Example: Using a Custom Code Block
The following example uses a System
Start Function block to introduce code into the MdlStart function.
The next figure shows a simple model with the System
Start Function block inserted.
Double-clicking the System Start
Function block opens the System Start Function Custom Code
dialog box.
You can insert custom code into any or all of the
available text fields.
The code below is the MdlStart function
for this example (mymodel).
void MdlStart(void)
{
{
{
/* user code (Start function Header) */
/* System '<Root>' */
unsigned int *ptr = 0xFFEE;
/* user code (Start function Body) */
/* System '<Root>' */
/* Initialize hardware */
*ptr = 0;
}
}
MdlInitialize();
}
The custom code entered in the System Start Function
Custom Code dialog box is embedded directly in the generated code.
Each block of custom code is tagged with a comment such as
/* user code (Start function Header) */
 | Custom Code Library | | Custom Code in Subsystems |  |
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