STM32F MAT Target

Hello,

I can´t connect, as soon as I uploaded the .bin file created with Makefile, Simulink to my STM32F4 nucleo board.

Error occurred while executing External Mode MEX-file 'ext_serial_win32_comm':

Failed to connect to the target. A time-out occurred while waiting for the connection response from the target. Possible reasons for the time-out:

a) The target is not switched on.

b) The target is not connected to your host machine.

c) The application for the model is not running on the target. You might have clicked the Stop button. If the Run button is not dimmed, click it. Otherwise, click the Build button, which downloads and runs your application on the target

When I do that by using Keil IDE, it works fine as expected.

Anyone has any suggestions?

Thank you

Regards

Dav