diff options
Diffstat (limited to 'tmk_core/common/avr/timer.c')
| -rw-r--r-- | tmk_core/common/avr/timer.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/tmk_core/common/avr/timer.c b/tmk_core/common/avr/timer.c index 292b41c3a6..84af444885 100644 --- a/tmk_core/common/avr/timer.c +++ b/tmk_core/common/avr/timer.c @@ -17,6 +17,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #include <avr/io.h> #include <avr/interrupt.h> +#include <util/atomic.h> #include <stdint.h> #include "timer_avr.h" #include "timer.h" @@ -24,7 +25,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. // counter resolution 1ms // NOTE: union { uint32_t timer32; struct { uint16_t dummy; uint16_t timer16; }} -volatile uint32_t timer_count = 0; +volatile uint32_t timer_count; void timer_init(void) { @@ -52,10 +53,9 @@ void timer_init(void) inline void timer_clear(void) { - uint8_t sreg = SREG; - cli(); + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { timer_count = 0; - SREG = sreg; + } } inline @@ -63,10 +63,9 @@ uint16_t timer_read(void) { uint32_t t; - uint8_t sreg = SREG; - cli(); - t = timer_count; - SREG = sreg; + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + t = timer_count; + } return (t & 0xFFFF); } @@ -76,10 +75,9 @@ uint32_t timer_read32(void) { uint32_t t; - uint8_t sreg = SREG; - cli(); - t = timer_count; - SREG = sreg; + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + t = timer_count; + } return t; } @@ -89,10 +87,9 @@ uint16_t timer_elapsed(uint16_t last) { uint32_t t; - uint8_t sreg = SREG; - cli(); - t = timer_count; - SREG = sreg; + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + t = timer_count; + } return TIMER_DIFF_16((t & 0xFFFF), last); } @@ -102,10 +99,9 @@ uint32_t timer_elapsed32(uint32_t last) { uint32_t t; - uint8_t sreg = SREG; - cli(); - t = timer_count; - SREG = sreg; + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + t = timer_count; + } return TIMER_DIFF_32(t, last); } |