BGS2T AT Command Set
17.2 AT+CALA
BGS2T_ATC_V01.301 Page 506 of 554 1/31/12
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17.2 AT+CALA Alarm Configuration
AT+CALA allows to set an alarm time for the BGS2T. When the alarm time is reached and the alarm is executed
the ME returns an Unsolicited Result Code (URC) and the alarm time is reset to "00/01/01,00:00:00".
The alarm can adopt two functions, depending on whether or not you switch the GSM engine off after setting the
alarm:
• Reminder message: You can use the alarm function to generate reminder messages. For this purpose, set
the alarm as described below and do not switch off or power down the ME. When executed the message
comes as "+CALA" URC which optionally may include a user defined <text>.
• Alarm mode: You can use the alarm function to restart the ME when powered down. For this purpose, set the
alarm as described below. Then power down the ME via AT^SMSO. When the alarm time is reached the ME
will wake up to Alarm mode, notified by the "^SYSSTART ALARM MODE" URC and, if configured, by an addi-
tional "+CALA" URC with a user defined <text>.
During Alarm mode the ME is deregistered from the GSM network and only a limited number of AT commands
is available, for details refer to Section 19.4, Availability of AT Commands Depending on Oper-
ating Mode of ME.
To return the ME to full operation (normal operating mode) it is necessary to restart the ME by driving the
ignition line (IGT pin of application interface) to ground or by using AT+CFUN=x,1. Transition to Normal mode
is indicated by the "^SYSSTART" URC if AT+IPR is set to a fixed bit rate.
For details please refer to [2].
AT+CALA test command returns the supported array index values <n>, the supported alarm types <type> and
the maximum length of the text <tlength>.
AT+CALA read command returns the current alarm settings.
Syntax
Test Command
AT+CALA=?
Response(s)
+CALA: (list of supported<n>s), (list of supported<type>s), (list of supported<tlength>s)
OK
ERROR
+CME ERROR: <err>
Read Command
AT+CALA?
Response(s)
+CALA: <time>, <n>, <type>, <text>
+CALA: ...
OK
ERROR
+CME ERROR: <err>
Write Command
AT+CALA=<time>, <n>[, <type>[, <text>]]
Response(s)
OK
ERROR
+CME ERROR: <err>
PIN ASC0 MUX1 MUX2 MUX3 Last Reference(s)
- + + + + + - 3GPP TS 27.007 [35]