MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guia do Utilizador descarregar pdf (Página 193)

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System Stack Profiling

Profiling System Stack Use

To proﬁle the system stack operation, perform these tasks i n order:

1 Load an application.

2 Set up the stack to enable proﬁ ling.

3 Run your application.

4 Request the stack proﬁle information.

Note If your application initializes the stack with known values when you

run it, stack usage is reported as 100%. The value does not correctly reﬂect

the stack usage. For example, DSP/BIOS writes a ﬁxed pattern to the stack

(

0x00C0FFEE) when you run your project. This pattern prevents the stack

proﬁler from reporting the stack usage correctly. Disable DSP/BIOS to use

stack proﬁling in your project development.

Follow these steps to proﬁle the stack as your application interacts w ith it. In

this example,

cc is an existing ticcs object.

1 Load the a pplication to proﬁle.

2 Use the profile method with the setup input keyword to init ia li ze the

stack to a known state.

profile(cc,'stack','setup')

With the setup input a rgument, profile writes a known pattern into the

addresses that compose the s tack. For C6000 processors, the pattern is A5.

For C2000 and C5000 processors, the pattern is A5A5 to account for the

address size. As long as your application does not write the same pattern to

the s ystem stack,

profile can report the stack usage correctly.

3 Run your application.

4 Stop your running application. Stack use results gathered from an

application that is running may be incorrect.

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