diff options
Diffstat (limited to 'platforms/avr/timer.c')
-rw-r--r-- | platforms/avr/timer.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/platforms/avr/timer.c b/platforms/avr/timer.c index 9fb671ae8d..26ba0e29fa 100644 --- a/platforms/avr/timer.c +++ b/platforms/avr/timer.c @@ -25,6 +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; +static uint32_t saved_ms; /** \brief timer initialization * @@ -78,6 +79,24 @@ inline void timer_clear(void) { } } +/** \brief timer save + * + * Set saved_ms to current time. + */ +void timer_save(void) { + saved_ms = timer_read32(); +} + +/** \brief timer restore + * + * Set timer_count to saved_ms + */ +void timer_restore(void) { + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + timer_count = saved_ms; + } +} + /** \brief timer read * * FIXME: needs doc |