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| author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
|---|---|---|
| committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
| commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
| tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /tmk_core/common/avr/_wait.h | |
| parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
| parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) | |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'tmk_core/common/avr/_wait.h')
| -rw-r--r-- | tmk_core/common/avr/_wait.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/tmk_core/common/avr/_wait.h b/tmk_core/common/avr/_wait.h index 56eb316faf..683db6ae57 100644 --- a/tmk_core/common/avr/_wait.h +++ b/tmk_core/common/avr/_wait.h @@ -17,8 +17,28 @@ #include <util/delay.h> -#define wait_ms(ms) _delay_ms(ms) -#define wait_us(us) _delay_us(us) +#define wait_ms(ms) \ + do { \ + if (__builtin_constant_p(ms)) { \ + _delay_ms(ms); \ + } else { \ + for (uint16_t i = ms; i > 0; i--) { \ + _delay_ms(1); \ + } \ + } \ + } while (0) +#define wait_us(us) \ + do { \ + if (__builtin_constant_p(us)) { \ + _delay_us(us); \ + } else { \ + for (uint16_t i = us; i > 0; i--) { \ + _delay_us(1); \ + } \ + } \ + } while (0) +#define wait_cpuclock(n) __builtin_avr_delay_cycles(n) +#define CPU_CLOCK F_CPU /* The AVR series GPIOs have a one clock read delay for changes in the digital input signal. * But here's more margin to make it two clocks. */ @@ -26,4 +46,4 @@ # define GPIO_INPUT_PIN_DELAY 2 #endif -#define waitInputPinDelay() __builtin_avr_delay_cycles(GPIO_INPUT_PIN_DELAY) +#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY) |