/** ****************************************************************************** * @file stm32f2xx_eth.c * @author MCD Application Team * @version V0.0.1 * @date 10/21/2010 * @brief This file provides all the ETH firmware functions for STM32F2xx devices. * This driver is based on V1.1.0 of "stm32_eth.c" driver, and updated * to support new feature added in STM32F2xx devices (Enhanced DMA descriptors) ****************************************************************************** * @copy * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * * <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2> */ /* * Change Logs: * Date Author Notes * 2011-07-22 aozima first implementation. * 2012-09-24 aozima update for stm32f4. * 2012-09-26 aozima add phy monitor. */ /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_eth.h" #include "stm32f4xx_rcc.h" /* STM32F ETH dirver options */ #define RMII_MODE /* MII_MODE or RMII_MODE */ #define RMII_TX_GPIO_GROUP 2 /* 1:GPIOB or 2:GPIOG */ //#define CHECKSUM_BY_HARDWARE /* don't ues hardware checksum. */ /** @addtogroup STM32F4XX_ETH_Driver * @brief ETH driver modules * @{ */ /** @defgroup ETH_Private_TypesDefinitions * @{ */ /** * @} */ /** @defgroup ETH_Private_Defines * @{ */ /* Global pointers on Tx and Rx descriptor used to track transmit and receive descriptors */ ETH_DMADESCTypeDef *DMATxDescToSet; ETH_DMADESCTypeDef *DMARxDescToGet; ETH_DMADESCTypeDef *DMAPTPTxDescToSet; ETH_DMADESCTypeDef *DMAPTPRxDescToGet; /* ETHERNET MAC address offsets */ #define ETH_MAC_ADDR_HBASE (ETH_MAC_BASE + 0x40) /* ETHERNET MAC address high offset */ #define ETH_MAC_ADDR_LBASE (ETH_MAC_BASE + 0x44) /* ETHERNET MAC address low offset */ /* ETHERNET MACMIIAR register Mask */ #define MACMIIAR_CR_MASK ((uint32_t)0xFFFFFFE3) /* ETHERNET MACCR register Mask */ #define MACCR_CLEAR_MASK ((uint32_t)0xFF20810F) /* ETHERNET MACFCR register Mask */ #define MACFCR_CLEAR_MASK ((uint32_t)0x0000FF41) /* ETHERNET DMAOMR register Mask */ #define DMAOMR_CLEAR_MASK ((uint32_t)0xF8DE3F23) /* ETHERNET Remote Wake-up frame register length */ #define ETH_WAKEUP_REGISTER_LENGTH 8 /* ETHERNET Missed frames counter Shift */ #define ETH_DMA_RX_OVERFLOW_MISSEDFRAMES_COUNTERSHIFT 17 /* ETHERNET DMA Tx descriptors Collision Count Shift */ #define ETH_DMATXDESC_COLLISION_COUNTSHIFT 3 /* ETHERNET DMA Tx descriptors Buffer2 Size Shift */ #define ETH_DMATXDESC_BUFFER2_SIZESHIFT 16 /* ETHERNET DMA Rx descriptors Frame Length Shift */ #define ETH_DMARXDESC_FRAME_LENGTHSHIFT 16 /* ETHERNET DMA Rx descriptors Buffer2 Size Shift */ #define ETH_DMARXDESC_BUFFER2_SIZESHIFT 16 /* ETHERNET errors */ #define ETH_ERROR ((uint32_t)0) #define ETH_SUCCESS ((uint32_t)1) /** * @} */ /** @defgroup ETH_Private_Macros * @{ */ /** * @} */ /** @defgroup ETH_Private_Variables * @{ */ /** * @} */ /** @defgroup ETH_Private_FunctionPrototypes * @{ */ /** * @} */ /** @defgroup ETH_Private_Functions * @{ */ /** * @brief Deinitializes the ETHERNET peripheral registers to their default reset values. * @param None * @retval None */ void ETH_DeInit(void) { RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_ETH_MAC, ENABLE); RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_ETH_MAC, DISABLE); } /** * @brief Initializes the ETHERNET peripheral according to the specified * parameters in the ETH_InitStruct . * @param ETH_InitStruct: pointer to a ETH_InitTypeDef structure that contains * the configuration information for the specified ETHERNET peripheral. * @param PHYAddress: external PHY address * @retval ETH_ERROR: Ethernet initialization failed * ETH_SUCCESS: Ethernet successfully initialized */ uint32_t ETH_Init(ETH_InitTypeDef* ETH_InitStruct) { uint32_t tmpreg = 0; __IO uint32_t i = 0; RCC_ClocksTypeDef rcc_clocks; uint32_t hclk = 60000000; __IO uint32_t timeout = 0; /* Check the parameters */ /* MAC --------------------------*/ assert_param(IS_ETH_AUTONEGOTIATION(ETH_InitStruct->ETH_AutoNegotiation)); assert_param(IS_ETH_WATCHDOG(ETH_InitStruct->ETH_Watchdog)); assert_param(IS_ETH_JABBER(ETH_InitStruct->ETH_Jabber)); assert_param(IS_ETH_INTER_FRAME_GAP(ETH_InitStruct->ETH_InterFrameGap)); assert_param(IS_ETH_CARRIER_SENSE(ETH_InitStruct->ETH_CarrierSense)); assert_param(IS_ETH_SPEED(ETH_InitStruct->ETH_Speed)); assert_param(IS_ETH_RECEIVE_OWN(ETH_InitStruct->ETH_ReceiveOwn)); assert_param(IS_ETH_LOOPBACK_MODE(ETH_InitStruct->ETH_LoopbackMode)); assert_param(IS_ETH_DUPLEX_MODE(ETH_InitStruct->ETH_Mode)); assert_param(IS_ETH_CHECKSUM_OFFLOAD(ETH_InitStruct->ETH_ChecksumOffload)); assert_param(IS_ETH_RETRY_TRANSMISSION(ETH_InitStruct->ETH_RetryTransmission)); assert_param(IS_ETH_AUTOMATIC_PADCRC_STRIP(ETH_InitStruct->ETH_AutomaticPadCRCStrip)); assert_param(IS_ETH_BACKOFF_LIMIT(ETH_InitStruct->ETH_BackOffLimit)); assert_param(IS_ETH_DEFERRAL_CHECK(ETH_InitStruct->ETH_DeferralCheck)); assert_param(IS_ETH_RECEIVE_ALL(ETH_InitStruct->ETH_ReceiveAll)); assert_param(IS_ETH_SOURCE_ADDR_FILTER(ETH_InitStruct->ETH_SourceAddrFilter)); assert_param(IS_ETH_CONTROL_FRAMES(ETH_InitStruct->ETH_PassControlFrames)); assert_param(IS_ETH_BROADCAST_FRAMES_RECEPTION(ETH_InitStruct->ETH_BroadcastFramesReception)); assert_param(IS_ETH_DESTINATION_ADDR_FILTER(ETH_InitStruct->ETH_DestinationAddrFilter)); // assert_param(IS_ETH_PROMISCIOUS_MODE(ETH_InitStruct->ETH_PromiscuousMode)); assert_param(IS_ETH_MULTICAST_FRAMES_FILTER(ETH_InitStruct->ETH_MulticastFramesFilter)); assert_param(IS_ETH_UNICAST_FRAMES_FILTER(ETH_InitStruct->ETH_UnicastFramesFilter)); assert_param(IS_ETH_PAUSE_TIME(ETH_InitStruct->ETH_PauseTime)); assert_param(IS_ETH_ZEROQUANTA_PAUSE(ETH_InitStruct->ETH_ZeroQuantaPause)); assert_param(IS_ETH_PAUSE_LOW_THRESHOLD(ETH_InitStruct->ETH_PauseLowThreshold)); assert_param(IS_ETH_UNICAST_PAUSE_FRAME_DETECT(ETH_InitStruct->ETH_UnicastPauseFrameDetect)); assert_param(IS_ETH_RECEIVE_FLOWCONTROL(ETH_InitStruct->ETH_ReceiveFlowControl)); assert_param(IS_ETH_TRANSMIT_FLOWCONTROL(ETH_InitStruct->ETH_TransmitFlowControl)); assert_param(IS_ETH_VLAN_TAG_COMPARISON(ETH_InitStruct->ETH_VLANTagComparison)); assert_param(IS_ETH_VLAN_TAG_IDENTIFIER(ETH_InitStruct->ETH_VLANTagIdentifier)); /* DMA --------------------------*/ assert_param(IS_ETH_DROP_TCPIP_CHECKSUM_FRAME(ETH_InitStruct->ETH_DropTCPIPChecksumErrorFrame)); assert_param(IS_ETH_RECEIVE_STORE_FORWARD(ETH_InitStruct->ETH_ReceiveStoreForward)); assert_param(IS_ETH_FLUSH_RECEIVE_FRAME(ETH_InitStruct->ETH_FlushReceivedFrame)); assert_param(IS_ETH_TRANSMIT_STORE_FORWARD(ETH_InitStruct->ETH_TransmitStoreForward)); assert_param(IS_ETH_TRANSMIT_THRESHOLD_CONTROL(ETH_InitStruct->ETH_TransmitThresholdControl)); assert_param(IS_ETH_FORWARD_ERROR_FRAMES(ETH_InitStruct->ETH_ForwardErrorFrames)); assert_param(IS_ETH_FORWARD_UNDERSIZED_GOOD_FRAMES(ETH_InitStruct->ETH_ForwardUndersizedGoodFrames)); assert_param(IS_ETH_RECEIVE_THRESHOLD_CONTROL(ETH_InitStruct->ETH_ReceiveThresholdControl)); assert_param(IS_ETH_SECOND_FRAME_OPERATE(ETH_InitStruct->ETH_SecondFrameOperate)); assert_param(IS_ETH_ADDRESS_ALIGNED_BEATS(ETH_InitStruct->ETH_AddressAlignedBeats)); assert_param(IS_ETH_FIXED_BURST(ETH_InitStruct->ETH_FixedBurst)); assert_param(IS_ETH_RXDMA_BURST_LENGTH(ETH_InitStruct->ETH_RxDMABurstLength)); assert_param(IS_ETH_TXDMA_BURST_LENGTH(ETH_InitStruct->ETH_TxDMABurstLength)); assert_param(IS_ETH_DMA_DESC_SKIP_LENGTH(ETH_InitStruct->ETH_DescriptorSkipLength)); assert_param(IS_ETH_DMA_ARBITRATION_ROUNDROBIN_RXTX(ETH_InitStruct->ETH_DMAArbitration)); /*-------------------------------- MAC Config ------------------------------*/ /*---------------------- ETHERNET MACMIIAR Configuration -------------------*/ /* Get the ETHERNET MACMIIAR value */ tmpreg = ETH->MACMIIAR; /* Clear CSR Clock Range CR[2:0] bits */ tmpreg &= MACMIIAR_CR_MASK; /* Get hclk frequency value */ RCC_GetClocksFreq(&rcc_clocks); hclk = rcc_clocks.HCLK_Frequency; /* Set CR bits depending on hclk value */ if((hclk >= 20000000)&&(hclk < 35000000)) { /* CSR Clock Range between 20-35 MHz */ tmpreg |= (uint32_t)ETH_MACMIIAR_CR_Div16; } else if((hclk >= 35000000)&&(hclk < 60000000)) { /* CSR Clock Range between 35-60 MHz */ tmpreg |= (uint32_t)ETH_MACMIIAR_CR_Div26; } else if((hclk >= 60000000)&&(hclk < 100000000)) { /* CSR Clock Range between 60-100 MHz */ tmpreg |= (uint32_t)ETH_MACMIIAR_CR_Div42; } else if((hclk >= 100000000)&&(hclk < 150000000)) { /* CSR Clock Range between 100-150 MHz */ tmpreg |= (uint32_t)ETH_MACMIIAR_CR_Div62; } else /* ((hclk >= 150000000)&&(hclk <= 168000000)) */ { /* CSR Clock Range between 150-168 MHz */ tmpreg |= (uint32_t)ETH_MACMIIAR_CR_Div102; } /* Write to ETHERNET MAC MIIAR: configure the ETHERNET CSR Clock Range */ ETH->MACMIIAR = (uint32_t)tmpreg; /*------------------------ ETHERNET MACCR Configuration --------------------*/ /* Get the ETHERNET MACCR value */ tmpreg = ETH->MACCR; /* Clear WD, PCE, PS, TE and RE bits */ tmpreg &= MACCR_CLEAR_MASK; /* Set the WD bit according to ETH_Watchdog value */ /* Set the JD: bit according to ETH_Jabber value */ /* Set the IFG bit according to ETH_InterFrameGap value */ /* Set the DCRS bit according to ETH_CarrierSense value */ /* Set the FES bit according to ETH_Speed value */ /* Set the DO bit according to ETH_ReceiveOwn value */ /* Set the LM bit according to ETH_LoopbackMode value */ /* Set the DM bit according to ETH_Mode value */ /* Set the IPCO bit according to ETH_ChecksumOffload value */ /* Set the DR bit according to ETH_RetryTransmission value */ /* Set the ACS bit according to ETH_AutomaticPadCRCStrip value */ /* Set the BL bit according to ETH_BackOffLimit value */ /* Set the DC bit according to ETH_DeferralCheck value */ tmpreg |= (uint32_t)(ETH_InitStruct->ETH_Watchdog | ETH_InitStruct->ETH_Jabber | ETH_InitStruct->ETH_InterFrameGap | ETH_InitStruct->ETH_CarrierSense | ETH_InitStruct->ETH_Speed | ETH_InitStruct->ETH_ReceiveOwn | ETH_InitStruct->ETH_LoopbackMode | ETH_InitStruct->ETH_Mode | ETH_InitStruct->ETH_ChecksumOffload | ETH_InitStruct->ETH_RetryTransmission | ETH_InitStruct->ETH_AutomaticPadCRCStrip | ETH_InitStruct->ETH_BackOffLimit | ETH_InitStruct->ETH_DeferralCheck); /* Write to ETHERNET MACCR */ ETH->MACCR = (uint32_t)tmpreg; /*----------------------- ETHERNET MACFFR Configuration --------------------*/ /* Set the RA bit according to ETH_ReceiveAll value */ /* Set the SAF and SAIF bits according to ETH_SourceAddrFilter value */ /* Set the PCF bit according to ETH_PassControlFrames value */ /* Set the DBF bit according to ETH_BroadcastFramesReception value */ /* Set the DAIF bit according to ETH_DestinationAddrFilter value */ /* Set the PR bit according to ETH_PromiscuousMode value */ /* Set the PM, HMC and HPF bits according to ETH_MulticastFramesFilter value */ /* Set the HUC and HPF bits according to ETH_UnicastFramesFilter value */ /* Write to ETHERNET MACFFR */ ETH->MACFFR = (uint32_t)(ETH_InitStruct->ETH_ReceiveAll | ETH_InitStruct->ETH_SourceAddrFilter | ETH_InitStruct->ETH_PassControlFrames | ETH_InitStruct->ETH_BroadcastFramesReception | ETH_InitStruct->ETH_DestinationAddrFilter | ETH_InitStruct->ETH_PromiscuousMode | ETH_InitStruct->ETH_MulticastFramesFilter | ETH_InitStruct->ETH_UnicastFramesFilter); /*--------------- ETHERNET MACHTHR and MACHTLR Configuration ---------------*/ /* Write to ETHERNET MACHTHR */ ETH->MACHTHR = (uint32_t)ETH_InitStruct->ETH_HashTableHigh; /* Write to ETHERNET MACHTLR */ ETH->MACHTLR = (uint32_t)ETH_InitStruct->ETH_HashTableLow; /*----------------------- ETHERNET MACFCR Configuration --------------------*/ /* Get the ETHERNET MACFCR value */ tmpreg = ETH->MACFCR; /* Clear xx bits */ tmpreg &= MACFCR_CLEAR_MASK; /* Set the PT bit according to ETH_PauseTime value */ /* Set the DZPQ bit according to ETH_ZeroQuantaPause value */ /* Set the PLT bit according to ETH_PauseLowThreshold value */ /* Set the UP bit according to ETH_UnicastPauseFrameDetect value */ /* Set the RFE bit according to ETH_ReceiveFlowControl value */ /* Set the TFE bit according to ETH_TransmitFlowControl value */ tmpreg |= (uint32_t)((ETH_InitStruct->ETH_PauseTime << 16) | ETH_InitStruct->ETH_ZeroQuantaPause | ETH_InitStruct->ETH_PauseLowThreshold | ETH_InitStruct->ETH_UnicastPauseFrameDetect | ETH_InitStruct->ETH_ReceiveFlowControl | ETH_InitStruct->ETH_TransmitFlowControl); /* Write to ETHERNET MACFCR */ ETH->MACFCR = (uint32_t)tmpreg; /*----------------------- ETHERNET MACVLANTR Configuration -----------------*/ /* Set the ETV bit according to ETH_VLANTagComparison value */ /* Set the VL bit according to ETH_VLANTagIdentifier value */ ETH->MACVLANTR = (uint32_t)(ETH_InitStruct->ETH_VLANTagComparison | ETH_InitStruct->ETH_VLANTagIdentifier); /*-------------------------------- DMA Config ------------------------------*/ /*----------------------- ETHERNET DMAOMR Configuration --------------------*/ /* Get the ETHERNET DMAOMR value */ tmpreg = ETH->DMAOMR; /* Clear xx bits */ tmpreg &= DMAOMR_CLEAR_MASK; /* Set the DT bit according to ETH_DropTCPIPChecksumErrorFrame value */ /* Set the RSF bit according to ETH_ReceiveStoreForward value */ /* Set the DFF bit according to ETH_FlushReceivedFrame value */ /* Set the TSF bit according to ETH_TransmitStoreForward value */ /* Set the TTC bit according to ETH_TransmitThresholdControl value */ /* Set the FEF bit according to ETH_ForwardErrorFrames value */ /* Set the FUF bit according to ETH_ForwardUndersizedGoodFrames value */ /* Set the RTC bit according to ETH_ReceiveThresholdControl value */ /* Set the OSF bit according to ETH_SecondFrameOperate value */ tmpreg |= (uint32_t)(ETH_InitStruct->ETH_DropTCPIPChecksumErrorFrame | ETH_InitStruct->ETH_ReceiveStoreForward | ETH_InitStruct->ETH_FlushReceivedFrame | ETH_InitStruct->ETH_TransmitStoreForward | ETH_InitStruct->ETH_TransmitThresholdControl | ETH_InitStruct->ETH_ForwardErrorFrames | ETH_InitStruct->ETH_ForwardUndersizedGoodFrames | ETH_InitStruct->ETH_ReceiveThresholdControl | ETH_InitStruct->ETH_SecondFrameOperate); /* Write to ETHERNET DMAOMR */ ETH->DMAOMR = (uint32_t)tmpreg; /*----------------------- ETHERNET DMABMR Configuration --------------------*/ /* Set the AAL bit according to ETH_AddressAlignedBeats value */ /* Set the FB bit according to ETH_FixedBurst value */ /* Set the RPBL and 4*PBL bits according to ETH_RxDMABurstLength value */ /* Set the PBL and 4*PBL bits according to ETH_TxDMABurstLength value */ /* Set the DSL bit according to ETH_DesciptorSkipLength value */ /* Set the PR and DA bits according to ETH_DMAArbitration value */ ETH->DMABMR = (uint32_t)(ETH_InitStruct->ETH_AddressAlignedBeats | ETH_InitStruct->ETH_FixedBurst | ETH_InitStruct->ETH_RxDMABurstLength | /* !! if 4xPBL is selected for Tx or Rx it is applied for the other */ ETH_InitStruct->ETH_TxDMABurstLength | (ETH_InitStruct->ETH_DescriptorSkipLength << 2) | ETH_InitStruct->ETH_DMAArbitration | ETH_DMABMR_USP); /* Enable use of separate PBL for Rx and Tx */ #ifdef USE_ENHANCED_DMA_DESCRIPTORS /* Enable the Enhanced DMA descriptors */ ETH->DMABMR |= ETH_DMABMR_EDE; #endif /* USE_ENHANCED_DMA_DESCRIPTORS */ /* Return Ethernet configuration success */ return ETH_SUCCESS; } void ETH_StructInit(ETH_InitTypeDef* ETH_InitStruct) { /* ETH_InitStruct members default value */ /*------------------------ MAC Configuration ---------------------------*/ /* PHY Auto-negotiation enabled */ ETH_InitStruct->ETH_AutoNegotiation = ETH_AutoNegotiation_Enable; /* MAC watchdog enabled: cuts-off long frame */ ETH_InitStruct->ETH_Watchdog = ETH_Watchdog_Enable; /* MAC Jabber enabled in Half-duplex mode */ ETH_InitStruct->ETH_Jabber = ETH_Jabber_Enable; /* Ethernet interframe gap set to 96 bits */ ETH_InitStruct->ETH_InterFrameGap = ETH_InterFrameGap_96Bit; /* Carrier Sense Enabled in Half-Duplex mode */ ETH_InitStruct->ETH_CarrierSense = ETH_CarrierSense_Enable; /* PHY speed configured to 100Mbit/s */ ETH_InitStruct->ETH_Speed = ETH_Speed_100M; /* Receive own Frames in Half-Duplex mode enabled */ ETH_InitStruct->ETH_ReceiveOwn = ETH_ReceiveOwn_Enable; /* MAC MII loopback disabled */ ETH_InitStruct->ETH_LoopbackMode = ETH_LoopbackMode_Disable; /* Full-Duplex mode selected */ ETH_InitStruct->ETH_Mode = ETH_Mode_FullDuplex; /* IPv4 and TCP/UDP/ICMP frame Checksum Offload disabled */ ETH_InitStruct->ETH_ChecksumOffload = ETH_ChecksumOffload_Disable; /* Retry Transmission enabled for half-duplex mode */ ETH_InitStruct->ETH_RetryTransmission = ETH_RetryTransmission_Enable; /* Automatic PAD/CRC strip disabled*/ ETH_InitStruct->ETH_AutomaticPadCRCStrip = ETH_AutomaticPadCRCStrip_Disable; /* half-duplex mode retransmission Backoff time_limit = 10 slot times*/ ETH_InitStruct->ETH_BackOffLimit = ETH_BackOffLimit_10; /* half-duplex mode Deferral check disabled */ ETH_InitStruct->ETH_DeferralCheck = ETH_DeferralCheck_Disable; /* Receive all frames disabled */ ETH_InitStruct->ETH_ReceiveAll = ETH_ReceiveAll_Disable; /* Source address filtering (on the optional MAC addresses) disabled */ ETH_InitStruct->ETH_SourceAddrFilter = ETH_SourceAddrFilter_Disable; /* Do not forward control frames that do not pass the address filtering */ ETH_InitStruct->ETH_PassControlFrames = ETH_PassControlFrames_BlockAll; /* Disable reception of Broadcast frames */ ETH_InitStruct->ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Disable; /* Normal Destination address filtering (not reverse addressing) */ ETH_InitStruct->ETH_DestinationAddrFilter = ETH_DestinationAddrFilter_Normal; /* Promiscuous address filtering mode disabled */ ETH_InitStruct->ETH_PromiscuousMode = ETH_PromiscuousMode_Disable; /* Perfect address filtering for multicast addresses */ ETH_InitStruct->ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_Perfect; /* Perfect address filtering for unicast addresses */ ETH_InitStruct->ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect; /* Initialize hash table high and low regs */ ETH_InitStruct->ETH_HashTableHigh = 0x0; ETH_InitStruct->ETH_HashTableLow = 0x0; /* Flow control config (flow control disabled)*/ ETH_InitStruct->ETH_PauseTime = 0x0; ETH_InitStruct->ETH_ZeroQuantaPause = ETH_ZeroQuantaPause_Disable; ETH_InitStruct->ETH_PauseLowThreshold = ETH_PauseLowThreshold_Minus4; ETH_InitStruct->ETH_UnicastPauseFrameDetect = ETH_UnicastPauseFrameDetect_Disable; ETH_InitStruct->ETH_ReceiveFlowControl = ETH_ReceiveFlowControl_Disable; ETH_InitStruct->ETH_TransmitFlowControl = ETH_TransmitFlowControl_Disable; /* VLANtag config (VLAN field not checked) */ ETH_InitStruct->ETH_VLANTagComparison = ETH_VLANTagComparison_16Bit; ETH_InitStruct->ETH_VLANTagIdentifier = 0x0; /*---------------------- DMA Configuration -------------------------------*/ /* Drops frames with with TCP/IP checksum errors */ ETH_InitStruct->ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Disable; /* Store and forward mode enabled for receive */ ETH_InitStruct->ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Enable; /* Flush received frame that created FIFO overflow */ ETH_InitStruct->ETH_FlushReceivedFrame = ETH_FlushReceivedFrame_Enable; /* Store and forward mode enabled for transmit */ ETH_InitStruct->ETH_TransmitStoreForward = ETH_TransmitStoreForward_Enable; /* Threshold TXFIFO level set to 64 bytes (used when threshold mode is enabled) */ ETH_InitStruct->ETH_TransmitThresholdControl = ETH_TransmitThresholdControl_64Bytes; /* Disable forwarding frames with errors (short frames, CRC,...)*/ ETH_InitStruct->ETH_ForwardErrorFrames = ETH_ForwardErrorFrames_Disable; /* Disable undersized good frames */ ETH_InitStruct->ETH_ForwardUndersizedGoodFrames = ETH_ForwardUndersizedGoodFrames_Disable; /* Threshold RXFIFO level set to 64 bytes (used when Cut-through mode is enabled) */ ETH_InitStruct->ETH_ReceiveThresholdControl = ETH_ReceiveThresholdControl_64Bytes; /* Disable Operate on second frame (transmit a second frame to FIFO without waiting status of previous frame*/ ETH_InitStruct->ETH_SecondFrameOperate = ETH_SecondFrameOperate_Disable; /* DMA works on 32-bit aligned start source and destinations addresses */ ETH_InitStruct->ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Enable; /* Enabled Fixed Burst Mode (mix of INC4, INC8, INC16 and SINGLE DMA transactions */ ETH_InitStruct->ETH_FixedBurst = ETH_FixedBurst_Enable; /* DMA transfer max burst length = 32 beats = 32 x 32bits */ ETH_InitStruct->ETH_RxDMABurstLength = ETH_RxDMABurstLength_32Beat; ETH_InitStruct->ETH_TxDMABurstLength = ETH_TxDMABurstLength_32Beat; /* DMA Ring mode skip length = 0 */ ETH_InitStruct->ETH_DescriptorSkipLength = 0x0; /* Equal priority (round-robin) between transmit and receive DMA engines */ ETH_InitStruct->ETH_DMAArbitration = ETH_DMAArbitration_RoundRobin_RxTx_1_1; } /** * @brief Enables ENET MAC and DMA reception/transmission * @param None * @retval None */ void ETH_Start(void) { /* Enable transmit state machine of the MAC for transmission on the MII */ ETH_MACTransmissionCmd(ENABLE); /* Flush Transmit FIFO */ ETH_FlushTransmitFIFO(); /* Enable receive state machine of the MAC for reception from the MII */ ETH_MACReceptionCmd(ENABLE); /* Start DMA transmission */ ETH_DMATransmissionCmd(ENABLE); /* Start DMA reception */ ETH_DMAReceptionCmd(ENABLE); } /** * @brief Transmits a packet, from application buffer, pointed by ppkt. * @param ppkt: pointer to the application's packet buffer to transmit. * @param FrameLength: Tx Packet size. * @retval ETH_ERROR: in case of Tx desc owned by DMA * ETH_SUCCESS: for correct transmission */ uint32_t ETH_HandleTxPkt(uint8_t *ppkt, uint16_t FrameLength) { uint32_t offset = 0; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if((DMATxDescToSet->Status & ETH_DMATxDesc_OWN) != (uint32_t)RESET) { /* Return ERROR: OWN bit set */ return ETH_ERROR; } /* Copy the frame to be sent into memory pointed by the current ETHERNET DMA Tx descriptor */ for(offset=0; offset<FrameLength; offset++) { (*(__IO uint8_t *)((DMATxDescToSet->Buffer1Addr) + offset)) = (*(ppkt + offset)); } /* Setting the Frame Length: bits[12:0] */ DMATxDescToSet->ControlBufferSize = (FrameLength & ETH_DMATxDesc_TBS1); /* Setting the last segment and first segment bits (in this case a frame is transmitted in one descriptor) */ DMATxDescToSet->Status |= ETH_DMATxDesc_LS | ETH_DMATxDesc_FS; /* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */ DMATxDescToSet->Status |= ETH_DMATxDesc_OWN; /* When Tx Buffer unavailable flag is set: clear it and resume transmission */ if ((ETH->DMASR & ETH_DMASR_TBUS) != (uint32_t)RESET) { /* Clear TBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_TBUS; /* Resume DMA transmission*/ ETH->DMATPDR = 0; } /* Update the ETHERNET DMA global Tx descriptor with next Tx decriptor */ /* Chained Mode */ if((DMATxDescToSet->Status & ETH_DMATxDesc_TCH) != (uint32_t)RESET) { /* Selects the next DMA Tx descriptor list for next buffer to send */ DMATxDescToSet = (ETH_DMADESCTypeDef*) (DMATxDescToSet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMATxDescToSet->Status & ETH_DMATxDesc_TER) != (uint32_t)RESET) { /* Selects the first DMA Tx descriptor for next buffer to send: last Tx descriptor was used */ DMATxDescToSet = (ETH_DMADESCTypeDef*) (ETH->DMATDLAR); } else { /* Selects the next DMA Tx descriptor list for next buffer to send */ DMATxDescToSet = (ETH_DMADESCTypeDef*) ((uint32_t)DMATxDescToSet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } /* Return SUCCESS */ return ETH_SUCCESS; } /** * @brief Receives a packet and copies it to memory pointed by ppkt. * @param ppkt: pointer to the application packet receive buffer. * @retval ETH_ERROR: if there is error in reception * framelength: received packet size if packet reception is correct */ uint32_t ETH_HandleRxPkt(uint8_t *ppkt) { uint32_t offset = 0, framelength = 0; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) != (uint32_t)RESET) { /* Return error: OWN bit set */ return ETH_ERROR; } if(((DMARxDescToGet->Status & ETH_DMARxDesc_ES) == (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)) { /* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */ framelength = ((DMARxDescToGet->Status & ETH_DMARxDesc_FL) >> ETH_DMARXDESC_FRAME_LENGTHSHIFT) - 4; /* Copy the received frame into buffer from memory pointed by the current ETHERNET DMA Rx descriptor */ for(offset=0; offset<framelength; offset++) { (*(ppkt + offset)) = (*(__IO uint8_t *)((DMARxDescToGet->Buffer1Addr) + offset)); } } else { /* Return ERROR */ framelength = ETH_ERROR; } /* Set Own bit of the Rx descriptor Status: gives the buffer back to ETHERNET DMA */ DMARxDescToGet->Status = ETH_DMARxDesc_OWN; /* When Rx Buffer unavailable flag is set: clear it and resume reception */ if ((ETH->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET) { /* Clear RBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_RBUS; /* Resume DMA reception */ ETH->DMARPDR = 0; } /* Update the ETHERNET DMA global Rx descriptor with next Rx decriptor */ /* Chained Mode */ if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RCH) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RER) != (uint32_t)RESET) { /* Selects the first DMA Rx descriptor for next buffer to read: last Rx descriptor was used */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (ETH->DMARDLAR); } else { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) ((uint32_t)DMARxDescToGet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } /* Return Frame Length/ERROR */ return (framelength); } /** * @brief Get the size of received the received packet. * @param None * @retval framelength: received packet size */ uint32_t ETH_GetRxPktSize(void) { uint32_t frameLength = 0; if(((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_ES) == (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)) { /* Get the size of the packet: including 4 bytes of the CRC */ frameLength = ETH_GetDMARxDescFrameLength(DMARxDescToGet); } /* Return Frame Length */ return frameLength; } /** * @brief Drop a Received packet (too small packet, etc...) * @param None * @retval None */ void ETH_DropRxPkt(void) { /* Set Own bit of the Rx descriptor Status: gives the buffer back to ETHERNET DMA */ DMARxDescToGet->Status = ETH_DMARxDesc_OWN; /* Chained Mode */ if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RCH) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RER) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer read: this will be the first Rx descriptor in this case */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (ETH->DMARDLAR); } else { /* Selects the next DMA Rx descriptor list for next buffer read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) ((uint32_t)DMARxDescToGet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } } #ifdef USE_ENHANCED_DMA_DESCRIPTORS /** * @brief Enables or disables the Enhanced descriptor structure. * @param NewState: new state of the Enhanced descriptor structure. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_EnhancedDescriptorCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable enhanced descriptor structure */ ETH->DMABMR |= ETH_DMABMR_EDE; } else { /* Disable enhanced descriptor structure */ ETH->DMABMR &= ~ETH_DMABMR_EDE; } } #endif /* USE_ENHANCED_DMA_DESCRIPTORS */ /*--------------------------------- PHY ------------------------------------*/ /** * @brief Read a PHY register * @param PHYAddress: PHY device address, is the index of one of supported 32 PHY devices. * This parameter can be one of the following values: 0,..,31 * @param PHYReg: PHY register address, is the index of one of the 32 PHY register. * This parameter can be one of the following values: * @arg PHY_BCR: Tranceiver Basic Control Register * @arg PHY_BSR: Tranceiver Basic Status Register * @arg PHY_SR : Tranceiver Status Register * @arg More PHY register could be read depending on the used PHY * @retval ETH_ERROR: in case of timeout * MAC MIIDR register value: Data read from the selected PHY register (correct read ) */ uint16_t ETH_ReadPHYRegister(uint16_t PHYAddress, uint16_t PHYReg) { uint32_t tmpreg = 0; __IO uint32_t timeout = 0; /* Check the parameters */ assert_param(IS_ETH_PHY_ADDRESS(PHYAddress)); assert_param(IS_ETH_PHY_REG(PHYReg)); /* Get the ETHERNET MACMIIAR value */ tmpreg = ETH->MACMIIAR; /* Keep only the CSR Clock Range CR[2:0] bits value */ tmpreg &= ~MACMIIAR_CR_MASK; /* Prepare the MII address register value */ tmpreg |=(((uint32_t)PHYAddress<<11) & ETH_MACMIIAR_PA); /* Set the PHY device address */ tmpreg |=(((uint32_t)PHYReg<<6) & ETH_MACMIIAR_MR); /* Set the PHY register address */ tmpreg &= ~ETH_MACMIIAR_MW; /* Set the read mode */ tmpreg |= ETH_MACMIIAR_MB; /* Set the MII Busy bit */ /* Write the result value into the MII Address register */ ETH->MACMIIAR = tmpreg; /* Check for the Busy flag */ do { timeout++; tmpreg = ETH->MACMIIAR; } while ((tmpreg & ETH_MACMIIAR_MB) && (timeout < (uint32_t)PHY_READ_TO)); /* Return ERROR in case of timeout */ if(timeout == PHY_READ_TO) { return (uint16_t)ETH_ERROR; } /* Return data register value */ return (uint16_t)(ETH->MACMIIDR); } /** * @brief Write to a PHY register * @param PHYAddress: PHY device address, is the index of one of supported 32 PHY devices. * This parameter can be one of the following values: 0,..,31 * @param PHYReg: PHY register address, is the index of one of the 32 PHY register. * This parameter can be one of the following values: * @arg PHY_BCR : Tranceiver Control Register * @arg More PHY register could be written depending on the used PHY * @param PHYValue: the value to write * @retval ETH_ERROR: in case of timeout * ETH_SUCCESS: for correct write */ uint32_t ETH_WritePHYRegister(uint16_t PHYAddress, uint16_t PHYReg, uint16_t PHYValue) { uint32_t tmpreg = 0; __IO uint32_t timeout = 0; /* Check the parameters */ assert_param(IS_ETH_PHY_ADDRESS(PHYAddress)); assert_param(IS_ETH_PHY_REG(PHYReg)); /* Get the ETHERNET MACMIIAR value */ tmpreg = ETH->MACMIIAR; /* Keep only the CSR Clock Range CR[2:0] bits value */ tmpreg &= ~MACMIIAR_CR_MASK; /* Prepare the MII register address value */ tmpreg |=(((uint32_t)PHYAddress<<11) & ETH_MACMIIAR_PA); /* Set the PHY device address */ tmpreg |=(((uint32_t)PHYReg<<6) & ETH_MACMIIAR_MR); /* Set the PHY register address */ tmpreg |= ETH_MACMIIAR_MW; /* Set the write mode */ tmpreg |= ETH_MACMIIAR_MB; /* Set the MII Busy bit */ /* Give the value to the MII data register */ ETH->MACMIIDR = PHYValue; /* Write the result value into the MII Address register */ ETH->MACMIIAR = tmpreg; /* Check for the Busy flag */ do { timeout++; tmpreg = ETH->MACMIIAR; } while ((tmpreg & ETH_MACMIIAR_MB) && (timeout < (uint32_t)PHY_WRITE_TO)); /* Return ERROR in case of timeout */ if(timeout == PHY_WRITE_TO) { return ETH_ERROR; } /* Return SUCCESS */ return ETH_SUCCESS; } /** * @brief Enables or disables the PHY loopBack mode. * @Note: Don't be confused with ETH_MACLoopBackCmd function which enables internal * loopback at MII level * @param PHYAddress: PHY device address, is the index of one of supported 32 PHY devices. * This parameter can be one of the following values: * @param NewState: new state of the PHY loopBack mode. * This parameter can be: ENABLE or DISABLE. * @retval ETH_ERROR: in case of bad PHY configuration * ETH_SUCCESS: for correct PHY configuration */ uint32_t ETH_PHYLoopBackCmd(uint16_t PHYAddress, FunctionalState NewState) { uint16_t tmpreg = 0; /* Check the parameters */ assert_param(IS_ETH_PHY_ADDRESS(PHYAddress)); assert_param(IS_FUNCTIONAL_STATE(NewState)); /* Get the PHY configuration to update it */ tmpreg = ETH_ReadPHYRegister(PHYAddress, PHY_BCR); if (NewState != DISABLE) { /* Enable the PHY loopback mode */ tmpreg |= PHY_Loopback; } else { /* Disable the PHY loopback mode: normal mode */ tmpreg &= (uint16_t)(~(uint16_t)PHY_Loopback); } /* Update the PHY control register with the new configuration */ if(ETH_WritePHYRegister(PHYAddress, PHY_BCR, tmpreg) != (uint32_t)RESET) { return ETH_SUCCESS; } else { /* Return SUCCESS */ return ETH_ERROR; } } /*--------------------------------- MAC ------------------------------------*/ /** * @brief Enables or disables the MAC transmission. * @param NewState: new state of the MAC transmission. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MACTransmissionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC transmission */ ETH->MACCR |= ETH_MACCR_TE; } else { /* Disable the MAC transmission */ ETH->MACCR &= ~ETH_MACCR_TE; } } /** * @brief Enables or disables the MAC reception. * @param NewState: new state of the MAC reception. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MACReceptionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC reception */ ETH->MACCR |= ETH_MACCR_RE; } else { /* Disable the MAC reception */ ETH->MACCR &= ~ETH_MACCR_RE; } } /** * @brief Checks whether the ETHERNET flow control busy bit is set or not. * @param None * @retval The new state of flow control busy status bit (SET or RESET). */ FlagStatus ETH_GetFlowControlBusyStatus(void) { FlagStatus bitstatus = RESET; /* The Flow Control register should not be written to until this bit is cleared */ if ((ETH->MACFCR & ETH_MACFCR_FCBBPA) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Initiate a Pause Control Frame (Full-duplex only). * @param None * @retval None */ void ETH_InitiatePauseControlFrame(void) { /* When Set In full duplex MAC initiates pause control frame */ ETH->MACFCR |= ETH_MACFCR_FCBBPA; } /** * @brief Enables or disables the MAC BackPressure operation activation (Half-duplex only). * @param NewState: new state of the MAC BackPressure operation activation. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_BackPressureActivationCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Activate the MAC BackPressure operation */ /* In Half duplex: during backpressure, when the MAC receives a new frame, the transmitter starts sending a JAM pattern resulting in a collision */ ETH->MACFCR |= ETH_MACFCR_FCBBPA; } else { /* Desactivate the MAC BackPressure operation */ ETH->MACFCR &= ~ETH_MACFCR_FCBBPA; } } /** * @brief Checks whether the specified ETHERNET MAC flag is set or not. * @param ETH_MAC_FLAG: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_MAC_FLAG_TST : Time stamp trigger flag * @arg ETH_MAC_FLAG_MMCT : MMC transmit flag * @arg ETH_MAC_FLAG_MMCR : MMC receive flag * @arg ETH_MAC_FLAG_MMC : MMC flag * @arg ETH_MAC_FLAG_PMT : PMT flag * @retval The new state of ETHERNET MAC flag (SET or RESET). */ FlagStatus ETH_GetMACFlagStatus(uint32_t ETH_MAC_FLAG) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_MAC_GET_FLAG(ETH_MAC_FLAG)); if ((ETH->MACSR & ETH_MAC_FLAG) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Checks whether the specified ETHERNET MAC interrupt has occurred or not. * @param ETH_MAC_IT: specifies the interrupt source to check. * This parameter can be one of the following values: * @arg ETH_MAC_IT_TST : Time stamp trigger interrupt * @arg ETH_MAC_IT_MMCT : MMC transmit interrupt * @arg ETH_MAC_IT_MMCR : MMC receive interrupt * @arg ETH_MAC_IT_MMC : MMC interrupt * @arg ETH_MAC_IT_PMT : PMT interrupt * @retval The new state of ETHERNET MAC interrupt (SET or RESET). */ ITStatus ETH_GetMACITStatus(uint32_t ETH_MAC_IT) { ITStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_MAC_GET_IT(ETH_MAC_IT)); if ((ETH->MACSR & ETH_MAC_IT) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Enables or disables the specified ETHERNET MAC interrupts. * @param ETH_MAC_IT: specifies the ETHERNET MAC interrupt sources to be * enabled or disabled. * This parameter can be any combination of the following values: * @arg ETH_MAC_IT_TST : Time stamp trigger interrupt * @arg ETH_MAC_IT_PMT : PMT interrupt * @param NewState: new state of the specified ETHERNET MAC interrupts. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MACITConfig(uint32_t ETH_MAC_IT, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_ETH_MAC_IT(ETH_MAC_IT)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected ETHERNET MAC interrupts */ ETH->MACIMR &= (~(uint32_t)ETH_MAC_IT); } else { /* Disable the selected ETHERNET MAC interrupts */ ETH->MACIMR |= ETH_MAC_IT; } } /** * @brief configures the selected MAC address. * @param MacAddr: The MAC addres to configure. * This parameter can be one of the following values: * @arg ETH_MAC_Address0 : MAC Address0 * @arg ETH_MAC_Address1 : MAC Address1 * @arg ETH_MAC_Address2 : MAC Address2 * @arg ETH_MAC_Address3 : MAC Address3 * @param Addr: Pointer on MAC address buffer data (6 bytes). * @retval None */ void ETH_MACAddressConfig(uint32_t MacAddr, uint8_t *Addr) { uint32_t tmpreg; /* Check the parameters */ assert_param(IS_ETH_MAC_ADDRESS0123(MacAddr)); /* Calculate the selectecd MAC address high register */ tmpreg = ((uint32_t)Addr[5] << 8) | (uint32_t)Addr[4]; /* Load the selectecd MAC address high register */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg; /* Calculate the selectecd MAC address low register */ tmpreg = ((uint32_t)Addr[3] << 24) | ((uint32_t)Addr[2] << 16) | ((uint32_t)Addr[1] << 8) | Addr[0]; /* Load the selectecd MAC address low register */ (*(__IO uint32_t *) (ETH_MAC_ADDR_LBASE + MacAddr)) = tmpreg; } /** * @brief Get the selected MAC address. * @param MacAddr: The MAC addres to return. * This parameter can be one of the following values: * @arg ETH_MAC_Address0 : MAC Address0 * @arg ETH_MAC_Address1 : MAC Address1 * @arg ETH_MAC_Address2 : MAC Address2 * @arg ETH_MAC_Address3 : MAC Address3 * @param Addr: Pointer on MAC address buffer data (6 bytes). * @retval None */ void ETH_GetMACAddress(uint32_t MacAddr, uint8_t *Addr) { uint32_t tmpreg; /* Check the parameters */ assert_param(IS_ETH_MAC_ADDRESS0123(MacAddr)); /* Get the selectecd MAC address high register */ tmpreg =(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)); /* Calculate the selectecd MAC address buffer */ Addr[5] = ((tmpreg >> 8) & (uint8_t)0xFF); Addr[4] = (tmpreg & (uint8_t)0xFF); /* Load the selectecd MAC address low register */ tmpreg =(*(__IO uint32_t *) (ETH_MAC_ADDR_LBASE + MacAddr)); /* Calculate the selectecd MAC address buffer */ Addr[3] = ((tmpreg >> 24) & (uint8_t)0xFF); Addr[2] = ((tmpreg >> 16) & (uint8_t)0xFF); Addr[1] = ((tmpreg >> 8 ) & (uint8_t)0xFF); Addr[0] = (tmpreg & (uint8_t)0xFF); } /** * @brief Enables or disables the Address filter module uses the specified * ETHERNET MAC address for perfect filtering * @param MacAddr: specifies the ETHERNET MAC address to be used for prfect filtering. * This parameter can be one of the following values: * @arg ETH_MAC_Address1 : MAC Address1 * @arg ETH_MAC_Address2 : MAC Address2 * @arg ETH_MAC_Address3 : MAC Address3 * @param NewState: new state of the specified ETHERNET MAC address use. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MACAddressPerfectFilterCmd(uint32_t MacAddr, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_ETH_MAC_ADDRESS123(MacAddr)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected ETHERNET MAC address for perfect filtering */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) |= ETH_MACA1HR_AE; } else { /* Disable the selected ETHERNET MAC address for perfect filtering */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) &=(~(uint32_t)ETH_MACA1HR_AE); } } /** * @brief Set the filter type for the specified ETHERNET MAC address * @param MacAddr: specifies the ETHERNET MAC address * This parameter can be one of the following values: * @arg ETH_MAC_Address1 : MAC Address1 * @arg ETH_MAC_Address2 : MAC Address2 * @arg ETH_MAC_Address3 : MAC Address3 * @param Filter: specifies the used frame received field for comparaison * This parameter can be one of the following values: * @arg ETH_MAC_AddressFilter_SA : MAC Address is used to compare with the * SA fields of the received frame. * @arg ETH_MAC_AddressFilter_DA : MAC Address is used to compare with the * DA fields of the received frame. * @retval None */ void ETH_MACAddressFilterConfig(uint32_t MacAddr, uint32_t Filter) { /* Check the parameters */ assert_param(IS_ETH_MAC_ADDRESS123(MacAddr)); assert_param(IS_ETH_MAC_ADDRESS_FILTER(Filter)); if (Filter != ETH_MAC_AddressFilter_DA) { /* The selected ETHERNET MAC address is used to compare with the SA fields of the received frame. */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) |= ETH_MACA1HR_SA; } else { /* The selected ETHERNET MAC address is used to compare with the DA fields of the received frame. */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) &=(~(uint32_t)ETH_MACA1HR_SA); } } /** * @brief Set the filter type for the specified ETHERNET MAC address * @param MacAddr: specifies the ETHERNET MAC address * This parameter can be one of the following values: * @arg ETH_MAC_Address1 : MAC Address1 * @arg ETH_MAC_Address2 : MAC Address2 * @arg ETH_MAC_Address3 : MAC Address3 * @param MaskByte: specifies the used address bytes for comparaison * This parameter can be any combination of the following values: * @arg ETH_MAC_AddressMask_Byte6 : Mask MAC Address high reg bits [15:8]. * @arg ETH_MAC_AddressMask_Byte5 : Mask MAC Address high reg bits [7:0]. * @arg ETH_MAC_AddressMask_Byte4 : Mask MAC Address low reg bits [31:24]. * @arg ETH_MAC_AddressMask_Byte3 : Mask MAC Address low reg bits [23:16]. * @arg ETH_MAC_AddressMask_Byte2 : Mask MAC Address low reg bits [15:8]. * @arg ETH_MAC_AddressMask_Byte1 : Mask MAC Address low reg bits [7:0]. * @retval None */ void ETH_MACAddressMaskBytesFilterConfig(uint32_t MacAddr, uint32_t MaskByte) { /* Check the parameters */ assert_param(IS_ETH_MAC_ADDRESS123(MacAddr)); assert_param(IS_ETH_MAC_ADDRESS_MASK(MaskByte)); /* Clear MBC bits in the selected MAC address high register */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) &=(~(uint32_t)ETH_MACA1HR_MBC); /* Set the selected Filetr mask bytes */ (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) |= MaskByte; } /*------------------------ DMA Tx/Rx Desciptors -----------------------------*/ /** * @brief Initializes the DMA Tx descriptors in chain mode. * @param DMATxDescTab: Pointer on the first Tx desc list * @param TxBuff: Pointer on the first TxBuffer list * @param TxBuffCount: Number of the used Tx desc in the list * @retval None */ void ETH_DMATxDescChainInit(ETH_DMADESCTypeDef *DMATxDescTab, uint8_t* TxBuff, uint32_t TxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMATxDesc; /* Set the DMATxDescToSet pointer with the first one of the DMATxDescTab list */ DMATxDescToSet = DMATxDescTab; /* Fill each DMATxDesc descriptor with the right values */ for(i=0; i < TxBuffCount; i++) { /* Get the pointer on the ith member of the Tx Desc list */ DMATxDesc = DMATxDescTab + i; /* Set Second Address Chained bit */ DMATxDesc->Status = ETH_DMATxDesc_TCH; /* Set Buffer1 address pointer */ DMATxDesc->Buffer1Addr = (uint32_t)(&TxBuff[i*ETH_MAX_PACKET_SIZE]); /* Initialize the next descriptor with the Next Desciptor Polling Enable */ if(i < (TxBuffCount-1)) { /* Set next descriptor address register with next descriptor base address */ DMATxDesc->Buffer2NextDescAddr = (uint32_t)(DMATxDescTab+i+1); } else { /* For last descriptor, set next descriptor address register equal to the first descriptor base address */ DMATxDesc->Buffer2NextDescAddr = (uint32_t) DMATxDescTab; } } /* Set Transmit Desciptor List Address Register */ ETH->DMATDLAR = (uint32_t) DMATxDescTab; } /** * @brief Initializes the DMA Tx descriptors in ring mode. * @param DMATxDescTab: Pointer on the first Tx desc list * @param TxBuff1: Pointer on the first TxBuffer1 list * @param TxBuff2: Pointer on the first TxBuffer2 list * @param TxBuffCount: Number of the used Tx desc in the list * Note: see decriptor skip length defined in ETH_DMA_InitStruct * for the number of Words to skip between two unchained descriptors. * @retval None */ void ETH_DMATxDescRingInit(ETH_DMADESCTypeDef *DMATxDescTab, uint8_t *TxBuff1, uint8_t *TxBuff2, uint32_t TxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMATxDesc; /* Set the DMATxDescToSet pointer with the first one of the DMATxDescTab list */ DMATxDescToSet = DMATxDescTab; /* Fill each DMATxDesc descriptor with the right values */ for(i=0; i < TxBuffCount; i++) { /* Get the pointer on the ith member of the Tx Desc list */ DMATxDesc = DMATxDescTab + i; /* Set Buffer1 address pointer */ DMATxDesc->Buffer1Addr = (uint32_t)(&TxBuff1[i*ETH_MAX_PACKET_SIZE]); /* Set Buffer2 address pointer */ DMATxDesc->Buffer2NextDescAddr = (uint32_t)(&TxBuff2[i*ETH_MAX_PACKET_SIZE]); /* Set Transmit End of Ring bit for last descriptor: The DMA returns to the base address of the list, creating a Desciptor Ring */ if(i == (TxBuffCount-1)) { /* Set Transmit End of Ring bit */ DMATxDesc->Status = ETH_DMATxDesc_TER; } } /* Set Transmit Desciptor List Address Register */ ETH->DMATDLAR = (uint32_t) DMATxDescTab; } /** * @brief Checks whether the specified ETHERNET DMA Tx Desc flag is set or not. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param ETH_DMATxDescFlag: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_DMATxDesc_OWN : OWN bit: descriptor is owned by DMA engine * @arg ETH_DMATxDesc_IC : Interrupt on completetion * @arg ETH_DMATxDesc_LS : Last Segment * @arg ETH_DMATxDesc_FS : First Segment * @arg ETH_DMATxDesc_DC : Disable CRC * @arg ETH_DMATxDesc_DP : Disable Pad * @arg ETH_DMATxDesc_TTSE: Transmit Time Stamp Enable * @arg ETH_DMATxDesc_CIC : Checksum insertion control * @arg ETH_DMATxDesc_TER : Transmit End of Ring * @arg ETH_DMATxDesc_TCH : Second Address Chained * @arg ETH_DMATxDesc_TTSS: Tx Time Stamp Status * @arg ETH_DMATxDesc_IHE : IP Header Error * @arg ETH_DMATxDesc_ES : Error summary * @arg ETH_DMATxDesc_JT : Jabber Timeout * @arg ETH_DMATxDesc_FF : Frame Flushed: DMA/MTL flushed the frame due to SW flush * @arg ETH_DMATxDesc_PCE : Payload Checksum Error * @arg ETH_DMATxDesc_LCA : Loss of Carrier: carrier lost during tramsmission * @arg ETH_DMATxDesc_NC : No Carrier: no carrier signal from the tranceiver * @arg ETH_DMATxDesc_LCO : Late Collision: transmission aborted due to collision * @arg ETH_DMATxDesc_EC : Excessive Collision: transmission aborted after 16 collisions * @arg ETH_DMATxDesc_VF : VLAN Frame * @arg ETH_DMATxDesc_CC : Collision Count * @arg ETH_DMATxDesc_ED : Excessive Deferral * @arg ETH_DMATxDesc_UF : Underflow Error: late data arrival from the memory * @arg ETH_DMATxDesc_DB : Deferred Bit * @retval The new state of ETH_DMATxDescFlag (SET or RESET). */ FlagStatus ETH_GetDMATxDescFlagStatus(ETH_DMADESCTypeDef *DMATxDesc, uint32_t ETH_DMATxDescFlag) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMATxDESC_GET_FLAG(ETH_DMATxDescFlag)); if ((DMATxDesc->Status & ETH_DMATxDescFlag) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Returns the specified ETHERNET DMA Tx Desc collision count. * @param DMATxDesc: pointer on a DMA Tx descriptor * @retval The Transmit descriptor collision counter value. */ uint32_t ETH_GetDMATxDescCollisionCount(ETH_DMADESCTypeDef *DMATxDesc) { /* Return the Receive descriptor frame length */ return ((DMATxDesc->Status & ETH_DMATxDesc_CC) >> ETH_DMATXDESC_COLLISION_COUNTSHIFT); } /** * @brief Set the specified DMA Tx Desc Own bit. * @param DMATxDesc: Pointer on a Tx desc * @retval None */ void ETH_SetDMATxDescOwnBit(ETH_DMADESCTypeDef *DMATxDesc) { /* Set the DMA Tx Desc Own bit */ DMATxDesc->Status |= ETH_DMATxDesc_OWN; } /** * @brief Enables or disables the specified DMA Tx Desc Transmit interrupt. * @param DMATxDesc: Pointer on a Tx desc * @param NewState: new state of the DMA Tx Desc transmit interrupt. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescTransmitITConfig(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the DMA Tx Desc Transmit interrupt */ DMATxDesc->Status |= ETH_DMATxDesc_IC; } else { /* Disable the DMA Tx Desc Transmit interrupt */ DMATxDesc->Status &=(~(uint32_t)ETH_DMATxDesc_IC); } } /** * @brief Enables or disables the specified DMA Tx Desc Transmit interrupt. * @param DMATxDesc: Pointer on a Tx desc * @param DMATxDesc_FrameSegment: specifies is the actual Tx desc contain last or first segment. * This parameter can be one of the following values: * @arg ETH_DMATxDesc_LastSegment : actual Tx desc contain last segment * @arg ETH_DMATxDesc_FirstSegment : actual Tx desc contain first segment * @retval None */ void ETH_DMATxDescFrameSegmentConfig(ETH_DMADESCTypeDef *DMATxDesc, uint32_t DMATxDesc_FrameSegment) { /* Check the parameters */ assert_param(IS_ETH_DMA_TXDESC_SEGMENT(DMATxDesc_FrameSegment)); /* Selects the DMA Tx Desc Frame segment */ DMATxDesc->Status |= DMATxDesc_FrameSegment; } /** * @brief Selects the specified ETHERNET DMA Tx Desc Checksum Insertion. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param DMATxDesc_Checksum: specifies is the DMA Tx desc checksum insertion. * This parameter can be one of the following values: * @arg ETH_DMATxDesc_ChecksumByPass : Checksum bypass * @arg ETH_DMATxDesc_ChecksumIPV4Header : IPv4 header checksum * @arg ETH_DMATxDesc_ChecksumTCPUDPICMPSegment : TCP/UDP/ICMP checksum. Pseudo header checksum is assumed to be present * @arg ETH_DMATxDesc_ChecksumTCPUDPICMPFull : TCP/UDP/ICMP checksum fully in hardware including pseudo header * @retval None */ void ETH_DMATxDescChecksumInsertionConfig(ETH_DMADESCTypeDef *DMATxDesc, uint32_t DMATxDesc_Checksum) { /* Check the parameters */ assert_param(IS_ETH_DMA_TXDESC_CHECKSUM(DMATxDesc_Checksum)); /* Set the selected DMA Tx desc checksum insertion control */ DMATxDesc->Status |= DMATxDesc_Checksum; } /** * @brief Enables or disables the DMA Tx Desc CRC. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param NewState: new state of the specified DMA Tx Desc CRC. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescCRCCmd(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Tx Desc CRC */ DMATxDesc->Status &= (~(uint32_t)ETH_DMATxDesc_DC); } else { /* Disable the selected DMA Tx Desc CRC */ DMATxDesc->Status |= ETH_DMATxDesc_DC; } } /** * @brief Enables or disables the DMA Tx Desc end of ring. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param NewState: new state of the specified DMA Tx Desc end of ring. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescEndOfRingCmd(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Tx Desc end of ring */ DMATxDesc->Status |= ETH_DMATxDesc_TER; } else { /* Disable the selected DMA Tx Desc end of ring */ DMATxDesc->Status &= (~(uint32_t)ETH_DMATxDesc_TER); } } /** * @brief Enables or disables the DMA Tx Desc second address chained. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param NewState: new state of the specified DMA Tx Desc second address chained. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescSecondAddressChainedCmd(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Tx Desc second address chained */ DMATxDesc->Status |= ETH_DMATxDesc_TCH; } else { /* Disable the selected DMA Tx Desc second address chained */ DMATxDesc->Status &=(~(uint32_t)ETH_DMATxDesc_TCH); } } /** * @brief Enables or disables the DMA Tx Desc padding for frame shorter than 64 bytes. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param NewState: new state of the specified DMA Tx Desc padding for frame shorter than 64 bytes. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescShortFramePaddingCmd(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Tx Desc padding for frame shorter than 64 bytes */ DMATxDesc->Status &= (~(uint32_t)ETH_DMATxDesc_DP); } else { /* Disable the selected DMA Tx Desc padding for frame shorter than 64 bytes*/ DMATxDesc->Status |= ETH_DMATxDesc_DP; } } /** * @brief Enables or disables the DMA Tx Desc time stamp. * @param DMATxDesc: pointer on a DMA Tx descriptor * @param NewState: new state of the specified DMA Tx Desc time stamp. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATxDescTimeStampCmd(ETH_DMADESCTypeDef *DMATxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Tx Desc time stamp */ DMATxDesc->Status |= ETH_DMATxDesc_TTSE; } else { /* Disable the selected DMA Tx Desc time stamp */ DMATxDesc->Status &=(~(uint32_t)ETH_DMATxDesc_TTSE); } } /** * @brief configures the specified DMA Tx Desc buffer1 and buffer2 sizes. * @param DMATxDesc: Pointer on a Tx desc * @param BufferSize1: specifies the Tx desc buffer1 size. * @param BufferSize2: specifies the Tx desc buffer2 size (put "0" if not used). * @retval None */ void ETH_DMATxDescBufferSizeConfig(ETH_DMADESCTypeDef *DMATxDesc, uint32_t BufferSize1, uint32_t BufferSize2) { /* Check the parameters */ assert_param(IS_ETH_DMATxDESC_BUFFER_SIZE(BufferSize1)); assert_param(IS_ETH_DMATxDESC_BUFFER_SIZE(BufferSize2)); /* Set the DMA Tx Desc buffer1 and buffer2 sizes values */ DMATxDesc->ControlBufferSize |= (BufferSize1 | (BufferSize2 << ETH_DMATXDESC_BUFFER2_SIZESHIFT)); } /** * @brief Initializes the DMA Rx descriptors in chain mode. * @param DMARxDescTab: Pointer on the first Rx desc list * @param RxBuff: Pointer on the first RxBuffer list * @param RxBuffCount: Number of the used Rx desc in the list * @retval None */ void ETH_DMARxDescChainInit(ETH_DMADESCTypeDef *DMARxDescTab, uint8_t *RxBuff, uint32_t RxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMARxDesc; /* Set the DMARxDescToGet pointer with the first one of the DMARxDescTab list */ DMARxDescToGet = DMARxDescTab; /* Fill each DMARxDesc descriptor with the right values */ for(i=0; i < RxBuffCount; i++) { /* Get the pointer on the ith member of the Rx Desc list */ DMARxDesc = DMARxDescTab+i; /* Set Own bit of the Rx descriptor Status */ DMARxDesc->Status = ETH_DMARxDesc_OWN; /* Set Buffer1 size and Second Address Chained bit */ DMARxDesc->ControlBufferSize = ETH_DMARxDesc_RCH | (uint32_t)ETH_MAX_PACKET_SIZE; /* Set Buffer1 address pointer */ DMARxDesc->Buffer1Addr = (uint32_t)(&RxBuff[i*ETH_MAX_PACKET_SIZE]); /* Initialize the next descriptor with the Next Desciptor Polling Enable */ if(i < (RxBuffCount-1)) { /* Set next descriptor address register with next descriptor base address */ DMARxDesc->Buffer2NextDescAddr = (uint32_t)(DMARxDescTab+i+1); } else { /* For last descriptor, set next descriptor address register equal to the first descriptor base address */ DMARxDesc->Buffer2NextDescAddr = (uint32_t)(DMARxDescTab); } } /* Set Receive Desciptor List Address Register */ ETH->DMARDLAR = (uint32_t) DMARxDescTab; } /** * @brief Initializes the DMA Rx descriptors in ring mode. * @param DMARxDescTab: Pointer on the first Rx desc list * @param RxBuff1: Pointer on the first RxBuffer1 list * @param RxBuff2: Pointer on the first RxBuffer2 list * @param RxBuffCount: Number of the used Rx desc in the list * Note: see decriptor skip length defined in ETH_DMA_InitStruct * for the number of Words to skip between two unchained descriptors. * @retval None */ void ETH_DMARxDescRingInit(ETH_DMADESCTypeDef *DMARxDescTab, uint8_t *RxBuff1, uint8_t *RxBuff2, uint32_t RxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMARxDesc; /* Set the DMARxDescToGet pointer with the first one of the DMARxDescTab list */ DMARxDescToGet = DMARxDescTab; /* Fill each DMARxDesc descriptor with the right values */ for(i=0; i < RxBuffCount; i++) { /* Get the pointer on the ith member of the Rx Desc list */ DMARxDesc = DMARxDescTab+i; /* Set Own bit of the Rx descriptor Status */ DMARxDesc->Status = ETH_DMARxDesc_OWN; /* Set Buffer1 size */ DMARxDesc->ControlBufferSize = ETH_MAX_PACKET_SIZE; /* Set Buffer1 address pointer */ DMARxDesc->Buffer1Addr = (uint32_t)(&RxBuff1[i*ETH_MAX_PACKET_SIZE]); /* Set Buffer2 address pointer */ DMARxDesc->Buffer2NextDescAddr = (uint32_t)(&RxBuff2[i*ETH_MAX_PACKET_SIZE]); /* Set Receive End of Ring bit for last descriptor: The DMA returns to the base address of the list, creating a Desciptor Ring */ if(i == (RxBuffCount-1)) { /* Set Receive End of Ring bit */ DMARxDesc->ControlBufferSize |= ETH_DMARxDesc_RER; } } /* Set Receive Desciptor List Address Register */ ETH->DMARDLAR = (uint32_t) DMARxDescTab; } /** * @brief Checks whether the specified ETHERNET Rx Desc flag is set or not. * @param DMARxDesc: pointer on a DMA Rx descriptor * @param ETH_DMARxDescFlag: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_DMARxDesc_OWN: OWN bit: descriptor is owned by DMA engine * @arg ETH_DMARxDesc_AFM: DA Filter Fail for the rx frame * @arg ETH_DMARxDesc_ES: Error summary * @arg ETH_DMARxDesc_DE: Desciptor error: no more descriptors for receive frame * @arg ETH_DMARxDesc_SAF: SA Filter Fail for the received frame * @arg ETH_DMARxDesc_LE: Frame size not matching with length field * @arg ETH_DMARxDesc_OE: Overflow Error: Frame was damaged due to buffer overflow * @arg ETH_DMARxDesc_VLAN: VLAN Tag: received frame is a VLAN frame * @arg ETH_DMARxDesc_FS: First descriptor of the frame * @arg ETH_DMARxDesc_LS: Last descriptor of the frame * @arg ETH_DMARxDesc_IPV4HCE: IPC Checksum Error/Giant Frame: Rx Ipv4 header checksum error * @arg ETH_DMARxDesc_LC: Late collision occurred during reception * @arg ETH_DMARxDesc_FT: Frame type - Ethernet, otherwise 802.3 * @arg ETH_DMARxDesc_RWT: Receive Watchdog Timeout: watchdog timer expired during reception * @arg ETH_DMARxDesc_RE: Receive error: error reported by MII interface * @arg ETH_DMARxDesc_DE: Dribble bit error: frame contains non int multiple of 8 bits * @arg ETH_DMARxDesc_CE: CRC error * @arg ETH_DMARxDesc_MAMPCE: Rx MAC Address/Payload Checksum Error: Rx MAC address matched/ Rx Payload Checksum Error * @retval The new state of ETH_DMARxDescFlag (SET or RESET). */ FlagStatus ETH_GetDMARxDescFlagStatus(ETH_DMADESCTypeDef *DMARxDesc, uint32_t ETH_DMARxDescFlag) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMARxDESC_GET_FLAG(ETH_DMARxDescFlag)); if ((DMARxDesc->Status & ETH_DMARxDescFlag) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } #ifdef USE_ENHANCED_DMA_DESCRIPTORS /** * @brief Checks whether the specified ETHERNET PTP Rx Desc extended flag is set or not. * @param DMAPTPRxDesc: pointer on a DMA PTP Rx descriptor * @param ETH_DMAPTPRxDescFlag: specifies the extended flag to check. * This parameter can be one of the following values: * @arg ETH_DMAPTPRxDesc_PTPV: PTP version * @arg ETH_DMAPTPRxDesc_PTPFT: PTP frame type * @arg ETH_DMAPTPRxDesc_PTPMT: PTP message type * @arg ETH_DMAPTPRxDesc_IPV6PR: IPv6 packet received * @arg ETH_DMAPTPRxDesc_IPV4PR: IPv4 packet received * @arg ETH_DMAPTPRxDesc_IPCB: IP checksum bypassed * @arg ETH_DMAPTPRxDesc_IPPE: IP payload error * @arg ETH_DMAPTPRxDesc_IPHE: IP header error * @arg ETH_DMAPTPRxDesc_IPPT: IP payload type * @retval The new state of ETH_DMAPTPRxDescExtendedFlag (SET or RESET). */ FlagStatus ETH_GetDMAPTPRxDescExtendedFlagStatus(ETH_DMADESCTypeDef *DMAPTPRxDesc, uint32_t ETH_DMAPTPRxDescExtendedFlag) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMAPTPRxDESC_GET_EXTENDED_FLAG(ETH_DMAPTPRxDescExtendedFlag)); if ((DMAPTPRxDesc->ExtendedStatus & ETH_DMAPTPRxDescExtendedFlag) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } #endif /* USE_ENHANCED_DMA_DESCRIPTORS */ /** * @brief Set the specified DMA Rx Desc Own bit. * @param DMARxDesc: Pointer on a Rx desc * @retval None */ void ETH_SetDMARxDescOwnBit(ETH_DMADESCTypeDef *DMARxDesc) { /* Set the DMA Rx Desc Own bit */ DMARxDesc->Status |= ETH_DMARxDesc_OWN; } /** * @brief Returns the specified DMA Rx Desc frame length. * @param DMARxDesc: pointer on a DMA Rx descriptor * @retval The Rx descriptor received frame length. */ uint32_t ETH_GetDMARxDescFrameLength(ETH_DMADESCTypeDef *DMARxDesc) { /* Return the Receive descriptor frame length */ return ((DMARxDesc->Status & ETH_DMARxDesc_FL) >> ETH_DMARXDESC_FRAME_LENGTHSHIFT); } /** * @brief Enables or disables the specified DMA Rx Desc receive interrupt. * @param DMARxDesc: Pointer on a Rx desc * @param NewState: new state of the specified DMA Rx Desc interrupt. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMARxDescReceiveITConfig(ETH_DMADESCTypeDef *DMARxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the DMA Rx Desc receive interrupt */ DMARxDesc->ControlBufferSize &=(~(uint32_t)ETH_DMARxDesc_DIC); } else { /* Disable the DMA Rx Desc receive interrupt */ DMARxDesc->ControlBufferSize |= ETH_DMARxDesc_DIC; } } /** * @brief Enables or disables the DMA Rx Desc end of ring. * @param DMARxDesc: pointer on a DMA Rx descriptor * @param NewState: new state of the specified DMA Rx Desc end of ring. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMARxDescEndOfRingCmd(ETH_DMADESCTypeDef *DMARxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Rx Desc end of ring */ DMARxDesc->ControlBufferSize |= ETH_DMARxDesc_RER; } else { /* Disable the selected DMA Rx Desc end of ring */ DMARxDesc->ControlBufferSize &=(~(uint32_t)ETH_DMARxDesc_RER); } } /** * @brief Enables or disables the DMA Rx Desc second address chained. * @param DMARxDesc: pointer on a DMA Rx descriptor * @param NewState: new state of the specified DMA Rx Desc second address chained. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMARxDescSecondAddressChainedCmd(ETH_DMADESCTypeDef *DMARxDesc, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA Rx Desc second address chained */ DMARxDesc->ControlBufferSize |= ETH_DMARxDesc_RCH; } else { /* Disable the selected DMA Rx Desc second address chained */ DMARxDesc->ControlBufferSize &=(~(uint32_t)ETH_DMARxDesc_RCH); } } /** * @brief Returns the specified ETHERNET DMA Rx Desc buffer size. * @param DMARxDesc: pointer on a DMA Rx descriptor * @param DMARxDesc_Buffer: specifies the DMA Rx Desc buffer. * This parameter can be any one of the following values: * @arg ETH_DMARxDesc_Buffer1 : DMA Rx Desc Buffer1 * @arg ETH_DMARxDesc_Buffer2 : DMA Rx Desc Buffer2 * @retval The Receive descriptor frame length. */ uint32_t ETH_GetDMARxDescBufferSize(ETH_DMADESCTypeDef *DMARxDesc, uint32_t DMARxDesc_Buffer) { /* Check the parameters */ assert_param(IS_ETH_DMA_RXDESC_BUFFER(DMARxDesc_Buffer)); if(DMARxDesc_Buffer != ETH_DMARxDesc_Buffer1) { /* Return the DMA Rx Desc buffer2 size */ return ((DMARxDesc->ControlBufferSize & ETH_DMARxDesc_RBS2) >> ETH_DMARXDESC_BUFFER2_SIZESHIFT); } else { /* Return the DMA Rx Desc buffer1 size */ return (DMARxDesc->ControlBufferSize & ETH_DMARxDesc_RBS1); } } /*--------------------------------- DMA ------------------------------------*/ /** * @brief Resets all MAC subsystem internal registers and logic. * @param None * @retval None */ void ETH_SoftwareReset(void) { /* Set the SWR bit: resets all MAC subsystem internal registers and logic */ /* After reset all the registers holds their respective reset values */ ETH->DMABMR |= ETH_DMABMR_SR; } /** * @brief Checks whether the ETHERNET software reset bit is set or not. * @param None * @retval The new state of DMA Bus Mode register SR bit (SET or RESET). */ FlagStatus ETH_GetSoftwareResetStatus(void) { FlagStatus bitstatus = RESET; if((ETH->DMABMR & ETH_DMABMR_SR) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Checks whether the specified ETHERNET DMA flag is set or not. * @param ETH_DMA_FLAG: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_DMA_FLAG_TST : Time-stamp trigger flag * @arg ETH_DMA_FLAG_PMT : PMT flag * @arg ETH_DMA_FLAG_MMC : MMC flag * @arg ETH_DMA_FLAG_DataTransferError : Error bits 0-data buffer, 1-desc. access * @arg ETH_DMA_FLAG_ReadWriteError : Error bits 0-write trnsf, 1-read transfr * @arg ETH_DMA_FLAG_AccessError : Error bits 0-Rx DMA, 1-Tx DMA * @arg ETH_DMA_FLAG_NIS : Normal interrupt summary flag * @arg ETH_DMA_FLAG_AIS : Abnormal interrupt summary flag * @arg ETH_DMA_FLAG_ER : Early receive flag * @arg ETH_DMA_FLAG_FBE : Fatal bus error flag * @arg ETH_DMA_FLAG_ET : Early transmit flag * @arg ETH_DMA_FLAG_RWT : Receive watchdog timeout flag * @arg ETH_DMA_FLAG_RPS : Receive process stopped flag * @arg ETH_DMA_FLAG_RBU : Receive buffer unavailable flag * @arg ETH_DMA_FLAG_R : Receive flag * @arg ETH_DMA_FLAG_TU : Underflow flag * @arg ETH_DMA_FLAG_RO : Overflow flag * @arg ETH_DMA_FLAG_TJT : Transmit jabber timeout flag * @arg ETH_DMA_FLAG_TBU : Transmit buffer unavailable flag * @arg ETH_DMA_FLAG_TPS : Transmit process stopped flag * @arg ETH_DMA_FLAG_T : Transmit flag * @retval The new state of ETH_DMA_FLAG (SET or RESET). */ FlagStatus ETH_GetDMAFlagStatus(uint32_t ETH_DMA_FLAG) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMA_GET_IT(ETH_DMA_FLAG)); if ((ETH->DMASR & ETH_DMA_FLAG) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Clears the ETHERNET¡¯s DMA pending flag. * @param ETH_DMA_FLAG: specifies the flag to clear. * This parameter can be any combination of the following values: * @arg ETH_DMA_FLAG_NIS : Normal interrupt summary flag * @arg ETH_DMA_FLAG_AIS : Abnormal interrupt summary flag * @arg ETH_DMA_FLAG_ER : Early receive flag * @arg ETH_DMA_FLAG_FBE : Fatal bus error flag * @arg ETH_DMA_FLAG_ETI : Early transmit flag * @arg ETH_DMA_FLAG_RWT : Receive watchdog timeout flag * @arg ETH_DMA_FLAG_RPS : Receive process stopped flag * @arg ETH_DMA_FLAG_RBU : Receive buffer unavailable flag * @arg ETH_DMA_FLAG_R : Receive flag * @arg ETH_DMA_FLAG_TU : Transmit Underflow flag * @arg ETH_DMA_FLAG_RO : Receive Overflow flag * @arg ETH_DMA_FLAG_TJT : Transmit jabber timeout flag * @arg ETH_DMA_FLAG_TBU : Transmit buffer unavailable flag * @arg ETH_DMA_FLAG_TPS : Transmit process stopped flag * @arg ETH_DMA_FLAG_T : Transmit flag * @retval None */ void ETH_DMAClearFlag(uint32_t ETH_DMA_FLAG) { /* Check the parameters */ assert_param(IS_ETH_DMA_FLAG(ETH_DMA_FLAG)); /* Clear the selected ETHERNET DMA FLAG */ ETH->DMASR = (uint32_t) ETH_DMA_FLAG; } /** * @brief Checks whether the specified ETHERNET DMA interrupt has occured or not. * @param ETH_DMA_IT: specifies the interrupt source to check. * This parameter can be one of the following values: * @arg ETH_DMA_IT_TST : Time-stamp trigger interrupt * @arg ETH_DMA_IT_PMT : PMT interrupt * @arg ETH_DMA_IT_MMC : MMC interrupt * @arg ETH_DMA_IT_NIS : Normal interrupt summary * @arg ETH_DMA_IT_AIS : Abnormal interrupt summary * @arg ETH_DMA_IT_ER : Early receive interrupt * @arg ETH_DMA_IT_FBE : Fatal bus error interrupt * @arg ETH_DMA_IT_ET : Early transmit interrupt * @arg ETH_DMA_IT_RWT : Receive watchdog timeout interrupt * @arg ETH_DMA_IT_RPS : Receive process stopped interrupt * @arg ETH_DMA_IT_RBU : Receive buffer unavailable interrupt * @arg ETH_DMA_IT_R : Receive interrupt * @arg ETH_DMA_IT_TU : Underflow interrupt * @arg ETH_DMA_IT_RO : Overflow interrupt * @arg ETH_DMA_IT_TJT : Transmit jabber timeout interrupt * @arg ETH_DMA_IT_TBU : Transmit buffer unavailable interrupt * @arg ETH_DMA_IT_TPS : Transmit process stopped interrupt * @arg ETH_DMA_IT_T : Transmit interrupt * @retval The new state of ETH_DMA_IT (SET or RESET). */ ITStatus ETH_GetDMAITStatus(uint32_t ETH_DMA_IT) { ITStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMA_GET_IT(ETH_DMA_IT)); if ((ETH->DMASR & ETH_DMA_IT) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Clears the ETHERNET¡¯s DMA IT pending bit. * @param ETH_DMA_IT: specifies the interrupt pending bit to clear. * This parameter can be any combination of the following values: * @arg ETH_DMA_IT_NIS : Normal interrupt summary * @arg ETH_DMA_IT_AIS : Abnormal interrupt summary * @arg ETH_DMA_IT_ER : Early receive interrupt * @arg ETH_DMA_IT_FBE : Fatal bus error interrupt * @arg ETH_DMA_IT_ETI : Early transmit interrupt * @arg ETH_DMA_IT_RWT : Receive watchdog timeout interrupt * @arg ETH_DMA_IT_RPS : Receive process stopped interrupt * @arg ETH_DMA_IT_RBU : Receive buffer unavailable interrupt * @arg ETH_DMA_IT_R : Receive interrupt * @arg ETH_DMA_IT_TU : Transmit Underflow interrupt * @arg ETH_DMA_IT_RO : Receive Overflow interrupt * @arg ETH_DMA_IT_TJT : Transmit jabber timeout interrupt * @arg ETH_DMA_IT_TBU : Transmit buffer unavailable interrupt * @arg ETH_DMA_IT_TPS : Transmit process stopped interrupt * @arg ETH_DMA_IT_T : Transmit interrupt * @retval None */ void ETH_DMAClearITPendingBit(uint32_t ETH_DMA_IT) { /* Check the parameters */ assert_param(IS_ETH_DMA_IT(ETH_DMA_IT)); /* Clear the selected ETHERNET DMA IT */ ETH->DMASR = (uint32_t) ETH_DMA_IT; } /** * @brief Returns the ETHERNET DMA Transmit Process State. * @param None * @retval The new ETHERNET DMA Transmit Process State: * This can be one of the following values: * - ETH_DMA_TransmitProcess_Stopped : Stopped - Reset or Stop Tx Command issued * - ETH_DMA_TransmitProcess_Fetching : Running - fetching the Tx descriptor * - ETH_DMA_TransmitProcess_Waiting : Running - waiting for status * - ETH_DMA_TransmitProcess_Reading : unning - reading the data from host memory * - ETH_DMA_TransmitProcess_Suspended : Suspended - Tx Desciptor unavailabe * - ETH_DMA_TransmitProcess_Closing : Running - closing Rx descriptor */ uint32_t ETH_GetTransmitProcessState(void) { return ((uint32_t)(ETH->DMASR & ETH_DMASR_TS)); } /** * @brief Returns the ETHERNET DMA Receive Process State. * @param None * @retval The new ETHERNET DMA Receive Process State: * This can be one of the following values: * - ETH_DMA_ReceiveProcess_Stopped : Stopped - Reset or Stop Rx Command issued * - ETH_DMA_ReceiveProcess_Fetching : Running - fetching the Rx descriptor * - ETH_DMA_ReceiveProcess_Waiting : Running - waiting for packet * - ETH_DMA_ReceiveProcess_Suspended : Suspended - Rx Desciptor unavailable * - ETH_DMA_ReceiveProcess_Closing : Running - closing descriptor * - ETH_DMA_ReceiveProcess_Queuing : Running - queuing the recieve frame into host memory */ uint32_t ETH_GetReceiveProcessState(void) { return ((uint32_t)(ETH->DMASR & ETH_DMASR_RS)); } /** * @brief Clears the ETHERNET transmit FIFO. * @param None * @retval None */ void ETH_FlushTransmitFIFO(void) { /* Set the Flush Transmit FIFO bit */ ETH->DMAOMR |= ETH_DMAOMR_FTF; } /** * @brief Checks whether the ETHERNET transmit FIFO bit is cleared or not. * @param None * @retval The new state of ETHERNET flush transmit FIFO bit (SET or RESET). */ FlagStatus ETH_GetFlushTransmitFIFOStatus(void) { FlagStatus bitstatus = RESET; if ((ETH->DMAOMR & ETH_DMAOMR_FTF) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Enables or disables the DMA transmission. * @param NewState: new state of the DMA transmission. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMATransmissionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the DMA transmission */ ETH->DMAOMR |= ETH_DMAOMR_ST; } else { /* Disable the DMA transmission */ ETH->DMAOMR &= ~ETH_DMAOMR_ST; } } /** * @brief Enables or disables the DMA reception. * @param NewState: new state of the DMA reception. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMAReceptionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the DMA reception */ ETH->DMAOMR |= ETH_DMAOMR_SR; } else { /* Disable the DMA reception */ ETH->DMAOMR &= ~ETH_DMAOMR_SR; } } /** * @brief Enables or disables the specified ETHERNET DMA interrupts. * @param ETH_DMA_IT: specifies the ETHERNET DMA interrupt sources to be * enabled or disabled. * This parameter can be any combination of the following values: * @arg ETH_DMA_IT_NIS : Normal interrupt summary * @arg ETH_DMA_IT_AIS : Abnormal interrupt summary * @arg ETH_DMA_IT_ER : Early receive interrupt * @arg ETH_DMA_IT_FBE : Fatal bus error interrupt * @arg ETH_DMA_IT_ET : Early transmit interrupt * @arg ETH_DMA_IT_RWT : Receive watchdog timeout interrupt * @arg ETH_DMA_IT_RPS : Receive process stopped interrupt * @arg ETH_DMA_IT_RBU : Receive buffer unavailable interrupt * @arg ETH_DMA_IT_R : Receive interrupt * @arg ETH_DMA_IT_TU : Underflow interrupt * @arg ETH_DMA_IT_RO : Overflow interrupt * @arg ETH_DMA_IT_TJT : Transmit jabber timeout interrupt * @arg ETH_DMA_IT_TBU : Transmit buffer unavailable interrupt * @arg ETH_DMA_IT_TPS : Transmit process stopped interrupt * @arg ETH_DMA_IT_T : Transmit interrupt * @param NewState: new state of the specified ETHERNET DMA interrupts. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_DMAITConfig(uint32_t ETH_DMA_IT, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_ETH_DMA_IT(ETH_DMA_IT)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected ETHERNET DMA interrupts */ ETH->DMAIER |= ETH_DMA_IT; } else { /* Disable the selected ETHERNET DMA interrupts */ ETH->DMAIER &=(~(uint32_t)ETH_DMA_IT); } } /** * @brief Checks whether the specified ETHERNET DMA overflow flag is set or not. * @param ETH_DMA_Overflow: specifies the DMA overflow flag to check. * This parameter can be one of the following values: * @arg ETH_DMA_Overflow_RxFIFOCounter : Overflow for FIFO Overflow Counter * @arg ETH_DMA_Overflow_MissedFrameCounter : Overflow for Missed Frame Counter * @retval The new state of ETHERNET DMA overflow Flag (SET or RESET). */ FlagStatus ETH_GetDMAOverflowStatus(uint32_t ETH_DMA_Overflow) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_DMA_GET_OVERFLOW(ETH_DMA_Overflow)); if ((ETH->DMAMFBOCR & ETH_DMA_Overflow) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Get the ETHERNET DMA Rx Overflow Missed Frame Counter value. * @param None * @retval The value of Rx overflow Missed Frame Counter. */ uint32_t ETH_GetRxOverflowMissedFrameCounter(void) { return ((uint32_t)((ETH->DMAMFBOCR & ETH_DMAMFBOCR_MFA)>>ETH_DMA_RX_OVERFLOW_MISSEDFRAMES_COUNTERSHIFT)); } /** * @brief Get the ETHERNET DMA Buffer Unavailable Missed Frame Counter value. * @param None * @retval The value of Buffer unavailable Missed Frame Counter. */ uint32_t ETH_GetBufferUnavailableMissedFrameCounter(void) { return ((uint32_t)(ETH->DMAMFBOCR) & ETH_DMAMFBOCR_MFC); } /** * @brief Get the ETHERNET DMA DMACHTDR register value. * @param None * @retval The value of the current Tx desc start address. */ uint32_t ETH_GetCurrentTxDescStartAddress(void) { return ((uint32_t)(ETH->DMACHTDR)); } /** * @brief Get the ETHERNET DMA DMACHRDR register value. * @param None * @retval The value of the current Rx desc start address. */ uint32_t ETH_GetCurrentRxDescStartAddress(void) { return ((uint32_t)(ETH->DMACHRDR)); } /** * @brief Get the ETHERNET DMA DMACHTBAR register value. * @param None * @retval The value of the current Tx buffer address. */ uint32_t ETH_GetCurrentTxBufferAddress(void) { return ((uint32_t)(ETH->DMACHTBAR)); } /** * @brief Get the ETHERNET DMA DMACHRBAR register value. * @param None * @retval The value of the current Rx buffer address. */ uint32_t ETH_GetCurrentRxBufferAddress(void) { return ((uint32_t)(ETH->DMACHRBAR)); } /** * @brief Resumes the DMA Transmission by writing to the DmaTxPollDemand register * (the data written could be anything). This forces the DMA to resume transmission. * @param None * @retval None. */ void ETH_ResumeDMATransmission(void) { ETH->DMATPDR = 0; } /** * @brief Resumes the DMA Transmission by writing to the DmaRxPollDemand register * (the data written could be anything). This forces the DMA to resume reception. * @param None * @retval None. */ void ETH_ResumeDMAReception(void) { ETH->DMARPDR = 0; } /** * @brief Set the DMA Receive status watchdog timer register value * @param Value: DMA Receive status watchdog timer register value * @retval None */ void ETH_SetReceiveWatchdogTimer(uint8_t Value) { /* Set the DMA Receive status watchdog timer register */ ETH->DMARSWTR = Value; } /*--------------------------------- PMT ------------------------------------*/ /** * @brief Reset Wakeup frame filter register pointer. * @param None * @retval None */ void ETH_ResetWakeUpFrameFilterRegisterPointer(void) { /* Resets the Remote Wake-up Frame Filter register pointer to 0x0000 */ ETH->MACPMTCSR |= ETH_MACPMTCSR_WFFRPR; } /** * @brief Populates the remote wakeup frame registers. * @param Buffer: Pointer on remote WakeUp Frame Filter Register buffer data (8 words). * @retval None */ void ETH_SetWakeUpFrameFilterRegister(uint32_t *Buffer) { uint32_t i = 0; /* Fill Remote Wake-up Frame Filter register with Buffer data */ for(i =0; i<ETH_WAKEUP_REGISTER_LENGTH; i++) { /* Write each time to the same register */ ETH->MACRWUFFR = Buffer[i]; } } /** * @brief Enables or disables any unicast packet filtered by the MAC address * recognition to be a wake-up frame. * @param NewState: new state of the MAC Global Unicast Wake-Up. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_GlobalUnicastWakeUpCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC Global Unicast Wake-Up */ ETH->MACPMTCSR |= ETH_MACPMTCSR_GU; } else { /* Disable the MAC Global Unicast Wake-Up */ ETH->MACPMTCSR &= ~ETH_MACPMTCSR_GU; } } /** * @brief Checks whether the specified ETHERNET PMT flag is set or not. * @param ETH_PMT_FLAG: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_PMT_FLAG_WUFFRPR : Wake-Up Frame Filter Register Poniter Reset * @arg ETH_PMT_FLAG_WUFR : Wake-Up Frame Received * @arg ETH_PMT_FLAG_MPR : Magic Packet Received * @retval The new state of ETHERNET PMT Flag (SET or RESET). */ FlagStatus ETH_GetPMTFlagStatus(uint32_t ETH_PMT_FLAG) { FlagStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_PMT_GET_FLAG(ETH_PMT_FLAG)); if ((ETH->MACPMTCSR & ETH_PMT_FLAG) != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Enables or disables the MAC Wake-Up Frame Detection. * @param NewState: new state of the MAC Wake-Up Frame Detection. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_WakeUpFrameDetectionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC Wake-Up Frame Detection */ ETH->MACPMTCSR |= ETH_MACPMTCSR_WFE; } else { /* Disable the MAC Wake-Up Frame Detection */ ETH->MACPMTCSR &= ~ETH_MACPMTCSR_WFE; } } /** * @brief Enables or disables the MAC Magic Packet Detection. * @param NewState: new state of the MAC Magic Packet Detection. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MagicPacketDetectionCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC Magic Packet Detection */ ETH->MACPMTCSR |= ETH_MACPMTCSR_MPE; } else { /* Disable the MAC Magic Packet Detection */ ETH->MACPMTCSR &= ~ETH_MACPMTCSR_MPE; } } /** * @brief Enables or disables the MAC Power Down. * @param NewState: new state of the MAC Power Down. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_PowerDownCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MAC Power Down */ /* This puts the MAC in power down mode */ ETH->MACPMTCSR |= ETH_MACPMTCSR_PD; } else { /* Disable the MAC Power Down */ ETH->MACPMTCSR &= ~ETH_MACPMTCSR_PD; } } /*--------------------------------- MMC ------------------------------------*/ /** * @brief Preset and Initialize the MMC counters to almost-full value: 0xFFFF_FFF0 (full - 16) * @param None * @retval None */ void ETH_MMCCounterFullPreset(void) { /* Preset and Initialize the MMC counters to almost-full value */ ETH->MMCCR |= ETH_MMCCR_MCFHP | ETH_MMCCR_MCP; } /** * @brief Preset and Initialize the MMC counters to almost-hal value: 0x7FFF_FFF0 (half - 16). * @param None * @retval None */ void ETH_MMCCounterHalfPreset(void) { /* Preset the MMC counters to almost-full value */ ETH->MMCCR &= ~ETH_MMCCR_MCFHP; /* Initialize the MMC counters to almost-half value */ ETH->MMCCR |= ETH_MMCCR_MCP; } /** * @brief Enables or disables the MMC Counter Freeze. * @param NewState: new state of the MMC Counter Freeze. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MMCCounterFreezeCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MMC Counter Freeze */ ETH->MMCCR |= ETH_MMCCR_MCF; } else { /* Disable the MMC Counter Freeze */ ETH->MMCCR &= ~ETH_MMCCR_MCF; } } /** * @brief Enables or disables the MMC Reset On Read. * @param NewState: new state of the MMC Reset On Read. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MMCResetOnReadCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the MMC Counter reset on read */ ETH->MMCCR |= ETH_MMCCR_ROR; } else { /* Disable the MMC Counter reset on read */ ETH->MMCCR &= ~ETH_MMCCR_ROR; } } /** * @brief Enables or disables the MMC Counter Stop Rollover. * @param NewState: new state of the MMC Counter Stop Rollover. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MMCCounterRolloverCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Disable the MMC Counter Stop Rollover */ ETH->MMCCR &= ~ETH_MMCCR_CSR; } else { /* Enable the MMC Counter Stop Rollover */ ETH->MMCCR |= ETH_MMCCR_CSR; } } /** * @brief Resets the MMC Counters. * @param None * @retval None */ void ETH_MMCCountersReset(void) { /* Resets the MMC Counters */ ETH->MMCCR |= ETH_MMCCR_CR; } /** * @brief Enables or disables the specified ETHERNET MMC interrupts. * @param ETH_MMC_IT: specifies the ETHERNET MMC interrupt sources to be enabled or disabled. * This parameter can be any combination of Tx interrupt or * any combination of Rx interrupt (but not both)of the following values: * @arg ETH_MMC_IT_TGF : When Tx good frame counter reaches half the maximum value * @arg ETH_MMC_IT_TGFMSC: When Tx good multi col counter reaches half the maximum value * @arg ETH_MMC_IT_TGFSC : When Tx good single col counter reaches half the maximum value * @arg ETH_MMC_IT_RGUF : When Rx good unicast frames counter reaches half the maximum value * @arg ETH_MMC_IT_RFAE : When Rx alignment error counter reaches half the maximum value * @arg ETH_MMC_IT_RFCE : When Rx crc error counter reaches half the maximum value * @param NewState: new state of the specified ETHERNET MMC interrupts. * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_MMCITConfig(uint32_t ETH_MMC_IT, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_ETH_MMC_IT(ETH_MMC_IT)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if ((ETH_MMC_IT & (uint32_t)0x10000000) != (uint32_t)RESET) { /* Remove register mak from IT */ ETH_MMC_IT &= 0xEFFFFFFF; /* ETHERNET MMC Rx interrupts selected */ if (NewState != DISABLE) { /* Enable the selected ETHERNET MMC interrupts */ ETH->MMCRIMR &=(~(uint32_t)ETH_MMC_IT); } else { /* Disable the selected ETHERNET MMC interrupts */ ETH->MMCRIMR |= ETH_MMC_IT; } } else { /* ETHERNET MMC Tx interrupts selected */ if (NewState != DISABLE) { /* Enable the selected ETHERNET MMC interrupts */ ETH->MMCTIMR &=(~(uint32_t)ETH_MMC_IT); } else { /* Disable the selected ETHERNET MMC interrupts */ ETH->MMCTIMR |= ETH_MMC_IT; } } } /** * @brief Checks whether the specified ETHERNET MMC IT is set or not. * @param ETH_MMC_IT: specifies the ETHERNET MMC interrupt. * This parameter can be one of the following values: * @arg ETH_MMC_IT_TxFCGC: When Tx good frame counter reaches half the maximum value * @arg ETH_MMC_IT_TxMCGC: When Tx good multi col counter reaches half the maximum value * @arg ETH_MMC_IT_TxSCGC: When Tx good single col counter reaches half the maximum value * @arg ETH_MMC_IT_RxUGFC: When Rx good unicast frames counter reaches half the maximum value * @arg ETH_MMC_IT_RxAEC : When Rx alignment error counter reaches half the maximum value * @arg ETH_MMC_IT_RxCEC : When Rx crc error counter reaches half the maximum value * @retval The value of ETHERNET MMC IT (SET or RESET). */ ITStatus ETH_GetMMCITStatus(uint32_t ETH_MMC_IT) { ITStatus bitstatus = RESET; /* Check the parameters */ assert_param(IS_ETH_MMC_GET_IT(ETH_MMC_IT)); if ((ETH_MMC_IT & (uint32_t)0x10000000) != (uint32_t)RESET) { /* ETHERNET MMC Rx interrupts selected */ /* Check if the ETHERNET MMC Rx selected interrupt is enabled and occured */ if ((((ETH->MMCRIR & ETH_MMC_IT) != (uint32_t)RESET)) && ((ETH->MMCRIMR & ETH_MMC_IT) == (uint32_t)RESET)) { bitstatus = SET; } else { bitstatus = RESET; } } else { /* ETHERNET MMC Tx interrupts selected */ /* Check if the ETHERNET MMC Tx selected interrupt is enabled and occured */ if ((((ETH->MMCTIR & ETH_MMC_IT) != (uint32_t)RESET)) && ((ETH->MMCTIMR & ETH_MMC_IT) == (uint32_t)RESET)) { bitstatus = SET; } else { bitstatus = RESET; } } return bitstatus; } /** * @brief Get the specified ETHERNET MMC register value. * @param ETH_MMCReg: specifies the ETHERNET MMC register. * This parameter can be one of the following values: * @arg ETH_MMCCR : MMC CR register * @arg ETH_MMCRIR : MMC RIR register * @arg ETH_MMCTIR : MMC TIR register * @arg ETH_MMCRIMR : MMC RIMR register * @arg ETH_MMCTIMR : MMC TIMR register * @arg ETH_MMCTGFSCCR : MMC TGFSCCR register * @arg ETH_MMCTGFMSCCR: MMC TGFMSCCR register * @arg ETH_MMCTGFCR : MMC TGFCR register * @arg ETH_MMCRFCECR : MMC RFCECR register * @arg ETH_MMCRFAECR : MMC RFAECR register * @arg ETH_MMCRGUFCR : MMC RGUFCRregister * @retval The value of ETHERNET MMC Register value. */ uint32_t ETH_GetMMCRegister(uint32_t ETH_MMCReg) { /* Check the parameters */ assert_param(IS_ETH_MMC_REGISTER(ETH_MMCReg)); /* Return the selected register value */ return (*(__IO uint32_t *)(ETH_MAC_BASE + ETH_MMCReg)); } /*--------------------------------- PTP ------------------------------------*/ /** * @brief Sets the PTP node clock type. * @param ClockType: specifies the PTP node clock type. * This parameter can be one of the following values: * @arg ETH_PTP_OrdinaryClock : Ordinary Clock. * @arg ETH_PTP_BoundaryClock : Boundary Clock. * @arg ETH_PTP_EndToEndTransparentClock : End To End Transparent Clock. * @arg ETH_PTP_PeerToPeerTransparentClock : Peer To Peer Transparent Clock. * @retval None */ void ETH_PTPNodeClockTypeConfig(uint32_t ClockType) { /* Check the parameters */ assert_param(IS_ETH_PTP_TYPE_CLOCK(ClockType)); /* Clear the PTP node clock type */ ETH->PTPTSCR &= (~(uint32_t)ETH_PTPTSCR_TSCNT); /* Set the new PTP node clock type */ ETH->PTPTSCR |= ClockType; } /** * @brief Enables or disables the selected PTP snapshot method. * @param SnapshotMethod: specifies the PTP snapshot method. * This parameter can be one of the following values: * @arg ETH_PTP_SnapshotMasterMessage : snapshot for message relevant to master. * @arg ETH_PTP_SnapshotEventMessage : snapshot for event message. * @arg ETH_PTP_SnapshotIPV4Frames : snapshot for IPv4 frames. * @arg ETH_PTP_SnapshotIPV6Frames : snapshot for IPv6 frames. * @arg ETH_PTP_SnapshotPTPOverEthernetFrames : snapshot for PTP over ethernet frames. * @arg ETH_PTP_SnapshotAllReceivedFrames : snapshot for all received frames. * @param NewState: new state of the PTP snapshot method * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_PTPSnapshotCmd(uint32_t SnapshotMethod, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_ETH_PTP_SNAPSHOT(SnapshotMethod)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected PTP snapshot method */ ETH->PTPTSCR |= SnapshotMethod; } else { /* Disable the selected PTP snapshot method */ ETH->PTPTSCR &= (~(uint32_t)SnapshotMethod); } } /** * @brief Enables or disables the PTP packet snooping version 2 format. * @param NewState: new state of the PTP packet snooping version 2 format * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_PTPPacketSnoopingV2FormatCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the PTP packet snooping version 2 format */ ETH->PTPTSCR |= ETH_PTPTSSR_TSPTPPSV2E; } else { /* Disable the PTP packet snooping version 2 format */ ETH->PTPTSCR &= (~(uint32_t)ETH_PTPTSSR_TSPTPPSV2E); } } /** * @brief Enables or disables the PTP Subsecond rollover. * @param NewState: new state of the PTP Subsecond rollover * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_PTPSubSecondRolloverCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the PTP Subsecond rollover */ ETH->PTPTSCR |= ETH_PTPTSSR_TSSSR; } else { /* Disable the PTP Subsecond rollover */ ETH->PTPTSCR &= (~(uint32_t)ETH_PTPTSSR_TSSSR); } } /** * @brief Updated the PTP block for fine correction with the Time Stamp Addend register value. * @param None * @retval None */ void ETH_EnablePTPTimeStampAddend(void) { /* Enable the PTP block update with the Time Stamp Addend register value */ ETH->PTPTSCR |= ETH_PTPTSCR_TSARU; } /** * @brief Enable the PTP Time Stamp interrupt trigger * @param None * @retval None */ void ETH_EnablePTPTimeStampInterruptTrigger(void) { /* Enable the PTP target time interrupt */ ETH->PTPTSCR |= ETH_PTPTSCR_TSITE; } /** * @brief Updated the PTP system time with the Time Stamp Update register value. * @param None * @retval None */ void ETH_EnablePTPTimeStampUpdate(void) { /* Enable the PTP system time update with the Time Stamp Update register value */ ETH->PTPTSCR |= ETH_PTPTSCR_TSSTU; } /** * @brief Initialize the PTP Time Stamp * @param None * @retval None */ void ETH_InitializePTPTimeStamp(void) { /* Initialize the PTP Time Stamp */ ETH->PTPTSCR |= ETH_PTPTSCR_TSSTI; } /** * @brief Selects the PTP Update method * @param UpdateMethod: the PTP Update method * This parameter can be one of the following values: * @arg ETH_PTP_FineUpdate : Fine Update method * @arg ETH_PTP_CoarseUpdate : Coarse Update method * @retval None */ void ETH_PTPUpdateMethodConfig(uint32_t UpdateMethod) { /* Check the parameters */ assert_param(IS_ETH_PTP_UPDATE(UpdateMethod)); if (UpdateMethod != ETH_PTP_CoarseUpdate) { /* Enable the PTP Fine Update method */ ETH->PTPTSCR |= ETH_PTPTSCR_TSFCU; } else { /* Disable the PTP Coarse Update method */ ETH->PTPTSCR &= (~(uint32_t)ETH_PTPTSCR_TSFCU); } } /** * @brief Enables or disables the PTP time stamp for transmit and receive frames. * @param NewState: new state of the PTP time stamp for transmit and receive frames * This parameter can be: ENABLE or DISABLE. * @retval None */ void ETH_PTPTimeStampCmd(FunctionalState NewState) { /* Check the parameters */ assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the PTP time stamp for transmit and receive frames */ ETH->PTPTSCR |= ETH_PTPTSCR_TSE; } else { /* Disable the PTP time stamp for transmit and receive frames */ ETH->PTPTSCR &= (~(uint32_t)ETH_PTPTSCR_TSE); } } /** * @brief Checks whether the specified ETHERNET PTP flag is set or not. * @param ETH_PTP_FLAG: specifies the flag to check. * This parameter can be one of the following values: * @arg ETH_PTP_FLAG_TSARU : Addend Register Update * @arg ETH_PTP_FLAG_TSITE : Time Stamp Interrupt Trigger Enable * @arg ETH_PTP_FLAG_TSSTU : Time Stamp Update * @arg ETH_PTP_FLAG_TSSTI : Time Stamp Initialize * @retval The new state of ETHERNET PTP Flag (SET or RESET). */ FlagStatus ETH_GetPTPFlagStatus(uint32_t ETH_PTP_FLAG) { uint32_t flagpos = 0x0; FlagStatus bitstatus = RESET; uint32_t ethernetreg = 0x0; /* Check the parameters */ assert_param(IS_ETH_PTP_GET_FLAG(ETH_PTP_FLAG)); /* Get the Flag position */ flagpos &= 0xEFFFFFFF; /* Get the Ethernet register index */ ethernetreg = (((uint32_t)ETH_PTP_FLAG) & 0x10000000); if (ethernetreg != (uint32_t)RESET) /* The flag is in PTPTSCR register */ { flagpos &= ETH->PTPTSCR; } else /* The IT is in PTPTSSR register */ { flagpos &= ETH->PTPTSSR; } if (flagpos != (uint32_t)RESET) { bitstatus = SET; } else { bitstatus = RESET; } return bitstatus; } /** * @brief Sets the system time Sub-Second Increment value. * @param SubSecondValue: specifies the PTP Sub-Second Increment Register value. * @retval None */ void ETH_SetPTPSubSecondIncrement(uint32_t SubSecondValue) { /* Check the parameters */ assert_param(IS_ETH_PTP_SUBSECOND_INCREMENT(SubSecondValue)); /* Set the PTP Sub-Second Increment Register */ ETH->PTPSSIR = SubSecondValue; } /** * @brief Sets the Time Stamp update sign and values. * @param Sign: specifies the PTP Time update value sign. * This parameter can be one of the following values: * @arg ETH_PTP_PositiveTime : positive time value. * @arg ETH_PTP_NegativeTime : negative time value. * @param SecondValue: specifies the PTP Time update second value. * @param SubSecondValue: specifies the PTP Time update sub-second value. * This parameter is a 31 bit value, bit32 correspond to the sign. * @retval None */ void ETH_SetPTPTimeStampUpdate(uint32_t Sign, uint32_t SecondValue, uint32_t SubSecondValue) { /* Check the parameters */ assert_param(IS_ETH_PTP_TIME_SIGN(Sign)); assert_param(IS_ETH_PTP_TIME_STAMP_UPDATE_SUBSECOND(SubSecondValue)); /* Set the PTP Time Update High Register */ ETH->PTPTSHUR = SecondValue; /* Set the PTP Time Update Low Register with sign */ ETH->PTPTSLUR = Sign | SubSecondValue; } /** * @brief Sets the Time Stamp Addend value. * @param Value: specifies the PTP Time Stamp Addend Register value. * @retval None */ void ETH_SetPTPTimeStampAddend(uint32_t Value) { /* Set the PTP Time Stamp Addend Register */ ETH->PTPTSAR = Value; } /** * @brief Sets the Target Time registers values. * @param HighValue: specifies the PTP Target Time High Register value. * @param LowValue: specifies the PTP Target Time Low Register value. * @retval None */ void ETH_SetPTPTargetTime(uint32_t HighValue, uint32_t LowValue) { /* Set the PTP Target Time High Register */ ETH->PTPTTHR = HighValue; /* Set the PTP Target Time Low Register */ ETH->PTPTTLR = LowValue; } /** * @brief Get the specified ETHERNET PTP register value. * @param ETH_PTPReg: specifies the ETHERNET PTP register. * This parameter can be one of the following values: * @arg ETH_PTPTSCR : Sub-Second Increment Register * @arg ETH_PTPSSIR : Sub-Second Increment Register * @arg ETH_PTPTSHR : Time Stamp High Register * @arg ETH_PTPTSLR : Time Stamp Low Register * @arg ETH_PTPTSHUR : Time Stamp High Update Register * @arg ETH_PTPTSLUR : Time Stamp Low Update Register * @arg ETH_PTPTSAR : Time Stamp Addend Register * @arg ETH_PTPTTHR : Target Time High Register * @arg ETH_PTPTTLR : Target Time Low Register * @retval The value of ETHERNET PTP Register value. */ uint32_t ETH_GetPTPRegister(uint32_t ETH_PTPReg) { /* Check the parameters */ assert_param(IS_ETH_PTP_REGISTER(ETH_PTPReg)); /* Return the selected register value */ return (*(__IO uint32_t *)(ETH_MAC_BASE + ETH_PTPReg)); } #ifdef USE_ENHANCED_DMA_DESCRIPTORS /** * @brief Initializes the DMA Tx descriptors in chain mode with PTP. * @param DMAPTPTxDescTab: Pointer on the first Tx desc list * @param TxBuff: Pointer on the first TxBuffer list * @param TxBuffCount: Number of the used Tx desc in the list * @retval None */ void ETH_DMAPTPTxDescChainInit(ETH_DMADESCTypeDef *DMAPTPTxDescTab, uint8_t* TxBuff, uint32_t TxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMAPTPTxDesc; /* Set the DMAPTPTxDescToSet pointer with the first one of the DMAPTPTxDescTab list */ DMAPTPTxDescToSet = DMAPTPTxDescTab; /* Fill each DMAPTPTxDesc descriptor with the right values */ for(i=0; i < TxBuffCount; i++) { /* Get the pointer on the ith member of the Tx Desc list */ DMAPTPTxDesc = DMAPTPTxDescTab + i; /* Set Second Address Chained bit */ DMAPTPTxDesc->Status = ETH_DMATxDesc_TCH | ETH_DMATxDesc_TTSE; /* Set Buffer1 address pointer */ DMAPTPTxDesc->Buffer1Addr = (uint32_t)(&TxBuff[i*ETH_MAX_PACKET_SIZE]); /* Initialize the next descriptor with the Next Desciptor Polling Enable */ if(i < (TxBuffCount-1)) { /* Set next descriptor address register with next descriptor base address */ DMAPTPTxDesc->Buffer2NextDescAddr = (uint32_t)(DMAPTPTxDescTab+i+1); } else { /* For last descriptor, set next descriptor address register equal to the first descriptor base address */ DMAPTPTxDesc->Buffer2NextDescAddr = (uint32_t) DMAPTPTxDescTab; } } /* Set Transmit Desciptor List Address Register */ ETH->DMATDLAR = (uint32_t) DMAPTPTxDescTab; } /** * @brief Initializes the DMA Rx descriptors in chain mode. * @param DMAPTPRxDescTab: Pointer on the first Rx desc list * @param RxBuff: Pointer on the first RxBuffer list * @param RxBuffCount: Number of the used Rx desc in the list * @retval None */ void ETH_DMAPTPRxDescChainInit(ETH_DMADESCTypeDef *DMAPTPRxDescTab, uint8_t *RxBuff, uint32_t RxBuffCount) { uint32_t i = 0; ETH_DMADESCTypeDef *DMAPTPRxDesc; /* Set the DMAPTPRxDescToGet pointer with the first one of the DMAPTPRxDescTab list */ DMAPTPRxDescToGet = DMAPTPRxDescTab; /* Fill each DMAPTPRxDesc descriptor with the right values */ for(i=0; i < RxBuffCount; i++) { /* Get the pointer on the ith member of the Rx Desc list */ DMAPTPRxDesc = DMAPTPRxDescTab+i; /* Set Own bit of the Rx descriptor Status */ DMAPTPRxDesc->Status = ETH_DMARxDesc_OWN; /* Set Buffer1 size and Second Address Chained bit */ DMAPTPRxDesc->ControlBufferSize = ETH_DMARxDesc_RCH | (uint32_t)ETH_MAX_PACKET_SIZE; /* Set Buffer1 address pointer */ DMAPTPRxDesc->Buffer1Addr = (uint32_t)(&RxBuff[i*ETH_MAX_PACKET_SIZE]); /* Initialize the next descriptor with the Next Desciptor Polling Enable */ if(i < (RxBuffCount-1)) { /* Set next descriptor address register with next descriptor base address */ DMAPTPRxDesc->Buffer2NextDescAddr = (uint32_t)(DMAPTPRxDescTab+i+1); } else { /* For last descriptor, set next descriptor address register equal to the first descriptor base address */ DMAPTPRxDesc->Buffer2NextDescAddr = (uint32_t)(DMAPTPRxDescTab); } } /* Set Receive Desciptor List Address Register */ ETH->DMARDLAR = (uint32_t) DMAPTPRxDescTab; } #endif /* USE_ENHANCED_DMA_DESCRIPTORS */ /** * @brief Transmits a packet, from application buffer, pointed by ppkt with Time Stamp values. * @param ppkt: pointer to application packet buffer to transmit. * @param FrameLength: Tx Packet size. * @param PTPTxTab: Pointer on the first PTP Tx table to store Time stamp values. * @retval ETH_ERROR: in case of Tx desc owned by DMA * ETH_SUCCESS: for correct transmission */ uint32_t ETH_HandlePTPTxPkt(uint8_t *ppkt, uint16_t FrameLength, uint32_t *PTPTxTab) { uint32_t offset = 0, timeout = 0; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if((DMAPTPTxDescToSet->Status & ETH_DMATxDesc_OWN) != (uint32_t)RESET) { /* Return ERROR: OWN bit set */ return ETH_ERROR; } /* Copy the frame to be sent into memory pointed by the current ETHERNET DMA Tx descriptor */ for(offset=0; offset<FrameLength; offset++) { (*(__IO uint8_t *)((DMAPTPTxDescToSet->Buffer1Addr) + offset)) = (*(ppkt + offset)); } /* Setting the Frame Length: bits[12:0] */ DMAPTPTxDescToSet->ControlBufferSize = (FrameLength & ETH_DMATxDesc_TBS1); /* Setting the last segment and first segment bits (in this case a frame is transmitted in one descriptor) */ DMAPTPTxDescToSet->Status |= ETH_DMATxDesc_LS | ETH_DMATxDesc_FS; /* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */ DMAPTPTxDescToSet->Status |= ETH_DMATxDesc_OWN; /* When Tx Buffer unavailable flag is set: clear it and resume transmission */ if ((ETH->DMASR & ETH_DMASR_TBUS) != (uint32_t)RESET) { /* Clear TBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_TBUS; /* Resume DMA transmission*/ ETH->DMATPDR = 0; } /* Wait for ETH_DMATxDesc_TTSS flag to be set */ do { timeout++; } while (!(DMAPTPTxDescToSet->Status & ETH_DMATxDesc_TTSS) && (timeout < 0xFFFF)); /* Return ERROR in case of timeout */ if(timeout == PHY_READ_TO) { return ETH_ERROR; } /* Clear the DMATxDescToSet status register TTSS flag */ DMATxDescToSet->Status &= ~ETH_DMATxDesc_TTSS; *PTPTxTab++ = DMAPTPTxDescToSet->TimeStampLow; *PTPTxTab = DMAPTPTxDescToSet->TimeStampHigh; /* Update the ETHERNET DMA global Tx descriptor with next Tx decriptor */ /* Chained Mode */ if((DMAPTPTxDescToSet->Status & ETH_DMATxDesc_TCH) != (uint32_t)RESET) { /* Selects the next DMA Tx descriptor list for next buffer to send */ DMAPTPTxDescToSet = (ETH_DMADESCTypeDef*) (DMAPTPTxDescToSet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMAPTPTxDescToSet->Status & ETH_DMATxDesc_TER) != (uint32_t)RESET) { /* Selects the first DMA Tx descriptor for next buffer to send: last Tx descriptor was used */ DMAPTPTxDescToSet = (ETH_DMADESCTypeDef*) (ETH->DMATDLAR); } else { /* Selects the next DMA Tx descriptor list for next buffer to send */ DMAPTPTxDescToSet = (ETH_DMADESCTypeDef*) ((uint32_t)DMAPTPTxDescToSet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } /* Return SUCCESS */ return ETH_SUCCESS; } /** * @brief Receives a packet and copies it to memory pointed by ppkt with Time Stamp values. * @param ppkt: pointer to application packet receive buffer. * @param PTPRxTab: Pointer on the first PTP Rx table to store Time stamp values. * @retval ETH_ERROR: if there is error in reception * framelength: received packet size if packet reception is correct */ uint32_t ETH_HandlePTPRxPkt(uint8_t *ppkt, uint32_t *PTPRxTab) { uint32_t offset = 0, framelength = 0; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if((DMAPTPRxDescToGet->Status & ETH_DMARxDesc_OWN) != (uint32_t)RESET) { /* Return error: OWN bit set */ return ETH_ERROR; } if(((DMAPTPRxDescToGet->Status & ETH_DMARxDesc_ES) == (uint32_t)RESET) && ((DMAPTPRxDescToGet->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET) && ((DMAPTPRxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)) { /* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */ framelength = ((DMAPTPRxDescToGet->Status & ETH_DMARxDesc_FL) >> ETH_DMARXDESC_FRAME_LENGTHSHIFT) - 4; /* Copy the received frame into buffer from memory pointed by the current ETHERNET DMA Rx descriptor */ for(offset=0; offset<framelength; offset++) { (*(ppkt + offset)) = (*(__IO uint8_t *)((DMAPTPRxDescToGet->Buffer1Addr) + offset)); } } else { /* Return ERROR */ framelength = ETH_ERROR; } *PTPRxTab++ = DMAPTPRxDescToGet->TimeStampLow; *PTPRxTab = DMAPTPRxDescToGet->TimeStampHigh; /* Set Own bit of the Rx descriptor Status: gives the buffer back to ETHERNET DMA */ DMAPTPRxDescToGet->Status = ETH_DMARxDesc_OWN; /* When Rx Buffer unavailable flag is set: clear it and resume reception */ if ((ETH->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET) { /* Clear RBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_RBUS; /* Resume DMA reception */ ETH->DMARPDR = 0; } /* Update the ETHERNET DMA global Rx descriptor with next Rx decriptor */ /* Chained Mode */ if((DMAPTPRxDescToGet->ControlBufferSize & ETH_DMARxDesc_RCH) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMAPTPRxDescToGet = (ETH_DMADESCTypeDef*) (DMAPTPRxDescToGet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMAPTPRxDescToGet->ControlBufferSize & ETH_DMARxDesc_RER) != (uint32_t)RESET) { /* Selects the first DMA Rx descriptor for next buffer to read: last Rx descriptor was used */ DMAPTPRxDescToGet = (ETH_DMADESCTypeDef*) (ETH->DMARDLAR); } else { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMAPTPRxDescToGet = (ETH_DMADESCTypeDef*) ((uint32_t)DMAPTPRxDescToGet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } /* Return Frame Length/ERROR */ return (framelength); } /** * @} */ /** * @} */ /******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/ /* * STM32 Eth Driver for RT-Thread * Change Logs: * Date Author Notes * 2009-10-05 Bernard eth interface driver for STM32F107 CL */ #include <rtthread.h> #include <netif/ethernetif.h> #include "lwipopts.h" /* debug option */ //#define ETH_DEBUG //#define ETH_RX_DUMP //#define ETH_TX_DUMP #ifdef ETH_DEBUG #define STM32_ETH_PRINTF rt_kprintf #else #define STM32_ETH_PRINTF(...) #endif #define ETH_RXBUFNB 4 #define ETH_TXBUFNB 2 static ETH_DMADESCTypeDef DMARxDscrTab[ETH_RXBUFNB], DMATxDscrTab[ETH_TXBUFNB]; static rt_uint8_t Rx_Buff[ETH_RXBUFNB][ETH_MAX_PACKET_SIZE], Tx_Buff[ETH_TXBUFNB][ETH_MAX_PACKET_SIZE]; #define MAX_ADDR_LEN 6 struct rt_stm32_eth { /* inherit from ethernet device */ struct eth_device parent; /* interface address info. */ rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */ uint32_t ETH_Speed; /*!< @ref ETH_Speed */ uint32_t ETH_Mode; /*!< @ref ETH_Duplex_Mode */ }; static struct rt_stm32_eth stm32_eth_device; static struct rt_semaphore tx_wait; static rt_bool_t tx_is_waiting = RT_FALSE; /* interrupt service routine */ void ETH_IRQHandler(void) { rt_uint32_t status, ier; /* enter interrupt */ rt_interrupt_enter(); status = ETH->DMASR; ier = ETH->DMAIER; if(status & ETH_DMA_IT_MMC) { STM32_ETH_PRINTF("ETH_DMA_IT_MMC\r\n"); ETH_DMAClearITPendingBit(ETH_DMA_IT_MMC); } if(status & ETH_DMA_IT_NIS) { rt_uint32_t nis_clear = ETH_DMA_IT_NIS; /* [0]:Transmit Interrupt. */ if((status & ier) & ETH_DMA_IT_T) /* packet transmission */ { STM32_ETH_PRINTF("ETH_DMA_IT_T\r\n"); if (tx_is_waiting == RT_TRUE) { tx_is_waiting = RT_FALSE; rt_sem_release(&tx_wait); } nis_clear |= ETH_DMA_IT_T; } /* [2]:Transmit Buffer Unavailable. */ /* [6]:Receive Interrupt. */ if((status & ier) & ETH_DMA_IT_R) /* packet reception */ { STM32_ETH_PRINTF("ETH_DMA_IT_R\r\n"); /* a frame has been received */ eth_device_ready(&(stm32_eth_device.parent)); nis_clear |= ETH_DMA_IT_R; } /* [14]:Early Receive Interrupt. */ ETH_DMAClearITPendingBit(nis_clear); } if(status & ETH_DMA_IT_AIS) { rt_uint32_t ais_clear = ETH_DMA_IT_AIS; STM32_ETH_PRINTF("ETH_DMA_IT_AIS\r\n"); /* [1]:Transmit Process Stopped. */ if(status & ETH_DMA_IT_TPS) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_TPS\r\n"); ais_clear |= ETH_DMA_IT_TPS; } /* [3]:Transmit Jabber Timeout. */ if(status & ETH_DMA_IT_TJT) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_TJT\r\n"); ais_clear |= ETH_DMA_IT_TJT; } /* [4]: Receive FIFO Overflow. */ if(status & ETH_DMA_IT_RO) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_RO\r\n"); ais_clear |= ETH_DMA_IT_RO; } /* [5]: Transmit Underflow. */ if(status & ETH_DMA_IT_TU) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_TU\r\n"); ais_clear |= ETH_DMA_IT_TU; } /* [7]: Receive Buffer Unavailable. */ if(status & ETH_DMA_IT_RBU) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_RBU\r\n"); ais_clear |= ETH_DMA_IT_RBU; } /* [8]: Receive Process Stopped. */ if(status & ETH_DMA_IT_RPS) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_RPS\r\n"); ais_clear |= ETH_DMA_IT_RPS; } /* [9]: Receive Watchdog Timeout. */ if(status & ETH_DMA_IT_RWT) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_RWT\r\n"); ais_clear |= ETH_DMA_IT_RWT; } /* [10]: Early Transmit Interrupt. */ /* [13]: Fatal Bus Error. */ if(status & ETH_DMA_IT_FBE) { STM32_ETH_PRINTF("AIS ETH_DMA_IT_FBE\r\n"); ais_clear |= ETH_DMA_IT_FBE; } ETH_DMAClearITPendingBit(ais_clear); } /* leave interrupt */ rt_interrupt_leave(); } /* RT-Thread Device Interface */ #include <rtthread.h> #include <netif/ethernetif.h> #include <netif/etharp.h> #include <lwip/icmp.h> #include "lwipopts.h" /* initialize the interface */ static rt_err_t rt_stm32_eth_init(rt_device_t dev) { struct rt_stm32_eth * stm32_eth = (struct rt_stm32_eth *)dev; ETH_InitTypeDef ETH_InitStructure; /* Enable ETHERNET clock */ RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_ETH_MAC | RCC_AHB1Periph_ETH_MAC_Tx | RCC_AHB1Periph_ETH_MAC_Rx, ENABLE); SYSCFG_ETH_MediaInterfaceConfig(SYSCFG_ETH_MediaInterface_RMII); /* 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(Ð_InitStructure); /* Fill ETH_InitStructure parametrs */ /*------------------------ MAC -----------------------------------*/ ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Enable; ETH_InitStructure.ETH_Speed = stm32_eth->ETH_Speed; ETH_InitStructure.ETH_Mode = stm32_eth->ETH_Mode; ETH_InitStructure.ETH_LoopbackMode = ETH_LoopbackMode_Disable; ETH_InitStructure.ETH_RetryTransmission = ETH_RetryTransmission_Disable; 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_Perfect; 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 */ ETH_Init(Ð_InitStructure); /* Enable DMA Receive interrupt (need to enable in this case Normal interrupt) */ ETH_DMAITConfig(ETH_DMA_IT_NIS | ETH_DMA_IT_R | ETH_DMA_IT_T, ENABLE); /* Initialize Tx Descriptors list: Chain Mode */ ETH_DMATxDescChainInit(DMATxDscrTab, &Tx_Buff[0][0], ETH_TXBUFNB); /* Initialize Rx Descriptors list: Chain Mode */ ETH_DMARxDescChainInit(DMARxDscrTab, &Rx_Buff[0][0], ETH_RXBUFNB); /* MAC address configuration */ ETH_MACAddressConfig(ETH_MAC_Address0, (u8*)&stm32_eth_device.dev_addr[0]); /* Enable MAC and DMA transmission and reception */ ETH_Start(); return RT_EOK; } static rt_err_t rt_stm32_eth_open(rt_device_t dev, rt_uint16_t oflag) { return RT_EOK; } static rt_err_t rt_stm32_eth_close(rt_device_t dev) { return RT_EOK; } static rt_size_t rt_stm32_eth_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size) { rt_set_errno(-RT_ENOSYS); return 0; } static rt_size_t rt_stm32_eth_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size) { rt_set_errno(-RT_ENOSYS); return 0; } static rt_err_t rt_stm32_eth_control(rt_device_t dev, int cmd, void *args) { switch(cmd) { case NIOCTL_GADDR: /* get mac address */ if(args) rt_memcpy(args, stm32_eth_device.dev_addr, 6); else return -RT_ERROR; break; default : break; } return RT_EOK; } /* ethernet device interface */ /* transmit packet. */ rt_err_t rt_stm32_eth_tx( rt_device_t dev, struct pbuf* p) { struct pbuf* q; rt_uint32_t offset; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ while ((DMATxDescToSet->Status & ETH_DMATxDesc_OWN) != (uint32_t)RESET) { rt_err_t result; rt_uint32_t level; level = rt_hw_interrupt_disable(); tx_is_waiting = RT_TRUE; rt_hw_interrupt_enable(level); /* it's own bit set, wait it */ result = rt_sem_take(&tx_wait, RT_WAITING_FOREVER); if (result == RT_EOK) break; if (result == -RT_ERROR) return -RT_ERROR; } offset = 0; for (q = p; q != NULL; q = q->next) { uint8_t *to; /* Copy the frame to be sent into memory pointed by the current ETHERNET DMA Tx descriptor */ to = (uint8_t*)((DMATxDescToSet->Buffer1Addr) + offset); memcpy(to, q->payload, q->len); offset += q->len; } #ifdef ETH_TX_DUMP { rt_uint32_t i; rt_uint8_t *ptr = (rt_uint8_t*)(DMATxDescToSet->Buffer1Addr); STM32_ETH_PRINTF("tx_dump, len:%d\r\n", p->tot_len); for(i=0; i<p->tot_len; i++) { STM32_ETH_PRINTF("%02x ",*ptr); ptr++; if(((i+1)%8) == 0) { STM32_ETH_PRINTF(" "); } if(((i+1)%16) == 0) { STM32_ETH_PRINTF("\r\n"); } } STM32_ETH_PRINTF("\r\ndump done!\r\n"); } #endif /* Setting the Frame Length: bits[12:0] */ DMATxDescToSet->ControlBufferSize = (p->tot_len & ETH_DMATxDesc_TBS1); /* Setting the last segment and first segment bits (in this case a frame is transmitted in one descriptor) */ DMATxDescToSet->Status |= ETH_DMATxDesc_LS | ETH_DMATxDesc_FS; /* Enable TX Completion Interrupt */ DMATxDescToSet->Status |= ETH_DMATxDesc_IC; #ifdef CHECKSUM_BY_HARDWARE DMATxDescToSet->Status |= ETH_DMATxDesc_ChecksumTCPUDPICMPFull; /* clean ICMP checksum STM32F need */ { struct eth_hdr *ethhdr = (struct eth_hdr *)(DMATxDescToSet->Buffer1Addr); /* is IP ? */ if( ethhdr->type == htons(ETHTYPE_IP) ) { struct ip_hdr *iphdr = (struct ip_hdr *)(DMATxDescToSet->Buffer1Addr + SIZEOF_ETH_HDR); /* is ICMP ? */ if( IPH_PROTO(iphdr) == IP_PROTO_ICMP ) { struct icmp_echo_hdr *iecho = (struct icmp_echo_hdr *)(DMATxDescToSet->Buffer1Addr + SIZEOF_ETH_HDR + sizeof(struct ip_hdr) ); iecho->chksum = 0; } } } #endif /* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */ DMATxDescToSet->Status |= ETH_DMATxDesc_OWN; /* When Tx Buffer unavailable flag is set: clear it and resume transmission */ if ((ETH->DMASR & ETH_DMASR_TBUS) != (uint32_t)RESET) { /* Clear TBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_TBUS; /* Transmit Poll Demand to resume DMA transmission*/ ETH->DMATPDR = 0; } /* Update the ETHERNET DMA global Tx descriptor with next Tx decriptor */ /* Chained Mode */ /* Selects the next DMA Tx descriptor list for next buffer to send */ DMATxDescToSet = (ETH_DMADESCTypeDef*) (DMATxDescToSet->Buffer2NextDescAddr); /* Return SUCCESS */ return RT_EOK; } /* reception packet. */ struct pbuf *rt_stm32_eth_rx(rt_device_t dev) { struct pbuf* p; rt_uint32_t offset = 0, framelength = 0; /* init p pointer */ p = RT_NULL; /* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */ if(((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) != (uint32_t)RESET)) return p; if (((DMARxDescToGet->Status & ETH_DMARxDesc_ES) == (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET) && ((DMARxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)) { /* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */ framelength = ((DMARxDescToGet->Status & ETH_DMARxDesc_FL) >> ETH_DMARXDESC_FRAME_LENGTHSHIFT) - 4; /* allocate buffer */ p = pbuf_alloc(PBUF_LINK, framelength, PBUF_RAM); if (p != RT_NULL) { struct pbuf* q; for (q = p; q != RT_NULL; q= q->next) { /* Copy the received frame into buffer from memory pointed by the current ETHERNET DMA Rx descriptor */ memcpy(q->payload, (uint8_t *)((DMARxDescToGet->Buffer1Addr) + offset), q->len); offset += q->len; } #ifdef ETH_RX_DUMP { rt_uint32_t i; rt_uint8_t *ptr = (rt_uint8_t*)(DMARxDescToGet->Buffer1Addr); STM32_ETH_PRINTF("rx_dump, len:%d\r\n", p->tot_len); for(i=0; i<p->tot_len; i++) { STM32_ETH_PRINTF("%02x ", *ptr); ptr++; if(((i+1)%8) == 0) { STM32_ETH_PRINTF(" "); } if(((i+1)%16) == 0) { STM32_ETH_PRINTF("\r\n"); } } STM32_ETH_PRINTF("\r\ndump done!\r\n"); } #endif } } /* Set Own bit of the Rx descriptor Status: gives the buffer back to ETHERNET DMA */ DMARxDescToGet->Status = ETH_DMARxDesc_OWN; /* When Rx Buffer unavailable flag is set: clear it and resume reception */ if ((ETH->DMASR & ETH_DMASR_RBUS) != (uint32_t)RESET) { /* Clear RBUS ETHERNET DMA flag */ ETH->DMASR = ETH_DMASR_RBUS; /* Resume DMA reception */ ETH->DMARPDR = 0; } /* Update the ETHERNET DMA global Rx descriptor with next Rx decriptor */ /* Chained Mode */ if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RCH) != (uint32_t)RESET) { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr); } else /* Ring Mode */ { if((DMARxDescToGet->ControlBufferSize & ETH_DMARxDesc_RER) != (uint32_t)RESET) { /* Selects the first DMA Rx descriptor for next buffer to read: last Rx descriptor was used */ DMARxDescToGet = (ETH_DMADESCTypeDef*) (ETH->DMARDLAR); } else { /* Selects the next DMA Rx descriptor list for next buffer to read */ DMARxDescToGet = (ETH_DMADESCTypeDef*) ((uint32_t)DMARxDescToGet + 0x10 + ((ETH->DMABMR & ETH_DMABMR_DSL) >> 2)); } } return p; } static void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Enable the Ethernet global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); } /* * GPIO Configuration for ETH */ static void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; /* Enable SYSCFG clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOC, ENABLE); GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; /* config MDIO and MDC. */ GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_ETH); /* config ETH_MDIO */ GPIO_PinAFConfig(GPIOC, GPIO_PinSource1, GPIO_AF_ETH); /* config ETH_MDC */ /* config PA2: MDIO */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_Init(GPIOA, &GPIO_InitStructure); /* config PC1: MDC */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; GPIO_Init(GPIOC, &GPIO_InitStructure); /* Ethernet pins configuration ************************************************/ #if defined(MII_MODE) /* ETH_MDIO ------------> PA2 ETH_MDC -------------> PC1 ETH_MII_CRS ---------> PA0 ETH_MII_COL ---------> PA3 ETH_MII_RX_CLK ------> PA1 ETH_MII_RX_ER -------> PB10 ETH_MII_RX_ER -------> PI10 ETH_MII_RX_DV -------> PA7 ETH_MII_RXD0 --------> PC4 ETH_MII_RXD1 --------> PC5 ETH_MII_RXD2 --------> PB0 ETH_MII_RXD3 --------> PB1 ETH_MII_TX_EN -------> PB11 ETH_MII_TX_EN -------> PG11 ETH_MII_TX_CLK ------> PC3 ETH_MII_TXD0 --------> PB12 ETH_MII_TXD0 --------> PG13 ETH_MII_TXD1 --------> PB13 ETH_MII_TXD1 --------> PG14 ETH_MII_TXD2 --------> PC2 ETH_MII_TXD3 --------> PB8 ETH_MII_TXD3 -------> PE2 */ #error insert MII GPIO initial. #elif defined(RMII_MODE) /* ETH_MDIO ------------> PA2 ETH_MDC -------------> PC1 ETH_RMII_REF_CLK ----> PA1 ETH_RMII_CRS_DV -----> PA7 ETH_RMII_RXD0 -------> PC4 ETH_RMII_RXD1 -------> PC5 ETH_RMII_TX_EN ------> PG11 ETH_RMII_TXD0 -------> PG13 ETH_RMII_TXD1 -------> PG14 ETH_RMII_TX_EN ------> PB11 ETH_RMII_TXD0 -------> PB12 ETH_RMII_TXD1 -------> PB13 */ GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_ETH); /* RMII_REF_CLK */ GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_ETH); /* RMII_CRS_DV */ /* configure PA1:RMII_REF_CLK, PA7:RMII_CRS_DV. */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_7; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_PinAFConfig(GPIOC, GPIO_PinSource4, GPIO_AF_ETH); /* RMII_RXD0 */ GPIO_PinAFConfig(GPIOC, GPIO_PinSource5, GPIO_AF_ETH); /* RMII_RXD1 */ /* configure PC4:RMII_RXD0, PC5:RMII_RXD1. */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5; GPIO_Init(GPIOC, &GPIO_InitStructure); # if RMII_TX_GPIO_GROUP == 1 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE); GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_ETH); /* RMII_TX_EN */ GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_ETH); /* RMII_TXD0 */ GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_ETH); /* RMII_TXD1 */ /* configure PB11:RMII_TX_EN, PB12:RMII_TXD0, PB13:RMII_TXD1 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13; GPIO_Init(GPIOB, &GPIO_InitStructure); # elif RMII_TX_GPIO_GROUP == 2 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE); GPIO_PinAFConfig(GPIOG, GPIO_PinSource11, GPIO_AF_ETH); /* RMII_TX_EN */ GPIO_PinAFConfig(GPIOG, GPIO_PinSource13, GPIO_AF_ETH); /* RMII_TXD0 */ GPIO_PinAFConfig(GPIOG, GPIO_PinSource14, GPIO_AF_ETH); /* RMII_TXD1 */ /* configure PG11:RMII_TX_EN, PG13:RMII_TXD0, PG14:RMII_TXD1 */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_13 | GPIO_Pin_14; GPIO_Init(GPIOG, &GPIO_InitStructure); # else # error RMII_TX_GPIO_GROUP setting error! # endif /*RMII_TX_GPIO_GROUP */ #endif /* RMII_MODE */ } /* PHY: LAN8720 */ static uint8_t phy_speed = 0; #define PHY_LINK_MASK (1<<0) #define PHY_100M_MASK (1<<1) #define PHY_DUPLEX_MASK (1<<2) static void phy_monitor_thread_entry(void *parameter) { uint8_t phy_addr = 0xFF; uint8_t phy_speed_new = 0; /* phy search */ { rt_uint32_t i; rt_uint16_t temp; for(i=0; i<=0x1F; i++) { temp = ETH_ReadPHYRegister(i, 0x02); if( temp != 0xFFFF ) { phy_addr = i; break; } } } /* phy search */ if(phy_addr == 0xFF) { STM32_ETH_PRINTF("phy not probe!\r\n"); return; } else { STM32_ETH_PRINTF("found a phy, address:0x%02X\r\n", phy_addr); } /* RESET PHY */ STM32_ETH_PRINTF("RESET PHY!\r\n"); ETH_WritePHYRegister(phy_addr, PHY_BCR, PHY_Reset); rt_thread_delay(RT_TICK_PER_SECOND * 2); ETH_WritePHYRegister(phy_addr, PHY_BCR, PHY_AutoNegotiation); while(1) { uint16_t status = ETH_ReadPHYRegister(phy_addr, PHY_BSR); STM32_ETH_PRINTF("LAN8720 status:0x%04X\r\n", status); phy_speed_new = 0; if(status & (PHY_AutoNego_Complete | PHY_Linked_Status)) { uint16_t SR; SR = ETH_ReadPHYRegister(phy_addr, 31); STM32_ETH_PRINTF("LAN8720 REG 31:0x%04X\r\n", SR); SR = (SR >> 2) & 0x07; /* LAN8720, REG31[4:2], Speed Indication. */ phy_speed_new = PHY_LINK_MASK; if((SR & 0x03) == 2) { phy_speed_new |= PHY_100M_MASK; } if(SR & 0x04) { phy_speed_new |= PHY_DUPLEX_MASK; } } /* linkchange */ if(phy_speed_new != phy_speed) { if(phy_speed_new & PHY_LINK_MASK) { STM32_ETH_PRINTF("link up "); if(phy_speed_new & PHY_100M_MASK) { STM32_ETH_PRINTF("100Mbps"); stm32_eth_device.ETH_Speed = ETH_Speed_100M; } else { stm32_eth_device.ETH_Speed = ETH_Speed_10M; STM32_ETH_PRINTF("10Mbps"); } if(phy_speed_new & PHY_DUPLEX_MASK) { STM32_ETH_PRINTF(" full-duplex\r\n"); stm32_eth_device.ETH_Mode = ETH_Mode_FullDuplex; } else { STM32_ETH_PRINTF(" half-duplex\r\n"); stm32_eth_device.ETH_Mode = ETH_Mode_HalfDuplex; } rt_stm32_eth_init((rt_device_t)&stm32_eth_device); /* send link up. */ eth_device_linkchange(&stm32_eth_device.parent, RT_TRUE); } /* link up. */ else { STM32_ETH_PRINTF("link down\r\n"); /* send link down. */ eth_device_linkchange(&stm32_eth_device.parent, RT_FALSE); } /* link down. */ phy_speed = phy_speed_new; } /* linkchange */ rt_thread_delay(RT_TICK_PER_SECOND); } /* while(1) */ } void rt_hw_stm32_eth_init(void) { /* PHY RESET: PC0 */ { GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_ResetBits(GPIOC, GPIO_Pin_0); rt_thread_delay(2); GPIO_SetBits(GPIOC, GPIO_Pin_0); rt_thread_delay(2); } GPIO_Configuration(); NVIC_Configuration(); stm32_eth_device.ETH_Speed = ETH_Speed_100M; stm32_eth_device.ETH_Mode = ETH_Mode_FullDuplex; /* OUI 00-80-E1 STMICROELECTRONICS. */ stm32_eth_device.dev_addr[0] = 0x00; stm32_eth_device.dev_addr[1] = 0x80; stm32_eth_device.dev_addr[2] = 0xE1; /* generate MAC addr from 96bit unique ID (only for test). */ stm32_eth_device.dev_addr[3] = *(rt_uint8_t*)(0x1FFF7A10+4); stm32_eth_device.dev_addr[4] = *(rt_uint8_t*)(0x1FFF7A10+2); stm32_eth_device.dev_addr[5] = *(rt_uint8_t*)(0x1FFF7A10+0); stm32_eth_device.parent.parent.init = rt_stm32_eth_init; stm32_eth_device.parent.parent.open = rt_stm32_eth_open; stm32_eth_device.parent.parent.close = rt_stm32_eth_close; stm32_eth_device.parent.parent.read = rt_stm32_eth_read; stm32_eth_device.parent.parent.write = rt_stm32_eth_write; stm32_eth_device.parent.parent.control = rt_stm32_eth_control; stm32_eth_device.parent.parent.user_data = RT_NULL; stm32_eth_device.parent.eth_rx = rt_stm32_eth_rx; stm32_eth_device.parent.eth_tx = rt_stm32_eth_tx; /* init tx semaphore */ rt_sem_init(&tx_wait, "tx_wait", 0, RT_IPC_FLAG_FIFO); /* register eth device */ eth_device_init(&(stm32_eth_device.parent), "e0"); /* start phy monitor */ { rt_thread_t tid; tid = rt_thread_create("phy", phy_monitor_thread_entry, RT_NULL, 512, RT_THREAD_PRIORITY_MAX - 2, 2); if (tid != RT_NULL) rt_thread_startup(tid); } }