alt_busy_sleep.h 1.5 KB

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  1. #ifndef __ALT_BUSY_SLEEP_H
  2. #define __ALT_BUSY_SLEEP_H
  3. /*
  4. * Copyright (c) 2003 Altera Corporation, San Jose, California, USA.
  5. * All rights reserved.
  6. *
  7. * Permission is hereby granted, free of charge, to any person obtaining a copy
  8. * of this software and associated documentation files (the "Software"), to
  9. * deal in the Software without restriction, including without limitation the
  10. * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  11. * sell copies of the Software, and to permit persons to whom the Software is
  12. * furnished to do so, subject to the following conditions:
  13. *
  14. * The above copyright notice and this permission notice shall be included in
  15. * all copies or substantial portions of the Software.
  16. *
  17. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23. * DEALINGS IN THE SOFTWARE.
  24. */
  25. /*
  26. * The function alt_busy_sleep provides a busy loop implementation of usleep.
  27. * This is used to provide usleep for the standalone HAL, or when the timer is
  28. * unavailable in uC/OS-II.
  29. */
  30. extern unsigned int alt_busy_sleep (unsigned int us);
  31. #endif /* __ALT_BUSY_SLEEP_H */