Re: [lwip-users] Problems with DHCP/IP/Ping

I would start by checking if your lwip device is responding to ARP queries. Get a wireshark trace going and when the PC sends a ping request you should first see an ARP query from the PC and an ARP response from the device. The ARP query from the PC asks “who has x.x.x.x? Tell y.y.y.y” where x.x.x.x is the address the pc is trying to ping and y.y.y.y is the ip address of the pc. The ARP response comes from the device and informs the PC of its MAC address. Until the pc learns the MAC address of the device it can’t communicate with it.

I am guessing your device is not responding to ARP queries and it may be because you have not set up the MAC to receive broadcast frames. ARP queries are sent to the broadcast MAC address ff:ff:ff:ff:ff:ff

Try adding this to your Ethernet Configuration:

ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Enable;

And maybe add these too because you do need broadcast but you may not need to receive ALL.

ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Disable;

ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;

hope it helps

-Zach

From: lwip-users-bounces+address@hidden [mailto:lwip-users-bounces+address@hidden On Behalf Of Christoph Ziegler
Sent: Thursday, April 03, 2014 1:28 AM
To: address@hidden
Subject: [lwip-users] Problems with DHCP/IP/Ping

Hallo,

i have a big problem with my DHCP/IP and ping.

When i start my STM32F4xx system and wait for IP from DHCP, i get successfully a IP.

But when I then try to ping my system, I get no response.

BUT…

When I start the ping cmd "ping -n 999 x.x.x.x" before I start the system, the ping is ever successfully when the system is started.

What am I doing wrong?

Here are fragments from my src:

MY lwipopts.h :

===============================================================================================================================

#ifndef __LWIPOPTS_H__

#define __LWIPOPTS_H__

/**

* SYS_LIGHTWEIGHT_PROT==1: if you want inter-task protection for certain

* critical regions during buffer allocation, deallocation and memory

* allocation and deallocation.

#define SYS_LIGHTWEIGHT_PROT 1

#define ETHARP_TRUST_IP_MAC 1

#define IP_REASSEMBLY 0

#define IP_FRAG 0

#define ARP_QUEUEING 1

//#define LWIP_AUTOIP 1

#define LWIP_NETIF_API 1

#define LWIP_ARP 1

#define IP_FORWARD 1

/**

* NO_SYS==1: Provides VERY minimal functionality. Otherwise,

* use lwIP facilities.

#define NO_SYS 0

/* ---------- Memory options ---------- */

/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which

lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2

byte alignment -> define MEM_ALIGNMENT to 2. */

#define MEM_ALIGNMENT 4

/* MEM_SIZE: the size of the heap memory. If the application will send

a lot of data that needs to be copied, this should be set high. */

#define MEM_SIZE (5*1024)

/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application

sends a lot of data out of ROM (or other static memory), this

should be set high. */

#define MEMP_NUM_PBUF 100

/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One

per active UDP "connection". */

#define MEMP_NUM_UDP_PCB 6

/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP

connections. */

#define MEMP_NUM_TCP_PCB 10

/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP

connections. */

#define MEMP_NUM_TCP_PCB_LISTEN 5

/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP

segments. */

#define MEMP_NUM_TCP_SEG 20

/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active

timeouts. */

#define MEMP_NUM_SYS_TIMEOUT 10

/* ---------- Pbuf options ---------- */

/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */

#define PBUF_POOL_SIZE 20

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */

#define PBUF_POOL_BUFSIZE 500

/* ---------- TCP options ---------- */

#define LWIP_TCP 1

#define TCP_TTL 255

/* Controls if TCP should queue segments that arrive out of

order. Define to 0 if your device is low on memory. */

#define TCP_QUEUE_OOSEQ 0

/* TCP Maximum segment size. */

#define TCP_MSS (1500 - 40) /* TCP_MSS = (Ethernet MTU - IP header size - TCP header size) */

/* TCP sender buffer space (bytes). */

#define TCP_SND_BUF (5*TCP_MSS)

/* TCP_SND_QUEUELEN: TCP sender buffer space (pbufs). This must be at least

as much as (2 * TCP_SND_BUF/TCP_MSS) for things to work. */

#define TCP_SND_QUEUELEN (4* TCP_SND_BUF/TCP_MSS)

/* TCP receive window. */

#define TCP_WND (2*TCP_MSS)

/* ---------- ICMP options ---------- */

#define LWIP_ICMP 1

/* ---------- DHCP options ---------- */

/* Define LWIP_DHCP to 1 if you want DHCP configuration of

interfaces. DHCP is not implemented in lwIP 0.5.1, however, so

turning this on does currently not work. */

#define LWIP_DHCP 1

#define DHCP_DOES_ARP_CHECK 1 /* 1 if you want to do an ARP check on the offered address (recommended). */

#define LWIP_NETIF_HOSTNAME 1

/* ---------- UDP options ---------- */

#define LWIP_UDP 1

#define UDP_TTL 255

/* ---------- Statistics options ---------- */

#define LWIP_STATS 1

#define LWIP_PROVIDE_ERRNO 1

/* ---------- link callback options ---------- */

/* LWIP_NETIF_LINK_CALLBACK==1: Support a callback function from an interface

* whenever the link changes (i.e., link down)

#define LWIP_NETIF_LINK_CALLBACK 0

--------------------------------------

---------- Checksum options ----------

--------------------------------------

The STM32F4x7 allows computing and verifying the IP, UDP, TCP and ICMP checksums by hardware:

- To use this feature let the following define uncommented.

- To disable it and process by CPU comment the the checksum.

//#define CHECKSUM_BY_HARDWARE

#ifdef CHECKSUM_BY_HARDWARE

/* CHECKSUM_GEN_IP==0: Generate checksums by hardware for outgoing IP packets.*/

#define CHECKSUM_GEN_IP 0

/* CHECKSUM_GEN_UDP==0: Generate checksums by hardware for outgoing UDP packets.*/

#define CHECKSUM_GEN_UDP 0

/* CHECKSUM_GEN_TCP==0: Generate checksums by hardware for outgoing TCP packets.*/

#define CHECKSUM_GEN_TCP 0

/* CHECKSUM_CHECK_IP==0: Check checksums by hardware for incoming IP packets.*/

#define CHECKSUM_CHECK_IP 0

/* CHECKSUM_CHECK_UDP==0: Check checksums by hardware for incoming UDP packets.*/

#define CHECKSUM_CHECK_UDP 0

/* CHECKSUM_CHECK_TCP==0: Check checksums by hardware for incoming TCP packets.*/

#define CHECKSUM_CHECK_TCP 0

/* CHECKSUM_CHECK_ICMP==0: Check checksums by hardware for incoming ICMP packets.*/

#define CHECKSUM_GEN_ICMP 0

#else

/* CHECKSUM_GEN_IP==1: Generate checksums in software for outgoing IP packets.*/

#define CHECKSUM_GEN_IP 1

/* CHECKSUM_GEN_UDP==1: Generate checksums in software for outgoing UDP packets.*/

#define CHECKSUM_GEN_UDP 1

/* CHECKSUM_GEN_TCP==1: Generate checksums in software for outgoing TCP packets.*/

#define CHECKSUM_GEN_TCP 1

/* CHECKSUM_CHECK_IP==1: Check checksums in software for incoming IP packets.*/

#define CHECKSUM_CHECK_IP 1

/* CHECKSUM_CHECK_UDP==1: Check checksums in software for incoming UDP packets.*/

#define CHECKSUM_CHECK_UDP 1

/* CHECKSUM_CHECK_TCP==1: Check checksums in software for incoming TCP packets.*/

#define CHECKSUM_CHECK_TCP 1

/* CHECKSUM_CHECK_ICMP==1: Check checksums by hardware for incoming ICMP packets.*/

#define CHECKSUM_GEN_ICMP 1

#endif

----------------------------------------------

---------- Sequential layer options ----------

----------------------------------------------

/**

* LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)

#define LWIP_NETCONN 1

------------------------------------

---------- Socket options ----------

------------------------------------

/**

* LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)

#define LWIP_SOCKET 1

-----------------------------------

---------- DEBUG options ----------

-----------------------------------

#define LWIP_DEBUG 1

#if LWIP_DEBUG

/**

* LWIP_DBG_TYPES_ON: A mask that can be used to globally enable/disable

* debug messages of certain types.

#define LWIP_DBG_TYPES_ON LWIP_DBG_ON

/**

* ETHARP_DEBUG: Enable debugging in etharp.c.

#define ETHARP_DEBUG LWIP_DBG_ON

/**

* NETIF_DEBUG: Enable debugging in netif.c.

#define NETIF_DEBUG LWIP_DBG_ON

/**

* PBUF_DEBUG: Enable debugging in pbuf.c.

#define PBUF_DEBUG LWIP_DBG_ON

/**

* API_LIB_DEBUG: Enable debugging in api_lib.c.

#define API_LIB_DEBUG LWIP_DBG_ON

/**

* API_MSG_DEBUG: Enable debugging in api_msg.c.

#define API_MSG_DEBUG LWIP_DBG_ON

/**

* SOCKETS_DEBUG: Enable debugging in sockets.c.

#define SOCKETS_DEBUG LWIP_DBG_ON

/**

* ICMP_DEBUG: Enable debugging in icmp.c.

#define ICMP_DEBUG LWIP_DBG_ON

/**

* IGMP_DEBUG: Enable debugging in igmp.c.

#define IGMP_DEBUG LWIP_DBG_OFF

/**

* INET_DEBUG: Enable debugging in inet.c.

#define INET_DEBUG LWIP_DBG_ON

/**

* IP_DEBUG: Enable debugging for IP.

#define IP_DEBUG LWIP_DBG_ON

/**

* IP_REASS_DEBUG: Enable debugging in ip_frag.c for both frag & reass.

#define IP_REASS_DEBUG LWIP_DBG_ON

/**

* RAW_DEBUG: Enable debugging in raw.c.

#define RAW_DEBUG LWIP_DBG_ON

/**

* MEM_DEBUG: Enable debugging in mem.c.

#define MEM_DEBUG LWIP_DBG_ON

/**

* MEMP_DEBUG: Enable debugging in memp.c.

#define MEMP_DEBUG LWIP_DBG_ON

/**

* SYS_DEBUG: Enable debugging in sys.c.

#define SYS_DEBUG LWIP_DBG_ON

/**

* TIMERS_DEBUG: Enable debugging in timers.c.

#define TIMERS_DEBUG LWIP_DBG_ON

/**

* TCP_DEBUG: Enable debugging for TCP.

#define TCP_DEBUG LWIP_DBG_ON

/**

* TCP_INPUT_DEBUG: Enable debugging in tcp_in.c for incoming debug.

#define TCP_INPUT_DEBUG LWIP_DBG_ON

/**

* TCP_FR_DEBUG: Enable debugging in tcp_in.c for fast retransmit.

#define TCP_FR_DEBUG LWIP_DBG_ON

/**

* TCP_RTO_DEBUG: Enable debugging in TCP for retransmit

* timeout.

#define TCP_RTO_DEBUG LWIP_DBG_ON

/**

* TCP_CWND_DEBUG: Enable debugging for TCP congestion window.

#define TCP_CWND_DEBUG LWIP_DBG_ON

/**

* TCP_WND_DEBUG: Enable debugging in tcp_in.c for window updating.

#define TCP_WND_DEBUG LWIP_DBG_ON

/**

* TCP_OUTPUT_DEBUG: Enable debugging in tcp_out.c output functions.

#define TCP_OUTPUT_DEBUG LWIP_DBG_ON

/**

* TCP_RST_DEBUG: Enable debugging for TCP with the RST message.

#define TCP_RST_DEBUG LWIP_DBG_ON

/**

* TCP_QLEN_DEBUG: Enable debugging for TCP queue lengths.

#define TCP_QLEN_DEBUG LWIP_DBG_OFF

/**

* UDP_DEBUG: Enable debugging in UDP.

#define UDP_DEBUG LWIP_DBG_ON

/**

* TCPIP_DEBUG: Enable debugging in tcpip.c.

#define TCPIP_DEBUG LWIP_DBG_ON

/**

* PPP_DEBUG: Enable debugging for PPP.

#define PPP_DEBUG LWIP_DBG_OFF

/**

* SLIP_DEBUG: Enable debugging in slipif.c.

#define SLIP_DEBUG LWIP_DBG_OFF

/**

* DHCP_DEBUG: Enable debugging in dhcp.c.

#define DHCP_DEBUG LWIP_DBG_ON

/**

* AUTOIP_DEBUG: Enable debugging in autoip.c.

#define AUTOIP_DEBUG LWIP_DBG_OFF

/**

* SNMP_MSG_DEBUG: Enable debugging for SNMP messages.

#define SNMP_MSG_DEBUG LWIP_DBG_OFF

/**

* SNMP_MIB_DEBUG: Enable debugging for SNMP MIBs.

#define SNMP_MIB_DEBUG LWIP_DBG_OFF

/**

* DNS_DEBUG: Enable debugging for DNS.

#define DNS_DEBUG LWIP_DBG_OFF

#endif /* LWIP_DEBUG */

---------------------------------

---------- OS options ----------

---------------------------------

#define TCPIP_THREAD_NAME "TCP/IP"

#define TCPIP_THREAD_STACKSIZE 1000

#define TCPIP_MBOX_SIZE 5

#define DEFAULT_UDP_RECVMBOX_SIZE 2000

#define DEFAULT_TCP_RECVMBOX_SIZE 2000

#define DEFAULT_ACCEPTMBOX_SIZE 2000

#define DEFAULT_THREAD_STACKSIZE 500

#define TCPIP_THREAD_PRIO (configMAX_PRIORITIES - 2)

#define LWIP_COMPAT_MUTEX 1

#endif /* __LWIPOPTS_H__ */

=========================================================================================================================================

AND HERE IS MY dhcp-func and eth conf:

=========================================================================================================================================

/* Includes ------------------------------------------------------------------*/

/* C includes */

#include <stdio.h>

/* STM includes */

#include "stm32f4xx.h" /* STM32F4xx Definitions */

#include "stm32f4x7_eth.h"

/* FreeRTOS includes */

#include "FreeRTOS.h"

#include "task.h"

#include "semphr.h"

/* LwIP includes */

#include "lwip/opt.h"

#include "netif.h"

#include "lwip/netifapi.h"

#include "lwip/dhcp.h"

#include "lwip/mem.h"

#include "lwip/memp.h"

#include "ethernetif.h"

#include "tcpip.h"

/* RM includes */

#include "eth.h"

#include "main.h"

/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

#define eth_DHCP_START 1

#define eth_DHCP_WAIT_ADDRESS 2

#define eth_DHCP_ADDRESS_ASSIGNED 3

#define eth_DHCP_TIMEOUT 4

#define eth_DHCP_LINK_DOWN 5

#define eth_MAX_DHCP_TRIES 5

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

#define DHCP_TASK_PRIO ( tskIDLE_PRIORITY + 4 )

static struct ip_addr ipaddr;

static struct ip_addr netmask;

static struct ip_addr gw;

ETH_InitTypeDef eth_InitStructure;

__IO uint32_t EthStatus = 0;

#ifdef USE_DHCP

__IO uint8_t DHCP_state;

#endif /* LWIP_DHCP */

/* Private function prototypes -----------------------------------------------*/

static void eth_HwConfig_GPIO(void);

static void eth_HwConfig_NVIC(void);

static void eth_HwConfig_MACDMA(void);

void eth_LwIP_SetStaticIP (void);

void eth_LwIP_Init(void);

/* Private functions ---------------------------------------------------------*/

/**

* @brief ETH_BSP_Config

* @param None

* @retval None

void RM_ETH_Init(void)

{

#ifdef RM_DEBUG_PRINTF

printf("exec eth_HwConfig_GPIO()\n");

#endif /* RM_DEBUG_PRINTF */

/* Configure the GPIO ports for ethernet pins */

eth_HwConfig_GPIO();

#ifdef RM_DEBUG_PRINTF

printf("exec eth_HwConfig_NVIC()\n");

#endif /* RM_DEBUG_PRINTF */

/* Config NVIC for Ethernet */

eth_HwConfig_NVIC();

#ifdef RM_DEBUG_PRINTF

printf("exec eth_HwConfig_MACDMA()\n");

#endif /* RM_DEBUG_PRINTF */

/* Configure the Ethernet MAC/DMA */

eth_HwConfig_MACDMA();

#ifdef RM_DEBUG_PRINTF

printf("exec eth_LwIP_Init()\n");

#endif /* RM_DEBUG_PRINTF */

/* Initilaize the LwIP stack */

eth_LwIP_Init();

}

/* Private functions ---------------------------------------------------------*/

/**

* @brief Initializes the lwIP stack

* @param None

* @retval None

void eth_LwIP_Init(void)

{

/* Create tcp_ip stack thread */

tcpip_init( NULL, NULL );

/* IP address setting */

ipaddr.addr = 0;

netmask.addr = 0;

gw.addr = 0;

netif_add(

&ETH_EthInterface,

NULL,

&ethernetif_init,

&tcpip_input

);

/* Registers the default network interface.*/

netif_set_default(&ETH_EthInterface);

ETH_EthInterface.flags |= NETIF_FLAG_LINK_UP;

netif_set_down(&ETH_EthInterface);

#ifdef USE_DHCP

#ifdef RM_DEBUG_PRINTF

printf("start ETH_LwIP_DHCP_task\n");

#endif /* RM_DEBUG_PRINTF */

/* Start DHCPClient */

xTaskCreate(ETH_LwIP_DHCP_task, (int8_t *)"DHCP", configMINIMAL_STACK_SIZE * 2, NULL, DHCP_TASK_PRIO, NULL);

DHCP_state = eth_DHCP_START;

#else

eth_LwIP_SetStaticIP ();

#endif /* USE_DHCP */

}

void eth_LwIP_SetStaticIP (void)

{

/* Static address used */

IP4_ADDR(&ipaddr, IP_ADDR0 ,IP_ADDR1 , IP_ADDR2 , IP_ADDR3 );

IP4_ADDR(&netmask, NETMASK_ADDR0, NETMASK_ADDR1, NETMASK_ADDR2, NETMASK_ADDR3);

IP4_ADDR(&gw, GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);

netif_set_addr(&ETH_EthInterface, &ipaddr , &netmask, &gw);

#ifdef RM_DEBUG_PRINTF

printf("Static IP eingestellt: %d.%d.%d.%d\r\n",

ip4_addr1(&ETH_EthInterface.ip_addr),

ip4_addr2(&ETH_EthInterface.ip_addr),

ip4_addr3(&ETH_EthInterface.ip_addr),

ip4_addr4(&ETH_EthInterface.ip_addr) );

#endif /* RM_DEBUG_PRINTF */

/* When the netif is fully configured this function must be called.*/

netif_set_up(&ETH_EthInterface);

}

#ifdef USE_DHCP

/**

* @brief LwIP_DHCP_Process_Handle

* @param None

* @retval None

void ETH_LwIP_DHCP_task(void * pvParameters)

{

uint32_t IPaddress;

for (;;)

{

switch (DHCP_state)

{

case eth_DHCP_START:

{

netifapi_dhcp_start(&ETH_EthInterface);

/* IP address should be set to 0

every time we want to assign a new DHCP address*/

IPaddress = 0;

DHCP_state = eth_DHCP_WAIT_ADDRESS;

}

break;

case eth_DHCP_WAIT_ADDRESS:

{

/* Read the new IP address */

IPaddress = ETH_EthInterface.ip_addr.addr;

if (IPaddress!=0)

{

DHCP_state = eth_DHCP_ADDRESS_ASSIGNED;

#ifdef RM_DEBUG_PRINTF

printf("IP von DHCP erhalten: %d.%d.%d.%d\r\n",

ip4_addr1(&ETH_EthInterface.ip_addr),

ip4_addr2(&ETH_EthInterface.ip_addr),

ip4_addr3(&ETH_EthInterface.ip_addr),

ip4_addr4(&ETH_EthInterface.ip_addr) );

#endif /* RM_DEBUG_PRINTF */

// netifapi_dhcp_release(&ETH_EthInterface);

/* Stop DHCP */

netifapi_dhcp_stop(&ETH_EthInterface);

}

else

{

/* DHCP timeout */

if (ETH_EthInterface.dhcp->tries > eth_MAX_DHCP_TRIES)

{

DHCP_state = eth_DHCP_TIMEOUT;

/* Stop DHCP */

netifapi_dhcp_stop(&ETH_EthInterface);

eth_LwIP_SetStaticIP ();

for( ;; )

{

vTaskDelete(NULL);

}

break;

default:

break;

}

/* wait 250 ms */

vTaskDelay(250);

}

#endif /* USE_DHCP */

/**

* @brief Configures the different GPIO ports.

* @param None

* @retval None

void eth_HwConfig_GPIO(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); /* Enable SYSCFG clock */

RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_ETH_MAC, ENABLE); /* Reset Ethernet MAC */

SYSCFG_ETH_MediaInterfaceConfig(SYSCFG_ETH_MediaInterface_MII);

RCC_AHB1PeriphResetCmd(RCC_AHB1Periph_ETH_MAC, DISABLE); /* Reset Ethernet MAC */

/* Enable GPIOs clocks */

RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA |

RCC_AHB1Periph_GPIOB |

RCC_AHB1Periph_GPIOC, ENABLE); /* Enable GPIOA, GPIOB, GPIOC clocks */

/* Configure Port A ethernet pins (PA.0, PA.1, PA.3, PA.7) */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_3 | GPIO_Pin_7;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GPIO_Init(GPIOA, &GPIO_InitStructure);

// Connect Ethernet pins to AF11

GPIO_PinAFConfig(GPIOA, GPIO_PinSource0, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource1, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_ETH);

/* Configure Port B ethernet pins (PB.0, PB.1, PB.8, PB.10, PB.11, PB.12, PB.13) */

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GPIO_Init(GPIOB, &GPIO_InitStructure);

// Connect Ethernet pins to AF11

GPIO_PinAFConfig(GPIOB, GPIO_PinSource0, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource1, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource12, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_ETH);

/* Configure Port C ethernet pins (PC.2, PC.3, PC.4, PC.5) */

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3| GPIO_Pin_4 | GPIO_Pin_5;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

GPIO_Init(GPIOC, &GPIO_InitStructure);

// Connect Ethernet pins to AF11

GPIO_PinAFConfig(GPIOC, GPIO_PinSource2, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOC, GPIO_PinSource3, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOC, GPIO_PinSource4, GPIO_AF_ETH);

GPIO_PinAFConfig(GPIOC, GPIO_PinSource5, GPIO_AF_ETH);

}

/**

* @brief Configures and enable the Ethernet global interrupt.

* @param None

* @retval None

void eth_HwConfig_NVIC(void)

{

NVIC_InitTypeDef NVIC_InitStructure;

/* Enable the Ethernet global Interrupt */

NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 10 ;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

}

/**

* @brief Configures the Ethernet Interface

* @param None

* @retval None

static void eth_HwConfig_MACDMA(void)

{

/* Enable ETHERNET clock */

RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_ETH_MAC |

RCC_AHB1Periph_ETH_MAC_Tx |

RCC_AHB1Periph_ETH_MAC_Rx |

RCC_AHB1Periph_ETH_MAC_PTP, ENABLE); /* Enable Ethernet clocks */

/* Software reset */

ETH_SoftwareReset();

/* Wait for software reset */

while (ETH_GetSoftwareResetStatus() == SET);

/* ETHERNET Configuration --------------------------------------------------*/

/* Call ETH_StructInit if you don't like to configure all eth_InitStructure parameter */

ETH_StructInit(&eth_InitStructure);

// Setup ETH->MACMIIAR : //Default passt

// Setup ETH->MACCR :

eth_InitStructure.ETH_ReceiveOwn = ETH_ReceiveOwn_Disable;

eth_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Disable;

// Setup ETH->MACFFR :

//eth_InitStructure.ETH_MulticastFramesFilter = 0x410;

// Setup ETH->MACFCR : //Default passt

// Setup ETH->MACVLANTR : //Default passt

// Setup ETH->DMAOMR :

eth_InitStructure.ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Enable;

eth_InitStructure.ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Disable;

eth_InitStructure.ETH_TransmitStoreForward = ETH_TransmitStoreForward_Disable;

// Setup ETH->DMABMR :

eth_InitStructure.ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Disable;

eth_InitStructure.ETH_FixedBurst = ETH_FixedBurst_Disable;

#ifdef CHECKSUM_BY_HARDWARE

eth_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable;

#endif

/* Configure Ethernet */

EthStatus = ETH_Init(&eth_InitStructure, 1);

/* Enable the Ethernet Rx Interrupt */

ETH->DMASR = 0xFFFFFFFF; // Reset all interrupts

ETH_DMAITConfig(ETH_DMAIER_NISE | ETH_DMAIER_RIE, ENABLE);

}

=========================================================================================================================================

Can everyone help me?

Christoph Ziegler
Research & Development (R&D)

RM MICHAELIDES
SOFTWARE & ELEKTRONIK GMBH
Donaustr. 14 | 36043 Fulda | Germany
Phone
Fax +49 661 9490-333
www.rmcan.com

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From:	Zach Smith
Subject:	Re: [lwip-users] Problems with DHCP/IP/Ping
Date:	Thu, 3 Apr 2014 14:54:52 +0000