wed, 28 May 2014 11:45:30 GMT

The code is available on GitHub, so I'd recommend you to get it from there: github.com/.../nrf51-ble-app-temp However, I'll look into the link not working as well. Thanks for letting us know!

RE: Broadcaster mode

kchuva — Wed, 28 May 2014 05:57:29 GMT

I join this request. Thanks a lot

RE: Broadcaster mode

jupa — Tue, 27 May 2014 21:27:05 GMT

Would it be possible to renew the link to the example zip file. I am really interested in developing a similar application. Since I am a total beginner it would be very useful for me to start with something working.

Thank you.

RE: Broadcaster mode

Ole Morten — Mon, 16 Dec 2013 12:45:27 GMT

As you can see by looking at the code in ble_advdata.c, the function you've found is the one that will eventually be called, but only after all the data has been encoded appropriately. If you want to use sd_ble_gap_adv_data_set() directly, you'll have to do this encoding yourself, which is quite cumbersome and not something I'd recommend.

RE: Broadcaster mode

sam_football — Thu, 12 Dec 2013 06:13:19 GMT

why not use this method sd_ble_gap_adv_data_set(uint8_t const * const p_data, uint8_t dlen, uint8_t const * const p_sr_data, uint8_t srdlen)? /**@brief Set, clear or update advertisement and scan response data. *

@note The format of the advertisement data will be checked by this call to ensure interoperability.

  Limitations imposed by this API call to the data provided include having a flags data type in the scan response data and

  duplicating the local name in the advertisement data and scan response data.

@note: To clear the advertisement data and set it to a 0-length packet, simply provide a valid pointer (p_data/p_sr_data) with its corresponding
```
   length (dlen/srdlen) set to 0.
```
@note: The call will fail if p_data and p_sr_data are both NULL since this would have no effect.
@param[in] p_data Raw data to be placed in advertisement packet. If NULL, no changes are made to the current advertisement packet data.
@param[in] dlen Data length for p_data. Max size: @ref BLE_GAP_ADV_MAX_SIZE octets. Should be 0 if p_data is NULL, can be 0 if p_data is not NULL.
@param[in] p_sr_data Raw data to be placed in scan response packet. If NULL, no changes are made to the current scan response packet data.
@param[in] srdlen Data length for p_sr_data. Max size: @ref BLE_GAP_ADV_MAX_SIZE octets. Should be 0 if p_sr_data is NULL, can be 0 if p_data is not NULL.
@return @ref NRF_SUCCESS Advertisement data successfully updated or cleared.
@return @ref NRF_ERROR_INVALID_ADDR Invalid pointer supplied.
@return @ref NRF_ERROR_INVALID_FLAGS Invalid combination of advertising flags supplied.
@return @ref NRF_ERROR_INVALID_DATA Invalid data type(s) supplied, check the advertising data format specification.
@return @ref NRF_ERROR_INVALID_LENGTH Invalid data length(s) supplied.
@return @ref BLE_ERROR_GAP_UUID_LIST_MISMATCH Invalid UUID list supplied.
@return @ref NRF_ERROR_BUSY The stack is busy, process pending events and retry. */ SVCALL(SD_BLE_GAP_ADV_DATA_SET, uint32_t, sd_ble_gap_adv_data_set(uint8_t const * const p_data, uint8_t dlen, uint8_t const * const p_sr_data, uint8_t srdlen));

RE: Broadcaster mode

Ole Morten — Wed, 09 Oct 2013 06:25:47 GMT

Actually, it is per the Bluetooth spec not legal to advertise so called service data with a custom UUID, so creating a custom service and advertise like that wouldn't work.

I have however extended my answer above a little, so that you can see how you can use the manufacturer specific data field.

RE: Broadcaster mode

Artem Zemlyanukhin — Tue, 08 Oct 2013 17:59:05 GMT

Thanks a lot!

RE: Broadcaster mode

Shafy — Tue, 08 Oct 2013 16:09:53 GMT

Hi Morten,

In the sample code you have attached, BLE_UUID_HEALTH_THERMOMETER_SERVICE is used for broadcasting the temperature data. So is the broadcasting functionality tied to a service ?

Suppose I want to broadcast the value of ambient light. Do I have to create a custom service for light and use that UUID for broadcast ?

But in the sample code you have provided , I couldnt find any calls to the functions provided by the health thermometer service for initializing the service. Please advise how this works .

Thanks Shafy

RE: Broadcaster mode

Ole Morten — Fri, 04 Oct 2013 13:47:35 GMT

You're quite correct in your assumptions. You can take a look at the attached project for an example of such application.

This one will send advertisement data in the format expected by nRF Temp smart phone application, but the basic principles of how to do non-connectable advertising are the same.

Edit: If the data you want to advertise does not belong to a service, you can use the manufacturer specific data format, like this:


ble_advdata_manuf_data_t manuf_specific_data;
manuf_specific_data.company_identifier = YOUR_BLUETOOTH_ASSIGNED_NUMBER;
manuf_specific_data.data.p_data = YOUR_DATA
manuf_specific_data.data.size = sizeof(YOUR_DATA);
...
advdata.p_manuf_specific_data   = &manuf_specific_data;

The different formats you can use for advertisement data is given in the Core specification, Volume 3, Part C, chapter 18 Appendix C.

Edit 2: I've updated the zip with a new one, including nrf_temp_init().

ble_app_temp.zip

RE: Broadcaster mode

Bastiaan — Thu, 03 Oct 2013 12:56:33 GMT

I have the same need. Very interested in the response.

Thanks, Ryan

RE: Broadcaster mode

Guest — Thu, 03 Oct 2013 12:56:33 GMT

I have the same need. Very interested in the response.

Thanks, Ryan