Hi Help to add identify place in a lwip code( for transmit only )where I can add 6 bytes of hsr tag...
Regards, Vrund On Thu 28 Mar, 2019, 12:37 AM goldsi...@gmx.de, <goldsi...@gmx.de> wrote: > Am 25.03.2019 um 10:52 schrieb vrnud: > > Hi, > > > > I am trying to impelement modbus over TCPIP. > > I am using FreeRTOS + lwip +STM32f4 (cube Mx generated code). > > Lwip version is 2.0.0. > > Freertos version 9.0.0. > > heap 4 is used. is it ok? > > > > TCPIP echo server application is used. > > while trying to connect from Modscan utility program stucks in > > mem.c file . function mem_malloc. > > What does "stuck" mean? Endless loop in mem_malloc? If so, that's an > indication that the list is broken, which in turn is an indication for > violating lwIP's threading rules. > > Regards, > Simon > > > /* Scan through the heap searching for a free block that is big > enough, > > modbus_connect_problem.pcap > > <http://lwip.100.n7.nabble.com/file/t2188/modbus_connect_problem.pcap> > > * beginning with the lowest free block. > > */ > > under this loop. > > for (ptr = (mem_size_t)((u8_t *)lfree - ram); ptr < MEM_SIZE_ALIGNED - > > size; > > ptr = ((struct mem *)(void *)&ram[ptr])->next) { > > } > > > > I have enabled the modbus_connect_problem.pcap > > <http://lwip.100.n7.nabble.com/file/t2188/modbus_connect_problem.pcap> > > CHECKSUM_GEN_IP 1 > > CHECKSUM_GEN_TCP 1 > > I have attached the wireshark report. > > > > > > Kindly guide. > > _______________________________________________ > lwip-users mailing list > lwip-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/lwip-users >
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