Once armed, the alarm fires when TIMER_ALARM1 == TIMELR.
The alarm will disarm itself once it fires, and can
be disarmed early using the ARMED status register.
Arm alarm 1, and configure the time it will fire.
Once armed, the alarm fires when TIMER_ALARM1 == TIMELR.
The alarm will disarm itself once it fires, and can
be disarmed early using the ARMED status register.
Register ALARM1
reader
Register ALARM1
writer