CCS/TM4C1294NCPDT: TI-RTOS DHCP open failed and network close

Hi,

   Your UART message says it is removing static IP address. Have you configured the NDK to use static IP or you want to use DHCP? 

Hi Charles

I want to remove static ip and use dhcp.

Below is my code, remove static IP entry, and open DHCP.

void OpenDHCP(void)
{
	HANDLE hCfgIpAddr;
	HANDLE hCfgRT;
	HANDLE hCfg = CfgGetDefault();
	CfgGetEntry(hCfg_Record, CFGTAG_IPNET, 1, 1, &hCfgIpAddr);
	/* remove the current static IP entry */
	CfgRemoveEntry(hCfg_Record, hCfgIpAddr);
	CfgGetEntry(hCfg_Record, CFGTAG_ROUTE, 0, 1, &hCfgRT);
	CfgRemoveEntry(hCfg_Record, hCfgRT);

    CI_SERVICE_DHCPC dhcpc;
    UINT8 DHCP_OPTIONS[] = {
        DHCPOPT_SUBNET_MASK,
		//DHCPOPT_ROUTER,
    };

    CfgAddEntry(hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_HOSTNAME, 0,
    strlen(HostName), (unsigned char *)HostName, NULL);

    /* Specify DHCP Service on IF specified by "IfIdx" */
    bzero(&dhcpc, sizeof(dhcpc));
    dhcpc.cisargs.Mode   = 1;
    dhcpc.cisargs.IfIdx  = 1;
    dhcpc.cisargs.pCbSrv = &serviceReport;
    dhcpc.param.pOptions = DHCP_OPTIONS;
    dhcpc.param.len = 2;
    CfgAddEntry(hCfg, CFGTAG_SERVICE, CFGITEM_SERVICE_DHCPCLIENT, 0,
            sizeof(dhcpc), (UINT8 *)&dhcpc, 0);
    hCfg_Record = hCfg;
    IP_Update = 0;
    DHCP_Status = 1;
}

Hi Charles

Thanks for your reply.

In that thread seems configure static ip or dynamic in initialization.

My case is when the network in runtime.

I change ip static or dynamic.

And when using static ip for a while, change to dynamic.

And the network will be closed.(the close hook is in)

Is my code wrong?

Or other condition will let network close.

Hi Allen,

Can you attach a WireShark capture for this this part?

Allen_Tseng said:

DHCP Turn ON

Service Status: DHCPC : Enabled : Running : 000

Service Status: DHCPC : Enabled : Running : 000

Service Status: HTTP : Disabled : : 000

Service Status: DHCPC : Disabled : : 000

Hi Todd

Thanks for your reply.

I will try to use WireShark to capture for this part.

I find another problem.

Some time when DHCP turn off, network also will be closed.

------------------------------------------------------

UART message:

DHCP ON -> Turn OFF

IP_Address_Hook

Ip Removed

Service Status: DHCPC : Disabled : : 000

Set static ip address

IP_Address_Hook

IP_Added

Service Status: HTTP : Disabled : : 000

IP_Address_Hook

IP_Removed

Net_Stop_Hook

------------------------------------------------------

Is possible when i change ip staitc or dynamic, the network are process packet.

Or stack overflow, memory not enough.

My application using two tcp socket、one udp port、http server(with CGI)。

Udp is for mdns.

Allen

Allen,

Here's some information on how to determine whether you have a stack problem: https://training.ti.com/debugging-common-application-issues-ti-rtos

Todd

Hi Todd

I try to use ccs debug mode, and occur OOM.

I think turn ON/OFF DHCP is only a trigger.

Because run for a while, may occur OOM.

The console message is below:

Allen

Allen,

Take a look at the following pages to learn how memory is used in the NDK: https://processors.wiki.ti.com/index.php/TI-RTOS_Networking_Stack_Memory_Usage

I expect you'll need to increase the dynamic memory manager portion.

Todd