uart.c

来自「Tornado的源代码资源包」· C语言 代码 · 共 47 行

#include "xmodem.h"
#include "vxworks.h"
#include "tylib.h"


int  consoleFd;

void sio_init( )
{
	consoleFd=open("/tyCo/0",O_RDWR,0666);
	ioctl(consoleFd,FIOSETOPTIONS,OPT_RAW);
	ioctl(consoleFd,FIOFLUSH,0);
}

void sio_putc(unsigned char c)
{
	unsigned char keyout;
	keyout = c;
	write(consoleFd, &keyout, 1);
}

void sio_puts(char *s)
{
  while(*s != 0) {
    sio_putc(*s); 
    s++;
  }
}

unsigned char sio_getc( )
{
	unsigned char keyout;

	while( !sio_ischar() );
	read(consoleFd,&keyout,1);
	
	return keyout;
}

/* 如果串口有数据，返回1 */
int sio_ischar()
{
	int cnt;
	ioctl (consoleFd, FIONREAD, (int) &cnt);
	return cnt;
}