RM57 lwIP problem

Jason,

Look at this post: e2e.ti.com/.../301698

There's a file in lwIP that includes other C files -- I don't care for this much myself but I bet it's your problem.

When you import - you need to 'exclude project from build' on the .c files that are included by the 'top' .c file otherwise you'll get tons of duplicate definition errors as the C file will wind up getting compiled twice (once standalone, once through include).

The 'offending' file is:
<install>HALCoGen EMAC Driver with lwIP Demonstration\v00.03.00\lwip-1.4.1\ports\hdk\lwiplib.c

It includes a bunch of other C files --- and you need to then manually 'exclude' these same C files from your build or else the compiler will wind up compiling them twice.

This I think is done as a way to turn on/off features & protocols but it doesn't make the project very portable as it relies on build settings that you have to change in the GUI.

In the project view of CCS you can right click on files and folders and select "Exclude From Build' I think if you do that it will fix the issue. Not sure why it wasn't done when you imported. Maybe you didn't import as a "CCS Project" but some other way?

/*
** lwIP high-level API/Stack/IPV4/SNMP/Network Interface/PPP codes
*/
#include "src/api/api_lib.c"
#include "src/api/api_msg.c"
#include "src/api/err.c"
#include "src/api/netbuf.c"
#include "src/api/netdb.c"
#include "src/api/netifapi.c"
#include "src/api/tcpip.c"
#include "src/api/sockets.c"

#include "src/core/dhcp.c"
#include "src/core/dns.c"
#include "src/core/init.c"
#include "src/core/mem.c"
#include "src/core/memp.c"
#include "src/core/netif.c"
#include "src/core/pbuf.c"
#include "src/core/raw.c"
#include "src/core/stats.c"
#include "src/core/sys.c"
#include "src/core/tcp.c"
#include "src/core/tcp_in.c"
#include "src/core/tcp_out.c"
#include "src/core/udp.c"

#include "src/core/ipv4/autoip.c"
#include "src/core/ipv4/icmp.c"
#include "src/core/ipv4/igmp.c"
#include "src/core/ipv4/inet.c"
#include "src/core/ipv4/inet_chksum.c"
#include "src/core/ipv4/ip.c"
#include "src/core/ipv4/ip_addr.c"
#include "src/core/ipv4/ip_frag.c"

#include "src/core/snmp/asn1_dec.c"
#include "src/core/snmp/asn1_enc.c"
#include "src/core/snmp/mib2.c"
#include "src/core/snmp/mib_structs.c"
#include "src/core/snmp/msg_in.c"
#include "src/core/snmp/msg_out.c"

#include "src/netif/etharp.c"
#include "src/netif/loopif.c"

#include "src/netif/ppp/auth.c"
#include "src/netif/ppp/chap.c"
#include "src/netif/ppp/chpms.c"
#include "src/netif/ppp/fsm.c"
#include "src/netif/ppp/ipcp.c"
#include "src/netif/ppp/lcp.c"
#include "src/netif/ppp/magic.c"
#include "src/netif/ppp/md5.c"
#include "src/netif/ppp/pap.c"
#include "src/netif/ppp/ppp.c"
#include "src/netif/ppp/ppp_oe.c"
#include "src/netif/ppp/randm.c"
#include "src/netif/ppp/vj.c"

/*
** HDK-specific lwIP interface/porting layer code.
*/
#include "ports/hdk/perf.c"
#include "ports/hdk/sys_arch.c"
#include "ports/hdk/netif/hdkif.c"
#include "locator.c"