@Groguard's pocketchip battery script mods

gistfile1.txt

#!/bin/sh
while true
do
    ###################
    #read fuel gauge B9h
    BAT_GAUGE_HEX=$(i2cget -y -f 0 0x34 0xb9)
    #read power op mode
    POWER_OP_MODE=$(i2cget -y -f 0 0x34 0x01)
    # get charging indicator
    CHARG_IND=$(($(($POWER_OP_MODE&0x40))/64))  # divide by 64 is like shifting rigth 6 times
    # output to file
    echo $CHARG_IND > /tmp/charging

    # bash math -- converts hex to decimal so `bc` won't complain later...
    # MSB is 8 bits, LSB is lower 4 bits
    BAT_GAUGE_DEC=$(($BAT_GAUGE_HEX))
    echo $BAT_GAUGE_DEC% > /tmp/battery
    while [ $BAT_GAUGE_DEC -le 20 ]; do
        i2cset -f -y 0 0x34 0x93 0x0 # Turn LED Off
        sleep 0.50
        i2cset -f -y 0 0x34 0x93 0x1 # Turn LED On
        sleep 0.50
    done
    sleep 60
done