WIZ750SR Developer's Guide

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* This section is intended for developers who want to customize to an extended product based on the WIZ750SR hardware or software.

Building a WIZ750SR Development Environment

Arm Keil® MDK-ARM

Setting up a KEIL uvision5 Development Environment
- This document introduces how to build Arm KEIL uvision 5 IDE which is a representative Cortex-M series development environment.

Eclipse IDE with GNU Arm toolchain

Setting up a Eclipse IDE Development Environment
- This document introduces how to install the Eclipse IDE, a popular and free embedded development environment.

WIZ750SR Recovery User Guide

Overview

The full firmware source code of the WIZ750SR product is available at the GitHub repository, and it uses the Apache License 2.0, anyone can freely modify(called 'customize') and distribute it without restriction. These documents describe how to restore the product through the firmware update if the product does not work during the user's customization.

If the user wants to customize the application area only and keep using the configuration tool functions of the WIZ750SR product(Device Search / Setting / Update and Etc.), Users can use the 'Network Firmware Update' function of the configuration tool to update the modified application to the WIZ750SR and check if it works well. At this time, if there is a problem in the operation of the customized application firmware and the search function does not work, AppBoot mode can be used for search and recovery the device.

If you want to customize the entire firmware while maintaining the WIZ750SR's hardware, you can update the full binary directly to the code flash memory by using the W7500x ISP Tool(WIZISP) of the W7500 / W7500P chip using a serial port. The WIZ750SR-EVB is equipped with a switch(BOOT) for accessing the MCU boot mode. It can perform ISP (In-System Programming) operation through Debug UART (Micro USB connector) located on the EVB side.

Application Firmware Update in AppBoot mode

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If the customized application firmware does not work properly, WIZ750SR can be restored by booting in AppBoot mode. The AppBoot area is designed to support firmware update and recovery of the WIZ750SR device application. It is designed to perform the following functions located in the initial 28KB part (0x0000_0000 ~ 0x0000_6FFF) of the code flash memory.

Device search function using configuration tool
Device setting value change and save function
- Includes factory reset function
Network update function of application area firmware

Therefore, if the device is malfunctioning due to an error in the application firmware that has been modified for the purpose of the user, it is possible to search for the product with the configuration tool and update the new firmware by using the AppBoot mode. When using the WIZ750SR-EVB, place the AppBoot switch(APP_BOOT) of the EVB board in 'BOOT' and reboot to enter the AppBoot mode.

You can perform network firmware updates using AppBoot mode by following steps: (WIZ750SR-EVB Rev1.0)

1. Switch your WIZ750SR to AppBoot mode

After changing the 'App_Boot' switch of 'WIZ750SR-EVB' to 'Boot' and rebooting the device, AppBoot mode is activated.
If the AppBoot mode is successfully activated, the Status LED of the module flickers rapidly.

2. Device Search using Configuration Tool

Perform search the device with WIZnet-S2E-Tool-GUI(Configuration tool for WIZ750SR series).
Device search and firmware update function is work via TCP/IP network, so user's PC and devices should be able to network with each other.
If the device is in AppBoot mode, the status of the detected device is displayed as 'BOOT'.

3. Device update by New firmware

Press the 'Upload' button on the Configuration tool to select the new firmware and click 'Open'.
The latest version of the configuration tool can be downloaded from WIZnet-S2E-Tool-GUI Github repository.
The procedure is the same as the application firmware update procedure of WIZ750SR device.

4. Switch the device to Application mode