Not able to connect in whitelist advertisement when devices are Bonded

Vikas R J

Part Number: CC2650

Tool/software:

Hi Everyone,

I am working on implementing secure channel prototype in CC2650 launchpad and i use the simpeBLEPeripheral project from SDK v2.02.08.12 .

pairing and bonding works as expected. i just verified using GAPBOND_BOND_COUNT parameter when smartphone is already bonded.

Added GAP paramter where the filter policy is set to 'accept connection from bonded devices' inside SP_WhitelistAdvHandler() function

uint8_t advFilterPolicy = GAP_FILTER_POLICY_WHITE_CON; //Allow Scan Request from Any, Connect from White List Only
GAPRole_SetParameter(GAPROLE_ADV_FILTER_POLICY, sizeof(uint8_t), &advFilterPolicy);
In addition i am using GAPBOND_AUTO_SYNC_WL where it Clears the White List adds to it each unique address stored by bonds in NV

Now Once i bond with smartphone and try to connect in whitelist i am not able to connect

if i comment out filter policy i can connect without issues

Question : Any other configurations i should add to whitelist entries

Below is my test scenario

Press BT1: pairable adv enabled (SP_PairableAdvHandler())
- Unbonded smartphone connect, pair and bond - working as expected
Press BT2: whitelist adv enabled (SP_WhitelistAdvHandler())
- Only Bonded smartphone shall connect - not working
- Unbonded smartphone should not connect - working as expected

8 months ago

0 Jan 8 months ago

TI__Mastermind 42100 points

Hi,

Thank you for reaching out. Does the connection establish and then terminate or does the connection fail to establish at all? Do you have access to a Bluetooth LE sniffer? If so, then could you take a sniffer log of the behavior?

Best Regards,

Jan

0 Vikas R J 8 months ago in reply to Jan

Prodigy 50 points

Hi Jan,

Answer to your question: in whitelist advertisement, always connection fail to establish

Below i have provided the Bluetooth LE sniffer log screenshots of connection attempt :

connection in pairable adv mode
- Nrf connect app: pairing and bonding is successful.
connection in whitelist adv mode
- Nrf connect app: connection for already paired and bonded device is rejected
Test phone Vivo Y73 (13)
- Same behavior even in Galaxy M14 (13)

0 Jan 8 months ago in reply to Vikas R J

TI__Mastermind 42100 points

Hi,

Thank you for clarifying. Can you try adding the device to the white list after the bonding completes using the procedure shown in the link below?

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/458197/adding-devices-into-the-white-list

Best Regards,

Jan

0 Vikas R J 8 months ago in reply to Jan

Prodigy 50 points

Hi Jan,

I followed the same but still connection fail to establish in whitelist advertisement

below is the screenshot

i have defined peerAddr instead of bdAddr since i was getting compilation error in import file of bdAddr

uint8_t peerAddr[B_ADDR_LEN] = { 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa };

0 Jan 8 months ago in reply to Vikas R J

TI__Mastermind 42100 points

Hi,

Thank you for checking! Are you setting the peerAddr to the connected address before calling the whitelist command?

Best Regards,

Jan

0 Vikas R J 8 months ago in reply to Jan

Prodigy 50 points

Hi Jan,

i tried even setting the peerAddr to connected address , i refereed your comment from this ticket https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1373648/cc2651r3-previously-bonded-devices-can-not-connect-in-whitelist-mode

below is the screenshot how i implemented

filterpolicy "GAP_FILTER_POLICY_WHITE_CON" i have handled in SP_WhitelistAdvHandler()

Still bonded devices are not able to connect in whitelist and also tried reverting to old sdk v2.02.07.06 still the behavior is same

0 Jan 7 months ago in reply to Vikas R J

TI__Mastermind 42100 points

Hi,

Can you confirm if the address is inverted? It should look like the address in the E2E thread shown below:

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/710054/ccs-cc2650-how-can-add-mac-address-of-some-devices-to-the-whitelist

Best Regards,

Jan

0 Vikas R J 7 months ago in reply to Jan

Prodigy 50 points

Hi Jan,

My issue got resolved, we enabled -DBLE_V42_FEATURES=PRIVACY_1_2_CFG in build_config.opt file,
now only bonded devices can connect in whitelist advertisement, Tested both in android and iOS

i only use below configurations for whitelist to work, nothing else

uint8_t advFilterPolicy = GAP_FILTER_POLICY_WHITE_CON; //Allow Scan Request from Any, Connect from White List Only
GAPRole_SetParameter(GAPROLE_ADV_FILTER_POLICY, sizeof(uint8_t), &advFilterPolicy);
In addition i am using GAPBOND_AUTO_SYNC_WL where it Clears the White List adds to it each unique address stored by bonds in NV

Moreover we are not manually adding mac addresses into whitelist. since we will be connecting with many smartphones

Thanks for the support

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Not able to connect in whitelist advertisement when devices are Bonded