init.c

来自「嵌入式系统的小作品」· C语言 代码 · 共 59 行

/****************Portting Start *******************/
#include "string.h"

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


int  consoleFd;

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

/* Test if there's chars at serial port */
int sio_ischar()
{
	int cnt;
	ioctl (consoleFd, FIONREAD, (int) &cnt);
	return cnt;
}

void Uart_SendKey(unsigned char trychar)
{
	unsigned char keyout;
	keyout = trychar;
	write(consoleFd, &keyout, 1);
}

int Uart_GetKey(unsigned char * chp)
{
	unsigned char ch;
	
	/* last_error = 0; */

	while ( !sio_ischar() )
	{
          taskDelay(4); 
          return -1;
    }

	read(consoleFd,&ch,1);

	/* last_error = 1; */
	
	*chp=ch;
	/* printf("Uart_GetKey: Get the char %c .\n",ch);*/
	return (int)ch;
}
/****************Portting End*******************/