I am running ble_app_blinky example on nRF5280 custom board, it is giving me
Error 133 (0x85): GATT ERROR
. Since I have nrf52DK, I tried same example with SD 132 on nrf52832 it works as expected.
I went through devzone and there are many questions with similar issues but couldn't find a solution.
Could you please let me know what could be reason for the same?
https://devzone.nordicsemi.com/f/nordic-q-a/32590/error-133-0x85-gatt-error-with-htc-u11-life
https://devzone.nordicsemi.com/f/nordic-q-a/33313/android-gatt-133-error
SDK 15.2.0
SD 140
nRF52840
Tried on Honor 7X (Android 8.0.0), Redmi Note 4 (Android 7.0),
nRF Connect, 2019-04-24
Nordic_Blinky (XX:XX:XX:XX:XX:XX)
V 16:07:10.488 Connecting to XX:XX:XX:XX:XX:XX...
D 16:07:10.488 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 16:07:19.253 [Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
E 16:07:19.253 Error 133 (0x85): GATT ERROR
I 16:07:19.253 Disconnected
D 16:07:21.850 gatt.close()
D 16:07:21.854 wait(200)
V 16:07:22.056 Connecting to XX:XX:XX:XX:XX:XX...
D 16:07:22.057 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 16:07:52.111 [Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
E 16:07:52.111 Error 133 (0x85): GATT ERROR
I 16:07:52.111 Disconnected
D 16:07:54.117 gatt.close()
D 16:07:54.120 wait(200)
V 16:07:54.321 Connecting to XX:XX:XX:XX:XX:XX...
D 16:07:54.322 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 16:08:09.849 [Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
E 16:08:09.850 Error 133 (0x85): GATT ERROR
I 16:08:09.850 Disconnected
D 16:08:14.775 gatt.close()
D 16:08:14.779 wait(200)
V 16:08:14.982 Connecting to XX:XX:XX:XX:XX:XX...
D 16:08:14.982 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 16:08:15.541 [Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
E 16:08:15.541 Error 133 (0x85): GATT ERROR
I 16:08:15.541 Disconnected
00> <info> app: Template example started.
00> <info> app: Fast advertising.
00> <info> app: Connected.
00> <info> app: Fast advertising.
00> <info> app: Disconnected.
And the Nordic documentation doesn't seem too clear in answering the question,
"What do I need to do for an application with no external 32KHz crystal?"
For instance, in this thread, it took two posts…
awneil said: Perhaps Nordic could do better to highlight the issue ?
I think if someone mentions custom board or module it is better to ask about clock settings first, it would help a lot.
Seeing as this is a custom board I would like to have a look at your schematics, just to make sure everything is set up correctly. If you don't want to share the schematics on DevZone, I can set this case to private mode, so that only you and Nordic engineers will be able to see it.
Best regards,
Simon
Hello,
I tried with Laird’s BL654 module, it is working fine for peripherials example but not for BLE examples.
Attached is the schematics for the same.
Regards
Schematics%20-%20DVK-BL654%20v1.0.pdf
I thought you were using a custom (self made) chip, but when using an official module there shouldn't be any problems like this. Are you concealing the module in some way that might compromise the antenna? Have you, or do you have the opportunity to, test on more phones? The GATT error 0x85 is often related to Android phones, and specifically the bonding and/or connection intervals. Do you use bonding in your application?
You could also try adding some delays (buffers) after connection, to try and prevent this timeout, but this is not guaranteed to work. Also, what is your MAX_MTU_SIZE set to?
Best regards,
Simon
Sorry for the delay.
