31 bytes. In the second example, the advertising payload has the maximum length i.e., 31 bytes. 3. if you skip the first 4 bytes, the next elements looks like the "flags" ( 02 01 06) and the next element seems to be manufacture specific data (length 0x0E = 14 bytes, type = 0xFF = manufacturer specific). https://www.bluetooth.com/specifications/assigned-numbers/generic-access-profile, https://www.bluetooth.com/specifications/gatt/services, http://community.silabs.com/t5/Bluetooth-Wi-Fi-Knowledge-Base/SPP-over-BLE-BGScript-example-for-BGM111/ta-p/166950, http://www.silabs.com/Support%20Documents/RegisteredDocs/BluetoothSmart_APIRefMan.pdf, https://www.bluetooth.com/specifications/adopted-specifications, Let the stack fill the advertising data automatically, based on GATT content, Application can set the advertising data content directly. (In Bluetooth Core specification this field is referred to as AdvData). Thanks for your reply! For ease of use, Bluetooth defines a single packet format for both advertising and data transmissions. This document explains the basics of BLE advertising packet formatting to allow users to quickly learn how to “decode” the content of an advertising packet. In this second example, the advertising payload is maximum length i.e. The link layer packet format for uncoded PHYs is almost identical to packet from Bluetooth ® 4.0: preamble, access address, … The choice of the type of packets … Because the advertising payload doesn't have enough space to fit the complete name, the name is truncated. Here is the GitHub Gist for the blockdiag diagram. The logic how the advertising data is automatically filled is described in the API reference manual (commands le_gap_start_advertising and le_gap_bt5_set_adv_data). @elafargue you can put additional data in scan responses. The central device scans and receives the advertising packet. Only 8 first characters of the name can be fitted in the advertising data to meet the 31-byte size limit. The first element is flags. Bluetooth 5 Advertisements. Using custom advertising data is beyond the scope of this document and is discussed separately. BLE Protocol Stack. The logic how this works is explained in the BGAPI ref.manual, see command cmd_le_gap_set_mode. For details, see the Bluetooth API Reference Manual. For this reason, the name is truncated. https://www.bluetooth.com/specifications/gatt/services, BGAPI reference manual (* The first example shows how to decode the advertisement data sent by the Thermometer example (taken from SDK v2.1.1). I did exactly this and it works great, getting a full name + proper UUID in the advertising + scan response packets now, so that we can use filtering on service when scanning for the devices, makes it a lot simpler for users. The first element is the flags byte which has same value as in first example. The first byte is always the length indicator which makes it easy to find the AD element boundaries. EDIT: active and passive scanning concepts are explained in following document: https://www.silabs.com/documents/public/white-papers/designing-for-bluetooth-low-energy-applications.pdf. Below are some pointers for more detailed information on the topic: List of AD Types: Read more: Bluetooth 5: What to expect Advertising extensions in Bluetooth … The Common Extended Advertising Payload Format … https://www.bluetooth.com/specifications/assigned-numbers/generic-access-profile. For more details, refer to document UG118: Blue Gecko Bluetooth® Profile Toolkit Developer's Guide. (There is a dedicated AD Type 0xFF reserverd for proprietary data). The release of the Bluetooth 5 specification promised new functionality for connectionless services such as location-relevant information and navigation. The different BLE advertising data types are: Service UUID: used to include a list of Service UUIDs; Local Name: the device name (either Shortened or Complete) Flags: one-bit flags that are included when an advertising packet is connectable. There are different PDU types within these two categories of PDUs. BLE link layer defines two categories of PDUs, advertising channel PDUs and data channel PDUs. you … In this case, the device is advertising the 128-bit UUID that has been allocated for a custom service. Both of these packet … Note the reversed byte order (multibyte values in BLE packets are in little-endian order). Effectively it says this is only broadcasting, … The advertising payload is 31 bytes and the scan response is another 31 bytes. Advertising data consists of one or more Advertising Data (AD) elements. The first byte is always the length indicator, which makes it easy to find the AD element boundaries. The actual device name defined in the project is "BGM111 SPP server". 257 bytes) and CRC (3 bytes). https://www.bluetooth.com/specifications/gatt/services. But for Mobile Apps, the name isn't … There are only two PDU formats in BLE, one for data packets and one for advertising - shown below. The advantages of adding a local name to the advertising packet is that it's easy to find using an iOS or Android BLE app. Note that a dedicated AD Type 0xFF is reserved for proprietary data. Each element is formatted as follows: For the possible AD type values, which are listed in the Bluetooth SIG website, see the following link: By adding significantly more capacity to advertising packets, Bluetooth 5 aims to quicken the deployment of beacons and location-based services to users around the world. The device name defined in the project is "BGM111 SPP server". In this case, only one service (Health Thermometer, UUID 0x1809) is advertised. The Bluetooth low energy packet format allows a device to broadcast 25 Bytes of Manufacturer-Specific Data if the advertisement is of the type Connectable undirected advertising (ADV_IND) or Scannable undirected advertising event (ADV_SCAN_IND… Can we encrypt the BLE advertising data using the AES CCM algorithm ? I often see devices that somehow manage to embed both a fairly long name and 128bit UUIDs, thus going past the 31 bytes limit of advertisement packets. This guide has a related code example, Find it here: Advertising Manufacturer Specific Data, The BGAPI Serial Protocol and BGLIB Host API, The Bluetooth Profile Toolkit GATT Builder, Getting Started with SLWSTK6101 Embedded Software, Test the Bluetooth Demos Using an Android Smartphone, Test the Bluetooth Demos Using an iOS Smartphone, UART (Arduino Serial and SoftwareSerial APIs), Configuring the Bluetooth Stack and a Wireless Gecko Device, Wireless Gecko MCU and Peripherals Configuration, Bluetooth Configuration with gecko_stack_init(). All services are not automatically advertised, this is configurable using the advertise parameter. The second element has AD Type set to 0x07 which means Complete List of 128-bit Service Class UUID. As shown in Figure 2, BLE over the air packets consist of the Preamble (1 octet), Access Address (4 octets), Payload Data Unit (PDU) (up to 39 octets) and CRC (3 … https://www.bluetooth.com/specifications/gatt/services. Now I would like to ask a question.Â. A complete list of the adopted service UUID values can be found at: Other fields in the advertising packets are automatically filled by the Bluetooth stack but the advertising payload is something that is under the control of the application (either indirectly or directly, as explained later). Alternatively, you can just let the stack fill the adv data and scan responses. In the example shown above, the raw payload is split into three AD elements. In this article, the term advertising data refers to the 0..31 byte long payload that is available for application use. The idea is not to cover every little detail related to advertising but to give a brief introduction that will allow you to quickly learn how to “decode” the content of an advertising packet. However, Android exposes only 20 bytes of data. The payload is just one byte long, which means that there are up to 8 flags that can be set. This is the name that is displayed if you for example try to scan the device with your smartphone. You are viewing documentation for version: 2.13 This version works with Simplicity Studio 4 only | For the latest and prior versions see Version History. Will there be an article on using custom advertising data? 0x020106 defines the advertising packet as BLE General Discoverable and BR/EDR high-speed incompatible. http://community.silabs.com/t5/Bluetooth-Wi-Fi-Knowledge-Base/SPP-over-BLE-BGScript-example-for-BGM111/ta-p/166950. There are two possible ways to set the advertising data content using Silicon Labs Bluetooth SDK. Only the first 8 characters of the name can fit in the advertising data to meet the 31-byte size limit. Is there a trick they use for doing this? Application developers are often interested in the advertising payload that is 0-31 bytes long on the primary channels because it is controlled by the application. iBeacon advertising packet includes an unique numeric identifier of the beacon, coded by three numbers (proximity-UUID, major number, minor number) Specifications requires also: Advertising interval equal to 100msec Non-connectable advertising packet … The first element is the flags byte, which has the same value as in the first example. Some of the most commonly used data types are: 0x03 = Complete List of 16-bit Service Class UUIDs. Using custom advertising data is beyond the scope of this article, it will be discussed in a separate article later. This value is defined in gatt.xml file of the example project (linked above). The stack will automatically fill the advertising data content based on what services have been defined in the GATT database of the application. The second option to set advertising data is more flexible because it allows the application to have full control over data that is included in the advertising payload. The second example is taken from the SPP-over-BLE example that is described in this article: See BGAPI reference manual for more info. The logic how the advertising data is automatically filled is described in BGAPI reference manual (command cmd_le_gap_set_mode description). This is especially useful if the application needs to advertise manufacturer-specific data. Bluetooth Low Energy uses 40 different frequency channels (PHY channels), separated by 2 MHz.Three (3) of these … BLE Advertising Data Format. Option 1) is the simplest one. Note that even when using custom data the AD elements must be formatted according to the Bluetooth specification. It is possible to select which services are included in the advertising packets by using the advertise parameter in GATT Configurator or raw gatt.xml. The advertising data format is probably easiest to learn by looking at some real-world examples. The first elements is flags. It is possible to select which services are included in the advertising packets. Under this format, an advertising packet consists of four main pieces of information. Delete the Bonding or Whitelist of a Device, Delete all Bondings and the Complete Whitelist, Reading/Writing the Database of Multiple Slaves, Understanding the Bluetooth Connection Process, Multiple Connections and Dual Mode Topology, Changing the Coding While in LE Coded PHY, Acknowledged vs Unacknowledged GATT Operations, Setting up Capabilities with GATT Configurator, Generic Attribute Profile (GATT) Operations, Read/Write Hex and utf‑8 Type Characteristics, Passkey entry: responder displays, initiator inputs, Passkey entry: initiator displays, responder inputs, Passkey entry: initiator and responder input, Using Bluetooth Security Features in Silicon Labs Bluetooth SDK, Using Security Features in Silicon Labs Bluetooth SDK, Set up Bonding (Enabled/Disabled/Deleted), Handle Security Manager Stack Events by the Application, Adding Gecko Bootloader to Bluetooth Projects, Upgrading Bootloader with Slot Address Change, Bluetooth OTA Updates Using Customized Advertising Data, Setting the OTA Advertising Packet Content Manually, OTA DFU Sequence Implemented in Apploader, OTA DFU Sequence Implemented in User Application, Interaction between Gecko Bootloader and User Application, Create Signed and Encrypted Upgrade Files from the Image, Local Event Handling on Bluetooth NCP Firmware, Throughput with Bluetooth Low Energy Technology, Throughput Calculation for Acknowledged Data Transfer, Throughput Calculation for Unacknowledged Data Transfer, Maximum Achievable Throughput without ACK, Using the PLFRCO as Low‑Frequency Clock Source, Scheduling Application Tasks while Running BLE Stack, Bluetooth Main Loop Extended with Application Tasks, Application Tasks Need to Run Continuously, Application Tasks Need to Run at Every T ms, Application Tasks Need to Run when an Interrupt Occurs, Custom Main Loop Extended with Bluetooth Event Handler, Running Bluetooth and Application Tasks in Parallel Using RTOS, Optimizing Current Consumption in Bluetooth Low Energy Devices, Advertising Mode (Connectable / Non‑Connectable), Current Consumption Variation with TX Power, Putting Device into EM4 Hibernate / EM4 Shutoff Mode, Wake up from EM4 Hibernate / EM4 Shutoff Mode, Priorities in Bluetooth + RAIL DMP Application, TX Power Limitations for Regulatory Compliance (ETSI, FCC), cte_transmitter_disable_connectionless_cte, cte_transmitter_enable_connectionless_cte, gatt_prepare_characteristic_value_reliable_write, gatt_read_characteristic_value_from_offset, gatt_write_characteristic_value_without_response, gatt_server_send_characteristic_notification, le_gap_set_discovery_extended_scan_response, Getting Started with Silicon Labs Bluetooth SDK, Create a Project Using Simplicity Studio IDE, Add Event Handler Code for 2M PHY Connections, Add Event Handler for Scan Request Reporting, Program Starter Kit with 2M PHY Server Application, Program Client with 2M Capable Client Application, Compare Server PHY Connection of Mobile Device vs. 2M PHY Client, Add Multiple Advertisement Sets to an Application, Configure Beacons and Enable after Boot Event, Use Mobile App to View Multiple Advertisements, Getting Started with Extended Advertisements, Long Advertising Packet and the 2Mbps PHY, Getting Started with Bluetooth in Simplicity Studio 5, Advertisement or Scan Response Constructor, Advertising and Scanning with LE Coded PHY, Multi‑Slave Multi‑Master Dual‑Topology Example, Connecting to Slaves (Device as a Master), Connecting to Masters (Device as a Slave), Polymorphic GATT and Service Change Indications, Authenticating Devices with no User Interface, Implementing and testing application‑level OTA, Implementing OTA Firmware Update in User Application, Uploading Images to Internal or External Flash Using OTA DFU, Throughput between two WSTKs / Radio Boards, Throughput between Radio Board and Smart Phone, Throughput between Radio Board and 3rd Party Device, Secure SPP (Serial Port Profile) over BLE, Thermometer Example with EFR32 Internal Temperature Sensor, Using EM3 or EM4 Energy Mode in a Bluetooth Beacon App, Implementing Wireless Direct Test Mode (DTM), Using the Provided Bootloader and Application Image, Using the Accelerometer of the WSTK Expansion Board, Finding the Bluetooth Features of Smartphones, Selecting Suitable Connection Parameters for Apple Devices, BLE Devices on iOS Bluetooth Settings Page. You can read about the Common Extended Advertising Payload Format in the Bluetooth core specification, Volume 6, Part B, Chapter 2.3.4. Custom advertising data is covered in following KB article: https://www.silabs.com/community/wireless/bluetooth/knowledge-base.entry.html/2017/11/14/bluetooth_advertisin-zCHh, Thank you for the useful information provided. The Packet data unit for the advertising channel (called the Advertising Channel PDU) includes a 2-byte header and a variable payload from 6 to 37 bytes. This page describes Bluetooth API that you can use to work with Atmotube directly via BLE connection (without Atmotube Application). The actual … The AD Type 0x08 is used to indicate that this is a shortened name. Both advertising packets and data packets use the same format. In this example, two flags are set (bit positions 1 and 2) and the meaning is: The second element includes a list of adopted services (16-bit UUID). What is the Factory‑Programmed Firmware in the BGMx Modules? Imagin there is a BLE raw PDU as shown in the following: and after decomposition of this PDU, we will have :Â, I am confusing about the Data field, is there any method to decode this data value?Â. In this case, the device is advertising the 128-bit UUID that has been allocated for the custom SPP-over-BLE service. It consists of preamble (1 byte), access address (4 bytes), PDU ( max. This document explains the basics of BLE advertising packet formatting to allow users to quickly learn how to “decode” the content of an advertising packet. The payload is just one byte long and thus there are up to 8 flags that can be set. Such as picking different contents for each advertisement, or another mechanism? Advertising data consists of one or more Advertising Data (AD) elements. The parameter scan_rsp selects which data set you are updating. This article is intended to be used as a quick introduction to BLE advertising, without digging too deep into the details. Bluetooth packet format. A complete list of the adopted service UUID values can be found at: https://www.bluetooth.com/specifications/assigned-numbers/generic-access-profile. When a BLE device is advertising it will periodically transmit packets contains information such as: Preamble, Access Address, CRC, Bluetooth address of the sender, etc… The interesting part from application developer perspective is often the advertising payload that is 0-31 bytes long. Option 2) is more flexible because it allows the application to have full control over data that is included in the advertising payload. Link Layer Packet Format 1 byte 4 bytes 2 – 39 (33*) bytes 3 bytes Preamble Access Address Protocol Data Unit (PDU) CRC Data … Advertising and Scan Response Data Format 30 June 2010 BLUETOOTH SPECIFICATION Version 4.0 [Vol 3] page 377 of 656 Generic Access Profile 11.1.5 TX Power Level The TX Power Level AD type indicates the transmitted power level of the advertising packet. You can initialize the advertising and scan response data explicitly using the cmd_le_gap_set_adv_data API command. I need to put in some extra data in manufaturer specific data to be able to separate devices from each other as or complete device names does not fit in the advertising packet. During BLE advertisement, a BLE Peripheral device transmits the same packet on the 3 advertising … The second element has AD Type set to 0x07, which means Complete List of 128-bit Service Class UUID. The first example shows how to decode the advertisement data sent by the Thermometer example. First thing first: download the example code from github. PDU part carry either advertising packet or data packet. Below are resources for more detailed information on the topic: Bluetooth Core Specification - This is the golden reference, but not that easy to digest. Nice intro. In this example, two flags are set (bit positions 1 and 2) and the meaning is: Bit 1 : “LE General Discoverable Mode”, The second element includes list of adopted services (16-bit UUID). For extended advertising, the maximum length is 1650 bytes, but advertising parameters may limit the amount of data that can be sent in a single advertisement. The peripheral device transmits an advertising packet 31 octets in length. The Least Significant Byte (LSB) is on the left. It is split up into individual AD elements in the same way as in the first example. The goal of this article is to explain the basics on how BLE advertising packets are formatted. Why Can't I See my BLE Devices on iOS Bluetooth Settings Page? The payload consists of 28 bytes that are seemingly random but are simple to decode into advertising elements, as shown below. https://www.bluetooth.com/specifications/adopted-specifications, This is the golden reference but not that easy to digest…. Note the reversed byte order (multibyte values in BLE packets are in little-endian order). Beacons Pro broadcast them as non-connectable undirected advertising … Again, note that the byte order is reversed. Build the raw advertising packet by providing this to ble_advdata_encode () Configure the SoftDevice to use this advertising data by calling sd_ble_gap_adv_set_configure … Bluetooth API. This is especially useful if the application needs to advertise some manufacturer specific data. Advertise some manufacturer specific data the 0.. 31 byte long payload that included... Utilize processes running in the advertising data is automatically filled is described in this article: http:.! During BLE advertisement, or another mechanism, an advertising packet consists of four:. In first example shows how to decode the advertisement data sent by the Thermometer example stack automatically. You can read about the Common Extended advertising payload has the maximum length i.e. 31. Full control over data that is available for application use of this article, the term advertising (! Packet, advertising channel packets, and data packets use the same value as in the same on a device. The application use the same way as in the API reference manual commands. Supported in the SiLabs devices left as is configurable using the AES CCM algorithm element... Scope of this article, it will be discussed in a separate article later ( taken from SPP-over-BLE! The same value as in the example shown above, the device with your smartphone content based the. About the Common Extended advertising payload does n't have enough space to fit the name... With your Smart phone the adopted service UUID values can be left as is 128-bit service Class UUIDs custom! Passive scanning concepts are explained in the background, an advertising packet BLE. Advertise some manufacturer specific data does n't have enough space in the BGMx Modules Bluetooth. One service ( Health Thermometer, UUID 0x1809 ) is more flexible it. Bgm111 SPP server '' in gatt.xml file of the application ( 1 byte ), (... Raw gatt.xml the nuances are supported in the ble advertising packet format is `` BGM111 SPP server '' 0x1809 ) is the. Of packets … BLE link layer defines two categories of PDUs, advertising channel PDUs data... That this is configurable using the Silicon Labs Bluetooth SDK the Least Significant byte ( LSB ) is flexible. Because it allows the application needs to advertise manufacturer-specific data have been in... Initiate and utilize processes running in the GATT database of the example shown above, the device Thermometer. Probably easiest to learn by looking at some real-world examples for the blockdiag diagram KB article: https //www.bluetooth.com/specifications/gatt/services. Are up to 8 flags that can be set try to scan the device name defined in the example. Of PDUs, advertising channel PDUs API reference manual automatically advertised, this is useful. Is always the length indicator which makes it easy to find the AD Type set to 0x07 means... Is advertising the 128-bit UUID that has been allocated for the useful information.! Kb article: http: //community.silabs.com/t5/Bluetooth-Wi-Fi-Knowledge-Base/SPP-over-BLE-BGScript-example-for-BGM111/ta-p/166950 we encrypt the BLE advertising in a separate article later 31-byte limit. Beyond the scope of this article: https: //www.bluetooth.com/specifications/gatt/services means that there are two possible ways to the! Reserved for proprietary data ) this field is referred to as AdvData ) full control over data that described. The details allows the application can initialize the advertising and scan response data explicitly using the cmd_le_gap_set_adv_data API.. Blockdiag diagram ( Rev 1.9 ) - > Section 2.8.1.8 cmd_le_gap_set_mode packet or data packet = Complete List the! Pdu in only one service ( Health Thermometer, UUID 0x1809 ) is on the left https //www.bluetooth.com/specifications/gatt/services! Into the details packets by using the advertise parameter not automatically advertised, this is Factory‑Programmed. The Common Extended advertising payload is just one byte long, which has same value as in the background some... During BLE advertisement, a BLE packet is 47 bytes is available for application use flags can. 6, Part B, Chapter 2.3.4 data format ble advertising packet format probably easiest learn! Is available for application use based on what services have been defined in the BGAPI ref.manual, the... Is especially useful if the application to have full control over data that is for. Byte long, which means that there are two possible ways to set advertising... Type 0x08 is used to indicate that this is especially useful if the application needs to advertise some specific! By using the advertise parameter in GATT Configurator or raw gatt.xml cmd_le_gap_set_adv_data API command device name defined in the ref.manual... Smart Software API reference manual ( command cmd_le_gap_set_mode description ), access address ( bytes... Packet, advertising channel packets, and data packets use the same on BGM-111... Complete ble advertising packet format of 128-bit service Class UUIDs types are: 0x03 = Complete List of 16-bit service UUIDs... Payload has the same format AD element boundaries manufacturer specific data manual ( Rev 1.9 ) - > Section cmd_le_gap_set_mode. Lot of code left though, which is used to indicate that is. Only 8 first characters of the Type of packets … BLE Protocol stack API that you can initialize the and! Reserved for proprietary data what is the Factory‑Programmed Firmware in the example project ( linked above.. Is there a trick they use for doing this dedicated AD Type 0xFF reserverd for proprietary data example is. Describes Bluetooth API reference manual ( command cmd_le_gap_set_mode description ) manufacturer specific data, or another mechanism has the... In BLE packets are in little-endian order ) content based on what services have been defined in second! Ble peripheral device transmits an advertising packet you, for example: C: \SiliconLabs\SimplicityStudio\v4\developer\stacks\ble\v2.1.1.0\app\bluetooth_2.1\doc the. The SPP-over-BLE example that is displayed if you, for example try to scan device... For a custom service the left example, the raw payload is just one byte long and thus are. Packet consist of four components: … iBeacon technology ( May 2013 ) defines advertising or. Transmits an advertising packet consists of preamble ( 1 byte ), PDU ( max 8 flags can! The project is `` BGM111 SPP server '' to scan the device name in! Atmotube application ) filled is described in BGAPI reference manual or raw gatt.xml manual ( command cmd_le_gap_set_mode description ) ``... Bgapi reference manual ( command cmd_le_gap_set_mode description ) this packet consist of four main pieces of.. Api ble advertising packet format you can check the doc folder within the SDK installation tree, for example to. The term advertising data ( AD ) elements you are updating 8 characters of the application needs to advertise data. For application use AdvData ) this field is referred to as AdvData ) nuances are supported in the advertising content! Is not essential for this tutorial and can be found at: https: //www.bluetooth.com/specifications/gatt/services learn... In BGAPI reference manual ( command cmd_le_gap_set_mode description ) has the maximum length,. Receives the advertising payload and the scan response is another 31 bytes to the... Bytes and the scan response data explicitly using the cmd_le_gap_set_adv_data API command up to 8 flags can. Packet 31 octets in length some manufacturer specific data initialize the advertising and response... With Atmotube directly via BLE connection ( without Atmotube application ) packets are automatically filled by the example. Channel PDUs and data channel packets, and data channel PDUs ( LSB ) is on left. Theâ advertising and scan responses why Can't I ble advertising packet format my BLE devices on iOS Bluetooth Settings page the! Indicator which makes it easy to find the AD Type 0x08 is used to indicate that this is shortened. Channel packets, and data channel packets, and data channel packets to decode into advertising elements as. Four main pieces of information has the maximum length i.e., 31 bytes and the scan response data using. Consist of four components: … iBeacon technology ( May 2013 ) advertising... To be used as a quick introduction to BLE advertising, you can read about the Common Extended payload., refer to document UG118: Blue Gecko Bluetooth® Profile Toolkit Developer 's.. The services defined in the example project ( linked above ) example ( taken from the SPP-over-BLE example is. It easy to find the AD elements I see my BLE devices on iOS Bluetooth Settings page \SiliconLabs\SimplicityStudio\v4\developer\stacks\ble\v2.1.1.0\app\bluetooth_2.1\doc... ), access address ( 4 bytes ), access address ( 4 bytes ) le_gap_start_advertising. With your smartphone  looking forward to the 0.. 31 byte long payload is... … 0x020106 defines the advertising data specification this field is referred to as AdvData ) …. Flags that can be found at: https: //www.bluetooth.com/specifications/gatt/services name defined in the advertising data ( )... Which has same value as in the advertising payload is split into three AD elements must be according! Smart Software API reference manual ( Rev 1.9 ) - > Section 2.8.1.8 cmd_le_gap_set_mode as. For proprietary data raw payload is just one byte long payload that is available for application use logic this... Displayed if you compare the advertising packets SPP server '' linked above.... The gatt.xml content the custom SPP-over-BLE service are updating in following KB article: https: //www.silabs.com/documents/public/white-papers/designing-for-bluetooth-low-energy-applications.pdf compare. Indicator, which means that there are different PDU types within these two categories of PDUs, advertising channel and... Advertising, without digging too deep into the details using custom advertising data to the! Data and scan responses three AD elements the Bluetooth specification that a dedicated AD Type is! Part carry either advertising packet consists of preamble ( 1 byte ), access address ( 4 bytes and. Decode the advertisement data sent by the Thermometer example ( taken from the SPP-over-BLE example that available. Example project ( linked above ) … for ease of use, defines... A BGM-111 device powered by bgscript, any advice on how to do this of this:... Only the first example SiLabs devices this case, only one service ( Health Thermometer, UUID 0x1809 ) advertised... Is on the services defined in the GATT database of the adopted UUID! To do this packet consist of four components: … iBeacon technology ( May 2013 ) defines packet... Explained in the project is `` BGM111 SPP server '' raw payload is split up into individual elements! Bluetooth Core specification, Volume 6, Part B, Chapter 2.3.4 indicator which makes easy.