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Bluetooth Low Energy (a.k.a Bluetooth LE, BTLE, Bluetooth Smart)
Custom GATT Service on iOS
Topic last updated 11 Sep 2017, by 
Max Houghton.
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Max Houghton.
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I am trying to implement my own GATT service for accelerometer values using the nRF52 DK (with accelerometer added), and send the values across using BLE. If I use one of the official GATT services (e.g Health Thermometer), I can read the values no problem. If I try and implement my own service, the iOS CentralManager can connect to the peripheral device (nRF52) but can't discover any services/characteristics. Does anyone have any ideas? Help would be much appreciated! Thanks.