Edgi-Talk_WIFI Example Project

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Introduction

This example demonstrates Wi-Fi functionality on the M55 core using RT-Thread RTOS. It allows users to quickly test Wi-Fi scanning, connection, and performance, verifying the Wi-Fi module interface.

Hardware Overview

Wi-Fi Interface

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BTB Socket

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MCU Interface

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Software Description

  • Developed on Edgi-Talk platform.

  • Example features:

    • Wi-Fi scanning

    • Wi-Fi connection

    • Iperf performance test

  • Provides a clear example of Wi-Fi driver integration with RT-Thread.

Usage

Build and Download

  1. Open and compile the project.

  2. Connect the board USB to PC via DAP.

  3. Flash the compiled firmware.

Prepare Wi-Fi resources (first-time setup)

The Wi-Fi host driver loads three blobs (firmware .bin, regulatory .clm_blob, and board-specific nvram.txt) from FAL before it can power up the radio. These files live outside the application image, so flashing a new binary will not refresh them automatically. The default bundles for Edgi-Talk live in the workspace root under resources/.

  • Keep WHD_RESOURCES_IN_EXTERNAL_STORAGE_FAL enabled in menuconfig and make sure the FAL table provides the whd_firmware, whd_clm, and whd_nvram partitions (the defaults reserve 512 KB + 32 KB + 32 KB of on-chip flash).

  • Attach a serial terminal, reboot into the msh prompt, and run the download helper for each partition:

whd_res_download whd_firmware
whd_res_download whd_clm
whd_res_download whd_nvram

Each command switches to YMODEM mode. Use a terminal that supports YMODEM upload (Xshell) to send the matching files from the top-level resources/ directory .

  • Wait for the Download … success message before moving to the next partition.

  • Power-cycle or reset the board after the three transfers so Wi-Fi starts with the freshly stored blobs. Re-run the command whenever you update the firmware/CLM/NVRAM bundle.

wifi

Running Result

  • After power-on, the system initializes the Wi-Fi device.

  • Connect to a Wi-Fi network via serial terminal:

wifi scan

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wifi join <SSID> <PASSWORD>

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ping www.rt-thread.org

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  • After connection, perform throughput test with iperf.

  • A GUI tool (jperf) is provided under packages/netutils-latest/tools.

    • Extract jperf.rar and run the .bat file to launch the tool.

  • Start iperf test from the board (replace <PC_IP> with actual PC IP):

iperf -c <PC_IP>

  • Prefer 2.4 GHz network for testing (can use PC hotspot).

Notes

  • Ensure the Wi-Fi module is correctly connected.

  • Serial terminal commands allow scanning, joining, and testing Wi-Fi.

Startup Sequence

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

⚠️ Flash in this order strictly.

  • If the example does not run, first compile and flash Edgi_Talk_M33_Blink_LED and Edgi-Talk_M33_Template.

  • To enable M55:

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

config