speech.h

来自「it is about embeded system」· C头文件 代码 · 共 65 行

#include <termios.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include<string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <error.h>



// 第一组命令
#define CALL               1	                //打电话
#define MESSAGE           2			//短信				
#define EXPLORER          3			//盲人浏览器
#define ROAD_DOG         4			//探路狗
#define OTHER             5			//其他

//第二组命令


#define BAUDRATE B9600

#define COM1 "/dev/tts/1"


extern char speech(char num)
{
    	struct termios oldtio,newtio,oldstdtio,newstdtio;    //define some variable    
	int i,j,fd;
	char get_data;
	            
	
		
	fd=open(COM1,O_RDWR | O_NOCTTY);	//open ttyS1
	if(fd==-1)
		perror("can not open the ttyS1\n");
	else 
                printf("good ,it is open!\n ");
	
	tcgetattr(0,&oldstdtio);		//save the old tty set 
  	tcgetattr(fd,&oldtio); 
  	tcgetattr(fd,&newstdtio); 
		
	newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD; //set the new tty 
	newtio.c_iflag = IGNPAR; 		/*input flag*/
	newtio.c_oflag = 0;		/*output flag*/
	newtio.c_lflag = 0;
	newtio.c_cc[VMIN]=1;
	newtio.c_cc[VTIME]=0;
 	tcflush(fd, TCIFLUSH);
	tcsetattr(fd,TCSANOW,&newtio);	/*set attrib	  */
		
	printf("write: 0x%x \n",num);	
	write(fd,&num,1);	 
	read(fd,&get_data,1);
//	printf("read: 0x%x\n",get_data);
	
	tcsetattr(fd,TCSANOW,&oldtio);   /* restore old modem setings */
  	tcsetattr(0,TCSANOW,&oldstdtio); /* restore old tty setings */
	close(fd);
	return get_data;
}