Error(0x85):GATT ERROR

[hucs]

Hi,I have trouble when I try my nRF51822 board with example program of hrs. I use nRF Master Control in my phone to connect with my board.scanning is ok.But when it try to connect, sometimes it can connected with my board, but soon disconnected because of Error(0x85):GATT ERROR. Sometimes this error happened when discovering services. What does it mean? My hardware is based on nRF51822QFAAG2.

[Hung Bui]

Hi Hucs,

Could you try to record a sniffer trace when the issue occurs ? Which phone are you using? and with which Android version ?

Do you have the issue after you turn off and on bluetooth ?

[Gigel]

I get the same error on reconnect. My setup uses a Nexus 5 running Android 5.1.1, build LMY48B, and my embedded device runs S110_nRF51822_7.0.0 (id:0x004f) and app based on SDK 6.1.0 (note: I can't use newer S110 and SDK due to the fact that my nRF51822 is a rev. 2 IC).

I can reproduce the issue from within nRF Master Control app ver 3.1.0. Restarting the Android device and my own nRF51822 device won't help much as the issue reappears.

The services and characteristics discovery works fine, but I get "Error 133 (0x85): GATT ERROR" right after performing a read on a characteristic, and it disconnects.

Any clues why this happens?