If beacons are only broadcasters and they can not communicate with iPhone or other devices, How come companies like Estimote, Bluecats provide configurable parameters like Advertising Interval,Broadcasting power etc reflects the change on its battery life.
In recent update they are also providing parameters like smart battery saving and basic battery saving ?
General answer followed by technical terms will be appreciated.
Bluetooth beacons typically implement broadcast-only standards like iBeacon, AltBeacon or Eddystone which use Bluetooth LE advertising with no two-way communication as you suggest.
However, there is nothing in these standards that says that a hardware device that acs as a beacon can't implement two-way communication for other purposes. And that's exactly what most manufacturers do. They implement a custom GATT service that allows read-write access to configuration parameters inside the beacon. This allows an iPhone, Android device, Mac or Windows PC to make a read-write connection to the beacon device and set parameters like advertising interval as well as the beacon identifiers.
You can see an example of such a GATT service in Google's Eddystone Configuration Service.. This is an attempt to standardize the way you configure Eddystone beacons across manufacturers. Similar non-standard GATT configuration services are used by manufacturers supporting the iBeacon format. Some manufacturers publish these GATT service APIs and some do not, keeping the APIs private only for use inside their configuration apps.
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For a project of mine I need a pairless bluetooth data transfer. I have first thought about doing it with BLE IBeacons but they can only advertise a very limited amount of data. I looked further through the Apple documentation and found this tutorial about Central/ Peripheral
BLE data transfer. I've implemented the code in my project but even though the devices were very close together they could not "see" each other. I have since looked up on the Internet and could not find a hint about whether the devices need pairing or not and what the problem of mine could be(the code is not throwing any errors nor warnings).
If it does require pairing, is there some way to do that in the background without requiring the user to perform an action, so that I could theoretically advertise some kind of pair request via. IBeacons to then transfer the data? If that's not the case, is there even a way to transfer data (mono directional, round about 512 bytes) between nearby bluetooth devices without user actions?
greets from germany!
To get started with Bluetooth Low Energy or any other protocol, it's best to learn how it works. At least basics.
Simplifying. BLE allows you to send data:
"Passive" (without conncetion) - over Advertisement Data. The size of the packages depends on the BLE version.
"Active" (requires connection with the device) - bidrirectional comunication. In this case size of the data package also depends on the BLE version.
Bonding and pairing is a separate issues.
I suggested you look at the following book:
https://www.oreilly.com/library/view/getting-started-with/9781491900550/
The websites of BLE module manufacturers also offer a lot of information about this technology. For example Nordic or TI. Very often with sample programs for various platforms.
For iOS:
https://developer.apple.com/videos/play/wwdc2017/712/
https://developer.apple.com/bluetooth/
You may also be interested in sending more data without connection using version BLE 5.0
https://www.bluetooth.com/blog/exploring-bluetooth5-whats-new-in-advertising/
I want to make a IOS device act as a virtual Ibeacon and configure it to google proximaty API.
When I try to configure using google beacon tools. I get "eddystone configuration not supported by the beacon"
Can any one help me to understand on what basis Google says Ibeacon is supported for nearby notifications
Yes, you can use Google's Beacon Tools app to register a virtual iPhone iBeacon transmitter with Google's servers. The problem is that you are misunderstanding the meaning of that error message.
To clarify: The question shows a screenshot of an Android app that has scanned for an iBeacon transmission coming from an iOS device.
Provisioning shows "Eddystone configuration service not supported by this beacon" because that section is used for configuring the beacon over bluetooth using the Eddystone configuration GATT service standard. Because your iPhone doesn't support that GATT service (lots of beacons don't -- not just virtual beacons), you get that error message.
Don't worry, that section is optional.
Just skip it and go down to the next section labelled Registration.
I'm hoping to create a BLE advertisement on iOS where I can control the advertisement on a byte level.
One use case would be to mimic an iBeacon advertisement. What is the iBeacon Bluetooth Profile (I want to advertise while my app is in the background which is why I'm not using CoreLocation)
I do not see a way to do this with the Core Bluetooth API. Is this correct? Are there alternatives using private API's or jailbreaking?
As the others already pointed out, there is no API on iOS that allows you to do this.
You can advertise as an iBeacon, but only when your app is in the foreground. When in background, the advertisement is removed and therefore cannot be discovered anymore (except for other iOS devices which explicitly scan for that service UUID). Also see the documentation here: Core Bluetooth Background Processing
If you would share your use case and what you want to achieve, maybe there are other ways to realise it.
My experience with iOS is that if it is something is not exposed in the API, there is no way around, except jailbreaking. For Bluetooth low energy the API is at GAP/GATT level, and very little at the lower levels (if anything) is exposed. Advertising is a LL (link layer) feature.
To illustrate how restricted the access is: When scanning for BLE devices you will not have access to the advertiser's MAC address iOS. In Android you have it.
I do not see a way to do this with the Core Bluetooth API. Is this
correct?
Since you have to set Manufacture Specific Data in order to achieve this, if nothing has changed you will experience exactly the same issue that I did. Explained here:
The advertisement key 'Manufacturer Data' is not allowed in CoreBluetooth
It is not possible.
I am trying to wrap my head around the possibilities of the HM-10 but am very new to a lot of how it works. I am only familiar with higher level things.
I originally thought I was going to use the hm-10 as an iBeacon but quickly found out it's limitations. Here was the original plan prior:
iBeacon(HM-10) broadcast in a particular room, when I walk in with my iPhone, it detects my iPhone and then does something, i.e Sets one of its Pins to High.
But based on my research now, this is not possible with iBeacon? I need to use iBeacon broadcasting in hand with regular bluetooth?
As in, upon my App/Phone detecting the iBeacon it then pairs with the HM-10 and sends an AT- command to set one of the pins HIGH.
Does all of this make sense? Could anyone provide some more input?
I am in the process of putting together an iPhone App but just wanted to know if I am on the right track.
Since the HM-10 is based on the CC2540, it should be possible to turn it into a Bluetooth LE beacon, including one that supports an iBeacon format.
A few thoughts to help your understanding:
Standard Bluetooth LE beacons (AltBeacon, iBeacon, URL beacon) are transmit only devices that don't detect phones -- phones detect them using a custom app. So when you say "it detects my iPhone and then does something" this is diverging from a standard Bluetooth LE beacon.
The concept of "pairing" with a Bluetooth device is typically related to Bluetooth classic (e.g. pre-4.0) technology. Bluetooth LE devices like the beacons mentioned above have the concept of connecting to read and write GATT characteristics.
If you do build a custom BLE device that out of a HM-10/CC2540, it would be possible to make it "detect" mobile phones, perhaps by advertising a GATT service, and then doing something upon connecting and/or writing to a characteristic. Since the CC2540 contains GPIO pins, it would be possible to make it "do something" by making a pin go high.
There are two big chunks of work to doing what you describe: (1) writing custom firmware for the CC2540 and (2) writing an iPhone app using CoreBluetooth and/or CoreLocation iBeacon APIs. Before starting on the iOS side, you need to figure out how the Bluetooth device is going to work.
I am trying to find a way to access the battery levels from my beacons through an iOS application I am currently working on. I am using Kontakt's iBeacon devices. I browsed the Estimote iOS SDK and they provide a method to achieve this. I was wondering if it is at all able to access the raw beacon packet and manually extract the data since I know the beacon packet structure and the information is there.
Any thoughts on how to achieve this by the method mentioned here or any other way?
Thanks Guys.
This is Rafal from kontakt.io. Firstly, let me thank you for choosing us, it means a lot for us.
Propagation of battery level is not standard for iBeacons nor it is in any official iBeacon documentation, so that is why you cannot find the value using custom SDKs. Our iBeacons are propagating battery level in scan response packet which may be discovered using CoreBluetooth API in iOS. The level is one byte value at the 23rd byte in the packet.
Hope it helps :)
As far as I am aware there is nothing in the iBeacon advertisement itself that contains the battery level. Some beacons may expose additional BLE ATT services that contain this information. You could try using an application like LightBlue from the app store to explore the services available from your devices