diff --git a/branches/follower/wiz810mj/src/lib/w5100.c b/branches/follower/wiz810mj/src/lib/w5100.c
index 9af4aee..a5bf219 100644
--- a/branches/follower/wiz810mj/src/lib/w5100.c
+++ b/branches/follower/wiz810mj/src/lib/w5100.c
@@ -1,1237 +1,1237 @@
-/*
-@file		w5100.c
-*/
-
-#include <stdio.h>
-#include <string.h>
-
-#include <avr/interrupt.h>
-// #include <avr/io.h> 
-   
-#include "types.h"
-#include "delay.h" // for wait function 
-
-#include "w5100.h"
-
-
-
-#ifdef __DEF_IINCHIP_PPP__
-   #include "md5.h"
-#endif
-
-static uint8 I_STATUS[MAX_SOCK_NUM];
-static uint16 SMASK[MAX_SOCK_NUM]; /**< Variable for Tx buffer MASK in each channel */
-static uint16 RMASK[MAX_SOCK_NUM]; /**< Variable for Rx buffer MASK in each channel */
-static uint16 SSIZE[MAX_SOCK_NUM]; /**< Max Tx buffer size by each channel */
-static uint16 RSIZE[MAX_SOCK_NUM]; /**< Max Rx buffer size by each channel */
-static uint16 SBUFBASEADDRESS[MAX_SOCK_NUM]; /**< Tx buffer base address by each channel */
-static uint16 RBUFBASEADDRESS[MAX_SOCK_NUM]; /**< Rx buffer base address by each channel */
-
-uint8 getISR(uint8 s)
-{
-	return I_STATUS[s];
-}
-
-void putISR(uint8 s, uint8 val)
-{
-   I_STATUS[s] = val;
-}
-
-uint16 getIINCHIP_RxMAX(uint8 s)
-{
-   return RSIZE[s];
-}
-uint16 getIINCHIP_TxMAX(uint8 s)
-{
-   return SSIZE[s];
-}
-uint16 getIINCHIP_RxMASK(uint8 s)
-{
-   return RMASK[s];
-}
-uint16 getIINCHIP_TxMASK(uint8 s)
-{
-   return SMASK[s];
-}
-uint16 getIINCHIP_RxBASE(uint8 s)
-{
-   return RBUFBASEADDRESS[s];
-}
-uint16 getIINCHIP_TxBASE(uint8 s)
-{
-   return SBUFBASEADDRESS[s];
-}
-
- /**
-@brief	This function writes the data into W5100 registers.
-*/
-uint8 IINCHIP_WRITE(uint16 addr,uint8 data)
-{
-// DIRECT MODE I/F
-#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
-	IINCHIP_ISR_DISABLE();
-	*((vuint8*)(addr)) = data;
-	IINCHIP_ISR_ENABLE();
-#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)	/* INDIRECT MODE I/F */
-	   IINCHIP_ISR_DISABLE();
-	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
-	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
-	   *((vuint8*)IDM_DR)  = data;
-	   IINCHIP_ISR_ENABLE();
-#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
-	   //SPI MODE I/F
-	   IINCHIP_ISR_DISABLE();
-	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
-		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
-	   PORTB = 0x01;                             // CS=1, waiting for SPI start
-	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
-	   SPSR  = 0x01;                             // SPI2X=0 
-	      
-	   PORTB = 0x00;                             // CS=0, SPI start 
-	   SPDR  = 0xF0;
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)(addr & 0x00FF);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = data;
-	   while((SPSR&0x80)==0x00);
-	   PORTB = 0x01;                             // SPI end
-	                                                // CS=1, waiting for SPI start 
-	   IINCHIP_ISR_ENABLE();   
-#else
-	#error "unknown bus type"
-#endif
-	return 1;
-}
-
-
-/**
-@brief	This function reads the value from W5100 registers.
-*/
-uint8 IINCHIP_READ(uint16 addr)
-{
-	uint8 data;
-
-// DIRECT MODE I/F
-
-#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
-	IINCHIP_ISR_DISABLE();
-	data = *((vuint8*)(addr));
-	IINCHIP_ISR_ENABLE();
-#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)   
-	   IINCHIP_ISR_DISABLE();
-	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
-	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
-	   data = *((vuint8*)IDM_DR);
-	   IINCHIP_ISR_ENABLE();
-   
-#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
-	   //SPI MODE I/F
-	   IINCHIP_ISR_DISABLE();
-	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output  
-		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)
-	   PORTB = 0x01;                             // CS=1, waiting for SPI start
-	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
-	   SPSR  = 0x01;                             // SPI2X=0 
-	      
-	   PORTB = 0x00;                             // CS=0, SPI start
-	   SPDR  = 0x0F;
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)(addr & 0x00FF);
-	   while((SPSR&0x80)==0x00);
-	   SPDR = 0x00;                              // write dummy data
-	   while((SPSR&0x80)==0x00);
-	   data = SPDR;                              // read data 
-	   PORTB = 0x01;                             // SPI end
-	                                                // CS=1, waiting for SPI start 
-	   IINCHIP_ISR_ENABLE();
-#else
-	#error "unknown bus type"
-#endif
-	return data;
-}
-
-
-/**
-@brief	This function writes into W5100 memory(Buffer)
-*/ 
-uint16 wiz_write_buf(uint16 addr,uint8* buf,uint16 len)
-{
-#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
-	IINCHIP_ISR_DISABLE();
-   	memcpy((uint8 *)addr, buf, len);
-	IINCHIP_ISR_ENABLE();
-#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
-	   uint16 idx = 0;
-	   IINCHIP_ISR_DISABLE();
-	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
-	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
-	   for (idx = 0; idx < len ; idx++) *((vuint8*)IDM_DR) = buf[idx];
-	   IINCHIP_ISR_ENABLE();
-#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
-	   //SPI MODE I/F
-	   IINCHIP_ISR_DISABLE();
-	   uint16 ii=0;
-      
-	   for(ii=0;ii<len;ii++)
-	   {
-	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
-		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)      
-	   PORTB = 0x01;                             // CS=1, waiting for SPI start
-	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
-	   SPSR  = 0x01;                             // SPI2X=0 
-	      
-	   PORTB = 0x00;                             // CS=0, SPI start
-	   SPDR  = 0xF0;
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)(((addr+ii) & 0xFF00) >> 8);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)((addr+ii) & 0x00FF);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = buf[ii];
-	   while((SPSR&0x80)==0x00);
-	   PORTB = 0x01;                              // SPI end
-	                                                 // CS=1, waiting for SPI start 
-	   }
-	   IINCHIP_ISR_ENABLE();	   
-#else
-	#error "unknown bus type"
-#endif
-	return len;
-}
-
-
-/**
-@brief	This function reads into W5100 memory(Buffer)
-*/ 
-uint16 wiz_read_buf(uint16 addr, uint8* buf,uint16 len)
-{
-#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
-	IINCHIP_ISR_DISABLE();
-	memcpy(buf, (uint8 *)addr, len);
-	IINCHIP_ISR_ENABLE();
-#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
-	   uint16 idx = 0;
-	   IINCHIP_ISR_DISABLE();
-	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
-	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
-	   for (idx = 0; idx < len ; idx++) buf[idx] = *((vuint8*)IDM_DR);
-	   IINCHIP_ISR_ENABLE();
-#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
-	   //SPI MODE I/F
-	   IINCHIP_ISR_DISABLE();
-	   uint16 iii=0;
-	   for (iii=0; iii<len; iii++)
-      	   {
-	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
-		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
-	   PORTB = 0x01;                             // CS=1, waiting for SPI start
-	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
-	   SPSR  = 0x01;                             // SPI2X=0 
-	      
-	   PORTB = 0x00;                             // CS=0, SPI start
-	   SPDR  = 0x0F;
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)(((addr+iii) & 0xFF00) >> 8);
-	   while((SPSR&0x80)==0x00);
-	   SPDR  = (uint8)((addr+iii) & 0x00FF);
-	   while((SPSR&0x80)==0x00);
-	   //for (iii=0; iii<len; iii++)
-	   //{
-	   SPDR = 0x00;                              // write dummy data
-	   while((SPSR&0x80)==0x00);
-	   buf[iii]=SPDR;                            // read data
-	   //}
-	   PORTB = 0x01;                             // SPI end
-	                                                // CS=1, waiting for SPI start 
-	   }
-	   IINCHIP_ISR_ENABLE();
-#else
-	#error "unknown bus type"
-#endif
-	return len;
-}
-
-
-#if (__COMPILER_VERSION__ == __WINAVR_20050214__)
-static void iinchip_irq(void);
-
-void SIG_INTERRUPT4( void ) __attribute__ ((signal));
-void SIG_INTERRUPT4( void )
-{
-	iinchip_irq();
-}
-
-
-/**
-@brief	Socket interrupt routine
-*/ 
-static void iinchip_irq(void)
-{
-#ifdef __DEF_IINCHIP_INT__
-	uint8 int_val;
-	IINCHIP_ISR_DISABLE();
-	int_val = IINCHIP_READ(IR);
-
-	if (int_val & IR_CONFLICT)
-	{
-		printf("IP conflict : %.2x\r\n", int_val);
-	}
-	if (int_val & IR_UNREACH)
-	{
-		printf("INT Port Unreachable : %.2x\r\n", int_val);
-		printf("UIPR0 : %d.%d.%d.%d\r\n", IINCHIP_READ(UIPR0), IINCHIP_READ(UIPR0+1), IINCHIP_READ(UIPR0+2), IINCHIP_READ(UIPR0+3));
-		printf("UPORT0 : %.2x %.2x\r\n", IINCHIP_READ(UPORT0), IINCHIP_READ(UPORT0+1));
-	}
-
-	if (int_val & IR_SOCK(0))
-	{
-		I_STATUS[0] = IINCHIP_READ(Sn_IR(0));
-   	IINCHIP_WRITE(Sn_IR(0), I_STATUS[0] & 0xf);
-	}
-	if (int_val & IR_SOCK(1))
-	{
-		I_STATUS[1] = IINCHIP_READ(Sn_IR(1));
-   	IINCHIP_WRITE(Sn_IR(1), I_STATUS[1] & 0xf);
-	}
-	if (int_val & IR_SOCK(2))
-	{
-		I_STATUS[2] = IINCHIP_READ(Sn_IR(2));
-   	IINCHIP_WRITE(Sn_IR(2), I_STATUS[2] & 0xf);
-	}
-	if (int_val & IR_SOCK(3))
-	{
-		I_STATUS[3] = IINCHIP_READ(Sn_IR(3));
-   	IINCHIP_WRITE(Sn_IR(3), I_STATUS[3] & 0xf);
-	}
-
-	IINCHIP_WRITE(IR, int_val);
-
-	IINCHIP_ISR_ENABLE();
-	
-#endif
-}
-#else	
-/**
-@brief	Socket interrupt routine
-*/ 
-ISR(INT4_vect)
-{
-#ifdef __DEF_IINCHIP_INT__
-	uint8 int_val;
-	IINCHIP_ISR_DISABLE();
-	int_val = IINCHIP_READ(IR);
-
-	if (int_val & IR_CONFLICT)
-	{
-		printf("IP conflict : %.2x\r\n", int_val);
-	}
-	if (int_val & IR_UNREACH)
-	{
-		printf("INT Port Unreachable : %.2x\r\n", int_val);
-		printf("UIPR0 : %d.%d.%d.%d\r\n", IINCHIP_READ(UIPR0), IINCHIP_READ(UIPR0+1), IINCHIP_READ(UIPR0+2), IINCHIP_READ(UIPR0+3));
-		printf("UPORT0 : %.2x %.2x\r\n", IINCHIP_READ(UPORT0), IINCHIP_READ(UPORT0+1));
-	}
-
-	if (int_val & IR_SOCK(0))
-	{
-		I_STATUS[0] = IINCHIP_READ(Sn_IR(0));
-   	IINCHIP_WRITE(Sn_IR(0), I_STATUS[0] & 0xf);
-	}
-	if (int_val & IR_SOCK(1))
-	{
-		I_STATUS[1] = IINCHIP_READ(Sn_IR(1));
-   	IINCHIP_WRITE(Sn_IR(1), I_STATUS[1] & 0xf);
-	}
-	if (int_val & IR_SOCK(2))
-	{
-		I_STATUS[2] = IINCHIP_READ(Sn_IR(2));
-   	IINCHIP_WRITE(Sn_IR(2), I_STATUS[2] & 0xf);
-	}
-	if (int_val & IR_SOCK(3))
-	{
-		I_STATUS[3] = IINCHIP_READ(Sn_IR(3));
-   	IINCHIP_WRITE(Sn_IR(3), I_STATUS[3] & 0xf);
-	}
-
-	IINCHIP_WRITE(IR, int_val);
-
-	IINCHIP_ISR_ENABLE();
-	
-#endif
-}
-#endif
-
-/**
-@brief	This function is for resetting of the iinchip. Initializes the iinchip to work in whether DIRECT or INDIRECT mode
-*/ 
-void iinchip_init(void)
-{
-	setMR(MR_RST);
-
-#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
-	setMR(MR_IND | MR_AI);
-#ifdef __DEF_IINCHIP_DBG__	
-	printf("MR value is %d \r\n",IINCHIP_READ(MR));
-#endif	
-#endif
-}
-
-
-/**
-@brief	This function set the transmit & receive buffer size as per the channels is used
-
-Note for TMSR and RMSR bits are as follows\n
-bit 1-0 : memory size of channel #0 \n
-bit 3-2 : memory size of channel #1 \n
-bit 5-4 : memory size of channel #2 \n
-bit 7-6 : memory size of channel #3 \n\n
-Maximum memory size for Tx, Rx in the W5100 is 8K Bytes,\n
-In the range of 8KBytes, the memory size could be allocated dynamically by each channel.\n
-Be attentive to sum of memory size shouldn't exceed 8Kbytes\n
-and to data transmission and receiption from non-allocated channel may cause some problems.\n
-If the 8KBytes memory is already  assigned to centain channel, \n
-other 3 channels couldn't be used, for there's no available memory.\n
-If two 4KBytes memory are assigned to two each channels, \n
-other 2 channels couldn't be used, for there's no available memory.\n
-*/ 
-void sysinit(
-	uint8 tx_size, 	/**< tx_size Tx memory size (00 - 1KByte, 01- 2KBtye, 10 - 4KByte, 11 - 8KByte) */
-	uint8 rx_size		/**< rx_size Rx memory size (00 - 1KByte, 01- 2KBtye, 10 - 4KByte, 11 - 8KByte) */
-	)
-{
-	int16 i;
-	int16 ssum,rsum;
-
-#ifdef __DEF_IINCHIP_DBG__
-	printf("sysinit()\r\n"); 
-#endif
-
-	ssum = 0;
-	rsum = 0;
-	
-	IINCHIP_WRITE(TMSR,tx_size); /* Set Tx memory size for each channel */
-	IINCHIP_WRITE(RMSR,rx_size);	 /* Set Rx memory size for each channel */
-
-	SBUFBASEADDRESS[0] = (uint16)(__DEF_IINCHIP_MAP_TXBUF__);		/* Set base address of Tx memory for channel #0 */
-	RBUFBASEADDRESS[0] = (uint16)(__DEF_IINCHIP_MAP_RXBUF__);		/* Set base address of Rx memory for channel #0 */
-
-#ifdef __DEF_IINCHIP_DBG__
-	printf("Channel : SEND MEM SIZE : RECV MEM SIZE\r\n");
-#endif
-
-   for (i = 0 ; i < MAX_SOCK_NUM; i++)       // Set the size, masking and base address of Tx & Rx memory by each channel
-	{
-		SSIZE[i] = (int16)(0);
-		RSIZE[i] = (int16)(0);
-		if (ssum < 8192)
-		{
-         switch((tx_size >> i*2) & 0x03)  // Set Tx memory size
-			{
-			case 0:
-				SSIZE[i] = (int16)(1024);
-				SMASK[i] = (uint16)(0x03FF);
-				break;
-			case 1:
-				SSIZE[i] = (int16)(2048);
-				SMASK[i] = (uint16)(0x07FF);
-				break;
-			case 2:
-				SSIZE[i] = (int16)(4096);
-				SMASK[i] = (uint16)(0x0FFF);
-				break;
-			case 3:
-				SSIZE[i] = (int16)(8192);
-				SMASK[i] = (uint16)(0x1FFF);
-				break;
-			}
-		}
-		if (rsum < 8192)
-		{
-         switch((rx_size >> i*2) & 0x03)     // Set Rx memory size
-			{
-			case 0:
-				RSIZE[i] = (int16)(1024);
-				RMASK[i] = (uint16)(0x03FF);
-				break;
-			case 1:
-				RSIZE[i] = (int16)(2048);
-				RMASK[i] = (uint16)(0x07FF);
-				break;
-			case 2:
-				RSIZE[i] = (int16)(4096);
-				RMASK[i] = (uint16)(0x0FFF);
-				break;
-			case 3:
-				RSIZE[i] = (int16)(8192);
-				RMASK[i] = (uint16)(0x1FFF);
-				break;
-			}
-		}
-		ssum += SSIZE[i];
-		rsum += RSIZE[i];
-
-      if (i != 0)             // Sets base address of Tx and Rx memory for channel #1,#2,#3
-		{
-			SBUFBASEADDRESS[i] = SBUFBASEADDRESS[i-1] + SSIZE[i-1];
-			RBUFBASEADDRESS[i] = RBUFBASEADDRESS[i-1] + RSIZE[i-1];
-		}
-#ifdef __DEF_IINCHIP_DBG__
-		printf("%d : %.4x : %.4x : %.4x : %.4x\r\n", i, (uint16)SBUFBASEADDRESS[i], (uint16)RBUFBASEADDRESS[i], SSIZE[i], RSIZE[i]);
-#endif
-	}
-}
-
-void setMR(uint8 val)
-{
-   *((volatile uint8*)(MR)) = val;
-}
-
-
-/**
-@brief	This function sets up gateway IP address.
-*/ 
-void setGAR(
-	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the Gateway IP address. */
-	)
-{
-	IINCHIP_WRITE((GAR0 + 0),addr[0]);
-	IINCHIP_WRITE((GAR0 + 1),addr[1]);
-	IINCHIP_WRITE((GAR0 + 2),addr[2]);
-	IINCHIP_WRITE((GAR0 + 3),addr[3]);
-}
-void getGWIP(uint8 * addr)
-{
-	addr[0] = IINCHIP_READ((GAR0 + 0));
-	addr[1] = IINCHIP_READ((GAR0 + 1));
-	addr[2] = IINCHIP_READ((GAR0 + 2));
-	addr[3] = IINCHIP_READ((GAR0 + 3));
-}
-
-
-/**
-@brief	It sets up SubnetMask address
-*/ 
-void setSUBR(
-	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the SubnetMask address */
-	)
-{
-	IINCHIP_WRITE((SUBR0 + 0),addr[0]);
-	IINCHIP_WRITE((SUBR0 + 1),addr[1]);
-	IINCHIP_WRITE((SUBR0 + 2),addr[2]);
-	IINCHIP_WRITE((SUBR0 + 3),addr[3]);
-}
-
-
-/**
-@brief	This function sets up MAC address.
-*/ 
-void setSHAR(
-	uint8 * addr	/**< a pointer to a 6 -byte array responsible to set the MAC address. */
-	)
-{
-	IINCHIP_WRITE((SHAR0 + 0),addr[0]);
-	IINCHIP_WRITE((SHAR0 + 1),addr[1]);
-	IINCHIP_WRITE((SHAR0 + 2),addr[2]);
-	IINCHIP_WRITE((SHAR0 + 3),addr[3]);
-	IINCHIP_WRITE((SHAR0 + 4),addr[4]);
-	IINCHIP_WRITE((SHAR0 + 5),addr[5]);
-}
-
-
-/**
-@brief	This function sets up Source IP address.
-*/
-void setSIPR(
-	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the Source IP address. */
-	)
-{
-	IINCHIP_WRITE((SIPR0 + 0),addr[0]);
-	IINCHIP_WRITE((SIPR0 + 1),addr[1]);
-	IINCHIP_WRITE((SIPR0 + 2),addr[2]);
-	IINCHIP_WRITE((SIPR0 + 3),addr[3]);
-}
-
-
-/**
-@brief	This function gets Interrupt register in common register.
- */
-uint8 getIR( void )
-{
-   return IINCHIP_READ(IR);
-}
-
-
-
-/**
-@brief	This function sets up Retransmission time.
-
-If there is no response from the peer or delay in response then retransmission 
-will be there as per RTR (Retry Time-value Register)setting
-*/
-void setRTR(uint16 timeout)
-{
-	IINCHIP_WRITE(RTR0,(uint8)((timeout & 0xff00) >> 8));
-	IINCHIP_WRITE((RTR0 + 1),(uint8)(timeout & 0x00ff));
-}
-
-
-/**
-@brief	This function set the number of Retransmission.
-
-If there is no response from the peer or delay in response then recorded time 
-as per RTR & RCR register seeting then time out will occur.
-*/
-void setRCR(uint8 retry)
-{
-	IINCHIP_WRITE(RCR,retry);
-}
-
-
-/**
-@brief	This function set the interrupt mask Enable/Disable appropriate Interrupt. ('1' : interrupt enable)
-
-If any bit in IMR is set as '0' then there is not interrupt signal though the bit is
-set in IR register.
-*/
-void setIMR(uint8 mask)
-{
-	IINCHIP_WRITE(IMR,mask); // must be setted 0x10.
-}
-
-
-/**
-@brief	These below functions are used to get the Gateway, SubnetMask
-		and Source Hardware Address (MAC Address) and Source IP address
-*/
-void getGAR(uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(GAR0);
-	addr[1] = IINCHIP_READ(GAR0+1);
-	addr[2] = IINCHIP_READ(GAR0+2);
-	addr[3] = IINCHIP_READ(GAR0+3);
-}
-void getSUBR(uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(SUBR0);
-	addr[1] = IINCHIP_READ(SUBR0+1);
-	addr[2] = IINCHIP_READ(SUBR0+2);
-	addr[3] = IINCHIP_READ(SUBR0+3);
-}
-void getSHAR(uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(SHAR0);
-	addr[1] = IINCHIP_READ(SHAR0+1);
-	addr[2] = IINCHIP_READ(SHAR0+2);
-	addr[3] = IINCHIP_READ(SHAR0+3);
-	addr[4] = IINCHIP_READ(SHAR0+4);
-	addr[5] = IINCHIP_READ(SHAR0+5);
-}
-void getSIPR(uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(SIPR0);
-	addr[1] = IINCHIP_READ(SIPR0+1);
-	addr[2] = IINCHIP_READ(SIPR0+2);
-	addr[3] = IINCHIP_READ(SIPR0+3);
-}
-
-
-/**
-@brief	These below functions are used to get the Destination Hardware Address (MAC Address), Destination IP address and Destination Port.
-*/
-void getSn_DHAR(SOCKET s, uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(Sn_DHAR0(s));
-	addr[1] = IINCHIP_READ(Sn_DHAR0(s)+1);
-	addr[2] = IINCHIP_READ(Sn_DHAR0(s)+2);
-	addr[3] = IINCHIP_READ(Sn_DHAR0(s)+3);
-	addr[4] = IINCHIP_READ(Sn_DHAR0(s)+4);
-	addr[5] = IINCHIP_READ(Sn_DHAR0(s)+5);
-}
-void setSn_DHAR(SOCKET s, uint8 * addr)
-{
-	IINCHIP_WRITE((Sn_DHAR0(s) + 0),addr[0]);
-	IINCHIP_WRITE((Sn_DHAR0(s) + 1),addr[1]);
-	IINCHIP_WRITE((Sn_DHAR0(s) + 2),addr[2]);
-	IINCHIP_WRITE((Sn_DHAR0(s) + 3),addr[3]);
-	IINCHIP_WRITE((Sn_DHAR0(s) + 4),addr[4]);
-	IINCHIP_WRITE((Sn_DHAR0(s) + 5),addr[5]);
-}
-void getSn_DIPR(SOCKET s, uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(Sn_DIPR0(s));
-	addr[1] = IINCHIP_READ(Sn_DIPR0(s)+1);
-	addr[2] = IINCHIP_READ(Sn_DIPR0(s)+2);
-	addr[3] = IINCHIP_READ(Sn_DIPR0(s)+3);
-}
-void setSn_DIPR(SOCKET s, uint8 * addr)
-{
-	IINCHIP_WRITE((Sn_DIPR0(s) + 0),addr[0]);
-	IINCHIP_WRITE((Sn_DIPR0(s) + 1),addr[1]);
-	IINCHIP_WRITE((Sn_DIPR0(s) + 2),addr[2]);
-	IINCHIP_WRITE((Sn_DIPR0(s) + 3),addr[3]);
-}
-void getSn_DPORT(SOCKET s, uint8 * addr)
-{
-	addr[0] = IINCHIP_READ(Sn_DPORT0(s));
-	addr[1] = IINCHIP_READ(Sn_DPORT0(s)+1);
-}
-void setSn_DPORT(SOCKET s, uint8 * addr)
-{
-	IINCHIP_WRITE((Sn_DPORT0(s) + 0),addr[0]);
-	IINCHIP_WRITE((Sn_DPORT0(s) + 1),addr[1]);
-}
-
-
-/**
-@brief	This sets the maximum segment size of TCP in Active Mode), while in Passive Mode this is set by peer
-*/
-void setSn_MSS(SOCKET s, uint16 Sn_MSSR0)
-{
-	IINCHIP_WRITE(Sn_MSSR0(s),(uint8)((Sn_MSSR0 & 0xff00) >> 8));
-	IINCHIP_WRITE((Sn_MSSR0(s) + 1),(uint8)(Sn_MSSR0 & 0x00ff));
-}
-
-void setSn_TTL(SOCKET s, uint8 ttl)
-{
-   IINCHIP_WRITE(Sn_TTL(s), ttl);
-}
-
-
-/**
-@brief	These below function is used to setup the Protocol Field of IP Header when
-		executing the IP Layer RAW mode.
-*/
-void setSn_PROTO(SOCKET s, uint8 proto)
-{
-	IINCHIP_WRITE(Sn_PROTO(s),proto);
-}
-
-
-/**
-@brief	get socket interrupt status
-
-These below functions are used to read the Interrupt & Soket Status register
-*/
-uint8 getSn_IR(SOCKET s)
-{
-   return IINCHIP_READ(Sn_IR(s));
-}
-
-
-/**
-@brief	 get socket status
-*/
-uint8 getSn_SR(SOCKET s)
-{
-   return IINCHIP_READ(Sn_SR(s));
-}
-
-
-/**
-@brief	get socket TX free buf size
-
-This gives free buffer size of transmit buffer. This is the data size that user can transmit.
-User shuold check this value first and control the size of transmitting data
-*/
-uint16 getSn_TX_FSR(SOCKET s)
-{
-	uint16 val=0,val1=0;
-	do
-	{
-		val1 = IINCHIP_READ(Sn_TX_FSR0(s));
-		val1 = (val1 << 8) + IINCHIP_READ(Sn_TX_FSR0(s) + 1);
-      if (val1 != 0)
-		{
-   			val = IINCHIP_READ(Sn_TX_FSR0(s));
-   			val = (val << 8) + IINCHIP_READ(Sn_TX_FSR0(s) + 1);
-		}
-	} while (val != val1);
-   return val;
-}
-
-
-/**
-@brief	 get socket RX recv buf size
-
-This gives size of received data in receive buffer. 
-*/
-uint16 getSn_RX_RSR(SOCKET s)
-{
-	uint16 val=0,val1=0;
-	do
-	{
-		val1 = IINCHIP_READ(Sn_RX_RSR0(s));
-		val1 = (val1 << 8) + IINCHIP_READ(Sn_RX_RSR0(s) + 1);
-      if(val1 != 0)
-		{
-   			val = IINCHIP_READ(Sn_RX_RSR0(s));
-   			val = (val << 8) + IINCHIP_READ(Sn_RX_RSR0(s) + 1);
-		}
-	} while (val != val1);
-   return val;
-}
-
-
-/**
-@brief	 This function is being called by send() and sendto() function also. 
-
-This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
-register. User should read upper byte first and lower byte later to get proper value.
-*/
-void send_data_processing(SOCKET s, uint8 *data, uint16 len)
-{
-	uint16 ptr;
-	ptr = IINCHIP_READ(Sn_TX_WR0(s));
-	ptr = ((ptr & 0x00ff) << 8) + IINCHIP_READ(Sn_TX_WR0(s) + 1);
-	write_data(s, data, (uint8 *)(ptr), len);
-	ptr += len;
-	IINCHIP_WRITE(Sn_TX_WR0(s),(uint8)((ptr & 0xff00) >> 8));
-	IINCHIP_WRITE((Sn_TX_WR0(s) + 1),(uint8)(ptr & 0x00ff));
-}
-
-
-/**
-@brief	This function is being called by recv() also.
-
-This function read the Rx read pointer register
-and after copy the data from receive buffer update the Rx write pointer register.
-User should read upper byte first and lower byte later to get proper value.
-*/
-void recv_data_processing(SOCKET s, uint8 *data, uint16 len)
-{
-	uint16 ptr;
-	ptr = IINCHIP_READ(Sn_RX_RD0(s));
-	ptr = ((ptr & 0x00ff) << 8) + IINCHIP_READ(Sn_RX_RD0(s) + 1);
-#ifdef __DEF_IINCHIP_DBG__
-	printf("ISR_RX: rd_ptr : %.4x\r\n", ptr);
-#endif
-	read_data(s, (uint8 *)ptr, data, len); // read data
-	ptr += len;
-	IINCHIP_WRITE(Sn_RX_RD0(s),(uint8)((ptr & 0xff00) >> 8));
-	IINCHIP_WRITE((Sn_RX_RD0(s) + 1),(uint8)(ptr & 0x00ff));
-}
-
-
-/**
-@brief	for copy the data form application buffer to Transmite buffer of the chip.
-
-This function is being used for copy the data form application buffer to Transmite
-buffer of the chip. It calculate the actual physical address where one has to write
-the data in transmite buffer. Here also take care of the condition while it exceed
-the Tx memory uper-bound of socket.
-*/
-void write_data(SOCKET s, vuint8 * src, vuint8 * dst, uint16 len)
-{
-	uint16 size;
-	uint16 dst_mask;
-	uint8 * dst_ptr;
-
-	dst_mask = (uint16)dst & getIINCHIP_TxMASK(s);
-	dst_ptr = (uint8 *)(getIINCHIP_TxBASE(s) + dst_mask);
-	
-	if (dst_mask + len > getIINCHIP_TxMAX(s)) 
-	{
-		size = getIINCHIP_TxMAX(s) - dst_mask;
-		wiz_write_buf((uint16)dst_ptr, (uint8*)src, size);
-		src += size;
-		size = len - size;
-		dst_ptr = (uint8 *)(getIINCHIP_TxBASE(s));
-		wiz_write_buf((uint16)dst_ptr, (uint8*)src, size);
-	} 
-	else
-	{
-		wiz_write_buf((uint16)dst_ptr, (uint8*)src, len);
-	}
-}
-
-
-/**
-@brief	This function is being used for copy the data form Receive buffer of the chip to application buffer.
-
-It calculate the actual physical address where one has to read
-the data from Receive buffer. Here also take care of the condition while it exceed
-the Rx memory uper-bound of socket.
-*/
-void read_data(SOCKET s, vuint8 * src, vuint8 * dst, uint16 len)
-{
-	uint16 size;
-	uint16 src_mask;
-	uint8 * src_ptr;
-
-	src_mask = (uint16)src & getIINCHIP_RxMASK(s);
-	src_ptr = (uint8 *)(getIINCHIP_RxBASE(s) + src_mask);
-	
-	if( (src_mask + len) > getIINCHIP_RxMAX(s) ) 
-	{
-		size = getIINCHIP_RxMAX(s) - src_mask;
-		wiz_read_buf((uint16)src_ptr, (uint8*)dst,size);
-		dst += size;
-		size = len - size;
-		src_ptr = (uint8 *)(getIINCHIP_RxBASE(s));
-		wiz_read_buf((uint16)src_ptr, (uint8*) dst,size);
-	} 
-	else
-	{
-		wiz_read_buf((uint16)src_ptr, (uint8*) dst,len);
-	}
-}
-
-
-#ifdef __DEF_IINCHIP_PPP__
-#define PPP_OPTION_BUF_LEN 64
-
-uint8 pppinit_in(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen);
-
-
-/**
-@brief	make PPPoE connection
-@return	1 => success to connect, 2 => Auth fail, 3 => timeout, 4 => Auth type not support
-
-*/
-uint8 pppinit(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen)
-{
-	uint8 ret;
-	uint8 isr;
-	
-	// PHASE0. W5100 PPPoE(ADSL) setup
-	// enable pppoe mode
-	printf("-- PHASE 0. W5100 PPPoE(ADSL) setup process --\r\n");
-	printf("\r\n");
-	IINCHIP_WRITE(MR,IINCHIP_READ(MR) | MR_PPPOE);
-
-	// open socket in pppoe mode
-	isr = IINCHIP_READ(Sn_IR(0));// first clear isr(0), W5100 at present time
-	IINCHIP_WRITE(Sn_IR(0),isr);
-	
-	IINCHIP_WRITE(PTIMER,200); // 5sec timeout
-	IINCHIP_WRITE(PMAGIC,0x01); // magic number
-	IINCHIP_WRITE(Sn_MR(0),Sn_MR_PPPOE);
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_OPEN);
-	
-	ret = pppinit_in(id, idlen, passwd, passwdlen);
-
-	// close ppp connection socket
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_CLOSE);
-	return ret;
-}
-
-
-uint8 pppinit_in(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen)
-{
-	uint8 loop_idx = 0;
-	uint8 isr = 0;
-	uint8 buf[PPP_OPTION_BUF_LEN];
-	uint16 len;
-	uint8 str[PPP_OPTION_BUF_LEN];
-	uint8 str_idx,dst_idx;
-
-   // PHASE1. PPPoE Discovery
-	// start to connect pppoe connection
-	printf("-- PHASE 1. PPPoE Discovery process --");
-	printf(" ok\r\n");
-	printf("\r\n");
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCON);
-	wait_10ms(100);
-
-	loop_idx = 0;
-	//check whether PPPoE discovery end or not
-	while (!(IINCHIP_READ(Sn_IR(0)) & Sn_IR_PNEXT))
-	{
-		printf(".");
-		if (loop_idx++ == 10) // timeout
-		{
-			printf("timeout before LCP\r\n"); 
-			return 3;
-		}
-		wait_10ms(100);
-	}
-
-   // PHASE2. LCP process
-	printf("-- PHASE 2. LCP process --");
-		
-	// send LCP Request
-	{
-		// Magic number option
-		// option format (type value + length value + data)
-	   // write magic number value
-		buf[0] = 0x05; // type value
-		buf[1] = 0x06; // length value
-		buf[2] = 0x01; buf[3] = 0x01; buf[4] = 0x01; buf[5]= 0x01; // data
-		// for MRU option, 1492 0x05d4  
-		// buf[6] = 0x01; buf[7] = 0x04; buf[8] = 0x05; buf[9] = 0xD4;
-	}
-	send_data_processing(0, buf, 0x06);
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send request 
-	wait_10ms(100);
-
-	while (!((isr = IINCHIP_READ(Sn_IR(0))) & Sn_IR_PNEXT))
-	{
-		if (isr & Sn_IR_PRECV) // Not support option
-		{
-			len = getSn_RX_RSR(0);
-			if ( len > 0 )
-			{
-				recv_data_processing(0, str, len);
-				IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
-				// for debug
-				//printf("LCP proc\r\n"); for (i = 0; i < len; i++) printf ("%02x ", str[i]); printf("\r\n");
-				// get option length
-				len = str[4]; len = ((len & 0x00ff) << 8) + str[5];
-				len += 2;
-				str_idx = 6; dst_idx = 0; // ppp header is 6 byte, so starts at 6.
-				do 
-				{
-					if ((str[str_idx] == 0x01) || (str[str_idx] == 0x02) || (str[str_idx] == 0x03) || (str[str_idx] == 0x05))
-					{
-						// skip as length of support option. str_idx+1 is option's length.
-						str_idx += str[str_idx+1];
-					}
-					else
-					{
-						// not support option , REJECT
-						memcpy((uint8 *)(buf+dst_idx), (uint8 *)(str+str_idx), str[str_idx+1]);
-						dst_idx += str[str_idx+1]; str_idx += str[str_idx+1];
-					}
-				} while (str_idx != len);
-	   			// for debug
-	   			// printf("LCP dst proc\r\n"); for (i = 0; i < dst_idx; i++) printf ("%02x ", dst[i]); printf("\r\n");
-	   
-	   			// send LCP REJECT packet
-	   			send_data_processing(0, buf, dst_idx);
-	   			IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCJ);
-      			}
-		}
-		printf(".");
-		if (loop_idx++ == 10) // timeout
-		{
-			printf("timeout after LCP\r\n");
-			return 3;
-		}
-		wait_10ms(100);
-	}
-	printf(" ok\r\n");
-	printf("\r\n");
-
-	printf("-- PHASE 3. PPPoE(ADSL) Authentication mode --\r\n");
-	printf("Authentication protocol : %.2x %.2x, ", IINCHIP_READ(PATR0), IINCHIP_READ(PATR0+1));
-
-	loop_idx = 0;
-	if (IINCHIP_READ(PATR0) == 0xc0 && IINCHIP_READ(PATR0+1) == 0x23)
-	{
-		printf("PAP\r\n"); // in case of adsl normally supports PAP.
-		// send authentication data
-		// copy (idlen + id + passwdlen + passwd)
-		buf[loop_idx] = idlen; loop_idx++;
-		memcpy((uint8 *)(buf+loop_idx), (uint8 *)(id), idlen); loop_idx += idlen;
-		buf[loop_idx] = passwdlen; loop_idx++;
-		memcpy((uint8 *)(buf+loop_idx), (uint8 *)(passwd), passwdlen); loop_idx += passwdlen;
-		send_data_processing(0, buf, loop_idx);
-		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
-		wait_10ms(100);
-	}	
-	else if (IINCHIP_READ(PATR0) == 0xc2 && IINCHIP_READ(PATR0+1) == 0x23)
-	{
-		uint8 chal_len;
-		md5_ctx context;
-		uint8  digest[16];
-
-		len = getSn_RX_RSR(0);
-		if ( len > 0 )
-		{
-			recv_data_processing(0, str, len);
-			IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
-#ifdef __DEF_IINCHIP_DBG__
-			printf("recv CHAP\r\n");
-			{
-				int16 i;
-				
-				for (i = 0; i < 32; i++) 
-					printf ("%02x ", str[i]);
-			}
-			printf("\r\n");
-#endif
-// str is C2 23 xx CHAL_ID xx xx CHAP_LEN CHAP_DATA
-// index  0  1  2  3       4  5  6        7 ...
-
-			memset(buf,0x00,64);
-			buf[loop_idx] = str[3]; loop_idx++; // chal_id
-			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(passwd), passwdlen); loop_idx += passwdlen; //passwd
-			chal_len = str[6]; // chal_id
-			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(str+7), chal_len); loop_idx += chal_len; //challenge
-			buf[loop_idx] = 0x80;
-#ifdef __DEF_IINCHIP_DBG__
-			printf("CHAP proc d1\r\n");
-			{
-				int16 i;
-				for (i = 0; i < 64; i++) 
-					printf ("%02x ", buf[i]);
-			}
-			printf("\r\n");
-#endif
-
-			md5_init(&context);
-			md5_update(&context, buf, loop_idx);
-			md5_final(digest, &context);
-
-#ifdef __DEF_IINCHIP_DBG__
-			printf("CHAP proc d1\r\n");
-			{
-				int16 i;				
-				for (i = 0; i < 16; i++) 
-					printf ("%02x", digest[i]);
-			}
-			printf("\r\n");
-#endif
-			loop_idx = 0;
-			buf[loop_idx] = 16; loop_idx++; // hash_len
-			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(digest), 16); loop_idx += 16; // hashed value
-			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(id), idlen); loop_idx += idlen; // id
-			send_data_processing(0, buf, loop_idx);
-			IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
-			wait_10ms(100);
-		}
-	}
-	else
-	{
-		printf("Not support\r\n");
-#ifdef __DEF_IINCHIP_DBG__
-		printf("Not support PPP Auth type: %.2x%.2x\r\n",IINCHIP_READ(PATR0), IINCHIP_READ(PATR0+1));
-#endif
-		return 4;
-	}
-	printf("\r\n");
-
-	printf("-- Waiting for PPPoE server's admission --");
-	loop_idx = 0;
-	while (!((isr = IINCHIP_READ(Sn_IR(0))) & Sn_IR_PNEXT))
-	{
-		if (isr & Sn_IR_PFAIL)
-		{
-			printf("failed\r\nReinput id, password..\r\n");
-			return 2;
-		}
-		printf(".");
-		if (loop_idx++ == 10) // timeout
-		{
-			printf("timeout after PAP\r\n");
-			return 3;
-		}
-		wait_10ms(100);
-	}
-	printf("ok\r\n");
-	printf("\r\n");
-	printf("-- PHASE 4. IPCP process --");
-	// IP Address
-	buf[0] = 0x03; buf[1] = 0x06; buf[2] = 0x00; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00;
-	send_data_processing(0, buf, 6);
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
-	wait_10ms(100);
-
-	loop_idx = 0;
-	while (1)
-	{
-		if (IINCHIP_READ(Sn_IR(0)) & Sn_IR_PRECV)
-		{
-			len = getSn_RX_RSR(0);
-			if ( len > 0 )
-			{
-				recv_data_processing(0, str, len);
-				IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
-	   			//for debug
-	   			//printf("IPCP proc\r\n"); for (i = 0; i < len; i++) printf ("%02x ", str[i]); printf("\r\n");
-	   			str_idx = 6; dst_idx = 0;
-	   			if (str[2] == 0x03) // in case of NAK
-	   			{
-	   				do 
-	   				{
-	   					if (str[str_idx] == 0x03) // request only ip information
-	   					{
-	   						memcpy((uint8 *)(buf+dst_idx), (uint8 *)(str+str_idx), str[str_idx+1]);
-	   						dst_idx += str[str_idx+1]; str_idx += str[str_idx+1];
-	   					}
-	   					else
-	   					{
-	   						// skip byte
-	   						str_idx += str[str_idx+1];
-	   					}
-	   					// for debug
-	   					//printf("s: %d, d: %d, l: %d", str_idx, dst_idx, len);
-	   				} while (str_idx != len);
-	   				send_data_processing(0, buf, dst_idx);
-	   				IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send ipcp request
-	   				wait_10ms(100);
-	   				break;
-	   			}
-			}
-		}
-		printf(".");
-		if (loop_idx++ == 10) // timeout
-		{
-			printf("timeout after IPCP\r\n");
-			return 3;
-		}
-		wait_10ms(100);
-		send_data_processing(0, buf, 6);
-		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); //ipcp re-request
-	}
-
-	loop_idx = 0;
-	while (!(IINCHIP_READ(Sn_IR(0)) & Sn_IR_PNEXT))
-	{
-		printf(".");
-		if (loop_idx++ == 10) // timeout
-		{
-			printf("timeout after IPCP NAK\r\n");
-			return 3;
-		}
-		wait_10ms(100);
-		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send ipcp request
-	}
-	printf("ok\r\n");
-	printf("\r\n");
-	return 1;
-	// after this function, User must save the pppoe server's mac address and pppoe session id in current connection
-}
-
-
-/**
-@brief	terminate PPPoE connection
-*/
-uint8 pppterm(uint8 * mac, uint8 * sessionid)
-{
-	uint16 i;
-	uint8 isr;
-#ifdef __DEF_IINCHIP_DBG__
-	printf("pppterm()\r\n");
-#endif
-	/* Set PPPoE bit in MR(Common Mode Register) : enable socket0 pppoe */
-	IINCHIP_WRITE(MR,IINCHIP_READ(MR) | MR_PPPOE);
-	
-	// write pppoe server's mac address and session id 
-	// must be setted these value.
-	for (i = 0; i < 6; i++) IINCHIP_WRITE((Sn_DHAR0(0)+i),mac[i]);
-	for (i = 0; i < 2; i++) IINCHIP_WRITE((Sn_DPORT0(0)+i),sessionid[i]);
-	isr = IINCHIP_READ(Sn_IR(0));
-	IINCHIP_WRITE(Sn_IR(0),isr);
-	
-	//open socket in pppoe mode
-	IINCHIP_WRITE(Sn_MR(0),Sn_MR_PPPOE);
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_OPEN);
-	wait_1us(1);
-	// close pppoe connection
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PDISCON);
-	wait_10ms(100);
-	// close socket
-	IINCHIP_WRITE(Sn_CR(0),Sn_CR_CLOSE);
-
-#ifdef __DEF_IINCHIP_DBG__
-	printf("pppterm() end ..\r\n");
-#endif
-
-	return 1;
-}
-#endif
+/*
+@file		w5100.c
+*/
+
+#include <stdio.h>
+#include <string.h>
+
+#include <avr/interrupt.h>
+// #include <avr/io.h> 
+   
+#include "types.h"
+#include "delay.h" // for wait function 
+
+#include "w5100.h"
+
+
+
+#ifdef __DEF_IINCHIP_PPP__
+   #include "md5.h"
+#endif
+
+static uint8 I_STATUS[MAX_SOCK_NUM];
+static uint16 SMASK[MAX_SOCK_NUM]; /**< Variable for Tx buffer MASK in each channel */
+static uint16 RMASK[MAX_SOCK_NUM]; /**< Variable for Rx buffer MASK in each channel */
+static uint16 SSIZE[MAX_SOCK_NUM]; /**< Max Tx buffer size by each channel */
+static uint16 RSIZE[MAX_SOCK_NUM]; /**< Max Rx buffer size by each channel */
+static uint16 SBUFBASEADDRESS[MAX_SOCK_NUM]; /**< Tx buffer base address by each channel */
+static uint16 RBUFBASEADDRESS[MAX_SOCK_NUM]; /**< Rx buffer base address by each channel */
+
+uint8 getISR(uint8 s)
+{
+	return I_STATUS[s];
+}
+
+void putISR(uint8 s, uint8 val)
+{
+   I_STATUS[s] = val;
+}
+
+uint16 getIINCHIP_RxMAX(uint8 s)
+{
+   return RSIZE[s];
+}
+uint16 getIINCHIP_TxMAX(uint8 s)
+{
+   return SSIZE[s];
+}
+uint16 getIINCHIP_RxMASK(uint8 s)
+{
+   return RMASK[s];
+}
+uint16 getIINCHIP_TxMASK(uint8 s)
+{
+   return SMASK[s];
+}
+uint16 getIINCHIP_RxBASE(uint8 s)
+{
+   return RBUFBASEADDRESS[s];
+}
+uint16 getIINCHIP_TxBASE(uint8 s)
+{
+   return SBUFBASEADDRESS[s];
+}
+
+ /**
+@brief	This function writes the data into W5100 registers.
+*/
+uint8 IINCHIP_WRITE(uint16 addr,uint8 data)
+{
+// DIRECT MODE I/F
+#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
+	IINCHIP_ISR_DISABLE();
+	*((vuint8*)(addr)) = data;
+	IINCHIP_ISR_ENABLE();
+#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)	/* INDIRECT MODE I/F */
+	   IINCHIP_ISR_DISABLE();
+	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
+	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
+	   *((vuint8*)IDM_DR)  = data;
+	   IINCHIP_ISR_ENABLE();
+#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
+	   //SPI MODE I/F
+	   IINCHIP_ISR_DISABLE();
+	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
+		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
+	   PORTB = 0x01;                             // CS=1, waiting for SPI start
+	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
+	   SPSR  = 0x01;                             // SPI2X=0 
+	      
+	   PORTB = 0x00;                             // CS=0, SPI start 
+	   SPDR  = 0xF0;
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)(addr & 0x00FF);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = data;
+	   while((SPSR&0x80)==0x00);
+	   PORTB = 0x01;                             // SPI end
+	                                                // CS=1, waiting for SPI start 
+	   IINCHIP_ISR_ENABLE();   
+#else
+	#error "unknown bus type"
+#endif
+	return 1;
+}
+
+
+/**
+@brief	This function reads the value from W5100 registers.
+*/
+uint8 IINCHIP_READ(uint16 addr)
+{
+	uint8 data;
+
+// DIRECT MODE I/F
+
+#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
+	IINCHIP_ISR_DISABLE();
+	data = *((vuint8*)(addr));
+	IINCHIP_ISR_ENABLE();
+#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)   
+	   IINCHIP_ISR_DISABLE();
+	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
+	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
+	   data = *((vuint8*)IDM_DR);
+	   IINCHIP_ISR_ENABLE();
+   
+#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
+	   //SPI MODE I/F
+	   IINCHIP_ISR_DISABLE();
+	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output  
+		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)
+	   PORTB = 0x01;                             // CS=1, waiting for SPI start
+	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
+	   SPSR  = 0x01;                             // SPI2X=0 
+	      
+	   PORTB = 0x00;                             // CS=0, SPI start
+	   SPDR  = 0x0F;
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)((addr & 0xFF00) >> 8);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)(addr & 0x00FF);
+	   while((SPSR&0x80)==0x00);
+	   SPDR = 0x00;                              // write dummy data
+	   while((SPSR&0x80)==0x00);
+	   data = SPDR;                              // read data 
+	   PORTB = 0x01;                             // SPI end
+	                                                // CS=1, waiting for SPI start 
+	   IINCHIP_ISR_ENABLE();
+#else
+	#error "unknown bus type"
+#endif
+	return data;
+}
+
+
+/**
+@brief	This function writes into W5100 memory(Buffer)
+*/ 
+uint16 wiz_write_buf(uint16 addr,uint8* buf,uint16 len)
+{
+#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
+	IINCHIP_ISR_DISABLE();
+   	memcpy((uint8 *)addr, buf, len);
+	IINCHIP_ISR_ENABLE();
+#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
+	   uint16 idx = 0;
+	   IINCHIP_ISR_DISABLE();
+	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
+	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
+	   for (idx = 0; idx < len ; idx++) *((vuint8*)IDM_DR) = buf[idx];
+	   IINCHIP_ISR_ENABLE();
+#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
+	   //SPI MODE I/F
+	   IINCHIP_ISR_DISABLE();
+	   uint16 ii=0;
+      
+	   for(ii=0;ii<len;ii++)
+	   {
+	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
+		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)      
+	   PORTB = 0x01;                             // CS=1, waiting for SPI start
+	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
+	   SPSR  = 0x01;                             // SPI2X=0 
+	      
+	   PORTB = 0x00;                             // CS=0, SPI start
+	   SPDR  = 0xF0;
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)(((addr+ii) & 0xFF00) >> 8);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)((addr+ii) & 0x00FF);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = buf[ii];
+	   while((SPSR&0x80)==0x00);
+	   PORTB = 0x01;                              // SPI end
+	                                                 // CS=1, waiting for SPI start 
+	   }
+	   IINCHIP_ISR_ENABLE();	   
+#else
+	#error "unknown bus type"
+#endif
+	return len;
+}
+
+
+/**
+@brief	This function reads into W5100 memory(Buffer)
+*/ 
+uint16 wiz_read_buf(uint16 addr, uint8* buf,uint16 len)
+{
+#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_DIRECT_MODE__)
+	IINCHIP_ISR_DISABLE();
+	memcpy(buf, (uint8 *)addr, len);
+	IINCHIP_ISR_ENABLE();
+#elif(__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
+	   uint16 idx = 0;
+	   IINCHIP_ISR_DISABLE();
+	   *((vuint8*)IDM_AR0) = (uint8)((addr & 0xFF00) >> 8);
+	   *((vuint8*)IDM_AR1) = (uint8)(addr & 0x00FF);
+	   for (idx = 0; idx < len ; idx++) buf[idx] = *((vuint8*)IDM_DR);
+	   IINCHIP_ISR_ENABLE();
+#elif (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_SPI_MODE__)
+	   //SPI MODE I/F
+	   IINCHIP_ISR_DISABLE();
+	   uint16 iii=0;
+	   for (iii=0; iii<len; iii++)
+      	   {
+	   DDRB  = 0x07;   	                     	// MISO=input, etc.=output
+		                                             // PB3(MISO), PB2(MOSI), PB1(SCK), PB0(/SS)    
+	   PORTB = 0x01;                             // CS=1, waiting for SPI start
+	   SPCR  = 0x50;                             // SPI mode 0, 4MHz
+	   SPSR  = 0x01;                             // SPI2X=0 
+	      
+	   PORTB = 0x00;                             // CS=0, SPI start
+	   SPDR  = 0x0F;
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)(((addr+iii) & 0xFF00) >> 8);
+	   while((SPSR&0x80)==0x00);
+	   SPDR  = (uint8)((addr+iii) & 0x00FF);
+	   while((SPSR&0x80)==0x00);
+	   //for (iii=0; iii<len; iii++)
+	   //{
+	   SPDR = 0x00;                              // write dummy data
+	   while((SPSR&0x80)==0x00);
+	   buf[iii]=SPDR;                            // read data
+	   //}
+	   PORTB = 0x01;                             // SPI end
+	                                                // CS=1, waiting for SPI start 
+	   }
+	   IINCHIP_ISR_ENABLE();
+#else
+	#error "unknown bus type"
+#endif
+	return len;
+}
+
+
+#if (__COMPILER_VERSION__ == __WINAVR_20050214__)
+static void iinchip_irq(void);
+
+void SIG_INTERRUPT4( void ) __attribute__ ((signal));
+void SIG_INTERRUPT4( void )
+{
+	iinchip_irq();
+}
+
+
+/**
+@brief	Socket interrupt routine
+*/ 
+static void iinchip_irq(void)
+{
+#ifdef __DEF_IINCHIP_INT__
+	uint8 int_val;
+	IINCHIP_ISR_DISABLE();
+	int_val = IINCHIP_READ(IR);
+
+	if (int_val & IR_CONFLICT)
+	{
+		printf("IP conflict : %.2x\r\n", int_val);
+	}
+	if (int_val & IR_UNREACH)
+	{
+		printf("INT Port Unreachable : %.2x\r\n", int_val);
+		printf("UIPR0 : %d.%d.%d.%d\r\n", IINCHIP_READ(UIPR0), IINCHIP_READ(UIPR0+1), IINCHIP_READ(UIPR0+2), IINCHIP_READ(UIPR0+3));
+		printf("UPORT0 : %.2x %.2x\r\n", IINCHIP_READ(UPORT0), IINCHIP_READ(UPORT0+1));
+	}
+
+	if (int_val & IR_SOCK(0))
+	{
+		I_STATUS[0] = IINCHIP_READ(Sn_IR(0));
+   	IINCHIP_WRITE(Sn_IR(0), I_STATUS[0] & 0xf);
+	}
+	if (int_val & IR_SOCK(1))
+	{
+		I_STATUS[1] = IINCHIP_READ(Sn_IR(1));
+   	IINCHIP_WRITE(Sn_IR(1), I_STATUS[1] & 0xf);
+	}
+	if (int_val & IR_SOCK(2))
+	{
+		I_STATUS[2] = IINCHIP_READ(Sn_IR(2));
+   	IINCHIP_WRITE(Sn_IR(2), I_STATUS[2] & 0xf);
+	}
+	if (int_val & IR_SOCK(3))
+	{
+		I_STATUS[3] = IINCHIP_READ(Sn_IR(3));
+   	IINCHIP_WRITE(Sn_IR(3), I_STATUS[3] & 0xf);
+	}
+
+	IINCHIP_WRITE(IR, int_val);
+
+	IINCHIP_ISR_ENABLE();
+	
+#endif
+}
+#else	
+/**
+@brief	Socket interrupt routine
+*/ 
+ISR(INT4_vect)
+{
+#ifdef __DEF_IINCHIP_INT__
+	uint8 int_val;
+	IINCHIP_ISR_DISABLE();
+	int_val = IINCHIP_READ(IR);
+
+	if (int_val & IR_CONFLICT)
+	{
+		printf("IP conflict : %.2x\r\n", int_val);
+	}
+	if (int_val & IR_UNREACH)
+	{
+		printf("INT Port Unreachable : %.2x\r\n", int_val);
+		printf("UIPR0 : %d.%d.%d.%d\r\n", IINCHIP_READ(UIPR0), IINCHIP_READ(UIPR0+1), IINCHIP_READ(UIPR0+2), IINCHIP_READ(UIPR0+3));
+		printf("UPORT0 : %.2x %.2x\r\n", IINCHIP_READ(UPORT0), IINCHIP_READ(UPORT0+1));
+	}
+
+	if (int_val & IR_SOCK(0))
+	{
+		I_STATUS[0] = IINCHIP_READ(Sn_IR(0));
+   	IINCHIP_WRITE(Sn_IR(0), I_STATUS[0] & 0xf);
+	}
+	if (int_val & IR_SOCK(1))
+	{
+		I_STATUS[1] = IINCHIP_READ(Sn_IR(1));
+   	IINCHIP_WRITE(Sn_IR(1), I_STATUS[1] & 0xf);
+	}
+	if (int_val & IR_SOCK(2))
+	{
+		I_STATUS[2] = IINCHIP_READ(Sn_IR(2));
+   	IINCHIP_WRITE(Sn_IR(2), I_STATUS[2] & 0xf);
+	}
+	if (int_val & IR_SOCK(3))
+	{
+		I_STATUS[3] = IINCHIP_READ(Sn_IR(3));
+   	IINCHIP_WRITE(Sn_IR(3), I_STATUS[3] & 0xf);
+	}
+
+	IINCHIP_WRITE(IR, int_val);
+
+	IINCHIP_ISR_ENABLE();
+	
+#endif
+}
+#endif
+
+/**
+@brief	This function is for resetting of the iinchip. Initializes the iinchip to work in whether DIRECT or INDIRECT mode
+*/ 
+void iinchip_init(void)
+{
+	setMR(MR_RST);
+
+#if (__DEF_IINCHIP_BUS__ == __DEF_IINCHIP_INDIRECT_MODE__)
+	setMR(MR_IND | MR_AI);
+#ifdef __DEF_IINCHIP_DBG__	
+	printf("MR value is %d \r\n",IINCHIP_READ(MR));
+#endif	
+#endif
+}
+
+
+/**
+@brief	This function set the transmit & receive buffer size as per the channels is used
+
+Note for TMSR and RMSR bits are as follows\n
+bit 1-0 : memory size of channel #0 \n
+bit 3-2 : memory size of channel #1 \n
+bit 5-4 : memory size of channel #2 \n
+bit 7-6 : memory size of channel #3 \n\n
+Maximum memory size for Tx, Rx in the W5100 is 8K Bytes,\n
+In the range of 8KBytes, the memory size could be allocated dynamically by each channel.\n
+Be attentive to sum of memory size shouldn't exceed 8Kbytes\n
+and to data transmission and receiption from non-allocated channel may cause some problems.\n
+If the 8KBytes memory is already  assigned to centain channel, \n
+other 3 channels couldn't be used, for there's no available memory.\n
+If two 4KBytes memory are assigned to two each channels, \n
+other 2 channels couldn't be used, for there's no available memory.\n
+*/ 
+void sysinit(
+	uint8 tx_size, 	/**< tx_size Tx memory size (00 - 1KByte, 01- 2KBtye, 10 - 4KByte, 11 - 8KByte) */
+	uint8 rx_size		/**< rx_size Rx memory size (00 - 1KByte, 01- 2KBtye, 10 - 4KByte, 11 - 8KByte) */
+	)
+{
+	int16 i;
+	int16 ssum,rsum;
+
+#ifdef __DEF_IINCHIP_DBG__
+	printf("sysinit()\r\n"); 
+#endif
+
+	ssum = 0;
+	rsum = 0;
+	
+	IINCHIP_WRITE(TMSR,tx_size); /* Set Tx memory size for each channel */
+	IINCHIP_WRITE(RMSR,rx_size);	 /* Set Rx memory size for each channel */
+
+	SBUFBASEADDRESS[0] = (uint16)(__DEF_IINCHIP_MAP_TXBUF__);		/* Set base address of Tx memory for channel #0 */
+	RBUFBASEADDRESS[0] = (uint16)(__DEF_IINCHIP_MAP_RXBUF__);		/* Set base address of Rx memory for channel #0 */
+
+#ifdef __DEF_IINCHIP_DBG__
+	printf("Channel : SEND MEM SIZE : RECV MEM SIZE\r\n");
+#endif
+
+   for (i = 0 ; i < MAX_SOCK_NUM; i++)       // Set the size, masking and base address of Tx & Rx memory by each channel
+	{
+		SSIZE[i] = (int16)(0);
+		RSIZE[i] = (int16)(0);
+		if (ssum < 8192)
+		{
+         switch((tx_size >> i*2) & 0x03)  // Set Tx memory size
+			{
+			case 0:
+				SSIZE[i] = (int16)(1024);
+				SMASK[i] = (uint16)(0x03FF);
+				break;
+			case 1:
+				SSIZE[i] = (int16)(2048);
+				SMASK[i] = (uint16)(0x07FF);
+				break;
+			case 2:
+				SSIZE[i] = (int16)(4096);
+				SMASK[i] = (uint16)(0x0FFF);
+				break;
+			case 3:
+				SSIZE[i] = (int16)(8192);
+				SMASK[i] = (uint16)(0x1FFF);
+				break;
+			}
+		}
+		if (rsum < 8192)
+		{
+         switch((rx_size >> i*2) & 0x03)     // Set Rx memory size
+			{
+			case 0:
+				RSIZE[i] = (int16)(1024);
+				RMASK[i] = (uint16)(0x03FF);
+				break;
+			case 1:
+				RSIZE[i] = (int16)(2048);
+				RMASK[i] = (uint16)(0x07FF);
+				break;
+			case 2:
+				RSIZE[i] = (int16)(4096);
+				RMASK[i] = (uint16)(0x0FFF);
+				break;
+			case 3:
+				RSIZE[i] = (int16)(8192);
+				RMASK[i] = (uint16)(0x1FFF);
+				break;
+			}
+		}
+		ssum += SSIZE[i];
+		rsum += RSIZE[i];
+
+      if (i != 0)             // Sets base address of Tx and Rx memory for channel #1,#2,#3
+		{
+			SBUFBASEADDRESS[i] = SBUFBASEADDRESS[i-1] + SSIZE[i-1];
+			RBUFBASEADDRESS[i] = RBUFBASEADDRESS[i-1] + RSIZE[i-1];
+		}
+#ifdef __DEF_IINCHIP_DBG__
+		printf("%d : %.4x : %.4x : %.4x : %.4x\r\n", i, (uint16)SBUFBASEADDRESS[i], (uint16)RBUFBASEADDRESS[i], SSIZE[i], RSIZE[i]);
+#endif
+	}
+}
+
+void setMR(uint8 val)
+{
+   *((volatile uint8*)(MR)) = val;
+}
+
+
+/**
+@brief	This function sets up gateway IP address.
+*/ 
+void setGAR(
+	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the Gateway IP address. */
+	)
+{
+	IINCHIP_WRITE((GAR0 + 0),addr[0]);
+	IINCHIP_WRITE((GAR0 + 1),addr[1]);
+	IINCHIP_WRITE((GAR0 + 2),addr[2]);
+	IINCHIP_WRITE((GAR0 + 3),addr[3]);
+}
+void getGWIP(uint8 * addr)
+{
+	addr[0] = IINCHIP_READ((GAR0 + 0));
+	addr[1] = IINCHIP_READ((GAR0 + 1));
+	addr[2] = IINCHIP_READ((GAR0 + 2));
+	addr[3] = IINCHIP_READ((GAR0 + 3));
+}
+
+
+/**
+@brief	It sets up SubnetMask address
+*/ 
+void setSUBR(
+	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the SubnetMask address */
+	)
+{
+	IINCHIP_WRITE((SUBR0 + 0),addr[0]);
+	IINCHIP_WRITE((SUBR0 + 1),addr[1]);
+	IINCHIP_WRITE((SUBR0 + 2),addr[2]);
+	IINCHIP_WRITE((SUBR0 + 3),addr[3]);
+}
+
+
+/**
+@brief	This function sets up MAC address.
+*/ 
+void setSHAR(
+	uint8 * addr	/**< a pointer to a 6 -byte array responsible to set the MAC address. */
+	)
+{
+	IINCHIP_WRITE((SHAR0 + 0),addr[0]);
+	IINCHIP_WRITE((SHAR0 + 1),addr[1]);
+	IINCHIP_WRITE((SHAR0 + 2),addr[2]);
+	IINCHIP_WRITE((SHAR0 + 3),addr[3]);
+	IINCHIP_WRITE((SHAR0 + 4),addr[4]);
+	IINCHIP_WRITE((SHAR0 + 5),addr[5]);
+}
+
+
+/**
+@brief	This function sets up Source IP address.
+*/
+void setSIPR(
+	uint8 * addr	/**< a pointer to a 4 -byte array responsible to set the Source IP address. */
+	)
+{
+	IINCHIP_WRITE((SIPR0 + 0),addr[0]);
+	IINCHIP_WRITE((SIPR0 + 1),addr[1]);
+	IINCHIP_WRITE((SIPR0 + 2),addr[2]);
+	IINCHIP_WRITE((SIPR0 + 3),addr[3]);
+}
+
+
+/**
+@brief	This function gets Interrupt register in common register.
+ */
+uint8 getIR( void )
+{
+   return IINCHIP_READ(IR);
+}
+
+
+
+/**
+@brief	This function sets up Retransmission time.
+
+If there is no response from the peer or delay in response then retransmission 
+will be there as per RTR (Retry Time-value Register)setting
+*/
+void setRTR(uint16 timeout)
+{
+	IINCHIP_WRITE(RTR0,(uint8)((timeout & 0xff00) >> 8));
+	IINCHIP_WRITE((RTR0 + 1),(uint8)(timeout & 0x00ff));
+}
+
+
+/**
+@brief	This function set the number of Retransmission.
+
+If there is no response from the peer or delay in response then recorded time 
+as per RTR & RCR register seeting then time out will occur.
+*/
+void setRCR(uint8 retry)
+{
+	IINCHIP_WRITE(RCR,retry);
+}
+
+
+/**
+@brief	This function set the interrupt mask Enable/Disable appropriate Interrupt. ('1' : interrupt enable)
+
+If any bit in IMR is set as '0' then there is not interrupt signal though the bit is
+set in IR register.
+*/
+void setIMR(uint8 mask)
+{
+	IINCHIP_WRITE(IMR,mask); // must be setted 0x10.
+}
+
+
+/**
+@brief	These below functions are used to get the Gateway, SubnetMask
+		and Source Hardware Address (MAC Address) and Source IP address
+*/
+void getGAR(uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(GAR0);
+	addr[1] = IINCHIP_READ(GAR0+1);
+	addr[2] = IINCHIP_READ(GAR0+2);
+	addr[3] = IINCHIP_READ(GAR0+3);
+}
+void getSUBR(uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(SUBR0);
+	addr[1] = IINCHIP_READ(SUBR0+1);
+	addr[2] = IINCHIP_READ(SUBR0+2);
+	addr[3] = IINCHIP_READ(SUBR0+3);
+}
+void getSHAR(uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(SHAR0);
+	addr[1] = IINCHIP_READ(SHAR0+1);
+	addr[2] = IINCHIP_READ(SHAR0+2);
+	addr[3] = IINCHIP_READ(SHAR0+3);
+	addr[4] = IINCHIP_READ(SHAR0+4);
+	addr[5] = IINCHIP_READ(SHAR0+5);
+}
+void getSIPR(uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(SIPR0);
+	addr[1] = IINCHIP_READ(SIPR0+1);
+	addr[2] = IINCHIP_READ(SIPR0+2);
+	addr[3] = IINCHIP_READ(SIPR0+3);
+}
+
+
+/**
+@brief	These below functions are used to get the Destination Hardware Address (MAC Address), Destination IP address and Destination Port.
+*/
+void getSn_DHAR(SOCKET s, uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(Sn_DHAR0(s));
+	addr[1] = IINCHIP_READ(Sn_DHAR0(s)+1);
+	addr[2] = IINCHIP_READ(Sn_DHAR0(s)+2);
+	addr[3] = IINCHIP_READ(Sn_DHAR0(s)+3);
+	addr[4] = IINCHIP_READ(Sn_DHAR0(s)+4);
+	addr[5] = IINCHIP_READ(Sn_DHAR0(s)+5);
+}
+void setSn_DHAR(SOCKET s, uint8 * addr)
+{
+	IINCHIP_WRITE((Sn_DHAR0(s) + 0),addr[0]);
+	IINCHIP_WRITE((Sn_DHAR0(s) + 1),addr[1]);
+	IINCHIP_WRITE((Sn_DHAR0(s) + 2),addr[2]);
+	IINCHIP_WRITE((Sn_DHAR0(s) + 3),addr[3]);
+	IINCHIP_WRITE((Sn_DHAR0(s) + 4),addr[4]);
+	IINCHIP_WRITE((Sn_DHAR0(s) + 5),addr[5]);
+}
+void getSn_DIPR(SOCKET s, uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(Sn_DIPR0(s));
+	addr[1] = IINCHIP_READ(Sn_DIPR0(s)+1);
+	addr[2] = IINCHIP_READ(Sn_DIPR0(s)+2);
+	addr[3] = IINCHIP_READ(Sn_DIPR0(s)+3);
+}
+void setSn_DIPR(SOCKET s, uint8 * addr)
+{
+	IINCHIP_WRITE((Sn_DIPR0(s) + 0),addr[0]);
+	IINCHIP_WRITE((Sn_DIPR0(s) + 1),addr[1]);
+	IINCHIP_WRITE((Sn_DIPR0(s) + 2),addr[2]);
+	IINCHIP_WRITE((Sn_DIPR0(s) + 3),addr[3]);
+}
+void getSn_DPORT(SOCKET s, uint8 * addr)
+{
+	addr[0] = IINCHIP_READ(Sn_DPORT0(s));
+	addr[1] = IINCHIP_READ(Sn_DPORT0(s)+1);
+}
+void setSn_DPORT(SOCKET s, uint8 * addr)
+{
+	IINCHIP_WRITE((Sn_DPORT0(s) + 0),addr[0]);
+	IINCHIP_WRITE((Sn_DPORT0(s) + 1),addr[1]);
+}
+
+
+/**
+@brief	This sets the maximum segment size of TCP in Active Mode), while in Passive Mode this is set by peer
+*/
+void setSn_MSS(SOCKET s, uint16 Sn_MSSR0)
+{
+	IINCHIP_WRITE(Sn_MSSR0(s),(uint8)((Sn_MSSR0 & 0xff00) >> 8));
+	IINCHIP_WRITE((Sn_MSSR0(s) + 1),(uint8)(Sn_MSSR0 & 0x00ff));
+}
+
+void setSn_TTL(SOCKET s, uint8 ttl)
+{
+   IINCHIP_WRITE(Sn_TTL(s), ttl);
+}
+
+
+/**
+@brief	These below function is used to setup the Protocol Field of IP Header when
+		executing the IP Layer RAW mode.
+*/
+void setSn_PROTO(SOCKET s, uint8 proto)
+{
+	IINCHIP_WRITE(Sn_PROTO(s),proto);
+}
+
+
+/**
+@brief	get socket interrupt status
+
+These below functions are used to read the Interrupt & Soket Status register
+*/
+uint8 getSn_IR(SOCKET s)
+{
+   return IINCHIP_READ(Sn_IR(s));
+}
+
+
+/**
+@brief	 get socket status
+*/
+uint8 getSn_SR(SOCKET s)
+{
+   return IINCHIP_READ(Sn_SR(s));
+}
+
+
+/**
+@brief	get socket TX free buf size
+
+This gives free buffer size of transmit buffer. This is the data size that user can transmit.
+User shuold check this value first and control the size of transmitting data
+*/
+uint16 getSn_TX_FSR(SOCKET s)
+{
+	uint16 val=0,val1=0;
+	do
+	{
+		val1 = IINCHIP_READ(Sn_TX_FSR0(s));
+		val1 = (val1 << 8) + IINCHIP_READ(Sn_TX_FSR0(s) + 1);
+      if (val1 != 0)
+		{
+   			val = IINCHIP_READ(Sn_TX_FSR0(s));
+   			val = (val << 8) + IINCHIP_READ(Sn_TX_FSR0(s) + 1);
+		}
+	} while (val != val1);
+   return val;
+}
+
+
+/**
+@brief	 get socket RX recv buf size
+
+This gives size of received data in receive buffer. 
+*/
+uint16 getSn_RX_RSR(SOCKET s)
+{
+	uint16 val=0,val1=0;
+	do
+	{
+		val1 = IINCHIP_READ(Sn_RX_RSR0(s));
+		val1 = (val1 << 8) + IINCHIP_READ(Sn_RX_RSR0(s) + 1);
+      if(val1 != 0)
+		{
+   			val = IINCHIP_READ(Sn_RX_RSR0(s));
+   			val = (val << 8) + IINCHIP_READ(Sn_RX_RSR0(s) + 1);
+		}
+	} while (val != val1);
+   return val;
+}
+
+
+/**
+@brief	 This function is being called by send() and sendto() function also. 
+
+This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
+register. User should read upper byte first and lower byte later to get proper value.
+*/
+void send_data_processing(SOCKET s, uint8 *data, uint16 len)
+{
+	uint16 ptr;
+	ptr = IINCHIP_READ(Sn_TX_WR0(s));
+	ptr = ((ptr & 0x00ff) << 8) + IINCHIP_READ(Sn_TX_WR0(s) + 1);
+	write_data(s, data, (uint8 *)(ptr), len);
+	ptr += len;
+	IINCHIP_WRITE(Sn_TX_WR0(s),(uint8)((ptr & 0xff00) >> 8));
+	IINCHIP_WRITE((Sn_TX_WR0(s) + 1),(uint8)(ptr & 0x00ff));
+}
+
+
+/**
+@brief	This function is being called by recv() also.
+
+This function read the Rx read pointer register
+and after copy the data from receive buffer update the Rx write pointer register.
+User should read upper byte first and lower byte later to get proper value.
+*/
+void recv_data_processing(SOCKET s, uint8 *data, uint16 len)
+{
+	uint16 ptr;
+	ptr = IINCHIP_READ(Sn_RX_RD0(s));
+	ptr = ((ptr & 0x00ff) << 8) + IINCHIP_READ(Sn_RX_RD0(s) + 1);
+#ifdef __DEF_IINCHIP_DBG__
+	printf("ISR_RX: rd_ptr : %.4x\r\n", ptr);
+#endif
+	read_data(s, (uint8 *)ptr, data, len); // read data
+	ptr += len;
+	IINCHIP_WRITE(Sn_RX_RD0(s),(uint8)((ptr & 0xff00) >> 8));
+	IINCHIP_WRITE((Sn_RX_RD0(s) + 1),(uint8)(ptr & 0x00ff));
+}
+
+
+/**
+@brief	for copy the data form application buffer to Transmite buffer of the chip.
+
+This function is being used for copy the data form application buffer to Transmite
+buffer of the chip. It calculate the actual physical address where one has to write
+the data in transmite buffer. Here also take care of the condition while it exceed
+the Tx memory uper-bound of socket.
+*/
+void write_data(SOCKET s, vuint8 * src, vuint8 * dst, uint16 len)
+{
+	uint16 size;
+	uint16 dst_mask;
+	uint8 * dst_ptr;
+
+	dst_mask = (uint16)dst & getIINCHIP_TxMASK(s);
+	dst_ptr = (uint8 *)(getIINCHIP_TxBASE(s) + dst_mask);
+	
+	if (dst_mask + len > getIINCHIP_TxMAX(s)) 
+	{
+		size = getIINCHIP_TxMAX(s) - dst_mask;
+		wiz_write_buf((uint16)dst_ptr, (uint8*)src, size);
+		src += size;
+		size = len - size;
+		dst_ptr = (uint8 *)(getIINCHIP_TxBASE(s));
+		wiz_write_buf((uint16)dst_ptr, (uint8*)src, size);
+	} 
+	else
+	{
+		wiz_write_buf((uint16)dst_ptr, (uint8*)src, len);
+	}
+}
+
+
+/**
+@brief	This function is being used for copy the data form Receive buffer of the chip to application buffer.
+
+It calculate the actual physical address where one has to read
+the data from Receive buffer. Here also take care of the condition while it exceed
+the Rx memory uper-bound of socket.
+*/
+void read_data(SOCKET s, vuint8 * src, vuint8 * dst, uint16 len)
+{
+	uint16 size;
+	uint16 src_mask;
+	uint8 * src_ptr;
+
+	src_mask = (uint16)src & getIINCHIP_RxMASK(s);
+	src_ptr = (uint8 *)(getIINCHIP_RxBASE(s) + src_mask);
+	
+	if( (src_mask + len) > getIINCHIP_RxMAX(s) ) 
+	{
+		size = getIINCHIP_RxMAX(s) - src_mask;
+		wiz_read_buf((uint16)src_ptr, (uint8*)dst,size);
+		dst += size;
+		size = len - size;
+		src_ptr = (uint8 *)(getIINCHIP_RxBASE(s));
+		wiz_read_buf((uint16)src_ptr, (uint8*) dst,size);
+	} 
+	else
+	{
+		wiz_read_buf((uint16)src_ptr, (uint8*) dst,len);
+	}
+}
+
+
+#ifdef __DEF_IINCHIP_PPP__
+#define PPP_OPTION_BUF_LEN 64
+
+uint8 pppinit_in(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen);
+
+
+/**
+@brief	make PPPoE connection
+@return	1 => success to connect, 2 => Auth fail, 3 => timeout, 4 => Auth type not support
+
+*/
+uint8 pppinit(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen)
+{
+	uint8 ret;
+	uint8 isr;
+	
+	// PHASE0. W5100 PPPoE(ADSL) setup
+	// enable pppoe mode
+	printf("-- PHASE 0. W5100 PPPoE(ADSL) setup process --\r\n");
+	printf("\r\n");
+	IINCHIP_WRITE(MR,IINCHIP_READ(MR) | MR_PPPOE);
+
+	// open socket in pppoe mode
+	isr = IINCHIP_READ(Sn_IR(0));// first clear isr(0), W5100 at present time
+	IINCHIP_WRITE(Sn_IR(0),isr);
+	
+	IINCHIP_WRITE(PTIMER,200); // 5sec timeout
+	IINCHIP_WRITE(PMAGIC,0x01); // magic number
+	IINCHIP_WRITE(Sn_MR(0),Sn_MR_PPPOE);
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_OPEN);
+	
+	ret = pppinit_in(id, idlen, passwd, passwdlen);
+
+	// close ppp connection socket
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_CLOSE);
+	return ret;
+}
+
+
+uint8 pppinit_in(uint8 * id, uint8 idlen, uint8 * passwd, uint8 passwdlen)
+{
+	uint8 loop_idx = 0;
+	uint8 isr = 0;
+	uint8 buf[PPP_OPTION_BUF_LEN];
+	uint16 len;
+	uint8 str[PPP_OPTION_BUF_LEN];
+	uint8 str_idx,dst_idx;
+
+   // PHASE1. PPPoE Discovery
+	// start to connect pppoe connection
+	printf("-- PHASE 1. PPPoE Discovery process --");
+	printf(" ok\r\n");
+	printf("\r\n");
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCON);
+	wait_10ms(100);
+
+	loop_idx = 0;
+	//check whether PPPoE discovery end or not
+	while (!(IINCHIP_READ(Sn_IR(0)) & Sn_IR_PNEXT))
+	{
+		printf(".");
+		if (loop_idx++ == 10) // timeout
+		{
+			printf("timeout before LCP\r\n"); 
+			return 3;
+		}
+		wait_10ms(100);
+	}
+
+   // PHASE2. LCP process
+	printf("-- PHASE 2. LCP process --");
+		
+	// send LCP Request
+	{
+		// Magic number option
+		// option format (type value + length value + data)
+	   // write magic number value
+		buf[0] = 0x05; // type value
+		buf[1] = 0x06; // length value
+		buf[2] = 0x01; buf[3] = 0x01; buf[4] = 0x01; buf[5]= 0x01; // data
+		// for MRU option, 1492 0x05d4  
+		// buf[6] = 0x01; buf[7] = 0x04; buf[8] = 0x05; buf[9] = 0xD4;
+	}
+	send_data_processing(0, buf, 0x06);
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send request 
+	wait_10ms(100);
+
+	while (!((isr = IINCHIP_READ(Sn_IR(0))) & Sn_IR_PNEXT))
+	{
+		if (isr & Sn_IR_PRECV) // Not support option
+		{
+			len = getSn_RX_RSR(0);
+			if ( len > 0 )
+			{
+				recv_data_processing(0, str, len);
+				IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
+				// for debug
+				//printf("LCP proc\r\n"); for (i = 0; i < len; i++) printf ("%02x ", str[i]); printf("\r\n");
+				// get option length
+				len = str[4]; len = ((len & 0x00ff) << 8) + str[5];
+				len += 2;
+				str_idx = 6; dst_idx = 0; // ppp header is 6 byte, so starts at 6.
+				do 
+				{
+					if ((str[str_idx] == 0x01) || (str[str_idx] == 0x02) || (str[str_idx] == 0x03) || (str[str_idx] == 0x05))
+					{
+						// skip as length of support option. str_idx+1 is option's length.
+						str_idx += str[str_idx+1];
+					}
+					else
+					{
+						// not support option , REJECT
+						memcpy((uint8 *)(buf+dst_idx), (uint8 *)(str+str_idx), str[str_idx+1]);
+						dst_idx += str[str_idx+1]; str_idx += str[str_idx+1];
+					}
+				} while (str_idx != len);
+	   			// for debug
+	   			// printf("LCP dst proc\r\n"); for (i = 0; i < dst_idx; i++) printf ("%02x ", dst[i]); printf("\r\n");
+	   
+	   			// send LCP REJECT packet
+	   			send_data_processing(0, buf, dst_idx);
+	   			IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCJ);
+      			}
+		}
+		printf(".");
+		if (loop_idx++ == 10) // timeout
+		{
+			printf("timeout after LCP\r\n");
+			return 3;
+		}
+		wait_10ms(100);
+	}
+	printf(" ok\r\n");
+	printf("\r\n");
+
+	printf("-- PHASE 3. PPPoE(ADSL) Authentication mode --\r\n");
+	printf("Authentication protocol : %.2x %.2x, ", IINCHIP_READ(PATR0), IINCHIP_READ(PATR0+1));
+
+	loop_idx = 0;
+	if (IINCHIP_READ(PATR0) == 0xc0 && IINCHIP_READ(PATR0+1) == 0x23)
+	{
+		printf("PAP\r\n"); // in case of adsl normally supports PAP.
+		// send authentication data
+		// copy (idlen + id + passwdlen + passwd)
+		buf[loop_idx] = idlen; loop_idx++;
+		memcpy((uint8 *)(buf+loop_idx), (uint8 *)(id), idlen); loop_idx += idlen;
+		buf[loop_idx] = passwdlen; loop_idx++;
+		memcpy((uint8 *)(buf+loop_idx), (uint8 *)(passwd), passwdlen); loop_idx += passwdlen;
+		send_data_processing(0, buf, loop_idx);
+		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
+		wait_10ms(100);
+	}	
+	else if (IINCHIP_READ(PATR0) == 0xc2 && IINCHIP_READ(PATR0+1) == 0x23)
+	{
+		uint8 chal_len;
+		md5_ctx context;
+		uint8  digest[16];
+
+		len = getSn_RX_RSR(0);
+		if ( len > 0 )
+		{
+			recv_data_processing(0, str, len);
+			IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
+#ifdef __DEF_IINCHIP_DBG__
+			printf("recv CHAP\r\n");
+			{
+				int16 i;
+				
+				for (i = 0; i < 32; i++) 
+					printf ("%02x ", str[i]);
+			}
+			printf("\r\n");
+#endif
+// str is C2 23 xx CHAL_ID xx xx CHAP_LEN CHAP_DATA
+// index  0  1  2  3       4  5  6        7 ...
+
+			memset(buf,0x00,64);
+			buf[loop_idx] = str[3]; loop_idx++; // chal_id
+			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(passwd), passwdlen); loop_idx += passwdlen; //passwd
+			chal_len = str[6]; // chal_id
+			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(str+7), chal_len); loop_idx += chal_len; //challenge
+			buf[loop_idx] = 0x80;
+#ifdef __DEF_IINCHIP_DBG__
+			printf("CHAP proc d1\r\n");
+			{
+				int16 i;
+				for (i = 0; i < 64; i++) 
+					printf ("%02x ", buf[i]);
+			}
+			printf("\r\n");
+#endif
+
+			md5_init(&context);
+			md5_update(&context, buf, loop_idx);
+			md5_final(digest, &context);
+
+#ifdef __DEF_IINCHIP_DBG__
+			printf("CHAP proc d1\r\n");
+			{
+				int16 i;				
+				for (i = 0; i < 16; i++) 
+					printf ("%02x", digest[i]);
+			}
+			printf("\r\n");
+#endif
+			loop_idx = 0;
+			buf[loop_idx] = 16; loop_idx++; // hash_len
+			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(digest), 16); loop_idx += 16; // hashed value
+			memcpy((uint8 *)(buf+loop_idx), (uint8 *)(id), idlen); loop_idx += idlen; // id
+			send_data_processing(0, buf, loop_idx);
+			IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
+			wait_10ms(100);
+		}
+	}
+	else
+	{
+		printf("Not support\r\n");
+#ifdef __DEF_IINCHIP_DBG__
+		printf("Not support PPP Auth type: %.2x%.2x\r\n",IINCHIP_READ(PATR0), IINCHIP_READ(PATR0+1));
+#endif
+		return 4;
+	}
+	printf("\r\n");
+
+	printf("-- Waiting for PPPoE server's admission --");
+	loop_idx = 0;
+	while (!((isr = IINCHIP_READ(Sn_IR(0))) & Sn_IR_PNEXT))
+	{
+		if (isr & Sn_IR_PFAIL)
+		{
+			printf("failed\r\nReinput id, password..\r\n");
+			return 2;
+		}
+		printf(".");
+		if (loop_idx++ == 10) // timeout
+		{
+			printf("timeout after PAP\r\n");
+			return 3;
+		}
+		wait_10ms(100);
+	}
+	printf("ok\r\n");
+	printf("\r\n");
+	printf("-- PHASE 4. IPCP process --");
+	// IP Address
+	buf[0] = 0x03; buf[1] = 0x06; buf[2] = 0x00; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00;
+	send_data_processing(0, buf, 6);
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR);
+	wait_10ms(100);
+
+	loop_idx = 0;
+	while (1)
+	{
+		if (IINCHIP_READ(Sn_IR(0)) & Sn_IR_PRECV)
+		{
+			len = getSn_RX_RSR(0);
+			if ( len > 0 )
+			{
+				recv_data_processing(0, str, len);
+				IINCHIP_WRITE(Sn_CR(0),Sn_CR_RECV);
+	   			//for debug
+	   			//printf("IPCP proc\r\n"); for (i = 0; i < len; i++) printf ("%02x ", str[i]); printf("\r\n");
+	   			str_idx = 6; dst_idx = 0;
+	   			if (str[2] == 0x03) // in case of NAK
+	   			{
+	   				do 
+	   				{
+	   					if (str[str_idx] == 0x03) // request only ip information
+	   					{
+	   						memcpy((uint8 *)(buf+dst_idx), (uint8 *)(str+str_idx), str[str_idx+1]);
+	   						dst_idx += str[str_idx+1]; str_idx += str[str_idx+1];
+	   					}
+	   					else
+	   					{
+	   						// skip byte
+	   						str_idx += str[str_idx+1];
+	   					}
+	   					// for debug
+	   					//printf("s: %d, d: %d, l: %d", str_idx, dst_idx, len);
+	   				} while (str_idx != len);
+	   				send_data_processing(0, buf, dst_idx);
+	   				IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send ipcp request
+	   				wait_10ms(100);
+	   				break;
+	   			}
+			}
+		}
+		printf(".");
+		if (loop_idx++ == 10) // timeout
+		{
+			printf("timeout after IPCP\r\n");
+			return 3;
+		}
+		wait_10ms(100);
+		send_data_processing(0, buf, 6);
+		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); //ipcp re-request
+	}
+
+	loop_idx = 0;
+	while (!(IINCHIP_READ(Sn_IR(0)) & Sn_IR_PNEXT))
+	{
+		printf(".");
+		if (loop_idx++ == 10) // timeout
+		{
+			printf("timeout after IPCP NAK\r\n");
+			return 3;
+		}
+		wait_10ms(100);
+		IINCHIP_WRITE(Sn_CR(0),Sn_CR_PCR); // send ipcp request
+	}
+	printf("ok\r\n");
+	printf("\r\n");
+	return 1;
+	// after this function, User must save the pppoe server's mac address and pppoe session id in current connection
+}
+
+
+/**
+@brief	terminate PPPoE connection
+*/
+uint8 pppterm(uint8 * mac, uint8 * sessionid)
+{
+	uint16 i;
+	uint8 isr;
+#ifdef __DEF_IINCHIP_DBG__
+	printf("pppterm()\r\n");
+#endif
+	/* Set PPPoE bit in MR(Common Mode Register) : enable socket0 pppoe */
+	IINCHIP_WRITE(MR,IINCHIP_READ(MR) | MR_PPPOE);
+	
+	// write pppoe server's mac address and session id 
+	// must be setted these value.
+	for (i = 0; i < 6; i++) IINCHIP_WRITE((Sn_DHAR0(0)+i),mac[i]);
+	for (i = 0; i < 2; i++) IINCHIP_WRITE((Sn_DPORT0(0)+i),sessionid[i]);
+	isr = IINCHIP_READ(Sn_IR(0));
+	IINCHIP_WRITE(Sn_IR(0),isr);
+	
+	//open socket in pppoe mode
+	IINCHIP_WRITE(Sn_MR(0),Sn_MR_PPPOE);
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_OPEN);
+	wait_1us(1);
+	// close pppoe connection
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_PDISCON);
+	wait_10ms(100);
+	// close socket
+	IINCHIP_WRITE(Sn_CR(0),Sn_CR_CLOSE);
+
+#ifdef __DEF_IINCHIP_DBG__
+	printf("pppterm() end ..\r\n");
+#endif
+
+	return 1;
+}
+#endif