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Edgi-Talk_M55_CoreMark Example Project

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Introduction

This example project is based on the Edgi-Talk platform, demonstrating the CoreMark benchmark running on the M55 core under the RT-Thread real-time operating system. Through this project, users can quickly verify the performance of the M55 core and understand how the multi-core coprocessor operates under a real-time OS environment.

About CoreMark

CoreMark is a standardized embedded CPU benchmark developed by EEMBC (Embedded Microprocessor Benchmark Consortium). It is primarily used to measure the core computational performance of a microcontroller or processor, independent of specific hardware peripherals.

Test Contents

CoreMark evaluates CPU performance through four representative algorithm categories:

  • List processing

  • Matrix operations

  • State machine

  • CRC (Cyclic Redundancy Check)

Test Results

The output is represented as CoreMark/MHz or CoreMark, which allows performance comparison between different processors or compiler optimization levels.

Features

  • Open source, portable, and lightweight

  • Repeatable and verifiable results

  • Focused on CPU integer computation capability

Software Description

  • The project is developed based on the Edgi-Talk platform.

  • The example includes:

    • Running CoreMark benchmark on the M55 core

    • Printing benchmark results through UART

  • The project has a clean structure, making it easy to understand the M55 startup process and performance testing method.

Usage

Build and Download

  1. Open the project and compile it.

  2. Connect the board’s USB interface to your PC using the onboard debugger (DAP).

  3. Use the programming tool to flash the generated firmware to the development board.

Running Result

  • After flashing, power on the board to start RT-Thread.

  • The following serial output indicates the system started successfully:

 \ | /
- RT -     Thread Operating System
 / | \     5.0.2 build Sep  5 2025 15:19:27
 2006 - 2022 Copyright by RT-Thread team
msh >Hello RT-Thread
It's cortex-m55

  • Then, manually enter the following command in the serial terminal:

core_mark

  • The system will start the CoreMark test and print the benchmark results, for example:

Benchmark started, please make sure it runs for at least 10s.

2K performance run parameters for coremark.
CoreMark Size    : 666
Total ticks      : 30218
Total time (secs): 30
Iterations/Sec   : 1200
Iterations       : 36000
Compiler version : GCC10.2.1 20201103 (release)
Compiler flags   :
Memory location  : STACK
seedcrc          : 0xe9f5
[0]crclist       : 0xe714
[0]crcmatrix     : 0x1fd7
[0]crcstate      : 0x8e3a
[0]crcfinal      : 0xcc42
Correct operation validated. See README.md for run and reporting rules.
CoreMark 1.0 : 1200 / GCC10.2.1 20201103 (release)  / STACK

Notes

  • To modify the graphical configuration of the project, open the configuration file using the following tool:

tools/device-configurator/device-configurator.exe
libs/TARGET_APP_KIT_PSE84_EVAL_EPC2/config/design.modus

  • After modification, save the configuration and regenerate the code.

Startup Sequence

The system starts in the following order:

+------------------+
|   Secure M33     |
|  (Secure Core)   |
+------------------+
          |
          v
+------------------+
|       M33        |
| (Non-Secure Core)|
+------------------+
          |
          v
+-------------------+
|       M55         |
| (Application Core)|
+-------------------+

⚠️ Please strictly follow the above flashing sequence; otherwise, the system may fail to run properly.

  • If the example does not run correctly, first compile and flash the Edgi-Talk_M33_S_Template project to ensure proper initialization and core startup, then run this example.

  • To enable the M55 core, enable the following configuration in the M33 project:

    RT-Thread Settings --> Hardware --> select SOC Multi Core Mode --> Enable CM55 Core

config