diff options
Diffstat (limited to 'tmk_core/common/mbed/timer.c')
-rw-r--r-- | tmk_core/common/mbed/timer.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tmk_core/common/mbed/timer.c b/tmk_core/common/mbed/timer.c new file mode 100644 index 000000000..c357ceb78 --- /dev/null +++ b/tmk_core/common/mbed/timer.c @@ -0,0 +1,41 @@ +#include "cmsis.h" +#include "timer.h" + +/* Mill second tick count */ +volatile uint32_t timer_count = 0; + +/* Timer interrupt handler */ +void SysTick_Handler(void) { + timer_count++; +} + +void timer_init(void) +{ + timer_count = 0; + SysTick_Config(SystemCoreClock / 1000); /* 1ms tick */ +} + +void timer_clear(void) +{ + timer_count = 0; +} + +uint16_t timer_read(void) +{ + return (uint16_t)(timer_count & 0xFFFF); +} + +uint32_t timer_read32(void) +{ + return timer_count; +} + +uint16_t timer_elapsed(uint16_t last) +{ + return TIMER_DIFF_16(timer_read(), last); +} + +uint32_t timer_elapsed32(uint32_t last) +{ + return TIMER_DIFF_32(timer_read32(), last); +} |