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Add timer_save and _restore functions. (#23887)

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Co-authored-by: Sergey Vlasov <sigprof@gmail.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>
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Dasky 2024-10-25 18:10:17 +01:00 • committed by GitHub
parent f486605bab
commit 5c85271e48
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19
platforms/avr/timer.c
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@ -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