OTA firmware update using W5500

[Aries16]

Hii, I want to update the firmware of my STM32H723ZGT6 microcontroller. Here, I want to send firmware file from server to W5500 Wiznet IC then I want that this firmware should load in to the microcontroller flash and it should update the program so can anyone help me with this??

[Andrew Neil]

"OTA" = Over The Air.

But a W5500 is a wired ethernet device.

The STM32H723ZGT6 already has ethernet built-in - so why would you add a W5500 ??

Anyhow, what you need is a Bootloader.

PS:

On Bootloaders for STM32:

https://community.st.com/t5/stm32-mcus/why-do-we-need-a-bootloader-in-a-microcontroller/ta-p/49446

https://community.st.com/t5/stm32-mcus/how-to-use-the-st-open-bootloader-for-stm32-microcontrollers/ta-p/49896

https://community.st.com/t5/stm32-mcus-embedded-software/official-stm32-bootloader/td-p/591959

https://community.st.com/t5/stm32-mcus-products/how-can-i-use-an-esp32-to-update-the-firmware-of-an-stm32-from/m-p/696326/highlight/true#M254867

STM32H7 specifically:

https://community.st.com/t5/stm32-mcus-embedded-software/how-can-i-develop-a-bootloader-for-a-stm32h745-dual-core/td-p/172125

[mƎALLEm]

Hello @Aries16 and welcome to the community,

W5500 seems to be a SPI/Ethernet bridge.

If you intend to use the SPI bootloader, you have to take care about the bootloader protocol over the SPI:

Refer to this application note.

You need to handle the Boot pin and the reset pin of the STM32H7.