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overview
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overview [2019/02/02 16:16] admin |
overview [2019/02/03 14:26] admin |
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| ====== Overview ====== | ====== Overview ====== | ||
| - | The main method for sending data is advertising. A device repeatedly sends out a small amount of data every defined advertising period. This data can be, for example, a unique id, a URL or sensor data. Any Bluetooth LE device can scan for and see the advertising. At this point, there's no connection. Anyone can see the data and the sender doesn't know anything about the receivers. | + | The main method of sending data is advertising. A device repeatedly sends out a small amount of data every defined advertising period. This data can be, for example, a unique id, a URL or sensor data. Any Bluetooth LE device can scan for and see the advertising. At this point, there's no connection. Anyone can see the data and the sender doesn't know anything about the receivers. |
| Once a receiver sees the advertising it can optionally connect via GATT to see what services the sender provides and then connect to the services to update data, for example to configure the sender, or get data that the sender perhaps didn't show in the advertising due to size or privacy. There are standard services defined by Bluetooth profiles. It's also possible to set up services that only allow change of data after the correct password has been sent to another defined service. | Once a receiver sees the advertising it can optionally connect via GATT to see what services the sender provides and then connect to the services to update data, for example to configure the sender, or get data that the sender perhaps didn't show in the advertising due to size or privacy. There are standard services defined by Bluetooth profiles. It's also possible to set up services that only allow change of data after the correct password has been sent to another defined service. | ||
overview.txt · Last modified: 2021/01/07 10:49 by admin