[参考译文] DP83826E：EtherCAT 输出端口链路检测问题

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1269529/dp83826e-ethercat-out-port-link-detection-problem

尊敬的 TI 团队：

我使用 AM2634和两个 DP83826E (输入/输出)设计了一个新的电路板。

新电路板的应用基于 MCU+SDK am263x 8.6.00.34控制卡的 EtherCAT 示例以及 Beckhoff SSC 演示。

我为两个 DP83826E 修改了该示例。 因为本示例将 DP83869和 DP83826E 用作两个 EtherCAT 端口。

我对 Beckhoff 器件使用"New Device"执行了一些测试。

测试案例1在1小时内正常工作。 但测试情况2出错了。

测试案例2包含一个 Beckhoff 主器件和两个"新器件"(DUT 1、DUT 2)。

测试案例2的问题是 DUT#1的 OUT 端口不与 DUT#2的输入端口保持连接。

有时"DUT #1"检测输出端口上的下一个器件、有时"DUT #1"会在输出端口上丢失下一个器件。 这种情况反复出现。

当我更改 DUT#1和 DUT#2之间的位置时，第一个节点输出(DUT#2 OUT)上发生同样的问题

[图1. 测试案例1网络配置]

[图2. 测试案例2网络配置]

我在"TwinCAT2 SystemManager"的在线视图上确认了此问题。 '图 3"是 测试案例2的在线视图。

[图3. 测试案例2的 TwinCAT 在线监测器]

这是 该应用的 DP83826的启动代码。  

MCU+SDK am263x 8.6.00.34具有适用于 DP83826E 的器件驱动程序。

我只需替换两个 DP83826E 的代码。

void tiesc_socParamsInit(bsp_params *bspInitParams)
{
    bsp_params_init(bspInitParams);
    bspInitParams->pruicss_handle = pruIcss1Handle;
    bspInitParams->interrupt_offset = tiesc_getArmInterruptOffset();
    bspInitParams->eeprom_read = tiesc_eepromRead;
    bspInitParams->eeprom_write = tiesc_eepromWrite;
    bspInitParams->spinlock_base_address = CSL_SPINLOCK0_BASE;
    bspInitParams->ethphy_init = tiesc_ethphyInit;
    bspInitParams->enhancedlink_enable = TIESC_MDIO_RX_LINK_ENABLE;
    bspInitParams->link0_polarity = TIESC_LINK0_POL; /*Polarity is high */
    bspInitParams->link1_polarity = TIESC_LINK1_POL; /*Polarity is low */
    bspInitParams->phy0_address = ((const ETHPHY_Attrs *)ETHPHY_getAttrs(CONFIG_ETHPHY0))->phyAddress;
    bspInitParams->phy1_address = ((const ETHPHY_Attrs *)ETHPHY_getAttrs(CONFIG_ETHPHY1))->phyAddress;
    bspInitParams->default_tiesc_eeprom = (const unsigned char *)(&(tiesc_eeprom));
    bspInitParams->eeprom_pointer_for_stack = &(pEEPROM);
}

void tiesc_ethphyInit(PRUICSS_Handle pruIcssHandle, uint8_t phy0addr,
                     uint8_t phy1addr, uint8_t enhancedlink_enable)
{
    uint32_t mdioBaseAddress = ((const ETHPHY_Attrs *)ETHPHY_getAttrs(CONFIG_ETHPHY0))->mdioBaseAddress;

    ETHPHY_DP83826E_LedSourceConfig ledConfig0;
    ETHPHY_DP83826E_LedBlinkRateConfig ledBlinkConfig0;
    ETHPHY_DP83826E_FastLinkDownDetectionConfig fastLinkDownDetConfig0;
    ETHPHY_DP83826E_LedSourceConfig ledConfig1;
    ETHPHY_DP83826E_LedBlinkRateConfig ledBlinkConfig1;
    ETHPHY_DP83826E_FastLinkDownDetectionConfig fastLinkDownDetConfig1;

    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_AUTO_MDIX, NULL, 0);
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_ENABLE_AUTO_MDIX, NULL, 0);

    if(TIESC_MDIO_RX_LINK_ENABLE == enhancedlink_enable)
    {
        /*TODO: Review these 2 calls*/
        ledConfig0.ledNum = ETHPHY_DP83826E_LED0;
        ledConfig0.mode = ETHPHY_DP83826E_LED_MODE_LINK_OK;
        ledConfig1.ledNum = ETHPHY_DP83826E_LED0;
        ledConfig1.mode = ETHPHY_DP83826E_LED_MODE_LINK_OK;

        ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig0, sizeof(ledConfig0));
        ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig1, sizeof(ledConfig1));
    }

    /* Enable Extended Full-Duplex */
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_EXTENDED_FD_ABILITY, NULL, 0);
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_ENABLE_EXTENDED_FD_ABILITY, NULL, 0);

    /* Enable Odd Nibble Detection */
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_ODD_NIBBLE_DETECTION, NULL, 0);
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_ENABLE_ODD_NIBBLE_DETECTION, NULL, 0);

    /* Enable detection of RXERR during IDLE */
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_ENHANCED_IPG_DETECTION, NULL, 0);
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_ENABLE_ENHANCED_IPG_DETECTION, NULL, 0);

    /* PHY pin LED_0 as link for fast link detection */
    ledConfig0.ledNum = ETHPHY_DP83826E_LED0;
    ledConfig0.mode = ETHPHY_DP83826E_LED_MODE_MII_LINK_100BT_FD;
    ledConfig1.ledNum = ETHPHY_DP83826E_LED0;
    ledConfig1.mode = ETHPHY_DP83826E_LED_MODE_MII_LINK_100BT_FD;
    //ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig0, sizeof(ledConfig0));
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig1, sizeof(ledConfig1));

    /*For DP83286E, RX_ER is a separate pin (not an LED pin like DP83869E). Configuring LED_1 for 10M speed indication. */
    ledConfig0.ledNum = ETHPHY_DP83826E_LED1;
    ledConfig0.mode = ETHPHY_DP83826E_LED_MODE_SPEED_10BT;
    ledConfig1.ledNum = ETHPHY_DP83826E_LED1;
    ledConfig1.mode = ETHPHY_DP83826E_LED_MODE_SPEED_10BT;
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig0, sizeof(ledConfig0));
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig1, sizeof(ledConfig1));

    /* PHY pin LED_2 as Rx/Tx Activity */
    ledConfig0.ledNum = ETHPHY_DP83826E_LED2;
    ledConfig0.mode = ETHPHY_DP83826E_LED_MODE_LINK_OK_AND_BLINK_ON_RX_TX;
    ledConfig1.ledNum = ETHPHY_DP83826E_LED2;
    ledConfig1.mode = ETHPHY_DP83826E_LED_MODE_LINK_OK_AND_BLINK_ON_RX_TX;
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig0, sizeof(ledConfig0));
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_CONFIGURE_LED_SOURCE, (void *)&ledConfig1, sizeof(ledConfig1));

    ledBlinkConfig0.rate = ETHPHY_DP83826E_LED_BLINK_RATE_200_MS;
    ledBlinkConfig1.rate = ETHPHY_DP83826E_LED_BLINK_RATE_200_MS;
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_CONFIGURE_LED_BLINK_RATE, (void *)&ledBlinkConfig0, sizeof(ledBlinkConfig0));
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_CONFIGURE_LED_BLINK_RATE, (void *)&ledBlinkConfig1, sizeof(ledBlinkConfig1));

    /* Enable fast link drop detection for EtherCAT
     * Bit3: Drop the link based on RX Error count of the MII interface, when a predefined number
     * of 32 RX Error occurrences in a 10us interval is reached, the link will be dropped
     * Bit0(not enabled by following lines): Drop the link based on Signal/Energy loss indication,
     * when the Energy detector indicates Energy Loss, the link will be dropped. Typical reaction
     * time is 10us. If it needs to be enabled, set fastLinkDownDetConfig.mode as
     * (ETHPHY_DP83869_FAST_LINKDOWN_MODE_ENERGY_LOST | ETHPHY_DP83869_FAST_LINKDOWN_MODE_RX_ERR)
     */
    fastLinkDownDetConfig0.mode = ETHPHY_DP83826E_FAST_LINKDOWN_MODE_RX_ERR;
    fastLinkDownDetConfig1.mode = ETHPHY_DP83826E_FAST_LINKDOWN_MODE_RX_ERR;

    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_FAST_LINK_DOWN_DETECTION, (void *)&fastLinkDownDetConfig0, sizeof(fastLinkDownDetConfig0));
    ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY1], ETHPHY_CMD_ENABLE_FAST_LINK_DOWN_DETECTION, (void *)&fastLinkDownDetConfig1, sizeof(fastLinkDownDetConfig1));

    if(enhancedlink_enable == 0)
    {
        MDIO_enableLinkInterrupt(mdioBaseAddress, 0, phy0addr, MDIO_LINKSEL_MDIO_MODE);
        MDIO_enableLinkInterrupt(mdioBaseAddress, 1, phy1addr, MDIO_LINKSEL_MDIO_MODE);
    }
    else
    {
        MDIO_enableLinkInterrupt(mdioBaseAddress, 0, phy0addr, MDIO_LINKSEL_MLINK_MODE);
        MDIO_enableLinkInterrupt(mdioBaseAddress, 1, phy1addr, MDIO_LINKSEL_MLINK_MODE);
    }

    /* Enable MII mode for DP83869 PHY */
    /* Operation mode of DP83826E is MII mode */
    //ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_ENABLE_MII, NULL, 0);

    /* Disable 1G advertisement and sof-reset to restart auto-negotiation in case 1G link was establised */
    /* But DP83826E is not use 1G by default */
    //ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_DISABLE_1000M_ADVERTISEMENT, NULL, 0);
    //ETHPHY_command(gEthPhyHandle[CONFIG_ETHPHY0], ETHPHY_CMD_SOFT_RESTART, NULL, 0);
}

下面是 EtherCAT 器件电路图。

[图4 DP83826E]

[图5 Phy0、Phy1 Strap ]

[表1 DP83826的自举配置]

[图6磁性元件和接头]

我的错是什么？ 您能帮我解决这个问题吗？