main.c

基于atmel公司的at91rm9200的以太网驱动

//*----------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : main.c
//* Object              : main application written in C
//* Creation            : Hi   11/18/2002
//*
//*----------------------------------------------------------------------------
#include "AT91RM9200.h"
#include "lib_AT91RM9200.h"
#include "Emac.h"
#include <stdio.h>
#include <string.h>


//* Interrupt Handlers
extern void AT91F_ST_ASM_HANDLER(void);
//* function in init.c
extern void AT91F_DBGU_Printk(char *buffer);
//* functions in Emac.c
extern int AT91F_EmacEntry(void);
extern int AT91F_ProcessEmacPacket(AT91PS_IPheader pHeader);

//* Message buffer
char MsgBuffer[256];

//* system timer counter
unsigned int StTick = 0;


//*----------------------------------------------------------------------------
//* \fn    AT91F_GetTickCount
//* \brief This function returns the value of the system timer
//* This function is for demonstration purpose only
//*----------------------------------------------------------------------------
unsigned int AT91F_GetTickCount(void)
{
	return(StTick);
}


//*----------------------------------------------------------------------------
//* \fn    AT91F_ST_HANDLER
//* \brief This function is invoked by main
//* This function is for demonstration purpose only
//*----------------------------------------------------------------------------
void AT91F_ST_HANDLER(void)
{
volatile int StStatus;
	// Read the system timer status register
	StStatus = *(AT91C_ST_SR);
	StTick++;
}


//*----------------------------------------------------------------------------
//* \fn    AT91F_DisplayIpPacket
//* \brief This function is invoked by main
//* This function is for demonstration purpose only
//*----------------------------------------------------------------------------
void AT91F_DisplayIpPacket(AT91PS_IPheader pIpHeader)
{
char address[6];

	AT91F_DBGU_Printk("\n\n\r-I- ================ IP HEADER ======================\n\r");
	sprintf(MsgBuffer, "\n\r IP Version        = v.%d",pIpHeader->ip_hl_v & 0x0F);
	AT91F_DBGU_Printk(MsgBuffer);

	sprintf(MsgBuffer, "\n\r Header Length     = %d",(pIpHeader->ip_hl_v & 0xF0) >> 2);
	AT91F_DBGU_Printk(MsgBuffer);

	sprintf(MsgBuffer, "\n\r Type of service   = 0x%x",pIpHeader->ip_tos);
	AT91F_DBGU_Printk(MsgBuffer);

	sprintf(MsgBuffer, "\n\r Total IP Length   = %d",(pIpHeader->ip_len) >> 8);
	AT91F_DBGU_Printk(MsgBuffer);

	sprintf(MsgBuffer, "\n\r ID                = 0x%X",(pIpHeader->ip_id));
	AT91F_DBGU_Printk(MsgBuffer);

	sprintf(MsgBuffer, "\n\r Header Checksum   = 0x%X",(pIpHeader->ip_sum));
	AT91F_DBGU_Printk(MsgBuffer);


	switch(pIpHeader->ip_p) {
		case PROT_IP:
			sprintf(MsgBuffer, "\n\r Protocol          = %s","IP");
		break;
	
		case PROT_ICMP:
			sprintf(MsgBuffer, "\n\r Protocol          = %s","ICMP");
		break;
		default:
			sprintf(MsgBuffer, "\n\r Protocol          = 0x%X",pIpHeader->ip_p);
		break;
	}
	AT91F_DBGU_Printk(MsgBuffer);

	strncpy((char *)address, (const char *)(pIpHeader->ip_src), 4);
	address[4] = 0;

	sprintf(MsgBuffer, "\n\r IP Src Address    = %d:%d:%d:%d", 
		                                         pIpHeader->ip_src[0], 
	                                             pIpHeader->ip_src[1],
	                                             pIpHeader->ip_src[2],
	                                             pIpHeader->ip_src[3]
	);
	AT91F_DBGU_Printk(MsgBuffer);

	strncpy((char *)address, (const char *)pIpHeader->ip_dst, 4);
	address[4] = 0;

	sprintf(MsgBuffer, "\n\r IP Dest Address   = %d:%d:%d:%d",
		                                         pIpHeader->ip_dst[0], 
	                                             pIpHeader->ip_dst[1],
	                                             pIpHeader->ip_dst[2],
	                                             pIpHeader->ip_dst[3]
	                                             );
	AT91F_DBGU_Printk(MsgBuffer);
}



//*----------------------------------------------------------------------------
//* \fn    main
//* \brief 
//* 
//*----------------------------------------------------------------------------
int main()
{
	AT91S_IPheader IpHeader;
	int status;

	AT91F_DBGU_Printk("\n\n\r-I- ======================================\n\r");
	AT91F_DBGU_Printk("-I- AT91RM9200 EMAC Test\n\r");
	AT91F_DBGU_Printk("-I- --------------------------------------\n\r");

	//* System Timer initialization
	AT91F_ST_SetPeriodInterval(AT91C_BASE_ST, AT91C_ST_PITS);
	AT91F_ST_EnableIt(AT91C_BASE_ST, AT91C_ST_PITS);
	AT91F_AIC_ConfigureIt (
							AT91C_BASE_AIC,                        // AIC base address
							AT91C_ID_SYS,                          // System peripheral ID
							AT91C_AIC_PRIOR_HIGHEST,               // Max priority
							AT91C_AIC_SRCTYPE_INT_LEVEL_SENSITIVE,   // Level sensitive
							AT91F_ST_ASM_HANDLER );						
	//* Enable ST interrupt
	AT91F_AIC_EnableIt(AT91C_BASE_AIC, AT91C_ID_SYS);

	//* Initialize AT91RM9200 EMAC
	status = AT91F_EmacEntry();
	if (status)
	{
		sprintf(MsgBuffer, "Error EMAC init: 0x%x", status);
		AT91F_DBGU_Printk(MsgBuffer);
		while(1);
	}


	while(1)
		if (AT91F_ProcessEmacPacket(&IpHeader) == AT91C_IPPACKET)
			AT91F_DisplayIpPacket(&IpHeader);
}