tty1.c

利用tty 传送pelco-d/p PTZ 的指令来测试旋转球

#include <stdio.h> /*标准输入输出定义*/
#include <stdlib.h> /*标准函数库定义*/
#include <unistd.h> /*Unix 标准函数定义*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h> /*文件控制定义*/
#include <termios.h> /*PPSIX 终端控制定义*/
#include <errno.h> /*错误号定义*/

//up    /**#  ./tty1 w
//down  /**#  ./tty1 s
//left  /**#  ./tty1 a
//right /**#  ./tty1 d
//stop  /**#  ./tty1 q

int main(int argc,char *argv[])

{
unsigned char cmd485[5][7]={{0xFF,0x01,0x00,0x10,0x2F,0x2F,0x6F},
                            {0xFF,0x01,0x00,0x08,0x2F,0x2F,0x67},
                            {0xFF,0x01,0x00,0x04,0x2F,0x2F,0x63},
                            {0xFF,0x01,0x00,0x02,0x2F,0x2F,0x61},
			    {0xFF,0x01,0x00,0x00,0x00,0x00,0x01}};
                            //up,down,left,right,stop
int fd;		
	
	fd=open("/dev/ttyS2",O_RDWR);
	if(fd<0) exit(1);
	switch(*argv[1])
		{
			case 'w':	//up
				write(fd,cmd485[0],8);
				break;
			case 's':	//down
				write(fd,cmd485[1],8);
				break;
			case 'a':  //left
				write(fd,cmd485[2],8);
				break;
			case 'd':  //right
				write(fd,cmd485[3],8);
				break;
			case 'q':
				write(fd,cmd485[4],8);
				break;
			default:
				 ;		
		}	
			
	return 0;
}