CipherLab 8 Series User Manual

110
CipherLab BASIC Programming Part I
4.14 BATTERY COMMANDS
This section describes the commands related to power management that can be used to
monitor the voltage level of the main and backup batteries. The mobile computer is
equipped with a main battery for normal operation as well as a backup battery for
keeping SRAM data and time accuracy.
BACKUP_BATTERY
Purpose To get the voltage level of the backup battery.
Syntax A% = BACKUP_BATTERY
Remarks “A%”
is an integer variable to be assigned to the result. That is, the voltage
level of the backup battery is returned in units of milli-volt (mV).
The backup battery is used to retain data in SRAM and keep the real-
time clock
and calendar running, even when the power is off. The backup battery would
be considered as “Battery Low” when the BACK_BATTERY is
lower than 2900
mV.
That means the SRAM and the calendar chip may lose their data at any
time thereafter, if the battery is not recharged or replaced.
Example
CheckBackupBattery:
IF BACKUP_BATTERY < BATTERY_LOW% THEN
BEEP(2000, 30)
CLS
PRINT “Backup Battery needs to be replaced!”
Loop:
GOTO Loop
END IF
MAIN_BATTERY
Purpose To get the voltage level of the main battery.
Syntax A% = MAIN_BATTERY
Remarks “A%” is an integer variable to be assigned to the
result. That is, the voltage
level of the main battery is returned in units of milli-volt (mV).
The main battery is the power source for the system operation. The main
battery would be considered as “Battery Low”
when the MAIN_BATTERY is
lower than 3400 m
V (or 2200 mV for alkaline battery on 8001). That means
the basic operations may still be running, but some functions that consume
high power may be disabled.
Example
BATTERY_LOW% = 3400
CheckMainBattery:
IF MAIN_BATTERY < BATTERY_LOW% THEN
BEEP(2000, 30)
CLS
PRINT “Main Battery needs to be recharged!”
Loop:
GOTO Loop
END IF

CipherLab 8 Series Specifications

General

Brand	CipherLab
Model	8 Series
Category	PDA
Language	English