Intermec ck1 Reference Guide

• default_apm_mbatgood, default_apm_mbatlow, 

• default_apm_mbatverylow, default_apm_mbatcritical 

All the devApmSet*() and devApmGet*() functions get or change the value 
from or to the relative file in /etc/config/, and the changed value remains 
after you reboot the CK1. 

The following is an example for changing the APM settings by Command 
Line Operation: 

# echo “15” > /etc/config/default_apm_backlighttime 

The backlight time turn off time is changed to 15 seconds, and then you 
use the command below to let APM work from new setting: 

# sh /etc/config/es_set_config.sh 

All the commands shown in this section let APM work immediately, but 
the value is not saved to the relative files in the /etc/config/ directory. If 
you want the value to remain, you also need to change the relative files in 
the /etc/config/ directory. 

Idle mode 

# echo slow > /proc/apm 

Resume from Idle mode 

# echo busy > /proc/apm 

Suspend mode 

# echo stop > /proc/apm 

Disable automatic APM work 

# echo manual > /proc/apm 

Enable automatic APM work 

# echo auto > /proc/apm 

Turn on the backlight 

# echo "el on" > /proc/apm 

Turn off the backlight 

# echo "el off" > /proc/apm 

Set the idle time to 10 seconds 

# echo "lt 10" > /proc/apm 

Set the suspend time to 10 seconds 

# echo "st 10" > /proc/apm 

Set the backlight off time to 10 seconds 

# echo "el 10" > /proc/apm 

Set the main battery good level to 90% 

# echo "mbg 90" > /proc/apm 

Set the main battery low level to 30% 

# echo "mbl 30" > /proc/apm 

Set the main battery very low level to 15% 

# echo "mbv 15" > /proc/apm 

Set the main battery critical level to 5% 

# echo "mbc 5" > /proc/apm 

Set the backup battery good level to 90% 

# echo "bbg 90" > /proc/apm 

Set the backup battery low level to 30% 

# echo "bbl 30" > /proc/apm 

Set the backup battery very low level to 15% 

# echo "bbv 15" > /proc/apm 

Set the backup battery critical level to 5% 

# echo "bbc 5" > /proc/apm 

Turn on the EXT5V 

# echo “e5 on” > /proc/apm 

Turn off the EXT5V 

# echo “e5 off” > /proc/apm 

Set the voltage to 3.8V for the BIOS to 
resume from Stop mode 

# echo “cv 380” > /proc/apm