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@@ -15,6 +15,29 @@ If **CTS** is detected, it'll request the current time to the companion applicat ![BLE connection sequence diagram](ble/connection_sequence.png "BLE connection sequence diagram") +## BLE UUIDs +When possible, InfiniTime tries to implement BLE services defined by the BLE specification. + +When the service does not exist in the BLE specification, InfiniTime implement custom services. As all BLE services, custom services are identified by a UUID. Here is how to define the UUID of custom services in InfiniTime: + +``` + - Base UUID : xxxxxxxx-78fc-48fe-8e23-433b3a1942d0 + - Service UUID : SSSS0000-78fc-48fe-8e23-433b3a1942d0 where SSSS is the service ID + - Characteristic UUID : SSSSCCCC-78fc-48fe-8e23-433b3a1942d0 where CCCC is the characteristic ID for the service SSSS and is different than 0 +``` + +The following custom services are implemented in InfiniTime: + + - Since InfiniTime 0.8: + ``` + * Music Service : 00000000-78fc-48fe-8e23-433b3a1942d0 + ``` + + - Since InfiniTime 0.11: + ``` + * Navigation Service : 00010000-78fc-48fe-8e23-433b3a1942d0 + ``` + ## BLE services [List of standard BLE services](https://www.bluetooth.com/specifications/gatt/services/) |