CC2650 Never gets the GAP Link Terminated HCI Event (0x606) when using the Host Test Example

franchise98bn

Intellectual 290 points

Other Parts Discussed in Thread: CC2650

I'm working with the CC2650 Host Test SPI Example with the CC2650 configured as a peripheral.

I have activated the following build options for the TI Bluetooth stack:

-DHOST_CONFIG=PERIPHERAL_CFG

-DGAP_BOND_MGR

When my iPhone device connects to the CC2650 I get the GAP Link Established Event (0x605) sent to my external MCU.

I then perform a paring and bonding.

When my iPhone device disconnects I do not get the GAP Link Terminated Event (0x606) sent to my external MCU.

Is this the correct HCI event to check for when a device breaks its Bluetooth connection with the CC2650?

over 10 years ago

0 Tim C over 10 years ago

TI__Mastermind 34660 points

Yes that's correct. I don't see how you would not be getting it however. Are you sure the iPhone is disconnecting. I've seen the connection remain even though the app is closed. Can you try shutting the phone off to verify?

0 franchise98bn over 10 years ago in reply to Tim C

Intellectual 290 points

Hi Tim.
I connected and got the GAP Link Established Event (0x605) sent to my external MCU.
I then shut the phone down.
I still did not get the GAP Link Terminated Event (0x606) sent to my external MCU.

0 franchise98bn over 10 years ago in reply to franchise98bn

Intellectual 290 points

Do I need to send a GAP Terminate Link Request (0xFE0A) in order to get the GAP Link Terminated Event (0x606)?
My Host Test project has configured the CC2650 as a peripheral.

0 franchise98bn over 10 years ago in reply to franchise98bn

Intellectual 290 points

From further testing it looks like the CC2650 goes to a standby mode after my phone disconnects its Bluetooth connection from the CC2650.

I try toggle the MRDY line and the SRDY line stays high, the NPITASK_MRDY_EVENT never gets posted for the NPITask_process() function to process.

0 Tim C over 10 years ago in reply to franchise98bn

TI__Mastermind 34660 points

No, you don't need to send any commands: this event is returned asynchronously. It sounds like there may be a SPI handshaking problem. Can you post a logic capture of the SPI lines when the disconnection occurs?

0 franchise98bn over 10 years ago in reply to Tim C

Intellectual 290 points

I scoped out the MRDY, SRDY, SPI Clock, MISO and MOSI lines and I'm not seeing any output from the CC2650.

I particular the SRDY is not being set low by the CC2650.

While using the IAR debugger it looks like my Host Test project is stuck in a while loop when I disconnect.

When Iook at the IAR Debug log it looks like a I have a CSTACK problem with my Host Test project. This might be my problem.

See below.

0 franchise98bn over 10 years ago in reply to franchise98bn

Intellectual 290 points

I fixed my problem.
I had not initialized the linkDBNumConns global variable to valid value using the linkDB_NumConns() function. This was causing my CSTACK problem.
Thanks for your help.

Bluetooth®︎

Bluetooth forum

CC2650 Never gets the GAP Link Terminated HCI Event (0x606) when using the Host Test Example