blink8.c 1.6 KB

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  1. /*
  2. * blink8.c:
  3. * Simple sequence over the first 8 GPIO pins - LEDs
  4. * Aimed at the Gertboard, but it's fairly generic.
  5. *
  6. * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
  7. ***********************************************************************
  8. * This file is part of wiringPi:
  9. * https://projects.drogon.net/raspberry-pi/wiringpi/
  10. *
  11. * wiringPi is free software: you can redistribute it and/or modify
  12. * it under the terms of the GNU Lesser General Public License as published by
  13. * the Free Software Foundation, either version 3 of the License, or
  14. * (at your option) any later version.
  15. *
  16. * wiringPi is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU Lesser General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU Lesser General Public License
  22. * along with wiringPi. If not, see <http://www.gnu.org/licenses/>.
  23. ***********************************************************************
  24. */
  25. #include <stdio.h>
  26. #include <wiringPi.h>
  27. int main (void)
  28. {
  29. int i, led ;
  30. printf ("Raspberry Pi - 8-LED Sequencer\n") ;
  31. printf ("==============================\n") ;
  32. printf ("\n") ;
  33. printf ("Connect LEDs to the first 8 GPIO pins and watch ...\n") ;
  34. wiringPiSetup () ;
  35. for (i = 0 ; i < 8 ; ++i)
  36. pinMode (i, OUTPUT) ;
  37. for (;;)
  38. {
  39. for (led = 0 ; led < 8 ; ++led)
  40. {
  41. digitalWrite (led, 1) ;
  42. delay (100) ;
  43. }
  44. for (led = 0 ; led < 8 ; ++led)
  45. {
  46. digitalWrite (led, 0) ;
  47. delay (100) ;
  48. }
  49. }
  50. }