Hi Abdelaaziz,
As per my understanding, you are using Dashboard blocks in Simulink to control a model on Arduino and TI C2000 in real-time and want to add visual elements like Gauges for better output viewing, instead of just using Display blocks.
There should be a connection to a suitable port for reading data, I suggest you to go to the host model and click on the data receive blocks, right click -> block parameter -> select the required port.
Dashboard blocks do not use ports to connect to model elements. To connect a dashboard block, use connect mode. To enter connect mode on an unconnected block, pause on the block you want to connect and click the Connect button .
Please refer to the documentation about Connecting Dashboard Blocks to Simulink Model for more information:
I hope this helps!
