This again suggests that the ST provided driver is flawed (which is very possible).
I have a transfer rate of around 10 Mbit/s with this window size, which is not great yet. In fact, I need more than this. Can you point me to some resources with regard to writing a driver/debugging it? Unfortunately, I have no experience in this field, which may make it hard. Thank you, Adrian -----Ursprüngliche Nachricht----- Von: lwip-users [mailto:lwip-users-bounces+adrian.figueroa=tu-dresden...@nongnu.org] Im Auftrag von goldsimon Gesendet: Thursday, September 14, 2017 4:14 PM An: Mailing list for lwIP users <lwip-users@nongnu.org> Betreff: Re: [lwip-users] ERR_MEM when sending large data, LWIP stats show no error Adrian Figueroa wrote:: >I have no idea why I have no packet loss with TCP_WND and TCP_SND_BUF >set to 2xTCP_MSS. Instead, I get rare ZeroWindow errors from my PC. Because you don't fill your DMA buffers in this case and as a result, you don't drop tx segments. Implementing a zero copy driver in lwip is, unfortunately, still not that easy. Simon _______________________________________________ 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
