Hello Team,
I am using ble_peripheral application to establish ble communication with android. But, for some android devices the application automatically disconnects after 40s. I have attached the following logs from nrf connect. please, let me know what modifications i need to do to fix the issue.
nRF Connect, 2022-08-09
AlveoAir (D1:60:C2:2D:AE:CE)
V 14:39:00.631 Connecting to D1:60:C2:2D:AE:CE...
D 14:39:00.631 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 14:39:00.853 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
D 14:39:00.871 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 14:39:00.871 Connected to D1:60:C2:2D:AE:CE
I 14:39:00.873 MTU changed to: 91
V 14:39:00.876 Discovering services...
D 14:39:00.876 gatt.discoverServices()
V 14:39:00.892 Discovering services...
D 14:39:00.892 gatt.discoverServices()
I 14:39:01.195 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
D 14:39:01.452 [Callback] Services discovered with status: 0
I 14:39:01.452 Services discovered
V 14:39:01.457 Generic Access (0x1800)
- Device Name [R W] (0x2A00)
- Appearance [R] (0x2A01)
- Peripheral Preferred Connection Parameters [R] (0x2A04)
- Central Address Resolution [R] (0x2AA6)
Generic Attribute (0x1801)
- Service Changed [I] (0x2A05)
Client Characteristic Configuration (0x2902)
Secure DFU Service (0xFE59)
- Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)
Client Characteristic Configuration (0x2902)
Unknown Service (f3641400-00b0-4240-ba50-05ca45bf8abc)
- Unknown Characteristic [N R W] (f3641401-00b0-4240-ba50-05ca45bf8abc)
Client Characteristic Configuration (0x2902)
Unknown Service (f3641500-00b0-4240-ba50-05ca45bf8abc)
- Unknown Characteristic [N R W] (f3641501-00b0-4240-ba50-05ca45bf8abc)
Client Characteristic Configuration (0x2902)
D 14:39:01.457 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
D 14:39:01.459 gatt.setCharacteristicNotification(f3641401-00b0-4240-ba50-05ca45bf8abc, true)
D 14:39:01.463 gatt.setCharacteristicNotification(f3641501-00b0-4240-ba50-05ca45bf8abc, true)
W 14:39:41.600 Connection parameters update failed with status 34 (interval: 7.5ms, latency: 0, timeout: 5000ms)
E 14:39:41.602 Error 34 (0x22): GATT CONN LMP TIMEOUT
D 14:39:41.644 [Callback] Connection state changed with status: 34 and new state: DISCONNECTED (0)
E 14:39:41.645 Error 34 (0x22): GATT CONN LMP TIMEOUT
I 14:39:41.645 Disconnected
D 14:39:41.689 [Broadcast] Action received: android.bluetooth.device.action.ACL_DISCONNECTED
D 14:39:56.926 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
D 14:39:56.926 gatt.close()
D 14:39:56.941 wait(200)
V 14:39:57.143 Connecting to D1:60:C2:2D:AE:CE...
D 14:39:57.144 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 14:39:57.164 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 14:39:57.164 Connected to D1:60:C2:2D:AE:CE
I 14:39:57.168 MTU changed to: 91
V 14:39:57.172 Discovering services...
D 14:39:57.172 gatt.discoverServices()
V 14:39:57.177 Discovering services...
D 14:39:57.177 gatt.discoverServices()
I 14:39:57.352 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
D 14:39:57.635 [Callback] Services discovered with status: 0
I 14:39:57.635 Services discovered
V 14:39:57.654 Generic Access (0x1800)
- Device Name [R W] (0x2A00)
- Appearance [R] (0x2A01)
- Peripheral Preferred Connection Parameters [R] (0x2A04)
- Central Address Resolution [R] (0x2AA6)
Generic Attribute (0x1801)
- Service Changed [I] (0x2A05)
Client Characteristic Configuration (0x2902)
Secure DFU Service (0xFE59)
- Buttonless DFU [I W] (8ec90003-f315-4f60-9fb8-838830daea50)
Client Characteristic Configuration (0x2902)
Unknown Service (f3641400-00b0-4240-ba50-05ca45bf8abc)
- Unknown Characteristic [N R W] (f3641401-00b0-4240-ba50-05ca45bf8abc)
Client Characteristic Configuration (0x2902)
Unknown Service (f3641500-00b0-4240-ba50-05ca45bf8abc)
- Unknown Characteristic [N R W] (f3641501-00b0-4240-ba50-05ca45bf8abc)
Client Characteristic Configuration (0x2902)
D 14:39:57.654 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
D 14:39:57.657 gatt.setCharacteristicNotification(f364140
