Re: [lwip-users] LWIP v2.0.0 hangs without Phy

[Gustavo Costa TAP]

Hi Jens,

thank you for your colaboration. Is it possible that you share if me your fix? I am trying not to reinvent the wheel. 

As I said to Simon, I am trying to use the LWIP_NETIF_LINK_CALLBACK and LWIP_NETIF_STATUS_CALLBACK functions to keep track of the Phy Link, but these functions never gets called, even if I disconnect the cable.

My demicode is as below:

#if LWIP_NETIF_STATUS_CALLBACK

void status_callback(void) {

LED_BLUE_TOGGLE();

}

#endif /* LWIP_NETIF_STATUS_CALLBACK */

#if LWIP_NETIF_LINK_CALLBACK

void link_callback(void) {

if (netif_is_link_up(&fsl_netif0)) {  //DES link up blink fast

LED_GREEN_ON();

dhcp_start(&fsl_netif0);

netif_set_up(&fsl_netif0);

} else {

LED_GREEN_OFF();

dhcp_stop(&fsl_netif0);

netif_set_down(&fsl_netif0);

}

}

#endif /* LWIP_NETIF_LINK_CALLBACK */

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

        PRINTF("TCP/IP initializing...\r\n");

tcpip_init(NULL, NULL);

PRINTF("TCP/IP initialized.\r\n");

xSemaphoreENET = xSemaphoreCreateBinary();

while (netif_add(&fsl_netif0, &fsl_netif0_ipaddr, &fsl_netif0_netmask,

&fsl_netif0_gw,

NULL, ethernetif_init, tcpip_input) == NULL) {

netif_remove(&fsl_netif0);

vTaskDelay(1000 / portTICK_PERIOD_MS);

}

WDOG_Refresh(WDOG);

netif_set_default(&fsl_netif0);

netif_set_up(&fsl_netif0);

#if LWIP_NETIF_STATUS_CALLBACK

netif_set_status_callback(&fsl_netif0, status_callback);

#endif /* LWIP_NETIF_STATUS_CALLBACK */

#if LWIP_NETIF_LINK_CALLBACK

netif_set_link_callback(&fsl_netif0, link_callback);

#endif /* LWIP_NETIF_LINK_CALLBACK */

err = dhcp_start(&fsl_netif0);

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

Thank you very much.

Best Regards,

 

Gustavo Costa Engenheiro Eletricista Departamento de P&D Tap Eletro Sistemas Ltda. (31) 3395-1180/9 8769-8593 address@hidden

2017-10-12 12:24 GMT-03:00 Jens Nielsen <address@hidden>:

Yes I fixed this particular problem in a driver recently, it was waiting for autonegotiation to complete. 6th parameter to netif_add is a function pointer to an init function in your code, that's where you'll find your bug.

On 2017-10-12 10:33, Simon Goldschmidt wrote:

When the "netif_add" api is called without the cable being actually plugged the function just hangs and my wdog barks.

Now this can't be an lwIP bug: lwIP knows nothing of phys. That is part of your netif driver, which probably needs fixing.

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