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ccbd63868e3579b4439f9b492a5dfc0e42ae6731
checker_slave/source/eth/stm32f4x7_eth.c
andy 077c27f2bb 仓库迁移
2023-06-10 11:52:00 +08:00

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/**
******************************************************************************
* @file stm32f4x7_eth.c
* @author MCD Application Team
* @version V1.1.0
* @date 31-July-2013
* @brief This file is the low level driver for STM32F4x7xx Ethernet Controller.
* This driver does not include low level functions for PTP time-stamp.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4x7_eth.h"
#include "stm32f4xx_rcc.h"
#include <string.h>
/** @addtogroup STM32F4x7_ETH_Driver
* @brief ETH driver modules
* @{
*/
/** @defgroup ETH_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @defgroup ETH_Private_Defines
* @{
*/
/**
* @}
*/
/** @defgroup ETH_Private_Macros
* @{
*/
/**
* @}
*/
/** @defgroup ETH_Private_Variables
* @{
*/
#if defined (__CC_ARM) /*!< ARM Compiler */
__align(4)
ETH_DMADESCTypeDef DMARxDscrTab[ETH_RXBUFNB];/* Ethernet Rx MA Descriptor */
__align(4)
ETH_DMADESCTypeDef DMATxDscrTab[ETH_TXBUFNB];/* Ethernet Tx DMA Descriptor */
__align(4)
uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE]; /* Ethernet Receive Buffer */
__align(4)
uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE]; /* Ethernet Transmit Buffer */
#elif defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma data_alignment=4
ETH_DMADESCTypeDef DMARxDscrTab[ETH_RXBUFNB];/* Ethernet Rx MA Descriptor */
#pragma data_alignment=4
ETH_DMADESCTypeDef DMATxDscrTab[ETH_TXBUFNB];/* Ethernet Tx DMA Descriptor */
#pragma data_alignment=4
uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE]; /* Ethernet Receive Buffer */
#pragma data_alignment=4
uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE]; /* Ethernet Transmit Buffer */
#elif defined (__GNUC__) /*!< GNU Compiler */
ETH_DMADESCTypeDef DMARxDscrTab[ETH_RXBUFNB] __attribute__ ((aligned (4))); /* Ethernet Rx DMA Descriptor */
ETH_DMADESCTypeDef DMATxDscrTab[ETH_TXBUFNB] __attribute__ ((aligned (4))); /* Ethernet Tx DMA Descriptor */
uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __attribute__ ((aligned (4))); /* Ethernet Receive Buffer */
uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __attribute__ ((aligned (4))); /* Ethernet Transmit Buffer */
#elif defined (__TASKING__) /*!< TASKING Compiler */
__align(4)
ETH_DMADESCTypeDef DMARxDscrTab[ETH_RXBUFNB];/* Ethernet Rx MA Descriptor */
__align(4)
ETH_DMADESCTypeDef DMATxDscrTab[ETH_TXBUFNB];/* Ethernet Tx DMA Descriptor */
__align(4)
uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE]; /* Ethernet Receive Buffer */
__align(4)
uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE]; /* Ethernet Transmit Buffer */
#endif /* __CC_ARM */
/* Global pointers on Tx and Rx descriptor used to track transmit and receive descriptors */
__IO ETH_DMADESCTypeDef *DMATxDescToSet;
__IO ETH_DMADESCTypeDef *DMARxDescToGet;
/* Structure used to hold the last received packet descriptors info */
ETH_DMA_Rx_Frame_infos RX_Frame_Descriptor;
__IO ETH_DMA_Rx_Frame_infos *DMA_RX_FRAME_infos;
__IO uint32_t Frame_Rx_index;
/**
* @}
*/
/** @defgroup ETH_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @defgroup ETH_Private_Functions
* @{
*/
#ifndef USE_Delay
/**
* @brief Inserts a delay time.
* @param nCount: specifies the delay time length.
* @retval None
*/
static void ETH_Delay(__IO uint32_t nCount)
{
__IO uint32_t index = 0;
for(index = nCount; index != 0; index--)
{
}
}
#endif /* USE_Delay*/
/******************************************************************************/
/* Global ETH MAC/DMA functions */
/******************************************************************************/
/**
* @brief De-initializes 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 Fills each ETH_InitStruct member with its default value.
* @param ETH_InitStruct: pointer to a ETH_InitTypeDef structure which will be initialized.
* @retval None
*/
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 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, uint16_t PHYAddress)
{
uint32_t RegValue = 0, tmpreg = 0;
__IO uint32_t i = 0;
RCC_ClocksTypeDef rcc_clocks;
uint32_t hclk = 60000000;
__IO uint32_t timeout = 0, err = ETH_SUCCESS;
/* 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_PROMISCUOUS_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;
/*-------------------- PHY initialization and configuration ----------------*/
/* Put the PHY in reset mode */
if(!(ETH_WritePHYRegister(PHYAddress, PHY_BCR, PHY_Reset)))
{
/* Return ERROR in case of write timeout */
err = ETH_ERROR;
goto error;
}
/* Delay to assure PHY reset */
_eth_delay_(PHY_RESET_DELAY);
if(ETH_InitStruct->ETH_AutoNegotiation != ETH_AutoNegotiation_Disable)
{
/* We wait for linked status...*/
do
{
timeout++;
} while (!(ETH_ReadPHYRegister(PHYAddress, PHY_BSR) & PHY_Linked_Status) && (timeout < PHY_READ_TO));
/* Return ERROR in case of timeout */
if(timeout == PHY_READ_TO)
{
err = ETH_ERROR;
goto error;
}
/* Reset Timeout counter */
timeout = 0;
/* Enable Auto-Negotiation */
if(!(ETH_WritePHYRegister(PHYAddress, PHY_BCR, PHY_AutoNegotiation)))
{
/* Return ERROR in case of write timeout */
err = ETH_ERROR;
}
/* Wait until the auto-negotiation will be completed */
do
{
timeout++;
} while (!(ETH_ReadPHYRegister(PHYAddress, PHY_BSR) & PHY_AutoNego_Complete) && (timeout < (uint32_t)PHY_READ_TO));
/* Return ERROR in case of timeout */
if(timeout == PHY_READ_TO)
{
err = ETH_ERROR;
goto error;
}
/* Reset Timeout counter */
timeout = 0;
/* Read the result of the auto-negotiation */
RegValue = ETH_ReadPHYRegister(PHYAddress, PHY_SR);
/* Configure the MAC with the Duplex Mode fixed by the auto-negotiation process */
if((RegValue & PHY_DUPLEX_STATUS) != (uint32_t)RESET)
{
/* Set Ethernet duplex mode to Full-duplex following the auto-negotiation */
ETH_InitStruct->ETH_Mode = ETH_Mode_FullDuplex;
}
else
{
/* Set Ethernet duplex mode to Half-duplex following the auto-negotiation */
ETH_InitStruct->ETH_Mode = ETH_Mode_HalfDuplex;
}
/* Configure the MAC with the speed fixed by the auto-negotiation process */
if(RegValue & PHY_SPEED_STATUS)
{
/* Set Ethernet speed to 10M following the auto-negotiation */
ETH_InitStruct->ETH_Speed = ETH_Speed_10M;
}
else
{
/* Set Ethernet speed to 100M following the auto-negotiation */
ETH_InitStruct->ETH_Speed = ETH_Speed_100M;
}
}
else
{
if(!ETH_WritePHYRegister(PHYAddress, PHY_BCR, ((uint16_t)(ETH_InitStruct->ETH_Mode >> 3) |
(uint16_t)(ETH_InitStruct->ETH_Speed >> 1))))
{
/* Return ERROR in case of write timeout */
err = ETH_ERROR;
}
/* Delay to assure PHY configuration */
_eth_delay_(PHY_CONFIG_DELAY);
}
error:
if (err == ETH_ERROR) /* Auto-negotiation failed */
{
/* Set Ethernet duplex mode to Full-duplex */
ETH_InitStruct->ETH_Mode = ETH_Mode_FullDuplex;
/* Set Ethernet speed to 100M */
ETH_InitStruct->ETH_Speed = ETH_Speed_100M;
}
/*------------------------ 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;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACCR = 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);
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACFFR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACFFR = tmpreg;
/*--------------- 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;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACFCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACFCR = 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);
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACVLANTR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACVLANTR = tmpreg;
/*-------------------------------- 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;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->DMAOMR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->DMAOMR = 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 */
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->DMABMR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->DMABMR = tmpreg;
#ifdef USE_ENHANCED_DMA_DESCRIPTORS
/* Enable the Enhanced DMA descriptors */
ETH->DMABMR |= ETH_DMABMR_EDE;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->DMABMR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->DMABMR = tmpreg;
#endif /* USE_ENHANCED_DMA_DESCRIPTORS */
/* Return Ethernet configuration success */
if(err == ETH_SUCCESS)
{
/* Return Ethernet configuration success */
return ETH_SUCCESS;
}
else /* Auto-negotiation failed */
{
/* Return Ethernet error */
return ETH_ERROR;
}
}
/**
* @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);
/* Enable receive state machine of the MAC for reception from the MII */
ETH_MACReceptionCmd(ENABLE);
/* Flush Transmit FIFO */
ETH_FlushTransmitFIFO();
/* Start DMA transmission */
ETH_DMATransmissionCmd(ENABLE);
/* Start DMA reception */
ETH_DMAReceptionCmd(ENABLE);
}
/**
* @brief Disables ENET MAC and DMA reception/transmission
* @param None
* @retval None
*/
void ETH_Stop(void)
{
/* Stop DMA transmission */
ETH_DMATransmissionCmd(DISABLE);
/* Stop DMA reception */
ETH_DMAReceptionCmd(DISABLE);
/* Disable receive state machine of the MAC for reception from the MII */
ETH_MACReceptionCmd(DISABLE);
/* Flush Transmit FIFO */
ETH_FlushTransmitFIFO();
/* Disable transmit state machine of the MAC for transmission on the MII */
ETH_MACTransmissionCmd(DISABLE);
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACCR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACCR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* When Set In full duplex MAC initiates pause control frame */
ETH->MACFCR |= ETH_MACFCR_FCBBPA;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACFCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACFCR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACFCR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACFCR = tmpreg;
}
/**
* @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 address 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 selected MAC address high register */
tmpreg = ((uint32_t)Addr[5] << 8) | (uint32_t)Addr[4];
/* Load the selected MAC address high register */
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg;
/* Calculate the selected MAC address low register */
tmpreg = ((uint32_t)Addr[3] << 24) | ((uint32_t)Addr[2] << 16) | ((uint32_t)Addr[1] << 8) | Addr[0];
/* Load the selected MAC address low register */
(*(__IO uint32_t *) (ETH_MAC_ADDR_LBASE + MacAddr)) = tmpreg;
}
/**
* @brief Get the selected MAC address.
* @param MacAddr: The MAC address 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 selected MAC address high register */
tmpreg =(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr));
/* Calculate the selected MAC address buffer */
Addr[5] = ((tmpreg >> 8) & (uint8_t)0xFF);
Addr[4] = (tmpreg & (uint8_t)0xFF);
/* Load the selected MAC address low register */
tmpreg =(*(__IO uint32_t *) (ETH_MAC_ADDR_LBASE + MacAddr));
/* Calculate the selected 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 perfect 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)
{
__IO uint32_t tmpreg = 0;
/* 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);
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr));
_eth_delay_(ETH_REG_WRITE_DELAY);
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg;
}
/**
* @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 comparison
* 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)
{
__IO uint32_t tmpreg = 0;
/* 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);
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr));
_eth_delay_(ETH_REG_WRITE_DELAY);
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg;
}
/**
* @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 comparison
* 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)
{
__IO uint32_t tmpreg = 0;
/* 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);
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr));
_eth_delay_(ETH_REG_WRITE_DELAY);
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg;
/* Set the selected Filter mask bytes */
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) |= MaskByte;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = (*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr));
_eth_delay_(ETH_REG_WRITE_DELAY);
(*(__IO uint32_t *) (ETH_MAC_ADDR_HBASE + MacAddr)) = tmpreg;
}
/******************************************************************************/
/* DMA Descriptors functions */
/******************************************************************************/
/**
* @brief This function should be called to get the received frame (to be used
* with polling method only).
* @param none
* @retval Structure of type FrameTypeDef
*/
FrameTypeDef ETH_Get_Received_Frame(void)
{
uint32_t framelength = 0;
FrameTypeDef frame = {0,0,0};
/* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */
framelength = ((DMARxDescToGet->Status & ETH_DMARxDesc_FL) >> ETH_DMARxDesc_FrameLengthShift) - 4;
frame.length = framelength;
/* Get the address of the first frame descriptor and the buffer start address */
frame.descriptor = DMA_RX_FRAME_infos->FS_Rx_Desc;
frame.buffer =(DMA_RX_FRAME_infos->FS_Rx_Desc)->Buffer1Addr;
/* Update the ETHERNET DMA global Rx descriptor with next Rx descriptor */
/* Chained Mode */
/* Selects the next DMA Rx descriptor list for next buffer to read */
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
/* Return Frame */
return (frame);
}
/**
* @brief This function should be called when a frame is received using DMA
* Receive interrupt, it allows scanning of Rx descriptors to get the
* the receive frame (should be used with interrupt mode only)
* @param None
* @retval Structure of type FrameTypeDef
*/
FrameTypeDef ETH_Get_Received_Frame_interrupt(void)
{
FrameTypeDef frame={0,0,0};
__IO uint32_t descriptor_scan_counter = 0;
/* scan descriptors owned by CPU */
while (((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET)&&
(descriptor_scan_counter<ETH_RXBUFNB))
{
/* Just by security */
descriptor_scan_counter++;
/* check if first segment in frame */
if(((DMARxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)&&
((DMARxDescToGet->Status & ETH_DMARxDesc_LS) == (uint32_t)RESET))
{
DMA_RX_FRAME_infos->FS_Rx_Desc = DMARxDescToGet;
DMA_RX_FRAME_infos->Seg_Count = 1;
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
}
/* check if intermediate segment */
else if (((DMARxDescToGet->Status & ETH_DMARxDesc_LS) == (uint32_t)RESET)&&
((DMARxDescToGet->Status & ETH_DMARxDesc_FS) == (uint32_t)RESET))
{
(DMA_RX_FRAME_infos->Seg_Count) ++;
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
}
/* should be last segment */
else
{
/* last segment */
DMA_RX_FRAME_infos->LS_Rx_Desc = DMARxDescToGet;
(DMA_RX_FRAME_infos->Seg_Count)++;
/* first segment is last segment */
if ((DMA_RX_FRAME_infos->Seg_Count)==1)
DMA_RX_FRAME_infos->FS_Rx_Desc = DMARxDescToGet;
/* Get the Frame Length of the received packet: substruct 4 bytes of the CRC */
frame.length = ((DMARxDescToGet->Status & ETH_DMARxDesc_FL) >> ETH_DMARxDesc_FrameLengthShift) - 4;
/* Get the address of the buffer start address */
/* Check if more than one segment in the frame */
if (DMA_RX_FRAME_infos->Seg_Count >1)
{
frame.buffer =(DMA_RX_FRAME_infos->FS_Rx_Desc)->Buffer1Addr;
}
else
{
frame.buffer = DMARxDescToGet->Buffer1Addr;
}
frame.descriptor = DMA_RX_FRAME_infos->FS_Rx_Desc;
/* Update the ETHERNET DMA global Rx descriptor with next Rx descriptor */
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
/* Return Frame */
return (frame);
}
}
return (frame);
}
/**
* @brief Prepares DMA Tx descriptors to transmit an ethernet frame
* @param FrameLength : length of the frame to send
* @retval error status
*/
uint32_t ETH_Prepare_Transmit_Descriptors(u16 FrameLength)
{
uint32_t buf_count =0, size=0,i=0;
__IO ETH_DMADESCTypeDef *DMATxDesc;
/* Check if the descriptor is owned by the ETHERNET DMA (when set) or CPU (when reset) */
if((DMATxDescToSet->Status & ETH_DMATxDesc_OWN) != (u32)RESET)
{
/* Return ERROR: OWN bit set */
return ETH_ERROR;
}
DMATxDesc = DMATxDescToSet;
if (FrameLength > ETH_TX_BUF_SIZE)
{
buf_count = FrameLength/ETH_TX_BUF_SIZE;
if (FrameLength%ETH_TX_BUF_SIZE) buf_count++;
}
else buf_count =1;
if (buf_count ==1)
{
/*set LAST and FIRST segment */
DMATxDesc->Status |=ETH_DMATxDesc_FS|ETH_DMATxDesc_LS;
/* Set frame size */
DMATxDesc->ControlBufferSize = (FrameLength & ETH_DMATxDesc_TBS1);
/* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */
DMATxDesc->Status |= ETH_DMATxDesc_OWN;
DMATxDesc= (ETH_DMADESCTypeDef *)(DMATxDesc->Buffer2NextDescAddr);
}
else
{
for (i=0; i< buf_count; i++)
{
/* Clear FIRST and LAST segment bits */
DMATxDesc->Status &= ~(ETH_DMATxDesc_FS | ETH_DMATxDesc_LS);
if (i==0)
{
/* Setting the first segment bit */
DMATxDesc->Status |= ETH_DMATxDesc_FS;
}
/* Program size */
DMATxDesc->ControlBufferSize = (ETH_TX_BUF_SIZE & ETH_DMATxDesc_TBS1);
if (i== (buf_count-1))
{
/* Setting the last segment bit */
DMATxDesc->Status |= ETH_DMATxDesc_LS;
size = FrameLength - (buf_count-1)*ETH_TX_BUF_SIZE;
DMATxDesc->ControlBufferSize = (size & ETH_DMATxDesc_TBS1);
}
/* Set Own bit of the Tx descriptor Status: gives the buffer back to ETHERNET DMA */
DMATxDesc->Status |= ETH_DMATxDesc_OWN;
DMATxDesc = (ETH_DMADESCTypeDef *)(DMATxDesc->Buffer2NextDescAddr);
}
}
DMATxDescToSet = DMATxDesc;
/* When Tx Buffer unavailable flag is set: clear it and resume transmission */
if ((ETH->DMASR & ETH_DMASR_TBUS) != (u32)RESET)
{
/* Clear TBUS ETHERNET DMA flag */
ETH->DMASR = ETH_DMASR_TBUS;
/* Resume DMA transmission*/
ETH->DMATPDR = 0;
}
/* Return SUCCESS */
return ETH_SUCCESS;
}
/**
* @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_RX_BUF_SIZE;
/* Set Buffer1 address pointer */
DMARxDesc->Buffer1Addr = (uint32_t)(&RxBuff[i*ETH_RX_BUF_SIZE]);
/* Initialize the next descriptor with the Next Descriptor 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 Descriptor List Address Register */
ETH->DMARDLAR = (uint32_t) DMARxDescTab;
DMA_RX_FRAME_infos = &RX_Frame_Descriptor;
}
/**
* @brief This function polls for a frame reception
* @param None
* @retval Returns 1 when a frame is received, 0 if none.
*/
uint32_t ETH_CheckFrameReceived(void)
{
/* check if last segment */
if(((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET) &&
((DMARxDescToGet->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET))
{
DMA_RX_FRAME_infos->Seg_Count++;
if (DMA_RX_FRAME_infos->Seg_Count == 1)
{
DMA_RX_FRAME_infos->FS_Rx_Desc = DMARxDescToGet;
}
DMA_RX_FRAME_infos->LS_Rx_Desc = DMARxDescToGet;
return 1;
}
/* check if first segment */
else if(((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET) &&
((DMARxDescToGet->Status & ETH_DMARxDesc_FS) != (uint32_t)RESET)&&
((DMARxDescToGet->Status & ETH_DMARxDesc_LS) == (uint32_t)RESET))
{
DMA_RX_FRAME_infos->FS_Rx_Desc = DMARxDescToGet;
DMA_RX_FRAME_infos->LS_Rx_Desc = NULL;
DMA_RX_FRAME_infos->Seg_Count = 1;
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
}
/* check if intermediate segment */
else if(((DMARxDescToGet->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET) &&
((DMARxDescToGet->Status & ETH_DMARxDesc_FS) == (uint32_t)RESET)&&
((DMARxDescToGet->Status & ETH_DMARxDesc_LS) == (uint32_t)RESET))
{
(DMA_RX_FRAME_infos->Seg_Count) ++;
DMARxDescToGet = (ETH_DMADESCTypeDef*) (DMARxDescToGet->Buffer2NextDescAddr);
}
return 0;
}
/**
* @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_TX_BUF_SIZE]);
/* Initialize the next descriptor with the Next Descriptor 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 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 completion
* @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 transmission
* @arg ETH_DMATxDesc_NC : No Carrier: no carrier signal from the transceiver
* @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 configure Tx descriptor as last or first segment
* @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 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 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 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: Descriptor 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 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);
}
}
/**
* @brief Get the size of the received packet.
* @param None
* @retval framelength: received packet size
*/
uint32_t ETH_GetRxPktSize(ETH_DMADESCTypeDef *DMARxDesc)
{
uint32_t frameLength = 0;
if(((DMARxDesc->Status & ETH_DMARxDesc_OWN) == (uint32_t)RESET) &&
((DMARxDesc->Status & ETH_DMARxDesc_ES) == (uint32_t)RESET) &&
((DMARxDesc->Status & ETH_DMARxDesc_LS) != (uint32_t)RESET))
{
/* Get the size of the packet: including 4 bytes of the CRC */
frameLength = ETH_GetDMARxDescFrameLength(DMARxDesc);
}
/* Return Frame Length */
return frameLength;
}
#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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->DMABMR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->DMABMR = tmpreg;
}
#endif /* USE_ENHANCED_DMA_DESCRIPTORS */
/******************************************************************************/
/* DMA functions */
/******************************************************************************/
/**
* @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<45>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 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 interrupt has occurred 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<45>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 : Running - reading the data from host memory
* - ETH_DMA_TransmitProcess_Suspended : Suspended - Tx Descriptor unavailable
* - 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 Descriptor unavailable
* - ETH_DMA_ReceiveProcess_Closing : Running - closing descriptor
* - ETH_DMA_ReceiveProcess_Queuing : Running - queuing the receive 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)
{
__IO uint32_t tmpreg = 0;
/* Set the Flush Transmit FIFO bit */
ETH->DMAOMR |= ETH_DMAOMR_FTF;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->DMAOMR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->DMAOMR = tmpreg;
}
/**
* @brief Checks whether the ETHERNET flush 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 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 Overflows Counter
* @arg ETH_DMA_Overflow_MissedFrameCounter : Overflow for Buffer Unavailable 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 transmit descriptor data 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 receive descriptor data 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;
}
/******************************************************************************/
/* PHY functions */
/******************************************************************************/
/**
* @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: Transceiver Basic Control Register
* @arg PHY_BSR: Transceiver Basic Status Register
* @arg PHY_SR : Transceiver 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 : Transceiver 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.
* @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;
}
}
/******************************************************************************/
/* Power Management(PMT) functions */
/******************************************************************************/
/**
* @brief Reset Wakeup frame filter register pointer.
* @param None
* @retval None
*/
void ETH_ResetWakeUpFrameFilterRegisterPointer(void)
{
__IO uint32_t tmpreg = 0;
/* Resets the Remote Wake-up Frame Filter register pointer to 0x0000 */
ETH->MACPMTCSR |= ETH_MACPMTCSR_WFFRPR;
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACPMTCSR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACPMTCSR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
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];
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACRWUFFR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACRWUFFR = tmpreg;
}
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACPMTCSR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACPMTCSR = tmpreg;
}
/**
* @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 Pointer 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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACPMTCSR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACPMTCSR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACPMTCSR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACPMTCSR = tmpreg;
}
/**
* @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)
{
__IO uint32_t tmpreg = 0;
/* 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;
}
/* Wait until the write operation will be taken into account :
at least four TX_CLK/RX_CLK clock cycles */
tmpreg = ETH->MACPMTCSR;
_eth_delay_(ETH_REG_WRITE_DELAY);
ETH->MACPMTCSR = tmpreg;
}
/******************************************************************************/
/* MMC functions */
/******************************************************************************/
/**
* @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 occurred */
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 occurred */
if ((((ETH->MMCTIR & ETH_MMC_IT) != (uint32_t)RESET)) && ((ETH->MMCRIMR & 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));
}
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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