Reference/Example software (C/C++-codes) for NIOSII processor which is interfaced with intel MDIO IP

[Matt1]

I am trying to configure an Ethernet PHY using MDIO .

The MDIO lines of the Ethernet PHY is be connected to the intel MDIO IP in FPGA similar to the connection available in cyclone V GT evaluation board.

in my design the intel MDIO IP is connected to a NIOSII soft processor and external PHY.

Is it possible to get some reference/Example software(C/C++-codes) available for the NIOSII soft processor to make it work in the above scenario ?

[SengKok_L_Intel]

Hi,

Probably you can refer to the user guide below, table 50 for the register map of MDIO.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_embedded_ip.pdf

Besides, you can use the IORD or IOWR IO macro to configure those register. Please refer to the handbook below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/nios2/n2sw_nii5v2.pdf

Regards -SK

[Matt1]

hello Lim,

Thanks for the support.

I am a bit confused with the registers address especially offset registers address;0x20 and 0x21.

should I need to use the offset Register address or the byte address?

[SengKok_L_Intel]

If​ you use the IORD or IOWR macro, you can use the offset registers address.

Regards -SK