simulink arduino wifi connection problem (external mode)

Hi,

I am trying in a simple simulink model to set up connection with arduino nano 33 IoT and Simulink to monitor variable via wifi (external mode).

Building is ok but I am consitently getting this error at the end:

Error:External Mode Open Protocol Connect command failed

Caused by:

Could not connect to target application: XCP TCP/IP error: Connect failed

Any suggestions? I verified all connection parameters

Thanks,

Answer 1

[Ayush]

Hi Paul,

I understand you’re seeing a connection error when using External Mode with your Arduino Nano 33 IoT.

The specified error usually indicates an issue with the connection to the board. Please try the following steps:

• Make sure you are using the correct COM port to communicate with the board. If an auxiliary port (e.g., COM3) is being used, try switching to a UART port (e.g., COM4) and attempt 'Monitor & Tune' again.
• Match COM Port in Simulink:Ensure the COM port set in "Configuration Parameters > Hardware Implementation > Target hardware resources > External mode/Connectivity" matches the COM port of your Arduino in Device Manager.

Also, please verify the following:

• Ensure MATLAB Coder, Simulink Coder, and Embedded Coder are installed properly.
• Confirm all relevant support packages for Arduino are installed and up to date, including any required third-party software.

Hope this helps!