CC2652R: BLE connect

David Weinzierl

Part Number: CC2652R
Other Parts Discussed in Thread: CC2652P, CC2642R,

I'm trying to get a BLE connection to a custom device using a CC2652P1 MCU. It is advertising as expected and when a connection is attempted I can see (via debugger) that the GAP_LINK_ESTABLISHED_EVENT is sent, followed shortly by a GAP_LINK_TERMINATED_EVENT. When paused the ROV plug-in doesn't find any errors when I do a BIOS -> Scan for errors and I don't see anything that looks bad in the other areas of it that I can tell.

Using:

Code Composer Studio v11.1 (macOS)
simple_peripheral_app_CC26X2R1_LAUNCHXL_tirtos_ccs (with changes in the syscfg for differing pins)
XDCTools 3.61.0.16_core
SimpleLink CC13x2 26x2 SDK, v3.30.0.03

I've also tried with the simple peripheral example from/using the latest version of the SimpleLink SDK (5.40.0.40), but it doesn't even get to the advertisement stage (it hits a fault during startup). The project I'm actually trying to get to work uses the 3.30 SDK (and that project exhibits the same behavior as described initially).

I have read the "Debugging" section of the "SimpleLink CC13x2 / CC26x2 SDK BLE5-Stack User's Guide" and applied what I could. Unfortunately, the UART interface is not working on this board so I'm a bit constrained by needing to set breakpoints to see what is going on.

Do you have any recommendations on how to debug further on this?

over 4 years ago

0 David Weinzierl over 4 years ago

Prodigy 20 points

Sorry. I tagged the wrong part. We are using a CC2652P.

0 Clément over 4 years ago in reply to David Weinzierl

TI__Guru** 101540 points

Hi David,

Thank you for reaching out.

The examples for CC2652R/CC2642R are not compatible with the CC2652P device. I would recommend this piece of documentation for details on the way to evaluate CC2652P.

Best regards

0 David Weinzierl over 4 years ago in reply to Clément

Prodigy 20 points

Hi Clément,

Thank you for the quick response.

I've now tried the CC1352P-4 and CC1352P-2 versions of the simple peripheral examples per that document, in both the v3.30 SDK and v5.40, with the same pin changes and an additional change to the BLE radio config because our board only has a single RF antenna. Unfortunately, all of them are showing the same behavior, with the exception of the v5.40 projects are now acting the same as the v3.30's, but still can't get a connection to them.

Thanks, again.

0 Clément over 4 years ago in reply to David Weinzierl

TI__Guru** 101540 points

Hi David,

Thank you for doing this.

Next step would be to double check the unmodified out of the box example works.

Then, you could try to gather some more information on the issue using our debugging guide. For example, getting the disconnection reason would be really helpful.

To finish, you may want to identify which exact modification triggers the issue. That way we will manage to find a workaround together.

Best regards,

+1 David Weinzierl over 4 years ago

Prodigy 20 points

Hey Clément,

We got our boards to connect. Turned out to be that we don't have an external low speed oscillator and once it was properly set up to use the internal one (and calibrate it) connections started working fine.

Thank you!

0 Clément over 4 years ago in reply to David Weinzierl

TI__Guru** 101540 points

Hi,

Glad you found and fixed the issue, well done!

Thank you for telling us.

Good luck with the project.

Best regards,

Bluetooth®︎

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CC2652R: BLE connect