sam7x_eth_driver.h File Reference

AT91SAM7X Ethernet MAC controller. More...

Go to the source code of this file.

Data Structures

struct  Sam7xTxBufferDesc
 Transmit buffer descriptor. More...
struct  Sam7xRxBufferDesc
 Receive buffer descriptor. More...


#define SAM7X_ETH_TX_BUFFER_SIZE   1536
#define SAM7X_ETH_RX_BUFFER_SIZE   128
#define AT91C_EMAC_SOF_01   (1 << 30)
#define AT91C_EMAC_RW_01   (1 << 28)
#define AT91C_EMAC_RW_10   (2 << 28)
#define AT91C_EMAC_CODE_10   (2 << 16)
#define AT91C_EMAC_TX_USED   0x80000000
#define AT91C_EMAC_TX_WRAP   0x40000000
#define AT91C_EMAC_TX_ERROR   0x20000000
#define AT91C_EMAC_TX_UNDERRUN   0x10000000
#define AT91C_EMAC_TX_EXHAUSTED   0x08000000
#define AT91C_EMAC_TX_NO_CRC   0x00010000
#define AT91C_EMAC_TX_LAST   0x00008000
#define AT91C_EMAC_TX_LENGTH   0x000007FF
#define AT91C_EMAC_RX_WRAP   0x00000002
#define AT91C_EMAC_RX_OWNERSHIP   0x00000001
#define AT91C_EMAC_RX_BROADCAST   0x80000000
#define AT91C_EMAC_RX_MULTICAST_HASH   0x40000000
#define AT91C_EMAC_RX_UNICAST_HASH   0x20000000
#define AT91C_EMAC_RX_EXT_ADDR   0x10000000
#define AT91C_EMAC_RX_SAR1   0x04000000
#define AT91C_EMAC_RX_SAR2   0x02000000
#define AT91C_EMAC_RX_SAR3   0x01000000
#define AT91C_EMAC_RX_SAR4   0x00800000
#define AT91C_EMAC_RX_TYPE_ID   0x00400000
#define AT91C_EMAC_RX_VLAN_TAG   0x00200000
#define AT91C_EMAC_RX_PRIORITY_TAG   0x00100000
#define AT91C_EMAC_RX_VLAN_PRIORITY   0x000E0000
#define AT91C_EMAC_RX_CFI   0x00010000
#define AT91C_EMAC_RX_EOF   0x00008000
#define AT91C_EMAC_RX_SOF   0x00004000
#define AT91C_EMAC_RX_OFFSET   0x00003000
#define AT91C_EMAC_RX_LENGTH   0x00000FFF


error_t sam7xEthInit (NetInterface *interface)
 SAM7X Ethernet MAC initialization. More...
void sam7xEthInitGpio (NetInterface *interface)
void sam7xEthInitBufferDesc (NetInterface *interface)
 Initialize buffer descriptors. More...
void sam7xEthTick (NetInterface *interface)
 SAM7X Ethernet MAC timer handler. More...
void sam7xEthEnableIrq (NetInterface *interface)
 Enable interrupts. More...
void sam7xEthDisableIrq (NetInterface *interface)
 Disable interrupts. More...
void sam7xEthIrqHandler (void)
 SAM7X Ethernet MAC interrupt service routine. More...
void sam7xEthEventHandler (NetInterface *interface)
 SAM7X Ethernet MAC event handler. More...
error_t sam7xEthSendPacket (NetInterface *interface, const NetBuffer *buffer, size_t offset)
 Send a packet. More...
error_t sam7xEthReceivePacket (NetInterface *interface)
 Receive a packet. More...
error_t sam7xEthUpdateMacAddrFilter (NetInterface *interface)
 Configure MAC address filtering. More...
error_t sam7xEthUpdateMacConfig (NetInterface *interface)
 Adjust MAC configuration parameters for proper operation. More...
void sam7xEthWritePhyReg (uint8_t phyAddr, uint8_t regAddr, uint16_t data)
 Write PHY register. More...
uint16_t sam7xEthReadPhyReg (uint8_t phyAddr, uint8_t regAddr)
 Read PHY register. More...
void emacIrqWrapper (void)


const NicDriver sam7xEthDriver
 SAM7X Ethernet MAC driver. More...

Detailed Description

AT91SAM7X Ethernet MAC controller.


Copyright (C) 2010-2018 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Oryx Embedded SARL (

Definition in file sam7x_eth_driver.h.

Macro Definition Documentation


#define AT91C_EMAC_CODE_10   (2 << 16)

Definition at line 71 of file sam7x_eth_driver.h.


(AT91C_PB17_ERXCK | AT91C_PB16_ECOL | \
AT91C_PB11_ETX3 | AT91C_PB10_ETX2 | AT91C_PB9_EMDIO | AT91C_PB8_EMDC | \
AT91C_PB7_ERXER | AT91C_PB6_ERX1 | AT91C_PB5_ERX0 | AT91C_PB4_ECRS | \

Definition at line 61 of file sam7x_eth_driver.h.

◆ AT91C_EMAC_RW_01

#define AT91C_EMAC_RW_01   (1 << 28)

Definition at line 69 of file sam7x_eth_driver.h.

◆ AT91C_EMAC_RW_10

#define AT91C_EMAC_RW_10   (2 << 28)

Definition at line 70 of file sam7x_eth_driver.h.



Definition at line 84 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_BROADCAST   0x80000000

Definition at line 87 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_CFI   0x00010000

Definition at line 99 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_EOF   0x00008000

Definition at line 100 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_EXT_ADDR   0x10000000

Definition at line 90 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_LENGTH   0x00000FFF

Definition at line 103 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_MULTICAST_HASH   0x40000000

Definition at line 88 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_OFFSET   0x00003000

Definition at line 102 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_OWNERSHIP   0x00000001

Definition at line 86 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_PRIORITY_TAG   0x00100000

Definition at line 97 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_SAR1   0x04000000

Definition at line 91 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_SAR2   0x02000000

Definition at line 92 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_SAR3   0x01000000

Definition at line 93 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_SAR4   0x00800000

Definition at line 94 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_SOF   0x00004000

Definition at line 101 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_TYPE_ID   0x00400000

Definition at line 95 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_UNICAST_HASH   0x20000000

Definition at line 89 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_VLAN_PRIORITY   0x000E0000

Definition at line 98 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_VLAN_TAG   0x00200000

Definition at line 96 of file sam7x_eth_driver.h.


#define AT91C_EMAC_RX_WRAP   0x00000002

Definition at line 85 of file sam7x_eth_driver.h.


#define AT91C_EMAC_SOF_01   (1 << 30)

Definition at line 68 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_ERROR   0x20000000

Definition at line 76 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_EXHAUSTED   0x08000000

Definition at line 78 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_LAST   0x00008000

Definition at line 80 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_LENGTH   0x000007FF

Definition at line 81 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_NO_CRC   0x00010000

Definition at line 79 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_UNDERRUN   0x10000000

Definition at line 77 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_USED   0x80000000

Definition at line 74 of file sam7x_eth_driver.h.


#define AT91C_EMAC_TX_WRAP   0x40000000

Definition at line 75 of file sam7x_eth_driver.h.



Definition at line 48 of file sam7x_eth_driver.h.


#define SAM7X_ETH_RX_BUFFER_SIZE   128

Definition at line 55 of file sam7x_eth_driver.h.



Definition at line 34 of file sam7x_eth_driver.h.


#define SAM7X_ETH_TX_BUFFER_SIZE   1536

Definition at line 41 of file sam7x_eth_driver.h.

Function Documentation

◆ emacIrqWrapper()

void emacIrqWrapper ( void  )

◆ sam7xEthDisableIrq()

void sam7xEthDisableIrq ( NetInterface interface)

Disable interrupts.

[in]interfaceUnderlying network interface

Definition at line 301 of file sam7x_eth_driver.c.

◆ sam7xEthEnableIrq()

void sam7xEthEnableIrq ( NetInterface interface)

Enable interrupts.

[in]interfaceUnderlying network interface

Definition at line 287 of file sam7x_eth_driver.c.

◆ sam7xEthEventHandler()

void sam7xEthEventHandler ( NetInterface interface)

SAM7X Ethernet MAC event handler.

[in]interfaceUnderlying network interface

Definition at line 370 of file sam7x_eth_driver.c.

◆ sam7xEthInit()

error_t sam7xEthInit ( NetInterface interface)

SAM7X Ethernet MAC initialization.

[in]interfaceUnderlying network interface
Error code

Definition at line 113 of file sam7x_eth_driver.c.

◆ sam7xEthInitBufferDesc()

void sam7xEthInitBufferDesc ( NetInterface interface)

Initialize buffer descriptors.

[in]interfaceUnderlying network interface

Definition at line 222 of file sam7x_eth_driver.c.

◆ sam7xEthInitGpio()

void sam7xEthInitGpio ( NetInterface interface)

◆ sam7xEthIrqHandler()

void sam7xEthIrqHandler ( void  )

SAM7X Ethernet MAC interrupt service routine.

Definition at line 314 of file sam7x_eth_driver.c.

◆ sam7xEthReadPhyReg()

uint16_t sam7xEthReadPhyReg ( uint8_t  phyAddr,
uint8_t  regAddr 

Read PHY register.

[in]phyAddrPHY address
[in]regAddrRegister address
Register value

Definition at line 707 of file sam7x_eth_driver.c.

◆ sam7xEthReceivePacket()

error_t sam7xEthReceivePacket ( NetInterface interface)

Receive a packet.

[in]interfaceUnderlying network interface
Error code

Definition at line 469 of file sam7x_eth_driver.c.

◆ sam7xEthSendPacket()

error_t sam7xEthSendPacket ( NetInterface interface,
const NetBuffer buffer,
size_t  offset 

Send a packet.

[in]interfaceUnderlying network interface
[in]bufferMulti-part buffer containing the data to send
[in]offsetOffset to the first data byte
Error code

Definition at line 404 of file sam7x_eth_driver.c.

◆ sam7xEthTick()

void sam7xEthTick ( NetInterface interface)

SAM7X Ethernet MAC timer handler.

This routine is periodically called by the TCP/IP stack to handle periodic operations such as polling the link state

[in]interfaceUnderlying network interface

Definition at line 275 of file sam7x_eth_driver.c.

◆ sam7xEthUpdateMacAddrFilter()

error_t sam7xEthUpdateMacAddrFilter ( NetInterface interface)

Configure MAC address filtering.

[in]interfaceUnderlying network interface
Error code

Definition at line 583 of file sam7x_eth_driver.c.

◆ sam7xEthUpdateMacConfig()

error_t sam7xEthUpdateMacConfig ( NetInterface interface)

Adjust MAC configuration parameters for proper operation.

[in]interfaceUnderlying network interface
Error code

Definition at line 646 of file sam7x_eth_driver.c.

◆ sam7xEthWritePhyReg()

void sam7xEthWritePhyReg ( uint8_t  phyAddr,
uint8_t  regAddr,
uint16_t  data 

Write PHY register.

[in]phyAddrPHY address
[in]regAddrRegister address
[in]dataRegister value

Definition at line 680 of file sam7x_eth_driver.c.

Variable Documentation

◆ sam7xEthDriver

const NicDriver sam7xEthDriver

SAM7X Ethernet MAC driver.

Definition at line 86 of file sam7x_eth_driver.c.