RTOS/PROCESSOR-SDK-AM437X: EMAC example error

user5371084

Tool/software: TI-RTOS

I use the pdkProjectCreate.bat to create a example project named EMAC_BasicExample_idkAM437x_armBiosExampleProject, It can not run properly(idkevm board , pdk_am437x_1_0_4,ccsv6.2).

It show this on the debug port:

EMAC loopback test application initialization

SetPhyMode:000001e1 Auto:1, FD10:64, HD10:32, FD100:256, HD100:128, FD1000:0 LPBK:0

main: emac_open sucess

the program stop at function emac_check_loopback_status(0) in codes:

    if (emac_check_loopback_status(0) !=1)
    {
        UART_printf("Link not in loopback state, return error\n");
        return -1;
    }

I debug into this function, find out that it entering an infinite loop in this code:

    while (linkStatus == 0)
    {
        /* First read the BSR of the PHY */
        _ENETPHY_UserAccessRead((ENETPHY_Handle) &phyDev, ENETPHY_BSR, phy_addr, &val16);

        if(val16 & ENETPHY_LINK_STATUS)
        {
            linkStatus = 1;
        }
        app_delay(100);
        retries--;
    }

because val16 equal to 0 forever.

Please tell me where the problem is.

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

The RTOS team have been notified. They will respond here.

0 lding over 7 years ago in reply to Biser Gatchev-XID

TI__Guru* 95265 points

Hi,

Do you use the GEL to initialize the IDKAM437x A9 core before loading the test application? Also if you can try with the latest P-SDK 4.3 release ( pdk_am437x_1_0_10)? All those examples were tested before releasing so I don't expect they failed. Let me know.

Regards, Eric

0 user5371084 over 7 years ago in reply to lding

Expert 2215 points

OK,

I had found what is wrong. It because that I have wrong PHY address. Now it work correctly.

0 user5371084 over 7 years ago in reply to user5371084

Expert 2215 points

Now I can run the EMAC_BasicExample_evmAM437x_armBiosExampleProject correctly. but it just only drive the ethernet port 1, While there are two ethernet ports.If I want to use port 2 to test, how should I change?

the board is a little changed evmAM437x, pdk_am437x_1_0_4, CCSv6.2.

In the function EMAC_DRV_ERR_E emac_open(uint32_t port_num, EMAC_OPEN_CONFIG_INFO_T *p_config), does the function argument port_num correspond to the MAC port?

In program EMAC_BasicExample_evmAM437x_armBiosExampleProject, main_evmAM437x.c:

    if ((open_ret = emac_open(0, &open_cfg)) == EMAC_DRV_RESULT_OPEN_PORT_ERR)
    {
        UART_printf("main: emac_open failure: %d\n", open_ret);
    }
    else
        UART_printf("main: emac_open sucess\n");

if I want to test MAC port 2, should I chang the emac_open(0, &open_cfg) to emac_open(1, &open_cfg)? But I find that it will return faulse if I do this.

Therefore, I understand that this uint32_t port_num is a MAC peripheral with two PHY. am I right?

now I try to change the code line "open_cfg.phy_addr = 0; " to "open_cfg.phy_addr = 1; " . the "1" is the PHY address of the second port' PHY chip. but in function mac_check_loopback_status(1), it show "link status: up",and "Link not in loopback state“. This mean that the port 2 can not be init correctly with loop_back.

So, I have to debug into the funciton emac_open(0, &open_cfg), and find out that the open_cfg.phy_addr seem to not be used, is it really?

and meanwhile, there is a item in the structure EMAC_HwAttrs_V4 EMACInitCfg[1] :

    1,
    {
        {
            SOC_IPORT_REG,
            SOC_ISL1_REG,
            4U,
        },
        {
            SOC_IPORT_REG,
            SOC_ISL2_REG,
            1U,
        }
    }

the 1 in the first line should change to 2.

now, I can set the port 2 to be look_back.

But I have another question. How do I set the two ports with different MAC addresses and send and receive data from the two different ports?

zhuangbin

0 user5371084 over 7 years ago

Expert 2215 points

I had known the problem: it was a wrong phy_addr.

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RTOS/PROCESSOR-SDK-AM437X: EMAC example error