net_phy.c

从Luminary官方网站下载的LM3S6000系列的UCos+Tcp/IP的源码, 经本人稍微修改后可直接在IAR6.2下编译通过,里面包括了LM3S6000系列的所有外设UART, PWn....

* Description : Do link auto-negotiation
*
* Argument(s) : none.
*
* Return(s)   : none.
*
* Caller(s)   : NetNIC_PhyInit.
*
* Note(s)     : none.
*********************************************************************************************************
*/

void  NetNIC_PhyAutoNeg (void)
{
    CPU_INT16U   i;
    CPU_BOOLEAN  link;


    i    = LM3SNNNN_PHY_INIT_AUTO_NEG_RETRIES;
    link = NetNIC_PhyAutoNegState();

    while ((link != DEF_ON) && (i > 0)) {
        NetBSP_DlyMs(250);
        link = NetNIC_PhyAutoNegState();
        i--;
    }
}

/*
*********************************************************************************************************
*                                    NetNIC_PhyAutoNegState()
*
* Description : Returns state of auto-negotiation
*
* Argument(s) : none.
*
* Return(s)   : State of auto-negociation (DEF_OFF = not completed, DEF_ON = completed).
*
* Caller(s)   : NetNIC_PhyInit.
*
* Note(s)     : none.
*********************************************************************************************************
*/

CPU_BOOLEAN  NetNIC_PhyAutoNegState (void)
{
    NET_ERR     err;
    CPU_INT32U  reg_val;


    reg_val = NetNIC_PhyRegRd(0, PHY_MR01, &err);
    if ((reg_val & PHY_MR01_ANEGC) == PHY_MR01_ANEGC) {
        return (DEF_ON);
    } else {
        return (DEF_OFF);
    }
}

/*
*********************************************************************************************************
*                                     NetNIC_PhyLinkState()
*
* Description : Returns state of ethernet link.  This instance probe the LM3Snnnn's internal PHY.
*
* Argument(s) : none.
*
* Return(s)   : State of ethernet link (DEF_OFF = link down, DEF_ON = link up).
*
* Note(s)     : If any error is encountered while reading the PHY, this function
*               will return link state = DEF_OFF.
*********************************************************************************************************
*/


CPU_BOOLEAN  NetNIC_PhyLinkState (void)
{
    CPU_INT16U  reg_val;
    NET_ERR     err;


    reg_val = NetNIC_PhyRegRd(0, PHY_MR01, &err);

    if (err == NET_PHY_ERR_NONE) {

        if ((reg_val & PHY_MR01_LINK) != 0) {

            return (DEF_ON);
        } else {

            return (DEF_OFF);
        }

    } else {

        return (DEF_OFF);
    }
}

/*
*********************************************************************************************************
*                                     NetPHY_GetLinkSpeed()
*
* Description : Returns the speed of the current Ethernet link
*
* Argument(s) : none.
*
* Return(s)   : 0 = No Link, 10 = 10mbps, 100 = 100mbps
*
* Note(s)     : none.
*********************************************************************************************************
*/

CPU_INT32U  NetNIC_PhyLinkSpeed (void)
{
    CPU_INT16U  reg_val;
    NET_ERR     err;


    if (NetNIC_PhyLinkState() == DEF_OFF) {

        return (NET_PHY_SPD_0);

    } else {

        reg_val = NetNIC_PhyRegRd(0, PHY_MR00, &err);

        if (err == NET_PHY_ERR_NONE) {

            if ((reg_val & PHY_MR00_SPEEDSL) != 0) {


                return (NET_PHY_SPD_100);
            } else {

                return (NET_PHY_SPD_10);
            }
        } else {

            return (NET_PHY_SPD_0);
        }
    }
}

/*
*********************************************************************************************************
*                                     NetPHY_GetDuplex()
*
* Description : Returns the duplex mode of the current Ethernet link.  This instance probe the
*               LM3Snnnn's internal PHY.
*
* Argument(s) : none.
*
* Return(s)   : 0 = Unknown (Auto-Neg in progress), 1 = Half Duplex, 2 = Full Duplex
*
* Note(s)     : none.
*********************************************************************************************************
*/

CPU_INT32U  NetNIC_PhyLinkDuplex (void)
{
    CPU_INT16U  reg_val;
    NET_ERR     err;


    if (NetNIC_PhyLinkState() == DEF_OFF) {

        return (NET_PHY_DUPLEX_UNKNOWN);

    } else {

        reg_val = NetNIC_PhyRegRd(0, PHY_MR00, &err);

        if (err == NET_PHY_ERR_NONE) {

            if ((reg_val & PHY_MR00_DUPLEX) != 0) {


                return (NET_PHY_DUPLEX_FULL);
            } else {

                return (NET_PHY_DUPLEX_HALF);
            }
        } else {

            return (NET_PHY_DUPLEX_UNKNOWN);
        }
    }
}

/*
*********************************************************************************************************
*********************************************************************************************************
*                                    GLOBAL FUNCTIONS: PHY INTERRUPTS
*********************************************************************************************************
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                        NetNIC_ISR_Handler()
*
* Description : (1) Update NetNIC_ConnStatus according to link state
*
* Argument(s) : none.
*
* Return(s)   : none.
*********************************************************************************************************
*/

void  NetNIC_PhyISR_Handler (void)
{
    volatile  CPU_INT16U  reg_val;
              NET_ERR     err;


    NetNIC_ConnStatus = NetNIC_PhyLinkState();                          /* Set NetNIC_ConnStatus according to link state            */

    if (NetNIC_ConnStatus == DEF_ON) {
        NetNIC_LinkUp();
    } else {
        NetNIC_LinkDown();
    }

    reg_val = NetNIC_PhyRegRd(0, PHY_MR17, &err);                       /* Clear interrupts                                         */
}