and TCP related defines :
/* ---------- 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) On Fri, Aug 4, 2017 at 10:10 AM, Mohsin Madki <[email protected]> wrote: > Hi, > > I am using STM32F107 with FreeRTOS+LWIP with Netconn APIs. > > I have created 4 tcp ports (server in listening mode) and trasfers data > received to UARTS and viseversa. i.e. Ethernet to Serial converter (4 > port). > > I works well for few hours but later it stops working. lwipopts defines > are as follows: > > > /* ---------- 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 (10*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 64 //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 10 //6 > /* 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 12 > > /* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */ > #define PBUF_POOL_BUFSIZE 512 > > Please suggest if i am missing something. > > Regards, > Mohsin Madki. >
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