Introduction

The STM32 Nucleo Adapter Card is designed for effortless integration with the Nucleo-144 form factor board. Featuring 144 pin headers, it connects seamlessly to the STM32 Nucleo board without the need for any hardware modifications. Furthermore, it includes a MikroBUS interface that facilitates peripheral expansion.

This guide outlines the process for configuring hardware and software setup for executing Wi-Fi functionality on the NUCLEO-H723ZG using FreeRTOS. The tutorial specifically focuses on the example related to IF573.

Hardware Setup

The image below shows the STM32 Nucleo Adapter Card with the IF573 positioned on top of the NUCLEO-H723ZG via Nucleo-144 adapter.

453-00119 (IF573, M2, SDIO) is plugged into M.2 slot.
Hardware Setup Placeholder

💡Info: Ensure that the power source is configured to +5V.

Prerequisites

The following software needs to be installed:

STM32CubeMX: For generating code by integrating firmware and packages.
STM32CubeIDE: IDE for compiling, flashing, and debugging via ST-Link.
STM32CubeProgrammer: For flashing binary files onto STM32 boards.

Updating Software

STM32CubeMX: Installing Updates

Launch STM32CubeMX:

Navigate to Help > Check for Updates.
Refresh the list, select the new version, and click Install.

Install STM32 Connectivity Expansion Pack v1.7.1

Open STM32CubeMX and select Install/Remove under Manage Software Installation.
Click the Infineon tab, refresh, select version 1.7.0, and click Install.
Close STM32CubeMX.

Opening Project through STM32CubeMx

Download wifi_bt_tester_H723ZG.zip and extract into:
```
C:\Users\%USERNAME%\STM32Cube\Examples
```

💡Info: Unlike the wifi_bt_tester app provided from the normal expansion pack, this app does not support iperf function to reduce the image size (.elf) to fit in 1MB flash on NUCLEO‑H723ZG.

Double-click wifi_bt_tester_H723ZG.ioc to open it in STM32CubeMx. Select Migrate if prompted.
Click on Generate Code to proceed.

Click on Open Project.

Building Application in STM32CubeIDE

Modify source codes

Delete bt_cfg.c and bt_utility from:

Middlewares > Connectivity > Wireless > MfgTools > command-console
```
![Delete BT files](images/delete-bt-files.png)
```
Under C/C++ Build > MCU GCC Compiler > Preprocessor, add macro:
```
BLHS_SUPPORT
```
Then, apply and close.
In File Explorer, browse to MBEDTLS/App/mbedtls_config.h, and uncomment the following 2 parameters (line# 216, 1414):
```
#MBEDTLS_PLATFORM_TIME_ALT
#MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
```

Build Application

Build application (Project > Build All).

Flash Application

Right-click wifi_bt_tester, select Run As > STM32 C/C++ Application.
In Edit Configuration, confirm Debug/wifi_bt_tester.elf is selected, and click OK.

Running Application

Configure serial port and new-line receive to AUTO.
Power cycle the board; Wi-Fi module initializes.
Type help to list all available commands.
For example, scan command scans for Wi-Fi networks.