Specifications

AT Command Set Reference
Ver. 1.00
GSM1308AT001 Page 314 Ver. 1.00 – 10/29/2008
4.10.1. $RTCALRM Real Time Clock Alarm
(continued)
Reference N/A
Standard Scope Optional
Enfora Implementation Scope Full
Notes This command is used to set the Alarm time
for the RTC. Currently all time is based on
24-Hour time format. The alarm may be
cleared using the command
AT$RTCCLRA. This call in conjunction
with the use of either the $EVENT engine
or the $RTCWAKE command the user has
a rich feature set of driving other events or
waking the system up at a pre-determined
time in the future. No checks are made for
alarm time not being later than current time.
AT$RTCALRM will not trigger if the alarm
time is occurring while the unit is resetting.
Examples
Following sets and alarm for 2003, October, 13
th
at 17:00 Hours
at$rtcalrm=3,10,13,17,0,0
OK
Following queries the alarm for current time, and shows that the alarm being;
Enabled, for 2003, October 13
th
at 17:00 hours.
at$rtcalrm?
$RTCALRM: 01, 03, 10, 13, 17, 00, 00
OK
Following call unsets alarm followed by displaying alarm time information.
at$rtcclra
OK
at$rtcalrm?
$RTCALRM: 00, 03, 10, 13, 17, 00, 00
OK