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FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
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lwIP_Demo_Rowley_ARM7 crash with a pingPosted by pdesii on March 14, 2008 Hi, lwIP_Demo_Rowley_ARM7 seems to crash if I make a ping with big packet. The ping used is: ping 172.25.218.205 -l 4096 I compiled the project with gcc. Someone can confirm me the problem? Someone can help me? Thanks a lot for your time. Bye, Paolo. RE: lwIP_Demo_Rowley_ARM7 crash with a pingPosted by Richard on March 14, 2008 I imagine this is something to do with the buffer sizes. Am I right in assuming that pings of size less than 1500 work ok? Regards. RE: lwIP_Demo_Rowley_ARM7 crash with a pingPosted by pdesii on March 17, 2008 Yes, you are right. It works well with ping until 2000 byte. Then, with bigger ping, application crashes; if some packet was discarded, it have been not a big problem, but crashing, all application is unusable. I tried to change al lot of lwip options, but the result was always the same. I am very sorry, ... but I have no more ideas!! (:<) Regards, Paolo. RE: lwIP_Demo_Rowley_ARM7 crash with a pingPosted by danilo vendruscolo on March 18, 2008 i have run into the same problem and I had it fixed when I disabled ip frag and ip reassembly at lwiopt.h You could try the lwip forum too, there are some bugs in pbuf.c that they say it would cause this problem, but when I download a newer pbuf.c, version 1.86, the bug persisted. So the solution was to add these two lines to lwiopts.h #define IP_FRAG 0 #define IP_REASSEMBLY 0 hope it helps. danilo
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