Re: [lwip-users] ppp problem

[yueyue papa]

The log is still not clear.  First step is simplify the process

1. Do not let ethenet interface working if PPP interface is not on.  (Current your PPP is not on yet.)

2. Enable PPP SIO log.

Your log did not provide enough PPP debug information. It is hard to know which kind of problem happen.   It is not easy to find PPP problem from your log. IP package is received, but it is hard to know  from PPP inteface or from net interface.

On Thu, May 23, 2013 at 11:17 PM, Ahmed Fayek <address@hidden> wrote:

I initialize the GPRS and send dialup ATD*99***1#
it respond correctly that is handled in this function GSM_PPP_ConnectProcess()

part of the debug log is attached.
the application is to work as a GPRS router that forward IP packets from ethernet and GPRS.

---

From: yueyue papa <address@hidden>
To: Ahmed Fayek <address@hidden>

Cc: Mailing list for lwIP users <address@hidden>
Sent: Thursday, May 23, 2013 4:37 PM

Subject: Re: [lwip-users] ppp problem

It is hard to know from your code. Provide the debug log with AT information.

On Thu, May 23, 2013 at 10:32 PM, Ahmed Fayek <address@hidden> wrote:

yes modem is initialized corectly and PPP channel opened.

I have this code:

          int connected = 0;
          int setup = 0;
          int pd;
          const char *username = "myuser";
          const char *password = "mypassword";

          /* initialise lwIP. This creates a new thread, tcpip_thread, that
           * communicates with the pppInputThread (see below) */
          tcpip_init(tcpip_init_done, &setup);
          /*
          while (!setup) {
              DelayMS(100);
          }
        */
          /* initialise PPP. This needs to be done only once after boot up, to
           * initialize global variables, etc. */
          pppInit();

//initialize modem and open ppp
#if GSM
    while(!GSM_PPP_ConnectProcess());
#endif

          pd = pppOverSerialOpen(0, linkStatusCB, &connected);

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From: yueyue papa <address@hidden>
To: Ahmed Fayek <address@hidden>; Mailing list for lwIP users <address@hidden>
Sent: Thursday, May 23, 2013 4:21 PM
Subject: Re: [lwip-users] ppp problem

whether you init your modem? 

e.g AT command for setup your module.   setup the APN,  whether the dial process success?

On Thu, May 23, 2013 at 10:18 PM, Ahmed Fayek <address@hidden> wrote:

Hi,

I try to run ppp to communicate with a gprs modem and I have this log:

pppMain: unit 536911872: Connecting
tcpip_thread: CALLBACK 20006808
pppStartCB: unit 536910992
ppp_set_xaccm[536910912]: outACCM=0 20009c40 20000a64 5
ppp_send_config[536910904]: outACCM=0 20009c38 0 5
ppp_recv_config[536910904]: inACCM=0 20009c38 0 5
lcp_lowerup: asyncmap=20009c68 0 20009c68 0
¨&<STX>: lowerup state 140968 (¨&<STX>) -> 536870912 (²<SOH>)
auth_reset: 536910832
lcp_addci: L opt=536910848 ERRORX
lcp_addci: L opt=536910848 ERRORX
lcp_addci: opt=536910848
lcp_addci: opt=536910848
pbuf_alloc(length=0)
pbuf_alloc: allocated pbuf 2000843c
pbuf_alloc(length=0) == 2000843c
pppWrite[536910800]: len=0

I don't know what is the problem that make it don't work.

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