diff options
Diffstat (limited to 'tmk_core/common/timer.h')
| -rw-r--r-- | tmk_core/common/timer.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tmk_core/common/timer.h b/tmk_core/common/timer.h index abddcea857..02e39e79e7 100644 --- a/tmk_core/common/timer.h +++ b/tmk_core/common/timer.h @@ -1,5 +1,6 @@ /* Copyright 2011 Jun Wako <wakojun@gmail.com> +Copyright 2021 Simon Arlott This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,6 +18,10 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #pragma once +#if __has_include_next("_timer.h") +# include_next "_timer.h" /* Include the platform's _timer.h */ +#endif + #include <stdint.h> #define TIMER_DIFF(a, b, max) ((max == UINT8_MAX) ? ((uint8_t)((a) - (b))) : ((max == UINT16_MAX) ? ((uint16_t)((a) - (b))) : ((max == UINT32_MAX) ? ((uint32_t)((a) - (b))) : ((a) >= (b) ? (a) - (b) : (max) + 1 - (b) + (a))))) @@ -42,6 +47,21 @@ uint32_t timer_elapsed32(uint32_t last); #define timer_expired(current, future) ((uint16_t)(current - future) < UINT16_MAX / 2) #define timer_expired32(current, future) ((uint32_t)(current - future) < UINT32_MAX / 2) +// Use an appropriate timer integer size based on architecture (16-bit will overflow sooner) +#if FAST_TIMER_T_SIZE < 32 +# define TIMER_DIFF_FAST(a, b) TIMER_DIFF_16(a, b) +# define timer_expired_fast(current, future) timer_expired(current, future) +typedef uint16_t fast_timer_t; +fast_timer_t inline timer_read_fast(void) { return timer_read(); } +fast_timer_t inline timer_elapsed_fast(fast_timer_t last) { return timer_elapsed(last); } +#else +# define TIMER_DIFF_FAST(a, b) TIMER_DIFF_32(a, b) +# define timer_expired_fast(current, future) timer_expired32(current, future) +typedef uint32_t fast_timer_t; +fast_timer_t inline timer_read_fast(void) { return timer_read32(); } +fast_timer_t inline timer_elapsed_fast(fast_timer_t last) { return timer_elapsed32(last); } +#endif + #ifdef __cplusplus } #endif |