Set Run in Kernel Mode (External Mode) Scope Parameters

Step 3 of 6 in Real-Time Execution in Run in Kernel Mode

• 2
• 3
• 4

Connected IO mode and accelerator modes run the simulation algorithm in Simulink^® and access the external hardware by using drivers running in operating system kernel mode. The Simulink block diagram is a user interface to your real-time application.

Run in Kernel mode connects your Simulink model to your real-time application. You can use the Simulink block diagram as a user interface as you can in Connected IO mode or accelerator mode.

This procedure uses the model sldrtex_model. To open this model, in the MATLAB^® Command Window, type:

openExample('sldrtex_model')

It assumes that you have already loaded that model.

After you have created a real-time application, you can enter scope parameters for signal tracing with Simulink Run in Kernel mode:

1. In the Simulink Editor, on the Desktop Real-Time tab, click Prepare > Hardware Settings.

2. In the Configuration Parameters dialog box, select the Code Generation > Simulink Desktop Real-Time node.

3. If you select the External mode check box, your changes affect the real-time application.

   Check that the MEX-file name label has an entry of sldrtext. The MEX-file sldrtext.mex* is supplied with the Simulink Desktop Real-Time™ software. This file works with Simulink Run in Kernel mode and supports uploading signal data and downloading parameter values.

   Click OK.

   

4. In the Simulink Editor, on the Desktop Real-Time tab, click Prepare > Control Panel. In the External Mode Control Panel, click the Signal & Triggering button.

5. Select the Select all check box. From the Source list, select manual. From the Mode list, select normal.

   The X under Signal selection indicates that a signal is tagged for data collection. T indicates that the signal is tagged as a trigger signal.

6. In the Duration field, enter the number of sample points in a data buffer. For example, to specify a sample rate of 1000 samples/second and a stop time of 10 seconds, enter:

   10000
   

7. Select the Arm when connecting to target check box.

   If you do not select this check box, data is not displayed in the Scope window.

   

8. Click Close.