Hardware related commands, 1 at+cclk real time clock, Ac75 at command set – Siemens AC75 User Manual
Page 481
AC75 AT Command Set
19. Hardware Related Commands
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AC75_ATC_V01.002
Page 481 of 569
10/30/06
Confidential / Released
19.
Hardware Related Commands
The AT commands described in this chapter are related to the AC75's hardware interface. Further information
regarding this interface is available in the "AC75 Hardware Interface Description"
19.1
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
•
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 AC75 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
(for example 2s after
^SYSSTART has been output).
Test Command
AT+CCLK=?
Response(s)
OK
Read Command
AT+CCLK?
Response(s)
OK
Write Command
AT+CCLK=
Response(s)
+CME ERROR: <err>
ERROR
OK
Reference(s)
PIN
ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
GSM 07.07
-
+
+
+
+
+
+
+
+
-
<time>
(str)