UInt16 ReadPhyRegister(AX88796CPhyRegister registerAddress)
{
// start reading our PHY register value
UInt16 mdiocr = (UInt16)(ReadGlobalRegister(AX88796CRegister.MDIOCR) & 0xE0E0); // mask out the bits we will be setting
mdiocr |= (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READ;
mdiocr |= (UInt16)((UInt16)registerAddress & 0x1F);
mdiocr |= (UInt16)(((UInt16)_phyID) << 8);
WriteGlobalRegister(AX88796CRegister.MDIOCR, (UInt16)mdiocr);
// wait for the PHY register value to be read successfully
Int64 startTicks = Microsoft.SPOT.Hardware.Utility.GetMachineTime().Ticks;
bool mdioOperationSuccess = false;
do
{
mdiocr = ReadGlobalRegister(AX88796CRegister.MDIOCR);
if ((mdiocr & (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READWRITE_COMPLETE) == (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READWRITE_COMPLETE)
{
mdioOperationSuccess = true;
break;
}
} while ((Utility.GetMachineTime().Ticks - startTicks) / System.TimeSpan.TicksPerMillisecond < 250); // wait up to 250ms
if (!mdioOperationSuccess)
{
throw new Exception(); /* TODO: this should be a "could not configure network interface" exception */
}
return(ReadGlobalRegister(AX88796CRegister.MDIODR));
}
UInt16 ReadPhyRegister(AX88796CPhyRegister registerAddress)
{
// start reading our PHY register value
UInt16 mdiocr = (UInt16)(ReadGlobalRegister(AX88796CRegister.MDIOCR) & 0xE0E0); // mask out the bits we will be setting
mdiocr |= (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READ;
mdiocr |= (UInt16)((UInt16)registerAddress & 0x1F);
mdiocr |= (UInt16)(((UInt16)_phyID) << 8);
WriteGlobalRegister(AX88796CRegister.MDIOCR, (UInt16)mdiocr);
// wait for the PHY register value to be read successfully
Int64 startTicks = Microsoft.SPOT.Hardware.Utility.GetMachineTime().Ticks;
bool mdioOperationSuccess = false;
do
{
mdiocr = ReadGlobalRegister(AX88796CRegister.MDIOCR);
if ((mdiocr & (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READWRITE_COMPLETE) == (UInt16)AX88796CRegisterBits.MDIOCR_MDIO_READWRITE_COMPLETE)
{
mdioOperationSuccess = true;
break;
}
} while ((Utility.GetMachineTime().Ticks - startTicks) / System.TimeSpan.TicksPerMillisecond < 250); // wait up to 250ms
if (!mdioOperationSuccess)
throw new Exception(); /* TODO: this should be a "could not configure network interface" exception */
return ReadGlobalRegister(AX88796CRegister.MDIODR);
}
