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labapart / gattlib

Library to access GATT information from BLE (Bluetooth Low Energy) devices
http://labapart.com/
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Connecting taking long time... #228

Open nsnnsn opened 2 years ago

nsnnsn commented 2 years ago

When i use connection = gattlib_connect(NULL, address, GATTLIB_CONNECTION_OPTIONS_LEGACY_DEFAULT); it takes about 4 seconds to connect. When i use the bluetoothctl utility it takes less than 2 seconds.

time bluetoothctl connect XX:XX:XX:XX:XX:XX Attempting to connect to XX:XX:XX:XX:XX:XX [CHG] Device DA:DC:22:B3:94:93 Connected: yes Connection successful real 0m 1.56s user 0m 0.07s sys 0m 0.02s

How can i speed it up ? Rest is working ok...

felwiz commented 2 years ago

I also am having this problem. Have you found a solution?

SunilKS-nd commented 8 months ago

Try changing the gattlib_connect options.

i.e. GATTLIB_CONNECTION_OPTIONS_LEGACY_DEFAULT expands to 

#define GATTLIB_CONNECTION_OPTIONS_LEGACY_DEFAULT \
        GATTLIB_CONNECTION_OPTIONS_LEGACY_BDADDR_LE_PUBLIC | \
        GATTLIB_CONNECTION_OPTIONS_LEGACY_BDADDR_LE_RANDOM | \
        GATTLIB_CONNECTION_OPTIONS_LEGACY_BT_SEC_LOW

Try combinations like : 

gattlib_connect(NULL, address,
                GATTLIB_CONNECTION_OPTIONS_LEGACY_BDADDR_LE_RANDOM |
                GATTLIB_CONNECTION_OPTIONS_LEGACY_BT_SEC_LOW);

Let me know if it has improved.