DocID026482 Rev 1

13/24

AN4515

Application Overview

23

1.3.5

How to execute code from RAM using IAR-EWARM toolchain

Executing code from RAM

This operation requires a new RAM0 section to be defined in the linker file (.icf) (see

Figure 9). The required steps are the following:

1.

Define the address area for RAM0 by indicating the start and end addresses.

2.

Tell the linker to copy at startup the section named ‘ram0’ from Flash memory to RAM0.

3.

Indicate to the linker that ram0 code section should be placed in the RAM0 area.

Figure 9. Update of EWARM linker

Executing a source file from RAM

To execute a source file from RAM use the file Options window:

1.

Select Options from the displayed menu.

2.

Select C/C++ Compiler

3.

Check override inherited settings from the displayed window.

4.

Select the output tab and type the name of the section already defined in the linker file

(.ram0 in this example) in the Code section name field.