RTCS link detection

vines — Wed, 14 Nov 2012 03:53:01 GMT

Hi all,

I have been working with K60 platform with my own hardware. Sending and Receiving to/from my hardware is working fine. I can communicate to my utility software without a problem. However, detection of whether the link is up or down is not working.

Here is the scenario:

1. connect the hardware ethernet to network

2. Opens Utility SW and connect to the hardware (successful)

3. Sends something from SW to HW and vice versa (successful - proves that initialization of network parameters e.g. IP, submask, gateway are succesful - I can see acknowledge packets from my utility SW)

4. Try to pull out the ethernet cable from HW (now this is the problem)

The system should be able to detect that the system lost the ethernet link. I have tried a few things like polling, pinging, Even sending when the link is down. But the system won't give back an error message base on my debug.It always returns OK message.

Here is a portion of the simplified code.I didn't copy some of the things that are I think not essential to this question.

//From tower default

#define BSP_DEFAULT_ENET_DEVICE 0

#define BSP_DEFAULT_ENET_OUI { 0x00, 0x00, 0x5E, 0, 0, 0 }

#define AF_INET 1

#define INADDR_ANY 0

#define ENET_DEVICE BSP_DEFAULT_ENET_DEVICE

//Own port

#define TCP_PORT 20000

typedef _enet_address net_addr;

u32 gChildHandle;

static IPCFG_IP_ADDRESS_DATA ipDataGlobal;

bool gTcpLinkUp = false;

void HalInitRtcs(void)

{

u32 error;

net_addr enet_address = BSP_DEFAULT_ENET_OUI;

error = RTCS_create();

if (error)

os_task_block();

if ((ipcfg_init_device(ENET_DEVICE, enet_address)) != IPCFG_OK)

os_task_block();

#ifdef ENET_DEVICE

ENET_get_mac_address(ENET_DEVICE, ipDataGlobal.ip, enet_address);

#endif

if ((ipcfg_bind_staticip(ENET_DEVICE, &ipDataGlobal)) != IPCFG_OK)

os_task_block();

}

void HalSockInit(u32 *sock, sockaddr_in *sockaddrlocal)

{

u32 error;

sockaddrlocal->sin_family = AF_INET;

sockaddrlocal->sin_port = TCP_PORT;

sockaddrlocal->sin_addr.s_addr = INADDR_ANY;

*sock = socket(PF_INET, SOCK_STREAM, 0);

if (*sock == RTCS_SOCKET_ERROR)

os_task_block();

error = bind(*sock, sockaddrlocal, sizeof(sockaddr_in));

if (error != RTCS_OK)

os_task_block();

}

void HalNicInitTask(u32 dummy)

{

u32 error;

sockaddr_in gPeerAddr;

u16 gPeerLen;

sockaddr_in gLocalAddr;

u32 gSock;

u32 opt_length = sizeof(u32);

u32 opt_value = FALSE;

u32 sock, sockMonitor;

//do some mutex init didn't copy this portion

HalInitRtcs();

HalSockInit(&gSock, &gLocalAddr);

while (TRUE)

{

if (listen(gSock, 0) == RTCS_OK)

{

gPeerLen = sizeof(gPeerAddr);

if ((gChildHandle = accept(gSock, &gPeerAddr, &gPeerLen)) != RTCS_SOCKET_ERROR)

{

//both values with no effect to send() return value

//opt_value = TRUE;

opt_value = FALSE;

error = setsockopt(gChildHandle, SOL_TCP, OPT_RECEIVE_NOWAIT, &opt_value,1);

//no effect to poll

//opt_value = 1;

//error = setsockopt(gChildHandle, SOL_TCP, OPT_KEEPALIVE, &opt_value, 1);

if (error == RTCS_OK)

{

if (gChildHandle != RTCS_SOCKET_ERROR)

{

os_time_delay(100);

gTcpLinkUp = true;

ipcfg_task_create(8, 1000);

while (gTcpLinkUp)

{

u32 timeout=1000;

boolean testBit=0;

if ((testBit =ipcfg_task_poll()) == false)

gTcpLinkUp = false;//it won't enter this line

if ((error = RTCS_ping(ipDataGlobal.ip,&timeout,0)) != RTCS_OK)

gTcpLinkUp = false;//it won't enter this line

if ((testBit = ipcfg_get_link_active(BSP_DEFAULT_ENET_DEVICE)) == FALSE)

gTcpLinkUp = false;//it won't enter this line

os_time_delay(100);

}

ipcfg_task_destroy(TRUE);

shutdown(gChildHandle, FLAG_CLOSE_TX);

shutdown(gSock, FLAG_CLOSE_TX);

HalSockInit(&gSock, &gLocalAddr); // reinit socket after shutdown

}

else

{

shutdown(gChildHandle, FLAG_CLOSE_TX);

shutdown(gSock, FLAG_CLOSE_TX);

HalSockInit(&gSock, &gLocalAddr); // reinit socket after shutdown

}

os_time_delay(100);

}

os_time_delay(10);

}

from a different task i tried calling the below line when I remove the ethernet cable from the HW. Still the send returns the previous datalen or not an error.

error = send(gChildHandle, TxDataTcp, TxDataLenTcp, 0);

if (error == RTCS_ERROR || error != TxDataLenTcp)

gTcpLinkUp = false;//it won't enter this line

My BSP Userconfig.h lines are:

#define RTCSCFG_ENABLE_ICMP	1
#define RTCSCFG_ENABLE_UDP	1
#define RTCSCFG_ENABLE_TCP	1
#define RTCSCFG_ENABLE_STATS	1

#define RTCSCFG_ENABLE_GATEWAYS 1

#define FTPDCFG_USES_MFS	1
#define RTCSCFG_ENABLE_SNMP	0

#define TELNETDCFG_NOWAIT

FALSE

#define MQX_TASK_DESTRUCTION

#define HTTPDCFG_POLL_MODE	0
#define HTTPDCFG_STATIC_TASKS	0

#define HTTPDCFG_DYNAMIC_TASKS 1

Thanks in advance for the help.

Re: RTCS link detection

vines — Thu, 15 Nov 2012 15:49:18 GMT

By the way I am using MQX 3.8. Appreciate any help. Thank you.

Re: RTCS link detection

mohwaqas12 — Fri, 16 Nov 2012 11:44:09 GMT

I had the similar problem , i wanted to detect cable plugged/unplugged using ipcfg_get_link_active(IPCFG_default_enet_device) , but i was unable to do it , until recently some thread here suggested me that i verify my phy hardware.So i checked for it, hopefully in your case too, it might be some software issue, it should be able to detect the change which i was unable to get and i always used to get status up .

Regards

Re: RTCS link detection

vines — Fri, 16 Nov 2012 12:45:54 GMT

Yes it was my phy that is causing the problem. I found out this morning my time. I used the same program with tower and it works. Anyway thanks for the help.

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