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Promise_Conti · 2024-10-07

Hello everyone, I would like to know if the Nucleo-H7A3ZI-Q supports the MDIO to external Ethernet PHY control via SMI (MDC and MDIO). I have the setup connected, and I have programmed it accordingly but the MDC and MDIO Lines are always LOW, not eve...

Promise_Conti · 2024-10-09

Hello @STea , You are right, the Nucleo-H7A3ZI-Q cannot initiate the SMI communication because it is also a SLAVE ( I found this choice of architecture really fascinating as I would have expected MCUs to serve as ETH MAC Master and definately not as ...

Promise_Conti · 2024-10-08

But the issue still persists.

Promise_Conti · 2024-10-08

Hi LCE, These are the functions I have on the Initilization: HAL_MDIOS_Init(&hmdios);MDIOS_HandleTypeDef hmdios;static void MX_MDIOS_Init(void) { /* USER CODE BEGIN MDIOS_Init 0 */ /* USER CODE END MDIOS_Init 0 */ /* USER CODE BEGIN MDIOS_I...

Promise_Conti · 2024-10-07

Hi LCE, for my use case, I do not care about the actual Ethernet Traffic, therefore I pay not attention to the RMII interfaces. I only to have access to the external PHY registers via SMI. Can you expand more on the init the MDIO peripheral, I think ...

Promise_Conti · 2024-10-07

Hi LCE,I do not need the On board PHY or any of the Analogue Front End circuitry, I only need the MDC and MDIO pins (on PC1 and PA2) to communicate with an external PHY on another board.- check the Nucleo schematics and find the SMI pins Respo...

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