Porting lwip1.3.0 network protocol stack to stm32

Port the lwip1.3.0 network protocol stack to stm32. The lwip network protocol stack has very low memory requirements and can be ported to non-operating system or operating system environments to implement TCP/IP network functions. Bare metal LWIP\\ARM technology touch screen configuration instructions.txt ........\\Release_Notes.html ........\\STM32 Shenzhou IV development board Ethernet direct connection with computer.pdf ........\\【Ethernet】STM32F107_ETH_LCD (Shenzhou IV 2.8-inch LCD).hex ........\\【Ethernet】STM32F107_ETH_LCD (Shenzhou IV 3.2-inch LCD).hex ........\\Shenzhou IV User Manual - Ethernet Experiment Introduction.pdf ........\\Shenzhou Series STM32 Development Board MDK Version Notes.txt ........\\_htmresc\\logo.bmp ........\\Utilities\\STM32_EVAL\\stm32_eval.c ........\\.........\\..........\\stm32_eval.h ........\\.........\\..........\\STM3210C_EVAL\\fonts.c ........\\.........\\..........\\.............\\fonts.h ........\\.........\\..........\\.............\\stm3210c_eval.h ........\\.........\\..........\\.............\\stm3210c_eval_ioe.c ........\\.........\\..........\\.............\\stm3210c_eval_ioe.h ........\\.........\\..........\\.............\\stm3210c_eval_lcd.c ........\\.........\\..........\\.............\\stm3210c_eval_lcd.h ........\\.........\\lwip-1.3.1\\CHANGELOG ........\\.........\\..........\\COPYING ........\\.........\\..........\\FILES ........\\.........\\..........\\README ........\\.........\\..........\\src\\FILES ........\\.........\\..........\\...\\netif\\etharp.c ........\\.........\\..........\\...\\.....\\ethernetif.c ........\\.........\\..........\\...\\.....\\FILES ........\\.........\\..........\\...\\.....\\loopif.c ........\\.........\\..........\\...\\.....\\slipif.c ........\\.........\\..........\\...\\.....\\ppp\\auth.c ........\\.........\\..........\\...\\.....\\...\\auth.h ........\\.........\\..........\\...\\.....\\...\\chap.c ........\\.........\\..........\\...\\.....\\...\\chap.h ........\\.........\\..........\\...\\.....\\...\\chpms.c ........\\.........\\..........\\...\\.....\\...\\chpms.h ........\\.........\\..........\\...\\.....\\...\\fsm.c ........\\.........\\..........\\...\\.....\\...\\fsm.h ........\\.........\\..........\\...\\.....\\...\\ipcp.c ........\\.........\\..........\\...\\.....\\...\\ipcp.h ........\\.........\\..........\\...\\.....\\...\\lcp.c ........\\.........\\..........\\...\\.....\\...\\lcp.h ........\\.........\\..........\\...\\.....\\...\\magic.c ........\\.........\\..........\\...\\.....\\...\\magic.h ........\\.........\\..........\\...\\.....\\...\\md5.c ........\\.........\\..........\\...\\.....\\...\\md5.h ........\\.........\\..........\\...\\.....\\...\\pap.c ........\\.........\\..........\\...\\.....\\...\\pap.h ........\\.........\\..........\\...\\.....\\...\\ppp.c ........\\.........\\..........\\...\\.....\\...\\ppp.h ........\\.........\\..........\\...\\.....\\...\\pppdebug.h ........\\.........\\..........\\...\\.....\\...\\ppp_oe.c ........\\.........\\..........\\...\\.....\\...\\randm.c ........\\.........\\..........\\...\\.....\\...\\randm.h ........\\.........\\..........\\...\\.....\\...\\vj.c ........\\.........\\..........\\...\\.....\\...\\vj.h ........\\.........\\..........\\...\\.....\\...\\vjbsdhdr.h ........\\.........\\..........\\...\\include\\netif\\etharp.h ........\\.........\\..........\\...\\.......\\.....\\loopif.h ........\\.........\\..........\\...\\.......\\.....\\ppp_oe.h ........\\.........\\..........\\...\\.......\\.....\\slipif.h

  ........\\.........\\..........\\...\\.......\\lwip\\api.h

  ........\\.........\\..........\\...\\.......\\....\\api_msg.h

  ........\\.........\\..........\\...\\.......\\....\\arch.h

  ........\\.........\\..........\\...\\.......\\....\\debug.h

  ........\\.........\\..........\\...\\.......\\....\\def.h

  ........\\.........\\..........\\...\\.......\\....\\dhcp.h

  ........\\.........\\..........\\...\\.......\\....\\dns.h

  ........\\.........\\..........\\...\\.......\\....\\err.h

  ........\\.........\\..........\\...\\.......\\....\\init.h

  ........\\.........\\..........\\...\\.......\\....\\mem.h

  ........\\.........\\..........\\...\\.......\\....\\memp.h

  ........\\.........\\..........\\...\\.......\\....\\memp_std.h

  ........\\.........\\..........\\...\\.......\\....\\netbuf.h

  ........\\.........\\..........\\...\\.......\\....\\netdb.h

  ........\\.........\\..........\\...\\.......\\....\\netif.h

  ........\\.........\\..........\\...\\.......\\....\\netifapi.h

  ........\\.........\\..........\\...\\.......\\....\\opt.h

  ........\\.........\\..........\\...\\.......\\....\\pbuf.h

  ........\\.........\\..........\\...\\.......\\....\\raw.h

  ........\\.........\\..........\\...\\.......\\....\\sio.h

  ........\\.........\\..........\\...\\.......\\....\\snmp.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_asn1.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_msg.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_structs.h

  ........\\.........\\..........\\...\\.......\\....\\sockets.h

  ........\\.........\\..........\\...\\.......\\....\\stats.h

  ........\\.........\\..........\\...\\.......\\....\\sys.h

  ........\\.........\\..........\\...\\.......\\....\\tcp.h

  ........\\.........\\..........\\...\\.......\\....\\tcpip.h

  ........\\.........\\..........\\...\\.......\\....\\udp.h

  ........\\.........\\..........\\...\\.......\\ipv6\\lwip\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\...4\\lwip\\autoip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\igmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet_chksum.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_frag.h\\.........\\..........\\...\\.......\\....\\mem.h

  ........\\.........\\..........\\...\\.......\\....\\memp.h

  ........\\.........\\..........\\...\\.......\\....\\memp_std.h

  ........\\.........\\..........\\...\\.......\\....\\netbuf.h

  ........\\.........\\..........\\...\\.......\\....\\netdb.h

  ........\\.........\\..........\\...\\.......\\....\\netif.h

  ........\\.........\\..........\\...\\.......\\....\\netifapi.h

  ........\\.........\\..........\\...\\.......\\....\\opt.h

  ........\\.........\\..........\\...\\.......\\....\\pbuf.h

  ........\\.........\\..........\\...\\.......\\....\\raw.h

  ........\\.........\\..........\\...\\.......\\....\\sio.h

  ........\\.........\\..........\\...\\.......\\....\\snmp.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_asn1.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_msg.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_structs.h

  ........\\.........\\..........\\...\\.......\\....\\sockets.h

  ........\\.........\\..........\\...\\.......\\....\\stats.h

  ........\\.........\\..........\\...\\.......\\....\\sys.h

  ........\\.........\\..........\\...\\.......\\....\\tcp.h

  ........\\.........\\..........\\...\\.......\\....\\tcpip.h

  ........\\.........\\..........\\...\\.......\\....\\udp.h

  ........\\.........\\..........\\...\\.......\\ipv6\\lwip\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\...4\\lwip\\autoip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\igmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet_chksum.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_frag.h\\.........\\..........\\...\\.......\\....\\mem.h

  ........\\.........\\..........\\...\\.......\\....\\memp.h

  ........\\.........\\..........\\...\\.......\\....\\memp_std.h

  ........\\.........\\..........\\...\\.......\\....\\netbuf.h

  ........\\.........\\..........\\...\\.......\\....\\netdb.h

  ........\\.........\\..........\\...\\.......\\....\\netif.h

  ........\\.........\\..........\\...\\.......\\....\\netifapi.h

  ........\\.........\\..........\\...\\.......\\....\\opt.h

  ........\\.........\\..........\\...\\.......\\....\\pbuf.h

  ........\\.........\\..........\\...\\.......\\....\\raw.h

  ........\\.........\\..........\\...\\.......\\....\\sio.h

  ........\\.........\\..........\\...\\.......\\....\\snmp.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_asn1.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_msg.h

  ........\\.........\\..........\\...\\.......\\....\\snmp_structs.h

  ........\\.........\\..........\\...\\.......\\....\\sockets.h

  ........\\.........\\..........\\...\\.......\\....\\stats.h

  ........\\.........\\..........\\...\\.......\\....\\sys.h

  ........\\.........\\..........\\...\\.......\\....\\tcp.h

  ........\\.........\\..........\\...\\.......\\....\\tcpip.h

  ........\\.........\\..........\\...\\.......\\....\\udp.h

  ........\\.........\\..........\\...\\.......\\ipv6\\lwip\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\...4\\lwip\\autoip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\igmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet_chksum.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_frag.h\\.......\\....\\tcp.h

  ........\\.........\\..........\\...\\.......\\....\\tcpip.h

  ........\\.........\\..........\\...\\.......\\....\\udp.h

  ........\\.........\\..........\\...\\.......\\ipv6\\lwip\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\...4\\lwip\\autoip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\igmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet_chksum.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_frag.h\\.......\\....\\tcp.h

  ........\\.........\\..........\\...\\.......\\....\\tcpip.h

  ........\\.........\\..........\\...\\.......\\....\\udp.h

  ........\\.........\\..........\\...\\.......\\ipv6\\lwip\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\...4\\lwip\\autoip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\icmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\igmp.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet.h

  ........\\.........\\..........\\...\\.......\\....\\....\\inet_chksum.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_addr.h

  ........\\.........\\..........\\...\\.......\\....\\....\\ip_frag.h