DocID026482 Rev 1

11/24

AN4515

Application Overview

23

1.3.4

This section gives an overview of the steps required to execute part of the application code

from RAM using Keil MDK-ARM toolchain.

Executing a source file from RAM

Executing a source file from RAM means that all the functions declared in this file will be

executed from RAM area.

Follow the steps below to execute a file from RAM (see Figure 6):

1.

Right click the file to place it in RAM and select Options.

2.

Select the RAM area in the Memory Assignment menu.

Figure 6. MDK-ARM file placement

Executing an interrupt from RAM

The following steps are required to execute an interrupt handler from RAM:

1.

Make a second vector table and save it in a new file (startup_stm32f411xe_ram.s) that

will be saved in RAM.

2.

Place the interrupt handler to be executed from RAM in a new file named

stm32f4xx_it_ram.c.

3.

Place the required files in the right RAM area in the scatter file (see Figure 7).