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Altera_Forum
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10 years ago

altera_avalon_tse.h and _TIMEOUT_THRESHOLD #defines

Hello,

We are using NIOS2 with uCOS2 and the NicheStack and need to be able to

run our embedded app even if we don't have a network connection.

We noticed with the below default altera_avalon_tse.h settings,

the processor hangs up and seems to hold interrupts causing the app

to have issues loading.

# define ALTERA_AUTONEG_TIMEOUT_THRESHOLD 250000# define ALTERA_CHECKLINK_TIMEOUT_THRESHOLD 1000000# define ALTERA_NOMDIO_TIMEOUT_THRESHOLD 1000000# define ALTERA_DISGIGA_TIMEOUT_THRESHOLD 5000000

I tried these settings and it allowed to progress without a network connection fine,

but this seems like overkill.

Is there another Altera# define or code block that would allow obtaining the IP in

a lower priority task/thread ?

# define ALTERA_AUTONEG_TIMEOUT_THRESHOLD 2500# define ALTERA_CHECKLINK_TIMEOUT_THRESHOLD 1000# define ALTERA_NOMDIO_TIMEOUT_THRESHOLD 10000# define ALTERA_DISGIGA_TIMEOUT_THRESHOLD 50000

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Is the below change an appropriate fix ?

    I found that I needed to change the below code in

    BSP\drivers\src\altera_avalon_tse.c

    in the alt_tse_phy_restart_an() function.

    Adding a 1 second sleep in this while loop allows background tasks (we use uCOS2) to have some cpu cycles. A timeout of 10 seconds would be sufficient.

    The iNiche network initialization (again initialization only) is also on a task as well.

    while(alt_tse_phy_rd_mdio_reg(pphy, TSE_PHY_MDIO_STATUS, TSE_PHY_MDIO_STATUS_AN_COMPLETE, 1) == 0 )

    {

    usleep(1000000); /* sleep for 1 second */

    /* change to time out after 10 seconds */

    if(timeout++ > 10 /*timeout_threshold*/) {

    tse_dprintf(4, "WARNING : PHY[%d.%d] - Auto-Negotiation FAILED\n", mac_group_index, mac_info_index);

    /* Restore previous MDIO address */

    alt_tse_phy_wr_mdio_addr(pphy, mdioadd_prev);

    return TSE_PHY_AN_NOT_COMPLETE;

    }

    }