FXmacPhyWrite

fxmac_rs

Function FXmacPhyWrite 

Source 
pub fn FXmacPhyWrite(
    instance_p: &mut FXmac,
    phy_address: u32,
    register_num: u32,
    phy_data: u16,
) -> u32
Expand description

Writes data to a PHY register via MDIO.

Writes a 16-bit value to the specified register of the PHY at the given address. The MAC provides MDIO access to PHYs adhering to the IEEE 802.3 Media Independent Interface (MII) standard.

§Arguments

  • instance_p - Mutable reference to the FXMAC instance.
  • phy_address - PHY address on the MDIO bus (0-31).
  • register_num - PHY register number to write.
  • phy_data - 16-bit data to write to the register.

§Returns

  • 0 (FT_SUCCESS) on successful write.
  • 6 (FXMAC_ERR_PHY_BUSY) if the MDIO bus is busy.

§Note

The device does not need to be stopped before PHY access, but the MDIO clock should be properly configured.