serialRead.c 1.4 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
  1. /*
  2. * serial.c:
  3. * Example program to read bytes from the Serial line
  4. *
  5. * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
  6. ***********************************************************************
  7. * This file is part of wiringPi:
  8. * https://projects.drogon.net/raspberry-pi/wiringpi/
  9. *
  10. * wiringPi is free software: you can redistribute it and/or modify
  11. * it under the terms of the GNU Lesser General Public License as published by
  12. * the Free Software Foundation, either version 3 of the License, or
  13. * (at your option) any later version.
  14. *
  15. * wiringPi is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU Lesser General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU Lesser General Public License
  21. * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
  22. ***********************************************************************
  23. */
  24. #include <stdio.h>
  25. #include <string.h>
  26. #include <errno.h>
  27. #include <wiringSerial.h>
  28. int main ()
  29. {
  30. int fd ;
  31. if ((fd = serialOpen ("/dev/ttyAMA0", 115200)) < 0)
  32. {
  33. fprintf (stderr, "Unable to open serial device: %s\n", strerror (errno)) ;
  34. return 1 ;
  35. }
  36. // Loop, getting and printing characters
  37. for (;;)
  38. {
  39. putchar (serialGetchar (fd)) ;
  40. fflush (stdout) ;
  41. }
  42. }