PSOC™ Edge MCU: Hello world

June 26, 2026 · View on GitHub

This code example demonstrates a simple UART communication by printing the "Hello world" message on a terminal and blinking an LED using an Arm® Cortex®-M33 CPU on PSOC™ Edge MCU.

This code example has a three project structure: CM33 secure, CM33 non-secure, and CM55 projects. All three projects are programmed to the external QSPI flash and executed in Execute in Place (XIP) mode. Extended boot launches the CM33 secure project from a fixed location in the external flash, which then configures the protection settings and launches the CM33 non-secure application. Additionally, CM33 non-secure application enables CM55 CPU and launches the CM55 application.

Note: On the KIT_PSE84_HMI, all three projects are programmed to the external OSPI flash instead of QSPI.

View this README on GitHub.

Provide feedback on this code example.

See the Design and implementation for the functional description of this code example.

Requirements

  • ModusToolbox™ v3.7 or later (tested with v3.7)
  • Board support package (BSP) minimum required version: 1.0.0
  • Programming language: C
  • Associated parts: All PSOC™ Edge MCU parts

Supported toolchains (make variable 'TOOLCHAIN')

  • GNU Arm® Embedded Compiler v14.2.1 (GCC_ARM) – Default value of TOOLCHAIN
  • Arm® Compiler v6.22 (ARM)
  • IAR C/C++ Compiler v9.50.2 (IAR)
  • LLVM Embedded Toolchain for Arm® v19.1.5 (LLVM_ARM)

Supported kits (make variable 'TARGET')

Hardware setup

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

Ensure the following jumper and pin configuration on board.

  • BOOT SW must be in the HIGH/ON position
  • J20 and J21 must be in the tristate/not connected (NC) position for the PSOC™ Edge E84 Evaluation Kit

Note: This hardware setup is not required for KIT_PSE84_AI.

Software setup

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

Install a terminal emulator if you do not have one. Instructions in this document use Tera Term.

This example requires no additional software or tools.

Operation

See Using the code example for instructions on creating a project, opening it in various supported IDEs, and performing tasks, such as building, programming, and debugging the application within the respective IDEs.

  1. Connect the board to your PC using the provided USB cable through the KitProg3 USB connector

  2. Open a terminal program and select the KitProg3 COM port. Set the serial port parameters to 8N1 and 115200 baud

  3. After programming, the application starts automatically. Confirm that "PSOC Edge MCU: Hello world" is displayed on the UART terminal

    Figure 1. Terminal output on program startup

  4. Confirm that the kit 'User LED1' blinks at approximately 1 Hz

ResourcesLinks
Application notesAN235935 – Getting started with PSOC™ Edge E8 MCU on ModusToolbox™ software
Code examplesUsing ModusToolbox™ on GitHub
Device documentationPSOC™ Edge MCU datasheets
PSOC™ Edge MCU reference manuals
Development kitsSelect your kits from the Evaluation board finder
Librariesmtb-dsl-pse8xxgp – Device support library for PSE8XXGP
retarget-io – Utility library to retarget STDIO messages to a UART port
ToolsModusToolbox™ – 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.

Document history

Document title: CE238541 – PSOC™ Edge MCU: Hello world

VersionDescription of change
1.x.0New code example
Early access release
2.0.0GitHub release
2.1.0Added support for KIT_PSE84_HMI

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