esp32_eth_driver.h File Reference

ESP32 Ethernet MAC driver. More...

#include "core/nic.h"

Go to the source code of this file.

Data Structures

struct  Esp32EthTxDmaDesc
 Enhanced TX DMA descriptor. More...
struct  Esp32EthRxDmaDesc
 Enhanced RX DMA descriptor. More...


#define ESP32_ETH_TX_BUFFER_SIZE   1536
#define ESP32_ETH_RX_BUFFER_SIZE   1536
#define EMAC_TDES0_OWN   0x80000000
#define EMAC_TDES0_IC   0x40000000
#define EMAC_TDES0_LS   0x20000000
#define EMAC_TDES0_FS   0x10000000
#define EMAC_TDES0_DC   0x08000000
#define EMAC_TDES0_DP   0x04000000
#define EMAC_TDES0_TTSE   0x02000000
#define EMAC_TDES0_CIC   0x00C00000
#define EMAC_TDES0_TER   0x00200000
#define EMAC_TDES0_TCH   0x00100000
#define EMAC_TDES0_TTSS   0x00020000
#define EMAC_TDES0_IHE   0x00010000
#define EMAC_TDES0_ES   0x00008000
#define EMAC_TDES0_JT   0x00004000
#define EMAC_TDES0_FF   0x00002000
#define EMAC_TDES0_IPE   0x00001000
#define EMAC_TDES0_LCA   0x00000800
#define EMAC_TDES0_NC   0x00000400
#define EMAC_TDES0_LCO   0x00000200
#define EMAC_TDES0_EC   0x00000100
#define EMAC_TDES0_VF   0x00000080
#define EMAC_TDES0_CC   0x00000078
#define EMAC_TDES0_ED   0x00000004
#define EMAC_TDES0_UF   0x00000002
#define EMAC_TDES0_DB   0x00000001
#define EMAC_TDES1_TBS2   0x1FFF0000
#define EMAC_TDES1_TBS1   0x00001FFF
#define EMAC_RDES0_OWN   0x80000000
#define EMAC_RDES0_AFM   0x40000000
#define EMAC_RDES0_FL   0x3FFF0000
#define EMAC_RDES0_ES   0x00008000
#define EMAC_RDES0_DE   0x00004000
#define EMAC_RDES0_SAF   0x00002000
#define EMAC_RDES0_LE   0x00001000
#define EMAC_RDES0_OE   0x00000800
#define EMAC_RDES0_VLAN   0x00000400
#define EMAC_RDES0_FS   0x00000200
#define EMAC_RDES0_LS   0x00000100
#define EMAC_RDES0_IPHCE   0x00000080
#define EMAC_RDES0_LCO   0x00000040
#define EMAC_RDES0_FT   0x00000020
#define EMAC_RDES0_RWT   0x00000010
#define EMAC_RDES0_RE   0x00000008
#define EMAC_RDES0_DBE   0x00000004
#define EMAC_RDES0_CE   0x00000002
#define EMAC_RDES0_PCE   0x00000001
#define EMAC_RDES1_DIC   0x80000000
#define EMAC_RDES1_RBS2   0x1FFF0000
#define EMAC_RDES1_RER   0x00008000
#define EMAC_RDES1_RCH   0x00004000
#define EMAC_RDES1_RBS1   0x00001FFF
#define EMAC_RDES4_PV   0x00002000
#define EMAC_RDES4_PFT   0x00001000
#define EMAC_RDES4_PMT   0x00000F00
#define EMAC_RDES4_IPV6PR   0x00000080
#define EMAC_RDES4_IPV4PR   0x00000040
#define EMAC_RDES4_IPCB   0x00000020
#define EMAC_RDES4_IPPE   0x00000010
#define EMAC_RDES4_IPHE   0x00000008
#define EMAC_RDES4_IPPT   0x00000007


error_t esp32EthInit (NetInterface *interface)
 ESP32 Ethernet MAC initialization. More...
void esp32EthInitGpio (NetInterface *interface)
void esp32EthInitDmaDesc (NetInterface *interface)
 Initialize DMA descriptor lists. More...
void esp32EthTick (NetInterface *interface)
 ESP32 Ethernet MAC timer handler. More...
void esp32EthEnableIrq (NetInterface *interface)
 Enable interrupts. More...
void esp32EthDisableIrq (NetInterface *interface)
 Disable interrupts. More...
void esp32EthIrqHandler (void *arg)
 ESP32 Ethernet MAC interrupt service routine. More...
void esp32EthEventHandler (NetInterface *interface)
 ESP32 Ethernet MAC event handler. More...
error_t esp32EthSendPacket (NetInterface *interface, const NetBuffer *buffer, size_t offset, NetTxAncillary *ancillary)
 Send a packet. More...
error_t esp32EthReceivePacket (NetInterface *interface)
 Receive a packet. More...
error_t esp32EthUpdateMacAddrFilter (NetInterface *interface)
 Configure MAC address filtering. More...
error_t esp32EthUpdateMacConfig (NetInterface *interface)
 Adjust MAC configuration parameters for proper operation. More...
void esp32EthWritePhyReg (uint8_t opcode, uint8_t phyAddr, uint8_t regAddr, uint16_t data)
 Write PHY register. More...
uint16_t esp32EthReadPhyReg (uint8_t opcode, uint8_t phyAddr, uint8_t regAddr)
 Read PHY register. More...


const NicDriver esp32EthDriver
 ESP32 Ethernet MAC driver. More...

Detailed Description

ESP32 Ethernet MAC driver.


SPDX-License-Identifier: GPL-2.0-or-later

Copyright (C) 2010-2020 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 esp32_eth_driver.h.

Macro Definition Documentation


#define EMAC_RDES0_AFM   0x40000000

Definition at line 121 of file esp32_eth_driver.h.


#define EMAC_RDES0_CE   0x00000002

Definition at line 137 of file esp32_eth_driver.h.


#define EMAC_RDES0_DBE   0x00000004

Definition at line 136 of file esp32_eth_driver.h.


#define EMAC_RDES0_DE   0x00004000

Definition at line 124 of file esp32_eth_driver.h.


#define EMAC_RDES0_ES   0x00008000

Definition at line 123 of file esp32_eth_driver.h.


#define EMAC_RDES0_FL   0x3FFF0000

Definition at line 122 of file esp32_eth_driver.h.


#define EMAC_RDES0_FS   0x00000200

Definition at line 129 of file esp32_eth_driver.h.


#define EMAC_RDES0_FT   0x00000020

Definition at line 133 of file esp32_eth_driver.h.


#define EMAC_RDES0_IPHCE   0x00000080

Definition at line 131 of file esp32_eth_driver.h.


#define EMAC_RDES0_LCO   0x00000040

Definition at line 132 of file esp32_eth_driver.h.


#define EMAC_RDES0_LE   0x00001000

Definition at line 126 of file esp32_eth_driver.h.


#define EMAC_RDES0_LS   0x00000100

Definition at line 130 of file esp32_eth_driver.h.


#define EMAC_RDES0_OE   0x00000800

Definition at line 127 of file esp32_eth_driver.h.


#define EMAC_RDES0_OWN   0x80000000

Definition at line 120 of file esp32_eth_driver.h.


#define EMAC_RDES0_PCE   0x00000001

Definition at line 138 of file esp32_eth_driver.h.


#define EMAC_RDES0_RE   0x00000008

Definition at line 135 of file esp32_eth_driver.h.


#define EMAC_RDES0_RWT   0x00000010

Definition at line 134 of file esp32_eth_driver.h.


#define EMAC_RDES0_SAF   0x00002000

Definition at line 125 of file esp32_eth_driver.h.


#define EMAC_RDES0_VLAN   0x00000400

Definition at line 128 of file esp32_eth_driver.h.


#define EMAC_RDES1_DIC   0x80000000

Definition at line 139 of file esp32_eth_driver.h.


#define EMAC_RDES1_RBS1   0x00001FFF

Definition at line 143 of file esp32_eth_driver.h.


#define EMAC_RDES1_RBS2   0x1FFF0000

Definition at line 140 of file esp32_eth_driver.h.


#define EMAC_RDES1_RCH   0x00004000

Definition at line 142 of file esp32_eth_driver.h.


#define EMAC_RDES1_RER   0x00008000

Definition at line 141 of file esp32_eth_driver.h.



Definition at line 144 of file esp32_eth_driver.h.



Definition at line 145 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPCB   0x00000020

Definition at line 151 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPHE   0x00000008

Definition at line 153 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPPE   0x00000010

Definition at line 152 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPPT   0x00000007

Definition at line 154 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPV4PR   0x00000040

Definition at line 150 of file esp32_eth_driver.h.


#define EMAC_RDES4_IPV6PR   0x00000080

Definition at line 149 of file esp32_eth_driver.h.


#define EMAC_RDES4_PFT   0x00001000

Definition at line 147 of file esp32_eth_driver.h.


#define EMAC_RDES4_PMT   0x00000F00

Definition at line 148 of file esp32_eth_driver.h.


#define EMAC_RDES4_PV   0x00002000

Definition at line 146 of file esp32_eth_driver.h.



Definition at line 155 of file esp32_eth_driver.h.



Definition at line 156 of file esp32_eth_driver.h.


#define EMAC_TDES0_CC   0x00000078

Definition at line 108 of file esp32_eth_driver.h.


#define EMAC_TDES0_CIC   0x00C00000

Definition at line 94 of file esp32_eth_driver.h.


#define EMAC_TDES0_DB   0x00000001

Definition at line 111 of file esp32_eth_driver.h.


#define EMAC_TDES0_DC   0x08000000

Definition at line 91 of file esp32_eth_driver.h.


#define EMAC_TDES0_DP   0x04000000

Definition at line 92 of file esp32_eth_driver.h.


#define EMAC_TDES0_EC   0x00000100

Definition at line 106 of file esp32_eth_driver.h.


#define EMAC_TDES0_ED   0x00000004

Definition at line 109 of file esp32_eth_driver.h.


#define EMAC_TDES0_ES   0x00008000

Definition at line 99 of file esp32_eth_driver.h.


#define EMAC_TDES0_FF   0x00002000

Definition at line 101 of file esp32_eth_driver.h.


#define EMAC_TDES0_FS   0x10000000

Definition at line 90 of file esp32_eth_driver.h.


#define EMAC_TDES0_IC   0x40000000

Definition at line 88 of file esp32_eth_driver.h.


#define EMAC_TDES0_IHE   0x00010000

Definition at line 98 of file esp32_eth_driver.h.


#define EMAC_TDES0_IPE   0x00001000

Definition at line 102 of file esp32_eth_driver.h.


#define EMAC_TDES0_JT   0x00004000

Definition at line 100 of file esp32_eth_driver.h.


#define EMAC_TDES0_LCA   0x00000800

Definition at line 103 of file esp32_eth_driver.h.


#define EMAC_TDES0_LCO   0x00000200

Definition at line 105 of file esp32_eth_driver.h.


#define EMAC_TDES0_LS   0x20000000

Definition at line 89 of file esp32_eth_driver.h.


#define EMAC_TDES0_NC   0x00000400

Definition at line 104 of file esp32_eth_driver.h.


#define EMAC_TDES0_OWN   0x80000000

Definition at line 87 of file esp32_eth_driver.h.


#define EMAC_TDES0_TCH   0x00100000

Definition at line 96 of file esp32_eth_driver.h.


#define EMAC_TDES0_TER   0x00200000

Definition at line 95 of file esp32_eth_driver.h.


#define EMAC_TDES0_TTSE   0x02000000

Definition at line 93 of file esp32_eth_driver.h.


#define EMAC_TDES0_TTSS   0x00020000

Definition at line 97 of file esp32_eth_driver.h.


#define EMAC_TDES0_UF   0x00000002

Definition at line 110 of file esp32_eth_driver.h.


#define EMAC_TDES0_VF   0x00000080

Definition at line 107 of file esp32_eth_driver.h.


#define EMAC_TDES1_TBS1   0x00001FFF

Definition at line 113 of file esp32_eth_driver.h.


#define EMAC_TDES1_TBS2   0x1FFF0000

Definition at line 112 of file esp32_eth_driver.h.



Definition at line 114 of file esp32_eth_driver.h.



Definition at line 115 of file esp32_eth_driver.h.



Definition at line 116 of file esp32_eth_driver.h.



Definition at line 117 of file esp32_eth_driver.h.



Definition at line 74 of file esp32_eth_driver.h.



Definition at line 67 of file esp32_eth_driver.h.



Definition at line 81 of file esp32_eth_driver.h.



Definition at line 53 of file esp32_eth_driver.h.


#define ESP32_ETH_RX_BUFFER_SIZE   1536

Definition at line 60 of file esp32_eth_driver.h.



Definition at line 39 of file esp32_eth_driver.h.


#define ESP32_ETH_TX_BUFFER_SIZE   1536

Definition at line 46 of file esp32_eth_driver.h.

Function Documentation

◆ esp32EthDisableIrq()

void esp32EthDisableIrq ( NetInterface interface)

Disable interrupts.

[in]interfaceUnderlying network interface

Definition at line 430 of file esp32_eth_driver.c.

◆ esp32EthEnableIrq()

void esp32EthEnableIrq ( NetInterface interface)

Enable interrupts.

[in]interfaceUnderlying network interface

Definition at line 404 of file esp32_eth_driver.c.

◆ esp32EthEventHandler()

void esp32EthEventHandler ( NetInterface interface)

ESP32 Ethernet MAC event handler.

[in]interfaceUnderlying network interface

Definition at line 509 of file esp32_eth_driver.c.

◆ esp32EthInit()

error_t esp32EthInit ( NetInterface interface)

ESP32 Ethernet MAC initialization.

[in]interfaceUnderlying network interface
Error code

Definition at line 97 of file esp32_eth_driver.c.

◆ esp32EthInitDmaDesc()

void esp32EthInitDmaDesc ( NetInterface interface)

Initialize DMA descriptor lists.

[in]interfaceUnderlying network interface

Definition at line 310 of file esp32_eth_driver.c.

◆ esp32EthInitGpio()

void esp32EthInitGpio ( NetInterface interface)

◆ esp32EthIrqHandler()

void esp32EthIrqHandler ( void *  arg)

ESP32 Ethernet MAC interrupt service routine.

[in]argUnused parameter

Definition at line 456 of file esp32_eth_driver.c.

◆ esp32EthReadPhyReg()

uint16_t esp32EthReadPhyReg ( uint8_t  opcode,
uint8_t  phyAddr,
uint8_t  regAddr 

Read PHY register.

[in]opcodeAccess type (2 bits)
[in]phyAddrPHY address (5 bits)
[in]regAddrRegister address (5 bits)
Register value

Definition at line 867 of file esp32_eth_driver.c.

◆ esp32EthReceivePacket()

error_t esp32EthReceivePacket ( NetInterface interface)

Receive a packet.

[in]interfaceUnderlying network interface
Error code

Definition at line 604 of file esp32_eth_driver.c.

◆ esp32EthSendPacket()

error_t esp32EthSendPacket ( NetInterface interface,
const NetBuffer buffer,
size_t  offset,
NetTxAncillary ancillary 

Send a packet.

[in]interfaceUnderlying network interface
[in]bufferMulti-part buffer containing the data to send
[in]offsetOffset to the first data byte
[in]ancillaryAdditional options passed to the stack along with the packet
Error code

Definition at line 545 of file esp32_eth_driver.c.

◆ esp32EthTick()

void esp32EthTick ( NetInterface interface)

ESP32 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 379 of file esp32_eth_driver.c.

◆ esp32EthUpdateMacAddrFilter()

error_t esp32EthUpdateMacAddrFilter ( NetInterface interface)

Configure MAC address filtering.

[in]interfaceUnderlying network interface
Error code

Definition at line 674 of file esp32_eth_driver.c.

◆ esp32EthUpdateMacConfig()

error_t esp32EthUpdateMacConfig ( NetInterface interface)

Adjust MAC configuration parameters for proper operation.

[in]interfaceUnderlying network interface
Error code

Definition at line 782 of file esp32_eth_driver.c.

◆ esp32EthWritePhyReg()

void esp32EthWritePhyReg ( uint8_t  opcode,
uint8_t  phyAddr,
uint8_t  regAddr,
uint16_t  data 

Write PHY register.

[in]opcodeAccess type (2 bits)
[in]phyAddrPHY address (5 bits)
[in]regAddrRegister address (5 bits)
[in]dataRegister value

Definition at line 825 of file esp32_eth_driver.c.

Variable Documentation

◆ esp32EthDriver

const NicDriver esp32EthDriver

ESP32 Ethernet MAC driver.

Definition at line 70 of file esp32_eth_driver.c.