5

Getting started with STM32CubeU5

5.1

Running a first example

This section explains how simple it is to run a first example on an STM32U5 series board. The program simply

toggles an LED on the NUCLEO-U575ZI-Q board:

Download the STM32CubeU5 MCU package. Unzip it into an appropriate directory. Make sure the package

structure shown in Figure 4 is not modified. Note that it is also recommended to copy the package as close as

possible to the root volume (for example C\ST or G:\Tests) because some IDEs encounter problems when the

path length is too long.

5.1.1

Running a first TrustZone-enabled example

Before loading and running a TrustZone-enabled example, it is mandatory to read the example readme file for any

specific configuration. It insures that the security is enabled as described in section 4.2.1 (TZEN=1 (user option

byte)).

1. Browse to \Projects\NUCLEO-U575ZI-Q\Examples.

2. Open \GPIO, then \GPIO_IoToggle_TrustZone folders.

3. Open the project with the preferred toolchain. A quick overview on how to open, build, and run an example

with the supported toolchains is given below.

4. Rebuild in sequence all secure and nonsecure project files and load the secure and nonsecure images into

target memory.

5. Run the example: on a regular basis, the secure application toggles LED1 every second and nonsecure

application toggles LED2 twice as fast (for more details, refer to the example readme file).

To open, build and run an example with the supported toolchains, follow the steps below:

•

EWARM

1. Open \EWARM subfolder under the example folder.

2. Launch the Project.eww workspace.

3. Set the "xxxxx_S" as an active application (right click on xxxxx_S project set as active).

4. Rebuild the xxxxx_S secure project files: Project → Rebuild all.

5. Rebuild the xxxxx_NS nonsecure project files: Right click on xxxxx_NS project → Rebuild all.

6. Flash the secure and nonsecure binaries with the download and debug button (Ctrl+D).

7. Run program: Debug → go(F5).

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Getting started with STM32CubeU5

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