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  1. /* Copyright 2017 Fred Sundvik
  2. *
  3. * This program is free software: you can redistribute it and/or modify
  4. * it under the terms of the GNU General Public License as published by
  5. * the Free Software Foundation, either version 2 of the License, or
  6. * (at your option) any later version.
  7. *
  8. * This program is distributed in the hope that it will be useful,
  9. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. * GNU General Public License for more details.
  12. *
  13. * You should have received a copy of the GNU General Public License
  14. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  15. */
  16. #include "timer.h"
  17. static uint32_t current_time = 0;
  18. void timer_init(void) { current_time = 0; }
  19. void timer_clear(void) { current_time = 0; }
  20. uint16_t timer_read(void) { return current_time & 0xFFFF; }
  21. uint32_t timer_read32(void) { return current_time; }
  22. uint16_t timer_elapsed(uint16_t last) { return TIMER_DIFF_16(timer_read(), last); }
  23. uint32_t timer_elapsed32(uint32_t last) { return TIMER_DIFF_32(timer_read32(), last); }
  24. void set_time(uint32_t t) { current_time = t; }
  25. void advance_time(uint32_t ms) { current_time += ms; }
  26. void wait_ms(uint32_t ms) { advance_time(ms); }