diff options
Diffstat (limited to 'common/timer.h')
| -rw-r--r-- | common/timer.h | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/common/timer.h b/common/timer.h index f9e8181e6f..6437473ff7 100644 --- a/common/timer.h +++ b/common/timer.h @@ -23,10 +23,12 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #ifndef TIMER_PRESCALER # if F_CPU > 16000000 # define TIMER_PRESCALER 256 -# elif F_CPU >= 4000000 +# elif F_CPU > 2000000 # define TIMER_PRESCALER 64 -# else +# elif F_CPU > 250000 # define TIMER_PRESCALER 8 +# else +# define TIMER_PRESCALER 1 # endif #endif #define TIMER_RAW_FREQ (F_CPU/TIMER_PRESCALER) @@ -38,16 +40,28 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. #endif #define TIMER_DIFF(a, b, max) ((a) >= (b) ? (a) - (b) : (max) - (b) + (a)) -#define TIMER_DIFF_RAW(a, b) TIMER_DIFF(a, b, UINT8_MAX) -#define TIMER_DIFF_MS(a, b) TIMER_DIFF(a, b, UINT16_MAX) +#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) + +#ifdef __cplusplus +extern "C" { +#endif -extern volatile uint16_t timer_count; +extern volatile uint32_t timer_count; void timer_init(void); void timer_clear(void); uint16_t timer_read(void); +uint32_t timer_read32(void); uint16_t timer_elapsed(uint16_t last); +uint32_t timer_elapsed32(uint32_t last); + +#ifdef __cplusplus +} +#endif #endif |