XMC™ MCU: Pseudo random number generation (PRNG)

This code example demonstrates how to generate a random number of 10 in length with the pseudo random number generation feature in XMC™ 1000. The generated numbers are then displayed on a UART terminal emulator.

Requirements

ModusToolbox™ v3.1
Board support package (BSP) minimum required version for:
- XMC™ MCU: v2.2.0
SEGGER J-Link software
Programming language: C
Associated parts: All XMC™ 1000 MCU parts

Supported toolchains (make variable 'TOOLCHAIN')

GNU Arm® Embedded Compiler v11.3.1 (GCC_ARM) - Default value of TOOLCHAIN

Supported kits (make variable 'TARGET')

XMC1100 Boot Kit (KIT_XMC11_BOOT_001)
XMC1200 Boot Kit (KIT_XMC12_BOOT_001)
XMC1300 Boot Kit (KIT_XMC13_BOOT_001)
XMC1400 Boot Kit (KIT_XMC14_BOOT_001)

Hardware setup

This example uses the board's default configuration. See the kit user guide to ensure that the board is configured correctly.

Software setup

See the ModusToolbox™ tools package installation guide for information about installing and configuring the tools package.

Install a terminal emulator if you don't have one. Instructions in this document use Tera Term.

This example requires no additional software or tools.

Using the code example

Create the project

The ModusToolbox™ tools package provides the Project Creator as both a GUI tool and a command line tool.

Use Project Creator GUI

Open the Project Creator GUI tool.

There are several ways to do this, including launching it from the dashboard or from inside the Eclipse IDE. For more details, see the Project Creator user guide (locally available at {ModusToolbox™ install directory}/tools_{version}/project-creator/docs/project-creator.pdf).
On the Choose Board Support Package (BSP) page, select a kit supported by this code example. See Supported kits.

Note: To use this code example for a kit not listed here, you may need to update the source files. If the kit does not have the required resources, the application may not work.
On the Select Application page:

a. Select the Applications(s) Root Path and the Target IDE.

Note: Depending on how you open the Project Creator tool, these fields may be pre-selected for you.

b. Select this code example from the list by enabling its check box.

Note: You can narrow the list of displayed examples by typing in the filter box.

c. (Optional) Change the suggested New Application Name and New BSP Name.

d. Click Create to complete the application creation process.

Use Project Creator CLI

The 'project-creator-cli' tool can be used to create applications from a CLI terminal or from within batch files or shell scripts. This tool is available in the {ModusToolbox™ install directory}/tools_{version}/project-creator/ directory.

Use a CLI terminal to invoke the 'project-creator-cli' tool. On Windows, use the command-line 'modus-shell' program provided in the ModusToolbox™ installation instead of a standard Windows command-line application. This shell provides access to all ModusToolbox™ tools. You can access it by typing "modus-shell" in the search box in the Windows menu. In Linux and macOS, you can use any terminal application.

The following example clones the PRNG application with the desired name "MyPRNG" configured for the KIT_XMC14_BOOT_001 BSP into the specified working directory, C:/mtb_projects:

project-creator-cli --board-id KIT_XMC14_BOOT_001 --app-id mtb-example-xmc-prng --user-app-name MyPRNG --target-dir "C:/mtb_projects"

The 'project-creator-cli' tool has the following arguments:

Argument	Description	Required/optional
`--board-id`	Defined in the `<id>` field of the BSP manifest	Required
`--app-id`	Defined in the `<id>` field of the CE manifest	Required
`--target-dir`	Specify the directory in which the application is to be created if you prefer not to use the default current working directory	Optional
`--user-app-name`	Specify the name of the application if you prefer to have a name other than the example's default name	Optional

Note: The project-creator-cli tool uses the git clone and make getlibs commands to fetch the repository and import the required libraries. For details, see the "Project creator tools" section of the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).

Open the project

After the project has been created, you can open it in your preferred development environment.

Eclipse IDE

If you opened the Project Creator tool from the included Eclipse IDE, the project will open in Eclipse automatically.

For more details, see the Eclipse IDE for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_ide_user_guide.pdf).

Visual Studio (VS) Code

Launch VS Code manually, and then open the generated {project-name}.code-workspace file located in the project directory.

For more details, see the Visual Studio Code for ModusToolbox™ user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mt_vscode_user_guide.pdf).

Command line

If you prefer to use the CLI, open the appropriate terminal, and navigate to the project directory. On Windows, use the command-line 'modus-shell' program; on Linux and macOS, you can use any terminal application. From there, you can run various make commands.

For more details, see the ModusToolbox™ tools package user guide (locally available at {ModusToolbox™ install directory}/docs_{version}/mtb_user_guide.pdf).

Operation

Connect the board to your PC using a micro-USB cable through the debug USB connector.
Program the board using one of the following:
Using Eclipse IDE
1. Select the application project in the Project Explorer.
2. Open a terminal program and select the JLink COM port. Set the serial port parameters to 8N1 and 115200 baud.
3. In the Quick Panel, scroll down, and click <Application Name> Program (JLink).
In other IDEs

Follow the instructions in your preferred IDE.
Using CLI

From the terminal, execute the make program command to build and program the application using the default toolchain to the default target. The default toolchain is specified in the application's Makefile but you can override this value manually:
```
make program TOOLCHAIN=<toolchain>
```
Example:
```
make program TOOLCHAIN=GCC_ARM
```
After programming, the application starts automatically. Confirm that "<CE Title>" is displayed on the UART terminal.

Figure 1. Terminal output showing generated random number

Debugging

You can debug the example to step through the code.

In Eclipse IDE

Use the <Application Name> Debug (JLink) configuration in the Quick Panel. For details, see the "Program and debug" section in the Eclipse IDE for ModusToolbox™ user guide.

In other IDEs

Follow the instructions in your preferred IDE.

Design and implementation

Random number generation is the generation of a sequence of numbers or symbols that cannot be predicted based on the previous knowledge of the generated sequence. Random number generators have applications in cryptography, statistical sampling, gambling, and other areas where producing an unpredictable result is desirable.

A pseudo random number (PRNG) is generated using a hardware random number generator that generates random numbers from a physical process. PRNG in the MCU generates true random numbers of programmable bit size ranging from 0 to 16 bits.

Resources and settings

The project uses the default design.modus file.

Related resources

Resources	Links
Code examples	Using ModusToolbox™ on GitHub
Device documentation	XMC1000 family datasheets XMC1000 family technical reference manuals XMC4000 family datasheets XMC4000 family technical reference manuals
Development kits	XMC™ Evaluation board
Libraries on GitHub	mtb-xmclib-cat3 – XMC™ Peripheral Driver Library (XMCLib)
Tools	ModusToolbox™ – ModusToolbox™ software is a collection of easy-to-use libraries and tools enabling rapid development with Infineon MCUs for applications ranging from wireless and cloud-connected systems, edge AI/ML, embedded sense and control, to wired USB connectivity using PSoC™ Industrial/IoT MCUs, AIROC™ Wi-Fi and Bluetooth® connectivity devices, XMC™ Industrial MCUs, and EZ-USB™/EZ-PD™ wired connectivity controllers. ModusToolbox™ incorporates a comprehensive set of BSPs, HAL, libraries, configuration tools, and provides support for industry-standard IDEs to fast-track your embedded application development.

Other resources

Infineon provides a wealth of data at www.infineon.com to help you select the right device, and quickly and effectively integrate it into your design.

For XMC™ MCU devices, see 32-bit XMC™ industrial microcontroller based on Arm® Cortex®-M.

Document history

Document title: CE239581 – XMC™ MCU: Pseudo random number generation (PRNG)

Version	Description of change
1.0.0	New code example

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Infineon/mtb-example-xmc-prng

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