Why am I unable to connect to my TI C2000 target? I get the error: "External Mode Open Protocol Connect command failed Caused by: Could not connect to XCP slave: XCP Master internal error: Busy(0) or no timeout(2) for 255."

I am using a TI Piccolo F280049C board. I have a Simulink model that I am able to build and deploy onto the target. However, when I try to Monitor & Tune, I get the following error:

External Mode Open Protocol Connect command failed

Caused by:
Could not connect to XCP slave: XCP Master internal error: Busy(0) or no timeout(2) for 255
Component: Simulink | Category: Block diagram error
Unable to connect to the 'TI Piccolo F280049C LaunchPad' target for 'SBV_Control_49C_external_v4a'.
Component: Simulink | Category: Model error

Answer 1

[MathWorks Support Team]

The error indicates an issue with the connection to the board. To solve this issue check the COM Port used to communicate with the board. If an Auxiliary port (COM3) is being used, try connecting to a UART port (COM4) and try 'monitor and tune' again.

Ensure the COM port set at 'Configuration Parameters > Hardware Implementation > Target hardware resources > External mode' is the same as the COM port of the serial interface

To ensure other aspects of the board and MATLAB are setup properly, please double check the following:

• Ensure MATLAB Coder, Simulink Coder, Embedded Coder are installed properly.
• Ensure relevant support packages (Embedded Coder Support Package for Texas Instruments C2000 Processor) are installed including required 3rd party software.
• Perform pending updates on Support Packages.
• Check that the model in consideration does not use blocks unsupported for code generation or for deployment in the specified target (here, TI Piccolo F2800049C LaunchPad).