Hi,
I use LWIP 1.3.1 of STM32F107 (ARM Cortex M3).
I have create server on my board, and when a computer client is connected,
i sent in continuous (with my board) an identical frame . The goal is to be
sent as soon as possible.
The probleme, is my server isn't stable. The flow down permanently (start
at 45Mbits/s and after 5 minute is 0,2Mbtis/s)
I try for a week.
this my main: my PCB is serveur1.tcp-socket
while(1){
LwIP_Periodic_Handle(LocalTime);
if((serveur1.connectionok==1)){ // if cnx is OK
if((1440 <
(serveur1.tcp_socket)->snd_buf)&&(((serveur1.tcp_socket)->snd_queuelen <
TCP_SND_QUEUELEN)||((serveur1.tcp_socket)->snd_queuelen <
TCP_SNDQUEUELEN_OVERFLOW))){
err = tcp_write(serveur1.tcp_socket,serveur1.buffer1,1440,0);
if (err == ERR_OK){
tcp_output(serveur1.tcp_socket);
}
else if((err>-9)&&(err<-4)){
sprintf(usart2.txbuffer,"ERR2N∞%d \r\n",err);
serveur1.connectionok=0; // cnx is OFF
}
else if(err>-4){
sprintf(usart2.txbuffer,"ERR4N∞%d \r\n",err);
}}}
I have a lot of error message with "ERR4N -1" so a ERR MEM but i have
verified the snd_buf.
I join my file "lwipopts.h". I call TCP_TMR() every 100ms
with LwIP_Periodic_Handle(LocalTime);
With wirehark, i see the "push ack" frame of serveur. but each frame send i
"PUSH ACK", but the client ACK every 2 frame.
If you want its possible to joint the PCAP file of wireshark.
Thank you
/**
******************************************************************************
* @file lwipopts.h
* @author MCD Application Team
* @version V1.0.0
* @date 11/20/2009
* @brief lwIP Options Configuration.
* This file is based on Utilities\lwip-1.3.1\src\include\lwip\opt.h
* and contains the lwIP configuration for the STM32F107 demonstration.
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
*/
#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 0
/**
* NO_SYS==1: Provides VERY minimal functionality. Otherwise,
* use lwIP facilities.
*/
#define NO_SYS 1
/* ---------- 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. 20*1024*/
#define MEM_SIZE (20*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. 10*/
#define MEMP_NUM_PBUF 10
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#define MEMP_NUM_UDP_PCB 0
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
connections. */
#define MEMP_NUM_TCP_PCB 1
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 1
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
segments. 12 5+(2 * TCP_SND_BUF)/TCP_MSS*/
#define MEMP_NUM_TCP_SEG 12
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
timeouts. 3*/
#define MEMP_NUM_SYS_TIMEOUT 5
/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. 10 4 2*/
#define PBUF_POOL_SIZE 10
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. 1500*/
#define PBUF_POOL_BUFSIZE 1500
/* ---------- 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). 4 3 */
#define TCP_SND_BUF (4*TCP_MSS)
/* TCP sender buffer space (pbufs). This must be at least = 2 *
TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN (6 * TCP_SND_BUF)/TCP_MSS
/* TCP receive window. */
#define TCP_WND (2*PBUF_POOL_BUFSIZE)
/* ---------- 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 0
/* ---------- UDP options ---------- */
#define LWIP_UDP 0
#define UDP_TTL 255
/* ---------- Statistics options ---------- */
#define LWIP_STATS 0
#define LWIP_PROVIDE_ERRNO 0
/*
--------------------------------------
---------- Checksum options ----------
--------------------------------------
*/
/*
The STM32F107 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
#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
#endif
/*
----------------------------------------------
---------- Sequential layer options ----------
----------------------------------------------
*/
/**
* LWIP_NETCONN==1: Enable Netconn API (require to use api_lib.c)
*/
#define LWIP_NETCONN 0
/*
------------------------------------
---------- Socket options ----------
------------------------------------
*/
/**
* LWIP_SOCKET==1: Enable Socket API (require to use sockets.c)
*/
#define LWIP_SOCKET 0
#endif /* __LWIPOPTS_H__ */
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
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