NetDev_MII_Rd()
The next function to implement is the (R)MII read/Phy_RegRd() function. This function is generally implemented within the Ethernet device driver file, since (R)MII bus reads are generally associated with the MAC device. In the case that the PHY communication mechanism is separate from the MAC, then a handler function may be provided within the net_bsp.c file and called from the device driver file instead.
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Every device driver’s net_dev.c
Prototype
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| Code Block |
|---|
static void NetDev_MII_Rd (NET_IF *pif,
CPU_INT08U phy_addr,
CPU_INT08U reg_addr,
CPU_INT16U *p_data,
NET_ERR *perr); |
Note that since every device driver’s Phy_RegRd()/MII_Rd() function is accessed only by function pointer via the device driver’s API structure, it doesn’t need to be globally available and should therefore be declared as ‘static’.
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