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AM2434: CPSW DUAL MAC Mode

Tomasz Krupski
Prodigy 200 points
Part Number: AM2434

Hi! 

SDK version: mcu_plus_sdk_am243x_08_05_00_24

Board: AM243x-LP, E3

I would like to modify the lwip cpsw example to work with two static IPs on the r5_0_0 core. One IP1 over RGMII1 and a second one IP2 over RGMII2 interface.

I have already got one static IP after I've uncommented following macro in lwipcfg.h file

/* #define USE_DHCP    0 */
/* #define USE_AUTOIP  0 */
How can I add a second IP?
In the next stage of the project I need to add a second core: r5_0_1:
-J18 (RGMII1) connects to r5_0_0 with IP1,
-J19 (RGMII2) connects to r5_0_1 with IP2. 
Is it possible? I case I am running out of memory I ordered the AM243x general purpose EVM with DDR4 but it is not delivered yet.
My application uses a standard Ethernet, so I am focusing on the cpsw exaples. 
  • 0
    TI__Mastermind 34537 points

    Hi  

    Thanks for bringing this to our attention. I have created an internal request for it.

    https://jira.itg.ti.com/browse/MCUSDK-10478

    Follow the below work around:

    In the file : mcu_plus_sdk_am243x_08_05_00_24\examples\networking\lwip\enet_lwip_cpsw\test.c

    1. Use attached test.c, replacing the existing one  /cfs-file/__key/communityserver-discussions-components-files/908/test.c

    2. Rebuild the example and you should be able to see the ip address assigned to both interface.

    =========================
    Enabling clocks!
    EnetAppUtils_reduceCoreMacAllocation: Reduced Mac Address Allocation for CoreId:1 From 4 To 2
    Mdio_open:282
    EnetPhy_bindDriver:1718
    EnetPhy_bindDriver:1718
    PHY 0 is alive
    PHY 3 is alive
    Host MAC address-0 : ac:1f:0f:84:0c:33
    Host MAC address-1 : 70:ff:76:1e:63:ee
    [LWIPIF_LWIP] NETIF INIT SUCCESS
    [LWIPIF_LWIP] NETIF INIT SUCCESS
    [LWIPIF_LWIP] Enet has been started successfully
    status_callback==UP, local interface IP is 192.168.1.1
    status_callback==UP, local interface IP is 192.168.1.2
    UDP server listening on port 5001
    Cpsw_handleLinkUp:1407

    Let me know if this helps.

    BR

    Nilabh A.

  • 0 in reply to Nilabh Anand
    Prodigy 200 points

    Thanks, it worked well!