Example Ethernet loopback code for STM32H573 and LAN8742A.

[rchilakalapudi]

Hi,

I'm currently working on a project involving the STM32H573 microcontroller and the LAN8742A Ethernet PHY. My goal is to implement a simple Ethernet loopback test to verify the basic functionality of the Ethernet interface. Could you please provide if you have anything?

Thanks,

Ravi.ch

[STea]

Hello @rchilakalapudi ,

My understanding is that you want to implement an example without any middleware to test Ethernet controller functionality my recommendation is to have a look at the following article:

How to create a bare metal HAL Ethernet applicatio... - STMicroelectronics Community

Also, you can check a basic implementation using Azure Netxduo :

STM32CubeH5/Projects/STM32H573I-DK/Applications/NetXDuo/Nx_TCP_Echo_Server at main · STMicroelectronics/STM32CubeH5

or an example using LWIP middleware :

stm32h5-classic-coremw-apps/Projects/NUCLEO-H563ZI/Applications/LwIP/LwIP_UDP_Echo_Server at main · STMicroelectronics/stm32h5-classic-coremw-apps
Regards

[Pavel A.]

The LAN8742A can do internal loopback (without any external connection or cable). See the data sheet, 3.8.10 Loopback operation.  This section also explains how to make a connector for external loopback.