//---------------------------------------------------------------------------
// 	 主控程序包括物理層初始化,	CPU初始化,媒體訪問控制,以太網傳輸等幾部分
// 	 其中my_ipaddr = 0xC0A8000AL為本設備的IP地址對應不同的網絡要求可對其進行修改
// 	 MAC地址是CP2200出廠前是設置好的一般不需修改
//   此程序為通用TCP/IP協議對不同的MCU應用CP2200進行以太網通訊只需修改CPU初始化部分
//   及定時器配置部分及ADC部分就可以.
//---------------------------------------------------------------------------

#include <string.h>
#include "C8051f040.h"
#include "net.h"
#include "cp220x_reg.h"
#include "timer.h"
#include "analog.h"
#include "arp.h"
#include "tcp.h"
#include "http.h"
#include "ip.h"
MACADDRESS xdata MYMAC; 


// Global variables
UINT volatile event_word;
char xdata text[20];  
UCHAR idata debug;
UCHAR idata rcve_buf_allocated;
#define LINK_ERROR  0x20
char xdata inbuf1[1500] _at_ 1000;
char xdata outbuf1[1500] _at_ 2500;

// This sets my hardware address to 00:01:02:03:04:05
UCHAR xdata my_hwaddr[6] _at_ 4001; 

// Hardware addr to send a broadcast
UCHAR code broadcast_hwaddr[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};

// This sets my IP address to 192.168.0.10
ULONG code  my_ipaddr = 0xC0A8000AL;

// This sets my subnet mask to 255.255.255.0
ULONG code my_subnet = 0xFFFFFF00L;


ULONG code gateway_ipaddr = 0L;

//--------------------------------------------------------------------------
// Initialize the memory management routines
// Initialize variables declared in main
//--------------------------------------------------------------------------

unsigned int Count1msInc;
unsigned char Count1ms,Count10ms,Count1s;
unsigned char TimeSecond,TimeMinute;
unsigned char PHY_Init(void);
void MAC_Init(void);
UCHAR xdata * rcve_frame(void);
void eth_rcve(UCHAR xdata * inbuf);
void MAC_Write(unsigned char mac_reg_offset, unsigned int mac_reg_data);
void MAC_SetAddress(MACADDRESS* pMAC);
void CP220x_Send( UCHAR xdata * outbuf, UINT len);

/***********************************************************************/
//初始化內存部分
/**********************************************************************/

void init_main(void)
{
	// Start the memory pool for incoming and outgoing Ethernet
	// frames at 1000, with length = 1500 bytes. Memory below 500
	// is used for program variables
    //	init_mempool((void xdata *)1000, 1500);
	memset(text, 0, sizeof(text));
	event_word = 0;
	rcve_buf_allocated = FALSE;
	debug = FALSE;
}
/************************************************************************/
//初始化MCU端口部分	采用端口非復用的方式,將地址線與數據線分開
/***********************************************************************/
void PORT_Init (void)
{
    char SFRPAGE_SAVE = SFRPAGE;        
    unsigned char i;
    SFRPAGE = CONFIG_PAGE;
	 P4MDOUT = 0XFF;
	 P5MDOUT = 0XFF;
	 P6MDOUT = 0XFF;
	 P7MDOUT = 0XFF;
	 P3MDOUT |= 0X40;
     XBR0 = 0x84;
     XBR1 = 0x04;
     XBR2 = 0x40;

     for(i=0;i<200;i++);
     SFRPAGE = EMI0_PAGE;
     EMI0CF = 0xFB;              
     EMI0TC = 0xef;     
                              
                              
     EMI0CN = 0x20;     
  
     SFRPAGE = SFRPAGE_SAVE;            
}

/***********************************************************************/
//設置定時器0
/**********************************************************************/
void Timer0_Init (void)
{
   	char SFRPAGE_SAVE = SFRPAGE;        
	SFRPAGE = TIMER01_PAGE;
	CKCON|=0x8;
   	TMOD|=0x1;    	
	Count10ms=10;
	Count1s=0;
   	TR0 = 0;                         
   	TH0 = (-SYSCLK/1000) >> 8;    		
   	TL0 = -SYSCLK/1000;
   	TR0 = 1;   
   	IE|= 0x2; 
    SFRPAGE = SFRPAGE_SAVE;             
}
/**********************************************************************/
//選擇系統時鐘
/**********************************************************************/
void SYSCLK_Init (void)
{
    int i;                              
	char SFRPAGE_SAVE = SFRPAGE;       

    SFRPAGE   = CONFIG_PAGE;
    OSCXCN    = 0x67;
    for (i = 0; i < 3000; i++);  
    while ((OSCXCN & 0x80) == 0);
    CLKSEL    = 0x01;
	SFRPAGE = SFRPAGE_SAVE;             

}
/********************************************************************/
//定時器0中斷  用于定時
/********************************************************************/
void Timer0_ISR (void) interrupt 1  //1ms
{
	TH0 = (-SYSCLK/1000) >> 8;  
   	TL0 = -SYSCLK/1000;
	if (Count1ms) Count1ms--;
	Count1msInc++;
	if (Count10ms) Count10ms--;
	else
	{
		Count10ms=10;    			//10ms
		if (Count1s) Count1s--;
		else
		{
			Count1s=100;			//1s
			TimeSecond++;
			if (TimeSecond>=60)
			{
				TimeSecond=0;		//1min
				TimeMinute++;
				if	(TimeMinute==60)	TimeMinute=0;
			}
		}
	}
}

 /*******************************************************************/
 //延時程序
 /*******************************************************************/
void Delay1ms(unsigned char T)
{
	Count1ms=T;
	while (Count1ms);
}

/********************************************************************/
//上位機與下位進行交互程序
/********************************************************************/
void LightONOFF(bit b)
{

}	

 void CP220x_RST_Low(void);
	//加延時
 void   CP220x_RST_High(void);
/*******************************************************************/

//主程序

/*******************************************************************/
void main (void)
{
	UINT  event_word_copy;
	UCHAR xdata * inbuf;
	unsigned char error_code;
//	unsigned int num_bytes;
          	
  	WDTCN = 0xDE;                       // 關看門狗定時器
	WDTCN = 0xAD;


	SYSCLK_Init ();                     // 初始化系統時鐘
	Timer0_Init();
	PORT_Init ();                       // 初始化端口
    
	init_timer2();
	init_main();
	init_tcp();
	init_http();
 	EA=1;
	init_adc();
	init_arp();

	CP220x_RST_Low();
	Delay1ms(200); 
	Delay1ms(200); 
	Delay1ms(200); 
	Delay1ms(200);             
	CP220x_RST_High();
    INT0EN = 0x03;                         
    INT1EN = 0x00;							 // 清除中斷標志位
   
                           
    error_code = PHY_Init();  	     
    MAC_Init();    
    ET2 = 1;		            
	RXCN = RXCLEAR;
    EA  =  1;
    IP = 0x01;
    SFRPAGE = EMI0_PAGE;
	
   // 下面代碼為設置何種事件中斷發生,以做出相應的處理
	while (1)
   {
      
	   if(CPINFOH & RXVALID)  
          event_word |= EVENT_ETH_ARRIVED;
     	  event_word_copy = event_word;
		  EA = 1;
       if (event_word_copy & EVENT_ETH_ARRIVED)
          {
              EA = 0;
              event_word &= (~EVENT_ETH_ARRIVED);
              EA = 1;
              inbuf = rcve_frame();
              if (inbuf != NULL)
                {
                  eth_rcve(inbuf); 
         	     if (rcve_buf_allocated)
                  {
				   rcve_buf_allocated = FALSE;
                  }
                 }
           }
      
                 	       
      else if (event_word_copy & EVENT_TCP_RETRANSMIT) //判斷TCP傳輸是否超時
      {
         event_word &= (~EVENT_TCP_RETRANSMIT);
         EA = 1;
         tcp_retransmit();
 		}

       else if (event_word_copy & EVENT_TCP_INACTIVITY)//判斷TCP休止時間
      {
         event_word &= (~EVENT_TCP_INACTIVITY);
         EA = 1;
         tcp_inactivity();
 		}

     
 		else if (event_word_copy & EVENT_ARP_RETRANSMIT) //判斷ARP傳輸是否超時
      {
         event_word &= (~EVENT_ARP_RETRANSMIT);
         EA = 1;
         arp_retransmit();
		}

     else if (event_word_copy & EVENT_AGE_ARP_CACHE)
      {
         event_word &= (~EVENT_AGE_ARP_CACHE);
			EA = 1;
         age_arp_cache();
		}

		else if (event_word_copy & EVENT_READ_ANALOG)	//讀AD輸入的時間
      {
         event_word &= (~EVENT_READ_ANALOG);
         EA = 1;
		
			read_analog_inputs();
      }

	
		else if (event_word_copy & EVENT_RS232_ARRIVED)
      {
         event_word &= (~EVENT_RS232_ARRIVED);
         EA = 1;
      }
   }
}
/**********************************************************************/
//CP2200片選置低
/*********************************************************************/

void CP220x_RST_Low(void)
{
   char SFRPAGE_SAVE = SFRPAGE;        
   SFRPAGE = CONFIG_PAGE;
   P4 &= ~0x20;                        
   SFRPAGE=SFRPAGE_SAVE;
}

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

//CP2200片選置高
/***********************************************************************/
void CP220x_RST_High(void)
{
      char SFRPAGE_SAVE = SFRPAGE;       
   SFRPAGE = CONFIG_PAGE;

    P4 |= 0x20;                       
   SFRPAGE=SFRPAGE_SAVE;
}
/***********************************************************************/
//物理層出始化

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