stm32u575 & Ethernet port

[mauroalba]

Hi,

I've a board, now a nucleo-u575zi-q but i'm waiting for a custum boad based on same MCU. I need this serie for the low power functionalities. In next phase of project , in this board i need an ethernet port where run web and tcp server. I found some good examples about these features but are all based on different series of MCU. There are examples based on STM32F and H series, both have a specific set of pins to manage the ethernet connection defined as ETH block.  They use Azure or Freertos with or without Lwip in conjunction with Lan8742 component as physical interface. My question is: can i use the same eth components, hw and sw, also with STM32U5 series? The functionalities used in eth micro block can be replicated, are only gpio pins to configure?, in U series ? In this way i can start from examples already present or i need to change MCU to have eth port on board? 

Thanks

[mƎALLEm]

Hello,

You can use LAN8742 with STM32U5 MCU but you don't have it on the NUCLEO-U575ZI-Q board.

Do you plan to add an external ETH PHY module? 

[mauroalba]

Yes, i'll add externally the LAN8742 component/board. My dubts are about the configuration of "specific" block inside MCU.

[mƎALLEm]

Unfortunately there is no ready to use ETH example on U5. You need to inspire from other products ETH examples.

[mauroalba]

yes, i saw this. My goal would be use in U575 netxduo using th examples developed for F/H series with Lan8742 so to not have to write driver. If im not wrong netxduo natively support this eth interface.

[Pavel A.]

Here you can find helping hands for your project:

https://www.fiverr.com/categories/programming-tech/electronics-engineering/embedded-systems-iot?ref=platform%3Astm32

[mƎALLEm]

Hello @mauroalba ,

So refer to this article: How to create a IPv4 NetXDuo Ethernet UDP application for STM32H5 with TrustZone® enabled

The solution was implemented on NUCLEO-H563ZI and I think it should be similar with U575.

Hope that helps.

[Guillaume K · Accepted solution]

Hi

There is no Ethernet IP in the STM32U5 series. it's not possible to use a PHY like LAN8742 with a STM32U5.

[mƎALLEm]

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@Guillaume K wrote:

Hi

There is no Ethernet IP in the STM32U5 series. it's not possible to use a PHY like LAN8742 with a STM32U5.

 Indeed.

@mauroalba look at the U575 datasheet. There is no avalable ETH interface on this device.