visible (MATLAB Link for Code Composer Studio Development Tools)

MATLAB Link for Code Composer Studio Development Tools

Set whether CCS IDE window is visible while CCS is running

Syntax

```
visible(cc,state)
```

Description

visible(cc,state) sets CCS IDE to be visible or not visible on the desktop. Input argument state accepts either 0 or 1 to set the visibility. Setting state equal to 0 makes CCS IDE not visible on the desktop. However, the CCS IDE process runs in the background while the window is not visible. Running CCS IDE without making it visible lets you use the CCS IDE functions from MATLAB, without interacting with CCS IDE. If you need to interact with CCS IDE, set state equal to 1. This makes CCS IDE visible and you can use the features of the user window.

An important feature of visible is that it creates a new link to CCS IDE when you change the IDE visibility. As a result, after you use

```
visible(cc,state)
```

to make CCS IDE show on your desktop, the MATLAB clear all function does not remove the visibility handle. You must remove the handle explicitly before you use clear.

To see the visibility difference, open Code Composer Studio and use Windows Task Manager to look at the applications and processes running on your computer. When CCS IDE is visible (the normal startup and operating mode for the IDE), CCS IDE appears listed on the Applications page of Task Manager. And the process cc_app.exe shows up on the Processes page as a running process. When you set CCS IDE to not visible (state equal 0), CCS IDE disappears from the Applications page, but remains on the Processes page, with a Process ID (PID), using CPU and memory resources.

Note When you close MATLAB while CCS IDE is not visible, MATLAB closes CCS if it launched the IDE. This happens because the operating system treats CCS as a subprocess in MATLAB when CCS is not visible. By having MATLAB close the invisible IDE when you close MATLAB, you do not need to worry about CCS being left open with no way to close it without using Windows Task Manager. If CCS IDE is not visible when you open MATLAB, closing MATLAB leaves CCS IDE running in as invisible state. More directly, MATLAB leaves CCS IDE in the visibility and operating state in which it finds it.

Examples

Test to see whether CCS IDE is running. Then change the visibility and check again. Start by launching CCS IDE. Then open MATLAB and at the prompt, type

cc=ccsdsp

CCSDSP Object:
  API version     = 1.0
  Processor type  = C67
  Processor name  = CPU
  Running?        = No
  Board number    = 0
  Processor number= 0
  Default timeout = 10.00 secs

RTDX Object:
  Timeout:  10.00 secs
  Number of open channels: 0

MATLAB creates a link to CCS IDE and leaves CCS IDE visible on your desktop.

```
isvisible(cc)

ans =
     1
```

Now, change the visibility state to 0, or invisible, and check the state.

visible(cc,0)
isvisible(cc)

ans =
     0

Notice that CCS IDE is not visible on your desktop. Recall that MATLAB did not open CCS IDE. When you close MATLAB with CCS IDE in this invisible state, CCS IDE remains running in the background. The only ways to close it are either

Launch MATLAB. Create a new link to CCS IDE. Use the new link to make CCS IDE visible. Close CCS IDE.
Open Windows Task Manager. Click Processes. Find and highlight cc_app.exe. Click End Task.

See Also
isvisible, load

symbol write