/* Return non-zero if the timer is on */
/* FIXME: this may not be atomic WRT ISR */
#define tmr_on(t) (bit_get(_tmr_on, (t)))
/* Return non-zero if the timer is on */
/* FIXME: this may not be atomic WRT ISR */
#define tmr_on(t) (bit_get(_tmr_on, (t)))