Thank you for your answer. What do you mean by lwIP interrupt? where I can find it? I am also willing to know I should use udp_send() or udp_sendto() in that ISR.
On Tue, Oct 6, 2020 at 3:11 PM Jon Bean <jb...@beandigital.co.uk> wrote: > Hi Mohammad > > I had to do something similar on a TI MCU. I chose to send multiple > packets that were less than the MTU. Basically I called the transmit route > from the LWIP interrupt. Each time the interrupt was called it would send a > data packet that was not more than the MTU. I had some flags to know if I > still needed to keep sending data or if I can stop. This seemed to work OK > for my application. > > Regards > > Jon > On 06/10/2020 12:32, Mohammad Tavakoli wrote: > > I made a TCP server on STM32F407 using lwIP version 2.1.2 and it worked > fine. Now for some reasons I need to run a UDP server on the MCU. I tried > and it worked fine for data size below 1472 bytes. Yet the desired data > length is around 16KB to 20KB. > 1. I searched and found that IP_FRAG should be defined 1 to allow send > data over MTU size. It is enabled by default. I read from an email [1] that > IP_FRAG_MAX_MTU should be also changed to a proper value. However I cannot > realize where it is! > 2. Another approach employed by me is to send chopped data whose size are > below 1472 bytes in a for loop but the for loop only executes first time > and the MCU goes stop status. How I must send data in a for loop? > > [1] > http://lwip.100.n7.nabble.com/Sending-a-large-amount-of-data-using-UDP-td35933.html > > > _______________________________________________ > lwip-users mailing > listlwip-users@nongnu.orghttps://lists.nongnu.org/mailman/listinfo/lwip-users > > > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > Virus-free. > www.avast.com > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > <#m_-3639561188189728725_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > _______________________________________________ > lwip-users mailing list > lwip-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/lwip-users
_______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
