Rainbow-electronics GE863-GPS low power User Manual download pdf (Page 92)

GE863-GPS Software User Guide

1vv0300724 Rev. 3 - 05/07/07

At the OK result code, the device will end alarm activity and enter normal operating mode. If the

device was already in normal operating mode (alarm has started when the module was already ON),

then with the command only the alarm activity is terminated.

3.7.2.3 Querying the Alarm status

When the device awakes by means of an alarm time expire, the module starts the alarm activity but

not the network activity, permitting some operations to be done by the controlling application without

registering the mobile in the network.

To check if the mobile is in the "alarm status" and therefore no network activity is done or if the device

is in the normal operating status:

• Send command

AT#WAKE?<cr>

• wait for response in the format:

+WAKE: <status>

where:

<status> is the operating mode:

0 - normal operating mode

1 - alarm mode

NOTE: if the device is in the alarm mode no network activity is done, therefore the only

commands that are accepted are the #WAKE and #SHDN ones.

When in the alarm mode, no operation is allowed towards the network, therefore it is not

possible to receive or send calls, SMS and whatever GSM/GPRS services.

3.7.2.3.1 Alarm operation example

For example:

1- Let's assume you have a battery powered device, a meteorological unit that measures every hour

the conditions and therefore needs to send a new SMS every hour to the central server, for example

indicating the whether status just measured. Let say your application shall consume the absolute

minimum power to achieve the job, since it will be placed in a remote position where its battery shall

last as long as possible and therefore it should shutdown completely and wake up every hour for just

the time needed to measure & send the whether, successively shutdown.

- set up the time in the internal clock (only the first time..)

command:

AT+CCLK="02/11/07,12:24:30+01"<cr>

response:

- set up the next alarm in order to raise the GPIO6 pin to power up the controlling application too.

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Rainbow-electronics GE863-GPS low power User Manual Page 92