STM32H5 How to integrate NetXDuo with custom PHY

Kacper Dalach 20

Hello
I have the STM32H563 MCU on a custom board with KSZ8081RNB ethernet PHY. It's my first time using NetXDuo so I'm configuring it mainly through ST's CubeMX code generation software. I was able to configure the stack and write a custom PHY driver that properly reads link state and can properly communicate with the PHY through RMII.
After connection the PHY links up properly and passes packets to MCU.
However the ethernet ISR is not called.

This got me thinking - does NetXDuo alter interrupt settings of my STM32 during run time? Do i have to define some callbacks when i write my own PHY driver? I couldn't find any information on writing PHY drivers from NetXDuo and I'm kinda lost.

Some additional info about my setup:

STM32H5 is clocked by 25MHz clock that is multiplied to 75 MHz
I use ARM trust zone but everything is running in the non secure context
ICACHE is enabled (1-way) and DCACHE is disabled

LeelaRajeshSayana-MSFT 14,831 Reputation points Microsoft Employee

2023-06-28T21:16:09.2633333+00:00

Hi @Kacper Dalach Greetings! Welcome to Microsoft Q&A forum. Thank you for posting this question here. Our community SMEs will review this request and get back to you as soon as possible.

Accepted answer

Bo Chen 596 Reputation points Microsoft Employee

2023-06-29T05:46:44.1933333+00:00

Hi @Kacper Dalach Thanks for reaching out to us. Looks the issue is for the driver. I would suggest you asking for help from ST. Thanks. https://community.st.com/s/topic/0TO3W0000004ZG8WAM/azurertos
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Kacper Dalach 20 Reputation points

2023-06-29T05:55:06.9633333+00:00

I have already asked on ST's community forum for guidelines on writing a PHY driver but did not get any answers. I suppose you - as the developers of NetXDuo stack could give me some guidance. I feel like the documentation is missing crucial info about writing a PHY driver for NetXDuo.
I have provided both nx_eth_phy_get_link_state() and nx_eth_phy_init() in my driver. From header file i deduced that there should alsobe nx_eth_phy_get_handle() and nx_eth_phy_set_link_state() but these two are not called anywhere in the stack so it's a bit weird.
Am I missing something? Is there some document that I've missed about what should i provide when writing a PHY driver for your stack?

Bo Chen 596 Reputation points Microsoft Employee

2023-06-29T06:13:50.62+00:00

Hi @Kacper Dalach I believe ST will support you. Below are the user guide and ram driver for your reference.

NetX Duo Network Driver User Guide: https://video2.skills-academy.com/en-us/azure/rtos/netx-duo/chapter5

Ram driver for reference: https://github.com/azure-rtos/netxduo/blob/master/common/src/nx_ram_network_driver.c

Bo Chen 596 Reputation points Microsoft Employee

2023-06-29T06:17:10.3+00:00

Hi @Kacper Dalach I believe ST will support you. Below are the user guide and ram driver for your reference.

User Guide: https://video2.skills-academy.com/en-us/azure/rtos/netx-duo/chapter5

Ram driver: https://github.com/azure-rtos/netxduo/blob/master/common/src/nx_ram_network_driver.c
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