console.c

来自「it is a sample code for s3c2410 board.」· C语言 代码 · 共 39 行

#include "console.h"
#include "4510addr.h"
#include <stdarg.h>
#include "isr.h"


/*******************************************
 *uart initial setting
 *******************************************/
int console_init(void)
{
	//Line control register : Normal,No parity,1 stop,8 bits
	outl(0x03, ULCON0);
	//control register, transmit GDMA0 and receive GDMA1 
	outl(0x13, UCON0); 
	//setting buadrate 19200
	outl(0x500, UBRDIV0);
	//Wait until tx shifter is empty.
    while (!(inl(USTAT0) & 0x80)); 
	return 0;
	
	return 0;
}

int Console_Read(char *buff, int len)
{
    GDMA1_RX(buff, len);
	EnableGDMA1();
	return len;
}

int Console_Write(char *buff, int len)
{
    GDMA0_TX(buff, len);
	EnableGDMA0();
	return len;
}