MC52i AT Command Set

MC52i AT Command Set
18.2 AT+CALA
18.2 AT+CALA Set alarm time
The AT+CALA write command can be used to set an alarm time in the ME 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 ME 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 an Unsolicited Result Code which reads "+CALA".
• Alarm mode (only applicable to MC52i Module, not permitted for MC52i Terminal): 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 by entering the AT^SMSO command. When the alarm time is reached, the ME will wake
up to Alarm mode. To prevent the ME from unintentionally logging into the GSM network, Alarm mode provides
restricted operation. Upon wake-up, the ME indicates an Unsolicited Result Code which reads:
"+CALA". A limited number of AT commands is available during Alarm mode, for details see Section 20.4,
Availability of AT Commands Depending on Operating Mode of ME. The ME remains deregistered
from the GSM network.
If you want the ME to return 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.
If your ME is battery powered note that the battery can be charged while the ME stays in Alarm mode. For
details please refer to [2].
The AT+CALA test command returns the supported array index values , the supported alarm types
and the maximum length of the text to be output.
The AT+CALA read command returns the current alarm settings in the ME.
Syntax
Test Command
AT+CALA=?
Response(s)
+CALA: (list of supporteds), (list of supporteds), (list of supporteds)
OK
ERROR
+CME ERROR:
Read Command
AT+CALA?
Response(s)
+CALA: [, [, [, ]]]
OK
ERROR
+CME ERROR:
Write Command
AT+CALA=[, [, [, ]]]
Response(s)
OK
ERROR
+CME ERROR:
PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge Last Reference(s)
- + + + + + + + - GSM 07.07
MC52i_ATC_V01.201 Page 500 of 551 4/16/10
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