MC55 AT Command Set
17.3 AT^SBC s
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MC55_ATC_V01.05 Page 430 of 469 2/10/04
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17.3 AT^SBC Battery charging / discharging and charge control
Responses returned by the AT^SBC command vary with the operating mode of the ME :
• Normal mode: ME is switched on by Ignition pin and running the SLEEP, IDLE , TALK or DATA mode. Charger
is not connected. AT^SBC can be used to query the battery capacity and the power consumption of ME and
application (if value of application was specified before as <current>).
• Normal mode + charging: Allows charging while ME is swi tched on by Ignition pin and running the SLEEP,
IDLE, TALK or DATA mode. AT^SBC returns only charger status and power consumption of ME / application.
Percentage of battery capacity is not available.
• Charge-only mode: Allows charging while ME is detached from GSM netw ork. When started, the mode is indi-
cated by the URC "^SYSSTART CHARGE-ONLY MODE". AT^SBC returns only charger status and power
consumption of ME / application. Percentage of battery capacity is not av ailable. In Charge-only mode a lim-
ited number of AT commands is accessible (see 17.3.1). There are several ways to activate the Charge-only
mode:
- from Power Down mode: Connect charger while ME was powered do wn with AT^SMSO
- from Normal mode: Connect charger, then enter AT^SMSO.
• Alarm mode: The battery can be charged while the ME stays in Alarm mode, but AT^SBC returns only ch arger
status and power consumption of ME / application. Percentage of battery capac ity is not available.
For details about charging please refer to [2].
Syntax
Test Command
AT^SBC=?
Response(s)
^SBC:(list of supported <bcs>s), (list of supported <bcl>s), (list of supported <mpc>s)
OK
Read Command
AT^SBC?
Response(s)
^SBC: <bcs>, <bcl>, <mpc>
OK
ERROR
+CME ERROR: <err>
Write Command
AT^SBC=<current>
Response(s)
OK
ERROR
+CME ERROR: <err>