[技术问答] M487JIDAE和IP101GR芯片，连接以太网成功一段时间就不行了，求助各位！！！！！！！！！！！

/*************************************************************************//**

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * @brief    This Ethernet sample tends to get a DHCP lease from DHCP

 *           server. And use 192.168.10.10 as IP address it failed to

 *           get a lease. After IP address configured, this sample can

 *           reply to PING packets.

 *

 *

 * [url=home.php?mod=space&uid=17282]@CopyRight[/url] (C) 2016 Nuvoton Technology Corp. All rights reserved.

*****************************************************************************/

#include <stdio.h>

#include "NuMicro.h"

#include "net.h"

#include "led.h"

#include "key.h"

// Our MAC address

uint8_t g_au8MacAddr[6] = {0x00, 0x00, 0x00, 0x59, 0x16, 0x88};

// Our IP address

uint8_t volatile g_au8IpAddr[4] = {0, 0, 0, 0};

uint8_t auPkt[1514];

uint32_t u32PktLen;



// Descriptor pointers holds current Tx and Rx used by IRQ handler here.

uint32_t u32CurrentTxDesc, u32CurrentRxDesc;



void TMR0_IRQHandler(void)

{

//    static unsigned char count = 0;



    //printf("%d sec\n", sec++);

    // clear timer interrupt flag

    TIMER_ClearIntFlag(TIMER0);

    PH0=!PH0;  

    PH1=!PH1;

    PH2=!PH2;

    printf("1s enter TIM interrupt\r\n");

//    __NOP();

}

/**

  * @brief  EMAC Tx interrupt handler.

  * @param  None

  * @return None

  */

void EMAC_TX_IRQHandler(void)

{

    // Clean up Tx resource occupied by previous sent packet(s)

    EMAC_SendPktDone();

}



/**

  * @brief  EMAC Rx interrupt handler.

  * @param  None

  * @return None

  */

void EMAC_RX_IRQHandler(void)

{

    int i=0;

//    while(1)

//    {

        printf("u32PktLen =%d\r\n",u32PktLen);

        // Check if there's any packets available

        if(EMAC_RecvPkt(auPkt, &u32PktLen) == 0)

            return;

            //break;

        // Process receive packet

        process_rx_packet(auPkt, u32PktLen);

        for(i=0;i<u32PktLen;i++)

        {

            if(auPkt[i]==192)

            {

                printf("IP address: %d.%d.%d.%d\n", auPkt[i], auPkt[i+1],auPkt[i+2], auPkt[i+3]);

            }

        }

        // Clean up Rx resource occupied by previous received packet

        EMAC_RecvPktDone();

//    }

}



void SYS_Init(void)

{



    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Set XT1_OUT(PF.2) and XT1_IN(PF.3) to input mode */

    PF->MODE &= ~(GPIO_MODE_MODE2_Msk | GPIO_MODE_MODE3_Msk);



    /* Enable External XTAL (4~24 MHz) */

    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);



    /* Waiting for 12MHz clock ready */

    CLK_WaitClockReady( CLK_STATUS_HXTSTB_Msk);



    /* Switch HCLK clock source to HXT */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HXT,CLK_CLKDIV0_HCLK(1));



    /* Set core clock as PLL_CLOCK from PLL */

    CLK_SetCoreClock(FREQ_192MHZ);



    /* Set both PCLK0 and PCLK1 as HCLK/2 */

    CLK->PCLKDIV = CLK_PCLKDIV_APB0DIV_DIV2 | CLK_PCLKDIV_APB1DIV_DIV2;



    /* Enable IP clock */

    CLK_EnableModuleClock(UART0_MODULE);

    CLK_EnableModuleClock(EMAC_MODULE);



    /* Select IP clock source */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HXT, CLK_CLKDIV0_UART0(1));



    // Configure MDC clock rate to HCLK / (127 + 1) = 1.5 MHz if system is running at 192 MHz

    CLK_SetModuleClock(EMAC_MODULE, 0, CLK_CLKDIV3_EMAC(127));



    /* Update System Core Clock */

    /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */

    SystemCoreClockUpdate();



    /* Set GPB multi-function pins for UART0 RXD and TXD */

    SYS->GPB_MFPH &= ~(SYS_GPB_MFPH_PB12MFP_Msk | SYS_GPB_MFPH_PB13MFP_Msk);

    SYS->GPB_MFPH |= (SYS_GPB_MFPH_PB12MFP_UART0_RXD | SYS_GPB_MFPH_PB13MFP_UART0_TXD);

    // Configure RMII pins

    SYS->GPA_MFPL |= SYS_GPA_MFPL_PA6MFP_EMAC_RMII_RXERR | SYS_GPA_MFPL_PA7MFP_EMAC_RMII_CRSDV;

    SYS->GPC_MFPL |= SYS_GPC_MFPL_PC6MFP_EMAC_RMII_RXD1 | SYS_GPC_MFPL_PC7MFP_EMAC_RMII_RXD0;

    SYS->GPC_MFPH |= SYS_GPC_MFPH_PC8MFP_EMAC_RMII_REFCLK;

    SYS->GPE_MFPH |= SYS_GPE_MFPH_PE8MFP_EMAC_RMII_MDC |

                     SYS_GPE_MFPH_PE9MFP_EMAC_RMII_MDIO |

                     SYS_GPE_MFPH_PE10MFP_EMAC_RMII_TXD0 |

                     SYS_GPE_MFPH_PE11MFP_EMAC_RMII_TXD1 |

                     SYS_GPE_MFPH_PE12MFP_EMAC_RMII_TXEN;



    // Enable high slew rate on all RMII TX output pins

    PE->SLEWCTL = (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN10_Pos) |

                  (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN11_Pos) |

                  (GPIO_SLEWCTL_HIGH << GPIO_SLEWCTL_HSREN12_Pos);



    /* Lock protected registers */

    SYS_LockReg();



}





// This sample application can response to ICMP ECHO packets (ping)

// IP address is configure with DHCP, but if a lease cannot be acquired, a static IP will be used.

int main(void)

{



    SYS_Init();

    UART_Open(UART0, 115200);

    Led_init();

    printf("led init \r\n");

    key_init();

    //TIM_init();



    // Select RMII interface by default

    EMAC_Open(g_au8MacAddr);

    printf("EMAC open macaddr seccused\r\n");

    // Init phy

    EMAC_PhyInit();



    NVIC_EnableIRQ(EMAC_TX_IRQn);

    NVIC_EnableIRQ(EMAC_RX_IRQn);



    EMAC_ENABLE_RX();

    EMAC_ENABLE_TX();

    printf("emaec enable rx dfksa \r\n");

    if (dhcp_start() < 0)

    {

        // Cannot get a DHCP lease, use static IP.

        printf("DHCP failed, use static IP 192.168.10.10\n");

        g_au8IpAddr[0] = 0xC0;

        g_au8IpAddr[1] = 0xA8;

        g_au8IpAddr[2] = 0x0A;

        g_au8IpAddr[3] = 0x0A;

    }

    

    while(1);



}





/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/