IF91x Wi-Fi Provisioning over BLE Using ModusToolbox™

  1. Overview
  2. Prerequisites
  3. Create the Wi-Fi Scan Project
    1. Launch IDE
    2. Confirm Project Location
    3. Build the Project
  4. Prepare Flashing Tools
    1. Identify UART Ports
    2. Flash the Firmware
  5. Run Application
    1. Open UART Console
    2. Connect Using AIROC™ Bluetooth® Connect App
    3. Enable Notifications
    4. Trigger Wi-Fi Scan
    5. Provide Wi-Fi Credentials
    6. Initiate Wi-Fi Connection
  6. Reference
Veda IF912Veda IF913

Overview

This guide describes how to:

  1. Build the https://github.com/Infineon/mtb-example-threadx-le-wifi-onboarding example in ModusToolbox™
  2. Generate the .hex image
  3. Flash the image to the IF91x DVK
  4. View Wi-Fi scan results via UART

Note: This guide is current as of February 2026.

Prerequisites

Install the following:

Download this repository as zip file.

Create the Wi-Fi Scan Project

Launch IDE

  1. Start Eclipse for ModusToolbox™ 2025.8

  2. Click New Application

    image-20260211-191401.png

  3. Choose CYW955913EVK-01 as the kit name, then click Next.

    image-20260211-191330.png

  4. Click Browse for Application.

    image-20260211-201347.png

  5. Browse to the folder where you downloaded https://github.com/Infineon/mtb-example-threadx-le-wifi-onboarding from the prerequisite, then click Select Folder.

    image-20260211-201549.png

  6. Select the mtb-example-threadx-le-wifi-onboarding-master checkbox under Template Application, then click Create.

    image-20260211-201908.png

Confirm Project Location

By default, the following folders should be created:

mtb-example-threadx-le-wifi-onboarding-master
mtb_shared

They are typically located at:

C:\Users\<username>\mtw

You may also navigate using:

%USERPROFILE%\mtw

The project should appear in the left panel under Project Explorer.

image-20260211-202121.png

If Project Explorer is not visible:

Window → Show View → Project Explorer
image-20260211-202238.png

Build the Project

From the menu:

Project → Build All
image-20260211-202308.pngAfter a successful build, the generated .hex file will be located at:
C:\Users\<username>\mtw\mtb-example-threadx-le-wifi-onboarding-master\build\APP_CYW955913EVK-01\Debug\mtb-example-threadx-le-wifi-onboarding_download.hex

Prepare Flashing Tools

Download and extract [Veda IF91x] Firmware_Script_Log_TestCmd.7z from our website: https://connectivity-staging.s3.amazonaws.com/files/Veda IF91x_Firmware_Script_Log_TestCmd.7z

Copy the generated .hex file into:
<Extracted Folder>\Files

Identify UART Ports

Connect the IF91x DVK via USB.

Open device manager. You will see two COM ports.

image-20260211-195133.png

To identify them:

  1. Right-click each COM port → Properties
  2. Go to Details

  3. Select Hardware Ids

    image-20260211-194723.png

Look for:

InterfaceIdentifierPurpose
HCI UARTMI_01Used for flashing
WLAN UARTMI_03Used for Wi-Fi scan output

Example:

  • MI_01 → COM6 (HCI UART)
  • MI_03 → COM5 (WLAN UART)

Flash the Firmware

The below sequence puts the IF91x DVK into HCI download mode for flashing.

  • Press and hold the RECOVERY button (labeled c below)
  • While holding RECOVERY, press and hold the RESET button (labeled d below)
  • Continue holding both buttons for about 1 second
  • Release the RESET
  • Finally, release the RECOVERY
image-20260211-203013.pngOpen Command Prompt in the extracted Files directory.

Run:

ifx_flasher_cli.exe -b if91x <HCI_COM_PORT> -f mtb-example-threadx-le-wifi-onboarding_download.hex -ce

Example with the above setup:

ifx_flasher_cli.exe -b if91x COM6 -f mtb-example-threadx-le-wifi-onboarding_download.hex -ce

Expected output:

IFX Flasher CLI v1.0.0
2026-02-11 15:26:48,966 | INFO | Entering HCI download mode on board E664A836A33A412A
2026-02-11 15:26:49,175 | INFO | Loading minidriver...
2026-02-11 15:26:50,906 | INFO | Performing chip erase...
2026-02-11 15:26:53,686 | INFO | Chip erase finished
2026-02-11 15:26:53,686 | INFO | Changing baud to 3000000
2026-02-11 15:26:53,860 | INFO | Programming firmware... (512190 bytes)
2026-02-11 15:27:27,599 | INFO | Finished programming!

Run Application

Open UART Console

Open TeraTerm

  1. Select the WLAN UART COM port (MI_03, COM5 in this example)
  2. Press RESET on the board

The terminal should display initialization logs.

image-20260211-204250.png

Connect Using AIROC™ Bluetooth® Connect App

  • Open the AIROC™ Bluetooth® Connect app on your Android or iOS device
  • Scan and connect to the device named bleProv
image-20260211-205315.png

Enable Notifications

  • Select GATT DB
image-20260211-205432.png
  • Only one service should be listed — select it
image-20260211-205522.png
  • Locate the characteristic whose UUID ends with 66
image-20260211-205641.png
  • Click Notify to enable notifications
image-20260211-205706.png

Trigger Wi-Fi Scan

  • Locate the characteristic ending with 67
  • Write hex value: 02
image-20260211-205903.png

TeraTerm should now display the list of available Wi-Fi networks.

image-20260211-210144.png

Provide Wi-Fi Credentials

Send SSID

  • Select the characteristic ending with 63
  • Write the ASCII value of your Wi-Fi SSID
  • A pairing key prompt will appear
image-20260211-210242.png
  • Locate the key in the TeraTerm output and enter it in the mobile app when prompted
image-20260211-210452.png

Send Password

  • Select the characteristic ending with 64
  • Write the ASCII value of your Wi-Fi password.

Initiate Wi-Fi Connection

  • Select the characteristic ending with 67
  • Write hex value: 01

The device will attempt to connect to the specified Wi-Fi network.

Connection status and logs will be displayed in TeraTerm.

image-20260211-210703.png

Reference

For further details, see the attached document from Infineon.

https://connectivity-staging.s3.amazonaws.com/files/CYW55913_Software_Develop_Setup_20260123.pdf