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qmk-firmware/tmk_core/common/timer.h

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Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
2015-04-09 18:32:04 +02:00
/*
Copyright 2011 Jun Wako <wakojun@gmail.com>
Avoid 8-bit timer overflows in debounce algorithms (#12240) * Add fast_timer_t that is 16-bit or 32-bit based on architecture A 16-bit timer will overflow sooner but be faster to compare on AVR. * Avoid 8-bit timer overflows in debounce algorithms Count down remaining elapsed time instead of trying to do 8-bit timer comparisons. Add a "none" implementation that is automatically used if DEBOUNCE is 0 otherwise it will break the _pk/_pr count down. * Avoid unnecessary polling of the entire matrix in sym_eager_pk The matrix only needs to be updated when a debounce timer expires. * Avoid unnecessary polling of the entire matrix in sym_eager_pr The matrix only needs to be updated when a debounce timer expires. The use of the "needed_update" variable is trying to do what "matrix_need_update" was added to fix but didn't work because it only applied when all keys finished debouncing. * Fix sym_defer_g timing inconsistency compared to other debounce algorithms DEBOUNCE=5 should process the key after 5ms, not 6ms * Add debounce tests
2021-06-09 09:23:21 +02:00
Copyright 2021 Simon Arlott
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
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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
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
Change include guards in tmk_core/ and drivers/ to pragma once (#11240)
2020-12-26 05:56:11 +01:00
#pragma once
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
2015-04-09 18:32:04 +02:00
Avoid 8-bit timer overflows in debounce algorithms (#12240) * Add fast_timer_t that is 16-bit or 32-bit based on architecture A 16-bit timer will overflow sooner but be faster to compare on AVR. * Avoid 8-bit timer overflows in debounce algorithms Count down remaining elapsed time instead of trying to do 8-bit timer comparisons. Add a "none" implementation that is automatically used if DEBOUNCE is 0 otherwise it will break the _pk/_pr count down. * Avoid unnecessary polling of the entire matrix in sym_eager_pk The matrix only needs to be updated when a debounce timer expires. * Avoid unnecessary polling of the entire matrix in sym_eager_pr The matrix only needs to be updated when a debounce timer expires. The use of the "needed_update" variable is trying to do what "matrix_need_update" was added to fix but didn't work because it only applied when all keys finished debouncing. * Fix sym_defer_g timing inconsistency compared to other debounce algorithms DEBOUNCE=5 should process the key after 5ms, not 6ms * Add debounce tests
2021-06-09 09:23:21 +02:00
#if __has_include_next("_timer.h")
# include_next "_timer.h" /* Include the platform's _timer.h */
#endif
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
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#include <stdint.h>
format code according to conventions [skip ci]
2020-04-11 02:48:16 +02:00
#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)))))
clang-format changes
2019-08-30 20:19:03 +02:00
#define TIMER_DIFF_8(a, b) TIMER_DIFF(a, b, UINT8_MAX)
#define TIMER_DIFF_16(a, b) TIMER_DIFF(a, b, UINT16_MAX)
#define TIMER_DIFF_32(a, b) TIMER_DIFF(a, b, UINT32_MAX)
#define TIMER_DIFF_RAW(a, b) TIMER_DIFF_8(a, b)
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
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#ifdef __cplusplus
extern "C" {
#endif
extern volatile uint32_t timer_count;
clang-format changes
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void timer_init(void);
void timer_clear(void);
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
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uint16_t timer_read(void);
uint32_t timer_read32(void);
uint16_t timer_elapsed(uint16_t last);
uint32_t timer_elapsed32(uint32_t last);
Added OLED Display autoscroll during periods of OLED data inactivity (#6546) * Added OLED Display autoscroll during periods of OLED data inactivity. * Fixing compile errors * Feedback from review
2019-08-25 21:37:55 +02:00
// Utility functions to check if a future time has expired & autmatically handle time wrapping if checked / reset frequently (half of max value)
Fix int wrapping for timer_expired macros and use MAX defines for consistency and clarity (#10996)
2020-11-30 11:18:19 +01:00
#define timer_expired(current, future) ((uint16_t)(current - future) < UINT16_MAX / 2)
#define timer_expired32(current, future) ((uint32_t)(current - future) < UINT32_MAX / 2)
Added OLED Display autoscroll during periods of OLED data inactivity (#6546) * Added OLED Display autoscroll during periods of OLED data inactivity. * Fixing compile errors * Feedback from review
2019-08-25 21:37:55 +02:00
Avoid 8-bit timer overflows in debounce algorithms (#12240) * Add fast_timer_t that is 16-bit or 32-bit based on architecture A 16-bit timer will overflow sooner but be faster to compare on AVR. * Avoid 8-bit timer overflows in debounce algorithms Count down remaining elapsed time instead of trying to do 8-bit timer comparisons. Add a "none" implementation that is automatically used if DEBOUNCE is 0 otherwise it will break the _pk/_pr count down. * Avoid unnecessary polling of the entire matrix in sym_eager_pk The matrix only needs to be updated when a debounce timer expires. * Avoid unnecessary polling of the entire matrix in sym_eager_pr The matrix only needs to be updated when a debounce timer expires. The use of the "needed_update" variable is trying to do what "matrix_need_update" was added to fix but didn't work because it only applied when all keys finished debouncing. * Fix sym_defer_g timing inconsistency compared to other debounce algorithms DEBOUNCE=5 should process the key after 5ms, not 6ms * Add debounce tests
2021-06-09 09:23:21 +02:00
// 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
Squashed 'tmk_core/' content from commit 05caacc git-subtree-dir: tmk_core git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
2015-04-09 18:32:04 +02:00
#ifdef __cplusplus
}
#endif
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