main.c

一个网卡的应用

#include "at91rm9200.h"
#include "uart.h"
#include "emac.h"

static inline void pmc_init() {
	pmc_reg_p pmc = (pmc_reg_s *)PMC_BASE;
	pmc->ckgr_pllar = 0x20473f05;	//diva=5, mula=72, pllacount=63, the plla out = 10/5*72=144MHz
	while( !( pmc->pmc_sr&(1<<1) ) );
	pmc->pmc_mckr = 0x106;		//prescale=2, pck=144/2=72MHz. mdiv=2, mck=72/2=36MHz
	while( !( pmc->pmc_sr&(1<<3) ) );
}

static void delay1() {
	int i;
	for(i=0; i<10000; i+=2)
		i = i - 1;
}

void reset() {
	pmc_init();
	dbgu_init();
	
	put_s( "hello, emac testing software.\r\n\r\n" );

	emac_init();

	delay1();

	emac_test();
	while(1);
}