linux 串口接收

Code:

1. #include<stdio.h>
2. #include<sys/types.h>
3. #include<fcntl.h>
4. #include<termios.h>
5. #defineBAUDRATEB115200
6. #defineMODEMDEVICE"/dev/ttyUSB1"
7. intmain()
8. {
9. intfd,c=0,res;
10. structtermiosoldtio,newtio;
11. charbuf[256];
12. printf("start.../n");
13. fd=open(MODEMDEVICE,O_RDWR|O_NOCTTY);
14. if(fd<0)
15. {
16. perror(MODEMDEVICE);
17. exit(1);
18. }
19. printf("open.../n");
20. tcgetattr(fd,&oldtio);
21. bzero(&newtio,sizeof(newtio));
22. newtio.c_cflag=BAUDRATE|CS8|CLOCAL|CREAD;
23. newtio.c_iflag=IGNPAR;
24. newtio.c_oflag=0;
25. newtio.c_lflag=ICANON;
26. tcflush(fd,TCIFLUSH);
27. tcsetattr(fd,TCSANOW,&newtio);
28. printf("reading.../n");
29. while(1)
30. {
31. res=read(fd,buf,255);
32. //buf[res]=='/0';
33. printf("res=%dvuf=%s/n",res,buf);
34. //if(buf[0]=='@')break;
35. }
36. printf("close.../n");
37. close(fd);
38. tcsetattr(fd,TCSANOW,&oldtio);
39. return0;
41. }