python - How to enable the "Service Changed Inidcation"(0x2A05) on the GATT server?

Question

We're working on BlueZ 5.48. We implemented a GATT server on the embedded Linux in Python. Here is the sample code: example-gatt-server

We found an issue: after the firmware is upgraded, the cached attributes caused the app crash if some characteristics are changed.

We learnt "Under BLE standard 'Generic Attribute' (0x1801), there is a Characteristic 'Service Changed' (0x2A05) with 'indicate' property"(link).

How to enable the "Service Changed Inidcation"(0x2A05) on the GATT server? Is there any code example? Are there any other solutions for this problem?

Thanks in advance!

question from:https://stackoverflow.com/questions/65835507/how-to-enable-the-service-changed-inidcation0x2a05-on-the-gatt-server

Answer 1

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