On Tue, May 29, 2012 at 10:18 AM, lookwong <[email protected]> wrote: > I don't think lwip spports full duplex mode.
I do not know what you mean by full duplex, but LwIP works fine for example echoing data, so the problem is probably in application Regards, Krzysztof Wesołowski, tel. +48 721 337 238 http://www.rainlabs.pl > > > On Tue, May 22, 2012 at 12:36 PM, GICINDIA <[email protected]> wrote: >> >> >> Hello Kieran, >> >> Thanx alot for the reply. >> >> If no. of pbufs is the issue then, to resolve this problem can i make >> MEMP_NUM_PBUF = 32? >> >> But, i did not understand lwip data transmit logic fully, if possible can >> u >> explain it? so that i can be able to implement some other logic for buffer >> handling at serial side before writing data into pbufs. >> >> >> Regards, >> Asma. >> >> >> >> Kieran Mansley wrote: >> > >> > It looks to me like you have 16 pbufs, each of size 256 bytes. Your >> > TCP_WND is 2048, so you can have 2KB of data received and waiting for >> > your >> > application before the other end will stop sending. Your TCP_SND_BUF is >> > 6KB, so you can have that much sent by your application waiting to go >> > onto >> > the wire. In total, this makes 8KB of buffering, but you only have >> > enough >> > pbufs to hold 4KB (16 * 256). I think this is why you're running out. >> > >> > Kieran >> > _______________________________________________ >> > lwip-users mailing list >> > [email protected] >> > https://lists.nongnu.org/mailman/listinfo/lwip-users >> > >> > >> >> -- >> View this message in context: >> http://old.nabble.com/lwip-fails-for-full-duplex-communication-tp33862721p33886914.html >> Sent from the lwip-users mailing list archive at Nabble.com. >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> https://lists.nongnu.org/mailman/listinfo/lwip-users > > > > _______________________________________________ > lwip-users mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
