[BSP]NUC472 增加网络驱动

8 files changed, 1054 insertions, 22 deletions

diff --git a/bsp/nuvoton_nuc472/Libraries/StdDriver/src/sys.c b/bsp/nuvoton_nuc472/Libraries/StdDriver/src/sys_.c
index ec6c2410f4..ec6c2410f4 100644
--- a/bsp/nuvoton_nuc472/Libraries/StdDriver/src/sys.c
+++ b/bsp/nuvoton_nuc472/Libraries/StdDriver/src/sys_.c
diff --git a/bsp/nuvoton_nuc472/applications/application.c b/bsp/nuvoton_nuc472/applications/application.c
index f7948001c7..5ab3c31df4 100644
--- a/bsp/nuvoton_nuc472/applications/application.c
+++ b/bsp/nuvoton_nuc472/applications/application.c
@@ -15,7 +15,14 @@
 
 int main(void)
 {
-    while(1){
+#ifdef RT_USING_LWIP
+    /* initialize eth interface */
+    extern void rt_hw_nuc472_emac_init(void);
+    rt_hw_nuc472_emac_init();
+#endif /* RT_USING_LWIP */
+  
+    while(1)
+    {
         rt_thread_delay(RT_TICK_PER_SECOND);
     }
 }
diff --git a/bsp/nuvoton_nuc472/drivers/nuc472_eth.c b/bsp/nuvoton_nuc472/drivers/nuc472_eth.c
new file mode 100644
index 0000000000..de9f32eedd
--- /dev/null
+++ b/bsp/nuvoton_nuc472/drivers/nuc472_eth.c
@@ -0,0 +1,519 @@
+/*
+ * Copyright (c) 2013 Nuvoton Technology Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Description:   NUC472 MAC driver source file
+ */
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_LWIP
+#include <rtthread.h>
+#include "nuc472_eth.h"
+#include <netif/ethernetif.h>
+#include <netif/etharp.h>
+#include <lwip/icmp.h>
+#include "lwipopts.h"
+
+#define ETH_TRIGGER_RX()    EMAC->RXST = 0
+#define ETH_TRIGGER_TX()    EMAC->TXST = 0
+#define ETH_ENABLE_TX()     EMAC->CTL |= EMAC_CTL_TXON
+#define ETH_ENABLE_RX()     EMAC->CTL |= EMAC_CTL_RXON
+#define ETH_DISABLE_TX()    EMAC->CTL &= ~EMAC_CTL_TXON
+#define ETH_DISABLE_RX()    EMAC->CTL &= ~EMAC_CTL_RXON
+   
+rt_uint8_t ethaddr[] = {0x00, 0x00, 0x00, 0x59, 0x16, 0x88};
+
+struct rt_nuc472_emac
+{
+    struct eth_device parent;
+
+    EMAC_T *emac_base;
+
+    rt_uint8_t dev_addr[6];
+    struct eth_descriptor volatile *cur_tx_desc_ptr, *cur_rx_desc_ptr, *fin_tx_desc_ptr;
+
+    struct eth_descriptor rx_desc[RX_DESCRIPTOR_NUM];
+    struct eth_descriptor tx_desc[TX_DESCRIPTOR_NUM];
+    rt_uint8_t rx_buf[RX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE];
+    rt_uint8_t tx_buf[TX_DESCRIPTOR_NUM][PACKET_BUFFER_SIZE];      
+};
+typedef struct rt_nuc472_emac* rt_nuc472_emac_t;
+struct rt_nuc472_emac nuc472_emac_device;
+
+static void mdio_write(rt_nuc472_emac_t emac, rt_uint8_t addr, rt_uint8_t reg, rt_uint16_t val)
+{
+    EMAC_T *emac_base = emac->emac_base;
+
+    emac_base->MIIMDAT = val;
+    emac_base->MIIMCTL = (addr << EMAC_MIIMCTL_PHYADDR_Pos) | reg | EMAC_MIIMCTL_BUSY_Msk | EMAC_MIIMCTL_WRITE_Msk | EMAC_MIIMCTL_MDCON_Msk;
+
+    while (emac_base->MIIMCTL & EMAC_MIIMCTL_BUSY_Msk);
+
+}
+
+static rt_uint16_t mdio_read(rt_nuc472_emac_t emac, rt_uint8_t addr, rt_uint8_t reg)
+{
+    EMAC_T *emac_base = emac->emac_base;
+
+    emac_base->MIIMCTL = (addr << EMAC_MIIMCTL_PHYADDR_Pos) | reg | EMAC_MIIMCTL_BUSY_Msk | EMAC_MIIMCTL_MDCON_Msk;
+    while (emac_base->MIIMCTL & EMAC_MIIMCTL_BUSY_Msk);
+
+    return(emac_base->MIIMDAT);
+}
+
+static int reset_phy(rt_nuc472_emac_t emac)
+{
+    rt_uint16_t reg;
+    rt_uint32_t delay;
+    EMAC_T *emac_base = emac->emac_base;
+
+    mdio_write(emac, CONFIG_PHY_ADDR, MII_BMCR, BMCR_RESET);
+
+    delay = 2000;
+    while(delay-- > 0) 
+    {
+        if((mdio_read(emac, CONFIG_PHY_ADDR, MII_BMCR) & BMCR_RESET) == 0)
+            break;
+    }
+
+    if(delay == 0) 
+    {
+        rt_kprintf("Reset phy failed\n");
+        return(-1);
+    }
+
+    mdio_write(emac, CONFIG_PHY_ADDR, MII_ADVERTISE, ADVERTISE_CSMA |
+               ADVERTISE_10HALF |
+               ADVERTISE_10FULL |
+               ADVERTISE_100HALF |
+               ADVERTISE_100FULL);
+
+    reg = mdio_read(emac, CONFIG_PHY_ADDR, MII_BMCR);
+    mdio_write(emac, CONFIG_PHY_ADDR, MII_BMCR, reg | BMCR_ANRESTART);
+
+    delay = 200000;
+    while(delay-- > 0) 
+    {
+        if((mdio_read(emac, CONFIG_PHY_ADDR, MII_BMSR) & (BMSR_ANEGCOMPLETE | BMSR_LSTATUS))
+                == (BMSR_ANEGCOMPLETE | BMSR_LSTATUS))
+            break;
+    }
+
+    if(delay == 0) 
+    {
+        rt_kprintf("AN failed. Set to 100 FULL\n");
+        emac_base->CTL |= (EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);
+        return(-1);
+    } 
+    else 
+    {
+        reg = mdio_read(emac, CONFIG_PHY_ADDR, MII_LPA);
+
+        if(reg & ADVERTISE_100FULL) 
+        {
+            rt_kprintf("100 full\n");
+            emac_base->CTL |= (EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);
+        }
+        else if(reg & ADVERTISE_100HALF) 
+        {
+            rt_kprintf("100 half\n");
+            emac_base->CTL = (EMAC->CTL & ~EMAC_CTL_FUDUP_Msk) | EMAC_CTL_OPMODE_Msk;
+        } 
+        else if(reg & ADVERTISE_10FULL) 
+        {
+            rt_kprintf("10 full\n");
+            emac_base->CTL = (EMAC->CTL & ~EMAC_CTL_OPMODE_Msk) | EMAC_CTL_FUDUP_Msk;
+        } else 
+        {
+            rt_kprintf("10 half\n");
+            emac_base->CTL &= ~(EMAC_CTL_OPMODE_Msk | EMAC_CTL_FUDUP_Msk);
+        }
+    }
+
+    return(0);
+}
+
+static void init_tx_desc(rt_nuc472_emac_t emac)
+{
+    EMAC_T *emac_base = emac->emac_base;
+    rt_uint32_t i;
+
+    emac->cur_tx_desc_ptr = emac->fin_tx_desc_ptr = &emac->tx_desc[0];
+
+    for(i = 0; i < TX_DESCRIPTOR_NUM; i++) 
+    {
+        emac->tx_desc[i].status1 = TXFD_PADEN | TXFD_CRCAPP | TXFD_INTEN;
+        emac->tx_desc[i].buf = &emac->tx_buf[i][0];
+        emac->tx_desc[i].status2 = 0;
+        emac->tx_desc[i].next = &emac->tx_desc[(i + 1) % TX_DESCRIPTOR_NUM];
+    }
+    emac_base->TXDSA = (unsigned int)&emac->tx_desc[0];
+    return;
+}
+
+static void init_rx_desc(rt_nuc472_emac_t emac)
+{
+    EMAC_T *emac_base = emac->emac_base;
+    rt_uint32_t i;
+
+    emac->cur_rx_desc_ptr = &emac->rx_desc[0];
+
+    for(i = 0; i < RX_DESCRIPTOR_NUM; i++)
+    {
+        emac->rx_desc[i].status1 = OWNERSHIP_EMAC;
+        emac->rx_desc[i].buf = &emac->rx_buf[i][0];
+        emac->rx_desc[i].status2 = 0;
+        emac->rx_desc[i].next = &emac->rx_desc[(i + 1) % TX_DESCRIPTOR_NUM];
+    }
+    emac_base->RXDSA = (unsigned int)&emac->rx_desc[0];
+    return;
+}
+
+static void set_mac_addr(rt_nuc472_emac_t emac, rt_uint8_t *addr)
+{
+    EMAC_T *emac_base = emac->emac_base;
+
+    emac_base->CAM0M = (addr[0] << 24) |
+                  (addr[1] << 16) |
+                  (addr[2] << 8) |
+                  addr[3];
+
+    emac_base->CAM0L = (addr[4] << 24) |
+                  (addr[5] << 16);
+
+    emac_base->CAMCTL = EMAC_CAMCTL_CMPEN_Msk | EMAC_CAMCTL_AMP_Msk | EMAC_CAMCTL_ABP_Msk;
+    emac_base->CAMEN = 1;    // Enable CAM entry 0
+}
+
+void EMAC_init(rt_nuc472_emac_t emac, rt_uint8_t *mac_addr)
+{
+    RT_ASSERT(emac->dev_addr != RT_NULL);
+    EMAC_T *emac_base = emac->emac_base;
+
+    CLK_EnableModuleClock(EMAC_MODULE);
+
+    // Configure MDC clock rate to HCLK / (127 + 1) = 656 kHz if system is running at 84 MHz
+    CLK_SetModuleClock(EMAC_MODULE, 0, CLK_CLKDIV3_EMAC(127));
+
+    // Configure RMII pins
+    SYS->GPC_MFPL = SYS_GPC_MFPL_PC0MFP_EMAC_REFCLK |
+                    SYS_GPC_MFPL_PC1MFP_EMAC_MII_RXERR |
+                    SYS_GPC_MFPL_PC2MFP_EMAC_MII_RXDV |
+                    SYS_GPC_MFPL_PC3MFP_EMAC_MII_RXD1 |
+                    SYS_GPC_MFPL_PC4MFP_EMAC_MII_RXD0 |
+                    SYS_GPC_MFPL_PC6MFP_EMAC_MII_TXD0 |
+                    SYS_GPC_MFPL_PC7MFP_EMAC_MII_TXD1;
+
+    SYS->GPC_MFPH = SYS_GPC_MFPH_PC8MFP_EMAC_MII_TXEN;
+    // Enable high slew rate on all RMII pins
+    PC->SLEWCTL |= 0x1DF;
+
+    // Configure MDC, MDIO at PB14 & PB15
+    SYS->GPB_MFPH = SYS_GPB_MFPH_PB14MFP_EMAC_MII_MDC | SYS_GPB_MFPH_PB15MFP_EMAC_MII_MDIO;
+  
+    // Reset MAC
+    emac_base->CTL = EMAC_CTL_RST_Msk;
+
+    init_tx_desc(emac);
+    init_rx_desc(emac);
+
+    set_mac_addr(emac, mac_addr);  // need to reconfigure hardware address 'cos we just RESET emc...
+    reset_phy(emac);
+
+    emac_base->CTL |= EMAC_CTL_STRIPCRC_Msk | EMAC_CTL_RXON_Msk | EMAC_CTL_TXON_Msk | EMAC_CTL_RMIIEN_Msk | EMAC_CTL_RMIIRXCTL_Msk;
+    emac_base->INTEN |= EMAC_INTEN_RXIEN_Msk |
+                   EMAC_INTEN_RXGDIEN_Msk |
+                   EMAC_INTEN_RDUIEN_Msk |
+                   EMAC_INTEN_RXBEIEN_Msk |
+                   EMAC_INTEN_TXIEN_Msk |
+                   EMAC_INTEN_TXABTIEN_Msk |
+                   EMAC_INTEN_TXCPIEN_Msk |
+                   EMAC_INTEN_TXBEIEN_Msk;
+    emac_base->RXST = 0;  // trigger Rx
+    
+    //NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
+    NVIC_SetPriority(EMAC_TX_IRQn, 0);
+    NVIC_EnableIRQ(EMAC_TX_IRQn);
+    NVIC_SetPriority(EMAC_RX_IRQn, 1);
+    NVIC_EnableIRQ(EMAC_RX_IRQn);
+}
+
+void  ETH_halt(rt_nuc472_emac_t emac)
+{
+    EMAC_T *emac_base = emac->emac_base;
+
+    emac_base->CTL &= ~(EMAC_CTL_RXON_Msk | EMAC_CTL_TXON_Msk);
+}
+
+void emac_emac_done(rt_nuc472_emac_t emac)
+{
+    EMAC_T *emac_base = emac->emac_base;
+    unsigned int status;
+
+    status = emac_base->INTSTS & 0xFFFF0000;
+    emac_base->INTSTS = status;
+    if(status & EMAC_INTSTS_TSALMIF_Msk)
+    {
+        // TODO: time stamp alarm. write me!!
+    }
+    if(status & EMAC_INTSTS_TXBEIF_Msk) 
+    {
+        // Shouldn't goes here, unless descriptor corrupted
+        return;
+    }
+}
+
+rt_uint8_t *emac_get_tx_buf(rt_nuc472_emac_t emac)
+{
+    if(emac->cur_tx_desc_ptr->status1 & OWNERSHIP_EMAC)
+    {
+        return(RT_NULL);
+    }
+    else
+    {
+        return(emac->cur_tx_desc_ptr->buf);
+    }
+}
+
+void ETH_trigger_tx(rt_nuc472_emac_t emac, rt_uint16_t length)
+{
+    struct eth_descriptor volatile *desc;
+    
+    emac->cur_tx_desc_ptr->status2 = (unsigned int)length;
+    desc = emac->cur_tx_desc_ptr->next;    // in case TX is transmitting and overwrite next pointer before we can update cur_tx_desc_ptr
+    emac->cur_tx_desc_ptr->status1 |= OWNERSHIP_EMAC;
+    emac->cur_tx_desc_ptr = desc;
+    
+    ETH_TRIGGER_TX();
+}
+
+/*
+ * NUC472 EMAC Driver for RT-Thread
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-12-31     Bluebear233  first implementation
+ */
+void rt_nuc472_emac_tx_isr(rt_nuc472_emac_t emac)
+{
+    emac_emac_done(emac);
+}
+
+void rt_nuc472_emac_rx_isr(rt_nuc472_emac_t emac)
+{
+    EMAC_T *emac_base = emac->emac_base;
+  
+    unsigned int status = emac_base->INTSTS & 0xFFFF;
+    emac_base->INTSTS = status;
+    
+    eth_device_ready(&emac->parent);
+}
+
+void EMAC_TX_IRQHandler(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+    
+    rt_nuc472_emac_tx_isr(&nuc472_emac_device);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+
+void EMAC_RX_IRQHandler(void)
+{
+    /* enter interrupt */
+    rt_interrupt_enter();
+    
+    rt_nuc472_emac_rx_isr(&nuc472_emac_device);
+
+    /* leave interrupt */
+    rt_interrupt_leave();
+}
+
+static rt_err_t rt_nuc472_emac_init(rt_device_t dev)
+{
+    rt_nuc472_emac_t emac = (rt_nuc472_emac_t)dev;
+
+    EMAC_init(emac, emac->dev_addr);
+
+#if LWIP_IPV4 && LWIP_IGMP
+    netif_set_igmp_mac_filter(stm32_eth->parent.netif, igmp_mac_filter);
+#endif /* LWIP_IPV4 && LWIP_IGMP */
+    
+    return RT_EOK;
+}
+
+static rt_err_t rt_nuc472_emac_open(rt_device_t dev, rt_uint16_t oflag)
+{
+    return RT_EOK;
+}
+
+static rt_err_t rt_nuc472_emac_close(rt_device_t dev)
+{
+    return RT_EOK;
+}
+
+static rt_size_t rt_nuc472_emac_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+    rt_set_errno(-RT_ENOSYS);
+    return 0;
+}
+
+static rt_size_t rt_nuc472_emac_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+    rt_set_errno(-RT_ENOSYS);
+    return 0;
+}
+
+static rt_err_t rt_nuc472_emac_control(rt_device_t dev, int cmd, void *args)
+{
+    rt_nuc472_emac_t emac = (rt_nuc472_emac_t)dev; 
+
+    switch(cmd)
+    {
+    case NIOCTL_GADDR:
+        /* get mac address */
+        if(args) rt_memcpy(args, emac->dev_addr, 6);
+        else return -RT_ERROR;
+        break;
+
+    default :
+        break;
+    }
+
+    return RT_EOK;
+}
+
+rt_err_t rt_nuc472_emac_tx(rt_device_t dev, struct pbuf* p)
+{
+    rt_nuc472_emac_t emac = (rt_nuc472_emac_t)dev; 
+    struct pbuf* q;
+    rt_uint32_t offset;
+    rt_uint8_t *buf = emac_get_tx_buf(emac);
+
+    /* get free tx buffer */
+    if(buf == RT_NULL)
+    {
+        rt_kprintf("none tx buf\n");
+        return -RT_ERROR;
+    }
+
+    offset = 0;
+    for (q = p; q != NULL; q = q->next)
+    {
+        rt_uint8_t* ptr;
+        rt_uint32_t len;
+
+        len = q->len;
+        ptr = q->payload;
+
+        /* Copy the frame to be sent into memory pointed by the current ETHERNET DMA Tx descriptor */
+        while (len)
+        {
+            buf[offset] = *ptr;
+
+            offset ++;
+            ptr ++;
+            len --;
+        }
+    }
+
+    ETH_trigger_tx(emac, offset);    
+
+    /* Return SUCCESS */
+    return RT_EOK;
+}
+
+struct pbuf *rt_nuc472_emac_rx(rt_device_t dev)
+{
+    rt_nuc472_emac_t emac = (rt_nuc472_emac_t)dev;
+    struct pbuf* p;
+
+    /* init p pointer */
+    p = RT_NULL;
+
+    unsigned int status;
+    status = emac->cur_rx_desc_ptr->status1;
+
+    if(status & OWNERSHIP_EMAC)
+    {
+        goto end;
+    }
+
+    if (status & RXFD_RXGD) 
+    {
+            //ethernetif_input(status & 0xFFFF, cur_rx_desc_ptr->buf, cur_rx_desc_ptr->status2, (u32_t)cur_rx_desc_ptr->next);
+                    /* allocate buffer */
+        p = pbuf_alloc(PBUF_LINK, status & 0xFFFF, PBUF_RAM);
+        if (p != RT_NULL)
+        {
+            const char * from;
+            struct pbuf* q;
+
+            from = (const char *)(emac->cur_rx_desc_ptr->buf);
+
+            for (q = p; q != RT_NULL; q = q->next)
+            {
+                /* Copy the received frame into buffer from memory pointed by the current ETHERNET DMA Rx descriptor */
+                memcpy(q->payload, from, q->len);
+                from += q->len;
+            }
+        }
+    }
+        
+    emac->cur_rx_desc_ptr->status1 = OWNERSHIP_EMAC;
+    emac->cur_rx_desc_ptr = emac->cur_rx_desc_ptr->next;
+        
+    return p;
+    
+ end:
+    ETH_TRIGGER_RX();
+    
+    return p;
+}
+
+static void rt_hw_nuc472_emac_register(rt_nuc472_emac_t emac, char *dev_name, EMAC_T *emac_base, rt_uint8_t *mac_addr)
+{
+    emac->emac_base = emac_base;
+
+    rt_memcpy(emac->dev_addr, mac_addr, sizeof(emac->dev_addr));
+
+    emac->parent.parent.init      = rt_nuc472_emac_init;
+    emac->parent.parent.open       = rt_nuc472_emac_open;
+    emac->parent.parent.close      = rt_nuc472_emac_close;
+    emac->parent.parent.read       = rt_nuc472_emac_read;
+    emac->parent.parent.write      = rt_nuc472_emac_write;
+    emac->parent.parent.control    = rt_nuc472_emac_control;
+    emac->parent.parent.user_data  = RT_NULL;
+
+    emac->parent.eth_rx     = rt_nuc472_emac_rx;
+    emac->parent.eth_tx     = rt_nuc472_emac_tx;
+
+    /* register eth device */
+    eth_device_init(&(emac->parent), dev_name);
+}
+
+void rt_hw_nuc472_emac_init(void)
+{
+    rt_hw_nuc472_emac_register(&nuc472_emac_device, "eh0", EMAC, ethaddr);
+}
+
+#endif
diff --git a/bsp/nuvoton_nuc472/drivers/nuc472_eth.h b/bsp/nuvoton_nuc472/drivers/nuc472_eth.h
new file mode 100644
index 0000000000..83ded859d6
--- /dev/null
+++ b/bsp/nuvoton_nuc472/drivers/nuc472_eth.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2013 Nuvoton Technology Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Description:   NUC472 EMAC driver header file
+ */
+#include "lwip/def.h"
+#include "lwip/pbuf.h"
+#include "NUC472_442.h"
+#ifndef  _NUC472_ETH_
+#define  _NUC472_ETH_
+
+/* Generic MII registers. */
+
+#define MII_BMCR            0x00        /* Basic mode control register */
+#define MII_BMSR            0x01        /* Basic mode status register  */
+#define MII_PHYSID1         0x02        /* PHYS ID 1                   */
+#define MII_PHYSID2         0x03        /* PHYS ID 2                   */
+#define MII_ADVERTISE       0x04        /* Advertisement control reg   */
+#define MII_LPA             0x05        /* Link partner ability reg    */
+#define MII_EXPANSION       0x06        /* Expansion register          */
+#define MII_DCOUNTER        0x12        /* Disconnect counter          */
+#define MII_FCSCOUNTER      0x13        /* False carrier counter       */
+#define MII_NWAYTEST        0x14        /* N-way auto-neg test reg     */
+#define MII_RERRCOUNTER     0x15        /* Receive error counter       */
+#define MII_SREVISION       0x16        /* Silicon revision            */
+#define MII_RESV1           0x17        /* Reserved...                 */
+#define MII_LBRERROR        0x18        /* Lpback, rx, bypass error    */
+#define MII_PHYADDR         0x19        /* PHY address                 */
+#define MII_RESV2           0x1a        /* Reserved...                 */
+#define MII_TPISTATUS       0x1b        /* TPI status for 10mbps       */
+#define MII_NCONFIG         0x1c        /* Network interface config    */
+
+/* Basic mode control register. */
+#define BMCR_RESV               0x007f  /* Unused...                   */
+#define BMCR_CTST               0x0080  /* Collision test              */
+#define BMCR_FULLDPLX           0x0100  /* Full duplex                 */
+#define BMCR_ANRESTART          0x0200  /* Auto negotiation restart    */
+#define BMCR_ISOLATE            0x0400  /* Disconnect DP83840 from MII */
+#define BMCR_PDOWN              0x0800  /* Powerdown the DP83840       */
+#define BMCR_ANENABLE           0x1000  /* Enable auto negotiation     */
+#define BMCR_SPEED100           0x2000  /* Select 100Mbps              */
+#define BMCR_LOOPBACK           0x4000  /* TXD loopback bits           */
+#define BMCR_RESET              0x8000  /* Reset the DP83840           */
+
+/* Basic mode status register. */
+#define BMSR_ERCAP              0x0001  /* Ext-reg capability          */
+#define BMSR_JCD                0x0002  /* Jabber detected             */
+#define BMSR_LSTATUS            0x0004  /* Link status                 */
+#define BMSR_ANEGCAPABLE        0x0008  /* Able to do auto-negotiation */
+#define BMSR_RFAULT             0x0010  /* Remote fault detected       */
+#define BMSR_ANEGCOMPLETE       0x0020  /* Auto-negotiation complete   */
+#define BMSR_RESV               0x07c0  /* Unused...                   */
+#define BMSR_10HALF             0x0800  /* Can do 10mbps, half-duplex  */
+#define BMSR_10FULL             0x1000  /* Can do 10mbps, full-duplex  */
+#define BMSR_100HALF            0x2000  /* Can do 100mbps, half-duplex */
+#define BMSR_100FULL            0x4000  /* Can do 100mbps, full-duplex */
+#define BMSR_100BASE4           0x8000  /* Can do 100mbps, 4k packets  */
+
+/* Advertisement control register. */
+#define ADVERTISE_SLCT          0x001f  /* Selector bits               */
+#define ADVERTISE_CSMA          0x0001  /* Only selector supported     */
+#define ADVERTISE_10HALF        0x0020  /* Try for 10mbps half-duplex  */
+#define ADVERTISE_10FULL        0x0040  /* Try for 10mbps full-duplex  */
+#define ADVERTISE_100HALF       0x0080  /* Try for 100mbps half-duplex */
+#define ADVERTISE_100FULL       0x0100  /* Try for 100mbps full-duplex */
+#define ADVERTISE_100BASE4      0x0200  /* Try for 100mbps 4k packets  */
+#define ADVERTISE_RESV          0x1c00  /* Unused...                   */
+#define ADVERTISE_RFAULT        0x2000  /* Say we can detect faults    */
+#define ADVERTISE_LPACK         0x4000  /* Ack link partners response  */
+#define ADVERTISE_NPAGE         0x8000  /* Next page bit               */
+
+#define RX_DESCRIPTOR_NUM 4    // Max Number of Rx Frame Descriptors
+#define TX_DESCRIPTOR_NUM 2    // Max number of Tx Frame Descriptors
+
+#define PACKET_BUFFER_SIZE  1520
+
+#define CONFIG_PHY_ADDR     1
+
+
+// Frame Descriptor's Owner bit
+#define OWNERSHIP_EMAC 0x80000000  // 1 = EMAC
+//#define OWNERSHIP_CPU 0x7fffffff  // 0 = CPU
+
+
+
+// Rx Frame Descriptor Status
+#define RXFD_RXGD    0x00100000  // Receiving Good Packet Received
+#define RXFD_RTSAS   0x00800000  // RX Time Stamp Available 
+
+
+// Tx Frame Descriptor's Control bits
+#define TXFD_TTSEN    0x08    // Tx Time Stamp Enable
+#define TXFD_INTEN    0x04    // Interrupt Enable
+#define TXFD_CRCAPP   0x02    // Append CRC
+#define TXFD_PADEN    0x01    // Padding Enable
+
+// Tx Frame Descriptor Status
+#define TXFD_TXCP    0x00080000  // Transmission Completion
+#define TXFD_TTSAS   0x08000000  // TX Time Stamp Available
+
+// Tx/Rx buffer descriptor structure
+struct eth_descriptor {
+    u32_t  status1;
+    u8_t *buf;
+    u32_t  status2;
+    struct eth_descriptor *next;
+};
+
+#endif  /* _NUC472_ETH_ */
diff --git a/bsp/nuvoton_nuc472/project.ewp b/bsp/nuvoton_nuc472/project.ewp
index 366030b166..c9216fc601 100644
--- a/bsp/nuvoton_nuc472/project.ewp
+++ b/bsp/nuvoton_nuc472/project.ewp
@@ -292,16 +292,22 @@
         <option>
           <name>CCIncludePath2</name>
           <state />
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\ipv4</state>
           <state>$PROJ_DIR$\Libraries\CMSIS\Include</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include</state>
           <state>$PROJ_DIR$\..\..\include</state>
           <state>$PROJ_DIR$\drivers</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src</state>
           <state>$PROJ_DIR$\.</state>
           <state>$PROJ_DIR$\applications</state>
           <state>$PROJ_DIR$\..\..\libcpu\arm\cortex-m4</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\netif</state>
           <state>$PROJ_DIR$\..\..\components\drivers\include</state>
           <state>$PROJ_DIR$\..\..\libcpu\arm\common</state>
           <state>$PROJ_DIR$\Libraries\StdDriver\inc</state>
           <state>$PROJ_DIR$\..\..\components\finsh</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\posix</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\arch\include</state>
           <state>$PROJ_DIR$\Libraries\Device\Nuvoton\NUC472_442\Include</state>
         </option>
         <option>
@@ -1209,16 +1215,22 @@
         <option>
           <name>CCIncludePath2</name>
           <state />
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\ipv4</state>
           <state>$PROJ_DIR$\Libraries\CMSIS\Include</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include</state>
           <state>$PROJ_DIR$\..\..\include</state>
           <state>$PROJ_DIR$\drivers</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src</state>
           <state>$PROJ_DIR$\.</state>
           <state>$PROJ_DIR$\applications</state>
           <state>$PROJ_DIR$\..\..\libcpu\arm\cortex-m4</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\netif</state>
           <state>$PROJ_DIR$\..\..\components\drivers\include</state>
           <state>$PROJ_DIR$\..\..\libcpu\arm\common</state>
           <state>$PROJ_DIR$\Libraries\StdDriver\inc</state>
           <state>$PROJ_DIR$\..\..\components\finsh</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\include\posix</state>
+          <state>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\arch\include</state>
           <state>$PROJ_DIR$\Libraries\Device\Nuvoton\NUC472_442\Include</state>
         </option>
         <option>
@@ -1846,6 +1858,9 @@
       <name>$PROJ_DIR$\drivers\board.c</name>
     </file>
     <file>
+      <name>$PROJ_DIR$\drivers\nuc472_eth.c</name>
+    </file>
+    <file>
       <name>$PROJ_DIR$\drivers\usart.c</name>
     </file>
   </group>
@@ -1930,7 +1945,7 @@
       <name>$PROJ_DIR$\Libraries\StdDriver\src\spi.c</name>
     </file>
     <file>
-      <name>$PROJ_DIR$\Libraries\StdDriver\src\sys.c</name>
+      <name>$PROJ_DIR$\Libraries\StdDriver\src\sys_.c</name>
     </file>
     <file>
       <name>$PROJ_DIR$\Libraries\StdDriver\src\timer_.c</name>
@@ -2056,4 +2071,115 @@
       <name>$PROJ_DIR$\..\..\components\finsh\msh_file.c</name>
     </file>
   </group>
+  <group>
+    <name>lwIP</name>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\arch\sys_arch.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\api_lib.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\api_msg.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\err.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\netbuf.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\netdb.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\netifapi.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\sockets.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\api\tcpip.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\def.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\dns.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\inet_chksum.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\init.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ip.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\memp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\netif.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\pbuf.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\raw.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\stats.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\sys.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\tcp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\tcp_in.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\tcp_out.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\timeouts.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\udp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\netif\ethernet.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\netif\ethernetif.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\netif\lowpan6.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\autoip.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\dhcp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\etharp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\icmp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\igmp.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4_addr.c</name>
+    </file>
+    <file>
+      <name>$PROJ_DIR$\..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4_frag.c</name>
+    </file>
+  </group>
 </project>
diff --git a/bsp/nuvoton_nuc472/project.uvprojx b/bsp/nuvoton_nuc472/project.uvprojx
index 90f1e12a54..c01f7bab6e 100644
--- a/bsp/nuvoton_nuc472/project.uvprojx
+++ b/bsp/nuvoton_nuc472/project.uvprojx
@@ -330,7 +330,7 @@
               <MiscControls />
               <Define />
               <Undefine />
-              <IncludePath>applications;.;drivers;Libraries\CMSIS\Include;Libraries\Device\Nuvoton\NUC472_442\Include;Libraries\StdDriver\inc;..\..\include;..\..\libcpu\arm\cortex-m4;..\..\libcpu\arm\common;..\..\components\drivers\include;..\..\components\drivers\include;..\..\components\finsh</IncludePath>
+              <IncludePath>applications;.;drivers;Libraries\CMSIS\Include;Libraries\Device\Nuvoton\NUC472_442\Include;Libraries\StdDriver\inc;..\..\include;..\..\libcpu\arm\cortex-m4;..\..\libcpu\arm\common;..\..\components\drivers\include;..\..\components\drivers\include;..\..\components\finsh;..\..\components\net\lwip-2.0.2\src;..\..\components\net\lwip-2.0.2\src\include;..\..\components\net\lwip-2.0.2\src\include\ipv4;..\..\components\net\lwip-2.0.2\src\arch\include;..\..\components\net\lwip-2.0.2\src\include\netif;..\..\components\net\lwip-2.0.2\src\include\posix</IncludePath>
             </VariousControls>
           </Cads>
           <Aads>
@@ -391,6 +391,13 @@
           </Files>
           <Files>
             <File>
+              <FileName>nuc472_eth.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>drivers\nuc472_eth.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
               <FileName>usart.c</FileName>
               <FileType>1</FileType>
               <FilePath>drivers\usart.c</FilePath>
@@ -579,9 +586,9 @@
           </Files>
           <Files>
             <File>
-              <FileName>sys.c</FileName>
+              <FileName>sys_.c</FileName>
               <FileType>1</FileType>
-              <FilePath>Libraries\StdDriver\src\sys.c</FilePath>
+              <FilePath>Libraries\StdDriver\src\sys_.c</FilePath>
             </File>
           </Files>
           <Files>
@@ -856,6 +863,261 @@
             </File>
           </Files>
         </Group>
+        <Group>
+          <GroupName>lwIP</GroupName>
+          <Files>
+            <File>
+              <FileName>sys_arch.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\arch\sys_arch.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>api_lib.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\api_lib.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>api_msg.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\api_msg.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>err.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\err.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>netbuf.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\netbuf.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>netdb.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\netdb.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>netifapi.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\netifapi.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>sockets.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\sockets.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>tcpip.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\api\tcpip.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>def.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\def.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>dns.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\dns.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>inet_chksum.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\inet_chksum.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>init.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\init.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ip.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ip.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>memp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\memp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>netif.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\netif.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>pbuf.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\pbuf.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>raw.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\raw.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>stats.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\stats.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>sys.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\sys.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>tcp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\tcp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>tcp_in.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\tcp_in.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>tcp_out.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\tcp_out.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>timeouts.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\timeouts.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>udp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\udp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ethernet.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\netif\ethernet.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ethernetif.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\netif\ethernetif.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>lowpan6.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\netif\lowpan6.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>autoip.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\autoip.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>dhcp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\dhcp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>etharp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\etharp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>icmp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\icmp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>igmp.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\igmp.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ip4.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ip4_addr.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4_addr.c</FilePath>
+            </File>
+          </Files>
+          <Files>
+            <File>
+              <FileName>ip4_frag.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\components\net\lwip-2.0.2\src\core\ipv4\ip4_frag.c</FilePath>
+            </File>
+          </Files>
+        </Group>
       </Groups>
     </Target>
   </Targets>
diff --git a/bsp/nuvoton_nuc472/rtconfig.h b/bsp/nuvoton_nuc472/rtconfig.h
index 579edf73c9..dccf59ecc8 100644
--- a/bsp/nuvoton_nuc472/rtconfig.h
+++ b/bsp/nuvoton_nuc472/rtconfig.h
@@ -110,7 +110,7 @@
 #define DFS_FD_MAX					4
 
 /* SECTION: lwip, a lighwight TCP/IP protocol stack */
-/* #define RT_USING_LWIP */
+#define RT_USING_LWIP
 /* Enable ICMP protocol*/
 #define RT_LWIP_ICMP
 /* Enable UDP protocol*/
@@ -126,23 +126,14 @@
 /* Using DHCP */
 /* #define RT_LWIP_DHCP */
 
-/* ip address of target*/
-#define RT_LWIP_IPADDR0	192
-#define RT_LWIP_IPADDR1	168
-#define RT_LWIP_IPADDR2	1
-#define RT_LWIP_IPADDR3	30
+/* ip address of target */
+#define RT_LWIP_IPADDR "192.168.1.37"
 
-/* gateway address of target*/
-#define RT_LWIP_GWADDR0	192
-#define RT_LWIP_GWADDR1	168
-#define RT_LWIP_GWADDR2	1
-#define RT_LWIP_GWADDR3	1
+/* gateway address of target */
+#define RT_LWIP_GWADDR  "192.168.1.1"
 
-/* mask address of target*/
-#define RT_LWIP_MSKADDR0	255
-#define RT_LWIP_MSKADDR1	255
-#define RT_LWIP_MSKADDR2	255
-#define RT_LWIP_MSKADDR3	0
+/* mask address of target */
+#define RT_LWIP_MSKADDR  "255.255.255.0"
 
 /* tcp thread options */
 #define RT_LWIP_TCPTHREAD_PRIORITY		12
diff --git a/bsp/nuvoton_nuc472/rtconfig.py b/bsp/nuvoton_nuc472/rtconfig.py
index c827b105fa..a26d433eda 100644
--- a/bsp/nuvoton_nuc472/rtconfig.py
+++ b/bsp/nuvoton_nuc472/rtconfig.py
@@ -3,7 +3,7 @@ import os
 # toolchains options
 ARCH='arm'
 CPU='cortex-m4'
-CROSS_TOOL='keil'
+CROSS_TOOL='gcc'
 
 if os.getenv('RTT_CC'):
 	CROSS_TOOL = os.getenv('RTT_CC')