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CC2652R: CC2652R: GAP Link Establish Request Timeout Error while trying to connect with simple peripheral off-chip program

Part Number: CC2652R
Other Parts Discussed in Thread: UNIFLASH

Hello,

I am new to using LAUNCHXL-CC265xR1 development kit, with CC2652R1 MCU.

I have installed CCS 11.0.0 and SimpleLink CC13x2 26x2 SDK (5.20.00.52).

When I tried to perform an OAD over BLE using BTool, I was not able to establish the connection of the LaunchPad with Host test program with another with simple peripheral off-chip program.

I tried the steps of Setting up the BLE OAD Environment, Performing a BLE OAD and Running the OAD Demo:

  1. Build (in CCS) and flash (with Uniflash) the project simple peripheral off-chip.
  2. Build and debug bim off-chip project with CCS.
  3. Build (in CCS) and flash (with Uniflash) the  host_test in a second LaunchPad.
  4. Connected LAUNCHXL-CC265xR1 to my system and opened BTool (available in SimpleLink CC13x2 26x2 SDK (5.20.00.52) tools subfolder)
  5. Established serial port connection in BTool and scanned for the board (Scan was successful) 
  6. Select the Slave BDA address of the LaunchPad with simple peripheral off-chip
  7. Established connection after entering the device address under the Discover/Connect tab in BTool
  8. The following error appears:

[28] : <Warning> - 08.53.09.271
GAP Link Establish Request Timeout

Anyone can help me?

Thanks in advance. 

  • Hey Renata,

    I apologize for this issue you are seeing. After doing steps 1-3, can you perform a hard reset by hitting the reset button on your launchpad? If the setup was successful, the project should reset successfully.

    I was able to verify functionality of the default examples, using the precompiled .hex files in the examples\rtos\CC26X2R1_LAUNCHXL\ble5stack\hexfiles directory for the BIM and host test  . Note you can simplify the steps by flashing both the BIM and the application binary at the same time, since Uniflash lets you flash a .bin and a .hex together.

    Also, in case you are not aware: SDK 5.30 has been released and is available here: https://www.ti.com/tool/SIMPLELINK-CC13XX-CC26XX-SDK . If you are starting a new project, I would port now before you continue developing to make use of the most recent features/bug fixes.

  • Hi Ammar,

    I tested your suggestions: I simplify the steps by flashing both the BIM and the application binary at the same time, and I employ SDK 5.30. 

    However, the error persists.  

    [36] : <Warning> - 10.49.18.921
    GAP Link Establish Request Timeout

    Do you have any other suggestions on what can I do?

  • Hey Renata,

    Can you see what the output is on the terminal window for the simple_peripheral target device? Can you attach the full BTOOL log?

    Can you try to connect using a smartphone? You can try to use TI's Simplelink Starter app to perform an OAD also, however there is currently an open bug with the default images provided by the app. If you choose to try an OAD with the mobile app, please upload a new custom FW image. But let's start by verifying you can maintain a connection with the target.