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Original question:

AM6442: IND-COMMS-SDK EtherCAT Beckhoff Slave Example -- am64x IEP configuration

AM6442: mcu+ sdk: lwip, activating hostname leads to Enet IF down and MAC Port Link down

Jakob Roll
Prodigy 70 points
Part Number: AM6442

Tool/software:

Hello,

as the title says I am working with the mcu+ sdk 09.02.00.50 and the https server example. 
Everything works as intended until I activate the option for LWIP_NETIF_HOSTNAME in opt.h.

The netif_set_up() function in App_setupNetif() sets the flag for netif up, but when calling the callback function to check this, the flags are all 0.

Can you help here?

Output without hostname:
==========================
CPSW HTTPS TCP
==========================
Enabling clocks!
EnetAppUtils_reduceCoreMacAllocation: Reduced Mac Address Allocation for CoreId:1 From 4 To 1
Mdio_open: MDIO Manual_Mode enabled
EnetPhy_bindDriver: PHY 1: OUI:080028 Model:23 Ver:01 <-> 'dp83867' : OK
PHY 1 is alive
Starting lwIP, local interface IP is dhcp-enabled
[LWIPIF_LWIP] NETIF INIT SUCCESS
Host MAC address-0 : xx:xx:xx:xx:xx:xx
Enet IF DOWN Event
[LWIPIF_LWIP] Enet has been started successfully
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex
MAC Port 1: link up
Network Link DOWN Event
Waiting for network UP ...
Waiting for network UP ...


With hostname:
==========================
CPSW HTTPS TCP
==========================
Enabling clocks!
EnetAppUtils_reduceCoreMacAllocation: Reduced Mac Address Allocation for CoreId:1 From 4 To 1
Mdio_open: MDIO Manual_Mode enabled
EnetPhy_bindDriver: PHY 1: OUI:080028 Model:23 Ver:01 <-> 'dp83867' : OK
PHY 1 is alive
Starting lwIP, local interface IP is dhcp-enabled
[LWIPIF_LWIP] NETIF INIT SUCCESS
Host MAC address-0 : xx:xx:xx:xx:xx:xx
Enet IF UP Event. Local interface IP:0.0.0.0
[LWIPIF_LWIP] Enet has been started successfully
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex
MAC Port 1: link up
Network Link UP Event
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Waiting for network UP ...
Enet IF UP Event. Local interface IP:192.168.xx.xx
Network is UP ...
22. 96s : CPU load = 3.49 %
27. 97s : CPU load = 3.54 %



Kind regards,
Jakob

  • 0
    TI__Mastermind 27350 points

    Hi Jakob,

    Thanks for your query.

    Jakob Roll said:
    I am working with the mcu+ sdk 09.02.00.50 and the https server example

    You are working on this example? C:\ti\mcu_plus_sdk_am64x_10_00_00_20\examples\networking\lwip\enet_cpsw_rawhttpserver\am64x-evm

    Jakob Roll said:
    Everything works as intended until I activate the option for LWIP_NETIF_HOSTNAME in opt.h.

    What is the use case that you are trying to achieve by activating this option?

    Regards

    Ashwani

  • 0 in reply to Ashwani Goel
    Prodigy 70 points

    Hi Ashwani,
    no it is the https example, C:\ti\mcu_plus_sdk\examples\networking\lwip\cpsw_lwip_https.
    I am working with the example to familiarize with the integration of the enet driver and the lwip stack to use it in another project. There I would like to set a host name. At the moment nothing more than that. Just by activating the option, with and without actually setting a host name, the netif and the network link are down. 

    Can you reproduce the problem, or is there something fundamental I miss? 

    Regards,
    Jakob

  • 0 in reply to Jakob Roll
    TI__Mastermind 27350 points
    Jakob Roll said:
    Can you reproduce the problem,

    I am working on this. Will keep you updating.

    Regards

    Ashwani

  • 0 in reply to Ashwani Goel
    TI__Mastermind 27350 points
    Jakob Roll said:
    There I would like to set a host name. At the moment nothing more than that. Just by activating the option, with and without actually setting a host name, the netif and the network link are down. 

    Can you share what exactly you change, may be a patch file for the project?

    Ashwani Goel said:
    C:\ti\mcu_plus_sdk_am64x_10_00_00_20\examples\networking\lwip\enet_cpsw_rawhttpserver\am64x-evm

    It will be easier for me to reproduce the isssue.

    Regards

    Ashwani

  • 0 in reply to Ashwani Goel
    Prodigy 70 points

    In mcu_plus_sdk\source\networking\lwip\lwip-stack\src\include\lwip\opt.h I only activated the option LWIP_NETIF_HOSTNAME.

    --- a/mcu_plus_sdk/source/networking/lwip/lwip-stack/src/include/lwip/opt.h
    +++ b/mcu_plus_sdk/source/networking/lwip/lwip-stack/src/include/lwip/opt.h
    @@ -1641,7 +1641,7 @@
    * field.
    */
    #if !defined LWIP_NETIF_HOSTNAME || defined __DOXYGEN__
    -#define LWIP_NETIF_HOSTNAME 0
    +#define LWIP_NETIF_HOSTNAME 1
    #endif

    /**

    The problem occurs with and without setting a hostname via netif_set_hostname().

    Regards,
    Jakob

  • 0 in reply to Jakob Roll
    TI__Mastermind 27350 points

    Thanks ,

    I will try this on my setup and update you.

    Regards

    Ashwani