NetPhy_LinkStateSet()

The Ethernet PHY’s LinkStateSet() function determines the current Ethernet link state. Results are passed back to the caller within a NET_DEV_LINK_ETHER structure which contains fields for link speed and duplex. This function is called periodically by µC/TCP-IP.

Files

Every physical layer driver’s net_phy.c

Prototype

          static void NetPhy_LinkStateSet (NET_IF             *pif,
                                           NET_DEV_LINK_ETHER *plink_state,
                                           NET_ERR            *perr);

Note that since every PHY driver’s LinkStateSet() function is accessed only by function pointer via the PHY driver’s API structure, it doesn’t need to be globally available and should therefore be declared as ‘static’.

Arguments

pif

Pointer to the interface to set a PHY’s current link state.

plink_state

Pointer to a link state structure with link state information to configure. The NET_DEV_LINK_ETHER structure contains two fields for link speed and duplex. Link speed is set via plink_state->Spd :

NET_PHY_SPD_10
NET_PHY_SPD_100

And link duplex is set via plink_state->Duplex :

NET_PHY_DUPLEX_HALF
NET_PHY_DUPLEX_FULL

perr

Pointer to variable that will receive the return error code from this function.

Returned Value

None.

Required Configuration

None.

Notes/Warnings

None.