OMAP-L137

Mariana, Thanks I will check it out

Hi,

I have an evm omap l137 and I want use It's ethernet but when i run  emac_loopback example it print the following in stdout:

"01  Testing Ethernet RMII loopback...
    Waiting for link...
    Link Detected
PHY1[0]  = 3120
PHY1[1]  = 782c
PHY2[0]  = 3120
PHY2[1]  = 782c

FAIL... error code 3... quitting"

this errors com from this codes:

  " if ( ( status = EMAC_FRAME64 ) != 2 )           // Check # of 64 byte frames  
        errors++;
    EMAC_FRAME64 = status;
   
    if ( ( status = EMAC_FRAME128T255 ) != 2 )      // Check # of 128-255 byte frames
          errors++;
    EMAC_FRAME128T255 = status;

    if ( ( status = EMAC_RXGOODFRAMES ) != 2 )      // Check # of Good RX frames        
           errors++;"

what should I do now? why in this example (specially in above codes) you check  some registers with 2?

Tahereh Vaezi.

Tahereh

I just tried the same example from the Spectrum Digital Board support library package, it seems to run fine.

Are you  sure your cross-over cable is working correctly to test the loopback?

I also let the gel file run through initializing everything (PLL, clocks etc), I am assuming you do the same?

Do you have an additional OMAPL137 board that could test and reproduce the failure, just to make sure that your existing board does not have any issue?

Regards

Mukul

Hi Mukul,

I have 2 boards and both give same response. let me know if I need any external devices or I should change anything in the codes. my cross cable have tested and there isn't any problem .in addition the cable in the packet was straight  and I use my own cross cable. at first I connected P9 and P10 together and the other time I connect the board to the pc but the response didn't change!

Regards.

Tahereh Vaezi.

Hi all,

i find my problem and now this project work without any error .

thanks

Thanks for the update. It should be noted that for the loopback test, P9 to P10 is not what needs to be looped back. You essentially need a cross over cable for P9 to test Spectrum Digital BSL loopback example.

Regards

Mukul