#define ETH_AutoNegotiation_Disable ((uint32_t)0x00000000)
#define ETH_Speed_100M ((uint32_t)0x00004000)
#define ETH_Mode_FullDuplex ((uint32_t)0x00000800)


static void ETH_MACDMA_Config(void)
{
ETH_InitTypeDef ETH_InitStructure;

/* Reset ETHERNET on AHB Bus */
ETH_DeInit();

/* Software reset */
ETH_SoftwareReset();

/* Wait for software reset */
while (ETH_GetSoftwareResetStatus() == SET);

/* ETHERNET Configuration --------------------------------------------------*/
/* Call ETH_StructInit if you don't like to configure all ETH_InitStructure parameter */
ETH_StructInit(&ETH_InitStructure);

/* Fill ETH_InitStructure parametrs */
/*------------------------ MAC -----------------------------------*/
//ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Enable;
ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Disable;
ETH_InitStructure.ETH_Speed = ETH_Speed_100M;
ETH_InitStructure.ETH_Mode = ETH_Mode_FullDuplex;

ETH_InitStructure.ETH_LoopbackMode = ETH_LoopbackMode_Disable;
ETH_InitStructure.ETH_RetryTransmission = ETH_RetryTransmission_Enable;
ETH_InitStructure.ETH_AutomaticPadCRCStrip = ETH_AutomaticPadCRCStrip_Disable;
ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Disable;
ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Enable;
ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;
ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_None;
ETH_InitStructure.ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect;
#ifdef CHECKSUM_BY_HARDWARE
ETH_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable;
#endif

/*------------------------ DMA -----------------------------------*/

/* When we use the Checksum offload feature, we need to enable the Store and Forward mode:
the store and forward guarantee that a whole frame is stored in the FIFO, so the MAC can insert/verify the checksum,
if the checksum is OK the DMA can handle the frame otherwise the frame is dropped */
ETH_InitStructure.ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Enable;
ETH_InitStructure.ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Enable;
ETH_InitStructure.ETH_TransmitStoreForward = ETH_TransmitStoreForward_Enable;

ETH_InitStructure.ETH_ForwardErrorFrames = ETH_ForwardErrorFrames_Disable;
ETH_InitStructure.ETH_ForwardUndersizedGoodFrames = ETH_ForwardUndersizedGoodFrames_Disable;
ETH_InitStructure.ETH_SecondFrameOperate = ETH_SecondFrameOperate_Enable;
ETH_InitStructure.ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Enable;
ETH_InitStructure.ETH_FixedBurst = ETH_FixedBurst_Enable;
ETH_InitStructure.ETH_RxDMABurstLength = ETH_RxDMABurstLength_32Beat;
ETH_InitStructure.ETH_TxDMABurstLength = ETH_TxDMABurstLength_32Beat;
ETH_InitStructure.ETH_DMAArbitration = ETH_DMAArbitration_RoundRobin_RxTx_2_1;

/* Configure Ethernet */
EthInitStatus = ETH_Init(&ETH_InitStructure, DP83848_PHY_ADDRESS);

/* Enable the Ethernet Rx Interrupt */
//ETH_DMAITConfig(ETH_DMA_IT_NIS | ETH_DMA_IT_R, ENABLE);
}