Siemens Brodersen MC55 AT - Manual (Page 426)

MC55_ATC_V04.00 Page 426 of 475 3/17/06
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18. Hardware related Commands
The AT Commands described in this chapter are related to the MC55's hardware interface. More information
regarding this interface is available with the "MC55 Hardware Interface Description" [2] .
18.1 AT+CCLK Real Time Clock
Syntax
Parameter Description
Format is "yy/mm/dd,hh:mm:ss", where the characters indicate the two last digits of the year, followed by month,
day, hour, minutes, seconds; for example 6th of July 2005, 22:10:00 hours equals to "05/07/06,22:10:00"
Factory default is "02/01/01,00:00:00"
Notes
• is retained if the device enters the Power Down mode via
AT^SMSO
.
• will be reset to its factory default if power is totally disconnected. In this case, the clock starts with
= "02/01/01,00:00:00" upon next power-up.
• Each time MC55 is restarted it takes 2s to re-initialize the RTC and to update the current time. Therefore, it
is recommended to wait 2s before using the commands
AT+CCLK
and
AT+CALA
(for example 2s after
^SYSSTART has been output).
Test Command
AT+CCLK=?
Response(s)
OK
Read Command
AT+CCLK?
Response(s)
+CCLK:
OK
Write Command
AT+CCLK=
Response(s)
+CME ERROR:
ERROR
OK
Reference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge Last
GSM 07.07 ! % % % % % % % !
(str)