Sir, thank you for reply, In my code, firstly I use AT commands to activate ICMP, APN and connect. (I also activated ICMP on LWIP via STM32CubeMX)
Until I come to the step of creating PPPoS, I can set the static IP over AT commands and ping the IP. However, when I create and connect PPPoS on LwIP, ppp gets the IP again by the negotiation. It seems IP is established for now, with periodic sent messages "~y" between GSM module(Telit GL865) and MCU. However, when I try to ping the established PPPoS session, the message of "~y" is sent much more between GSM and MCU; which shows that pinging is triggerring something but, there is no return to the pings. It may be about netif as people talk about, or the anomally that PPPoS assigns to the network mask. I can share all of the codes if you welcome. -- Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
