diff options
Diffstat (limited to 'core/time.c')
-rw-r--r-- | core/time.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/core/time.c b/core/time.c deleted file mode 100644 index 69e962c..0000000 --- a/core/time.c +++ /dev/null @@ -1,77 +0,0 @@ -/* ***************************************************************************** - * The MIT License - * - * Copyright (c) 2010 Perry Hung. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * ****************************************************************************/ - -/** - * @file time.c - * - * @brief - */ - -#include "libmaple.h" -#include "systick.h" -#include "time.h" - -#define CYCLES_PER_MICROSECOND 72 -#define FUDGE 42 - -extern volatile uint32 systick_timer_millis; - -uint32 millis() { - unsigned long m; - m = systick_timer_millis; - return m; -} - -void delay(unsigned long ms) -{ - unsigned long start = millis(); - - while (millis() - start <= ms) - ; -} - - - -#if 1 -void delayMicroseconds(uint32 us) { - uint32 target; - uint32 last, cur, count; - /* fudge factor hacky hack hack for function overhead */ - target = us * CYCLES_PER_MICROSECOND - FUDGE; - - /* Get current count */ - last = systick_get_count(); - cur = systick_get_count(); - count = last; - while ((count-cur) <= target) { - cur = systick_get_count(); - - /* check for overflow */ - if (cur > last) { - count += MAPLE_RELOAD_VAL; - } - last = cur; - } -} -#endif |