Posted on June 18, 2014 at 11:53Hi Clive1,
I tried what you said earlier. I am attaching my code. Please check it once and help ASAP. Controller- STM32107RBT6 with DP83848CVV as physical layer device.
/*-------------------- PHY initialization and configuration ----------------*/
/* Put the PHY in reset mode */
if(!(ETH_WritePHYRegister(PHYAddress, PHY_BCR, PHY_Reset)))
{
/* Return ERROR in case of write timeout */
return ETH_ERROR;
}
/* Delay to assure PHY reset */
_eth_delay_(PHY_ResetDelay);
if(ETH_InitStruct->ETH_AutoNegotiation != ETH_AutoNegotiation_Disable)
{
/* We wait for linked satus... */
do
{
timeout++;
} while (!(ETH_ReadPHYRegister(PHYAddress, PHY_BSR) & PHY_Linked_Status) && (timeout < PHY_READ_TO));
/* Return ERROR in case of timeout */
if(timeout == PHY_READ_TO)
{
return ETH_ERROR;
}
/* Reset Timeout counter */
timeout = 0;
/* Enable Auto-Negotiation */
if(!(ETH_WritePHYRegister(PHYAddress, PHY_BCR, PHY_AutoNegotiation)))
{
/* Return ERROR in case of write timeout */
return ETH_ERROR;
}
/* Wait until the autonegotiation will be completed */
do
{
timeout++;
} while (!(ETH_ReadPHYRegister(PHYAddress, PHY_BSR) & PHY_AutoNego_Complete) && (timeout < (uint32_t)PHY_READ_TO));
/* Return ERROR in case of timeout */
if(timeout == PHY_READ_TO)
{
return ETH_ERROR;
}
/* Reset Timeout counter */
timeout = 0;
/* Read the result of the autonegotiation */
RegValue = ETH_ReadPHYRegister(PHYAddress, PHY_SR);
/* Configure the MAC with the Duplex Mode fixed by the autonegotiation process */
if((RegValue & PHY_Duplex_Status) != (uint32_t)RESET)
{
/* Set Ethernet duplex mode to FullDuplex following the autonegotiation */
ETH_InitStruct->ETH_Mode = ETH_Mode_FullDuplex;
}
else
{
/* Set Ethernet duplex mode to HalfDuplex following the autonegotiation */
ETH_InitStruct->ETH_Mode = ETH_Mode_HalfDuplex;
}
/* Configure the MAC with the speed fixed by the autonegotiation process */
if(RegValue & PHY_Speed_Status)
{
/* Set Ethernet speed to 10M following the autonegotiation */
ETH_InitStruct->ETH_Speed = ETH_Speed_10M;
}
else
{
/* Set Ethernet speed to 100M following the autonegotiation */
ETH_InitStruct->ETH_Speed = ETH_Speed_100M;
}
}
else
{
if(!ETH_WritePHYRegister(PHYAddress, PHY_BCR, ((uint16_t)(ETH_InitStruct->ETH_Mode >> 3) |
(uint16_t)(ETH_InitStruct->ETH_Speed >> 1))))
{
/* Return ERROR in case of write timeout */
return ETH_ERROR;
}
/* Delay to assure PHY configuration */
_eth_delay_(PHY_ConfigDelay);
}
thanks in advance....
