I am using lwip on a stellaris micro that is running safeRTOS. I have three TCP/IP sockets I use to send and receive data. One socket sends 10k bytes and the other two sockets send and receive data in 256 byte blocks at a time. When I increased the size of the data I send from 6k bytes to 10K byte transfers, I had to increase the variable TCP_SND_BUF in the options file. The CPU I am using only has 96K of memory and I noticed that lwip is using a considerable amount of memory (RAM):
>From the map file: Location size 20007a34 00006a24 lwiplib.obj (.bss:memp_memory) 2000e458 00005814 lwiplib.obj (.bss:ram_heap) Everything is working but I was wondering if I could post my lwipopts.h file and get some advice on using less memory (RAM). I am using zero copy when I send the data and use the following call: ert = tcp_write(mainNetInfoStruct.pcb, data, size, 0); Is this amount of RAM use typical or can I tune lwip to use less RAM? Thanks DB _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
