Colourful Battery Status script for Pine64 SOC board

pine64-battery.sh

#!/bin/bash

SWITCH="\033["
NORMAL="${SWITCH}0m"
RED="${SWITCH}1;31m"
GREEN="${SWITCH}1;32m"
YELLOW="${SWITCH}1;33m"
PURPLE="${SWITCH}1;35m"
BLUE="${SWITCH}1;34m"
CYAN="${SWITCH}1;36m"

# The path to the battery seems to have changed at some point.  In the 4.19.x
# kernel the path is now "axp20x-battery".  This makes the path configurable.

#BATT_PATH="/sys/class/power_supply/battery/present"
BATT_PATH="/sys/class/power_supply/axp20x-battery"
BATT_PRESENT=$(<${BATT_PATH}/present)

if [ "$BATT_PRESENT" = "1" ]; then
        BATT_STATUS=$(<${BATT_PATH}/status)
        BATT_VOLTAGE=$(<${BATT_PATH}/voltage_now)
        BATT_VOLTAGE=$(echo " (($BATT_VOLTAGE/10000)*0.01 ) "|bc)
        BATT_CURRENT=$(<${BATT_PATH}/current_now)
        ((BATT_CURRENT = BATT_CURRENT / 1000))
        BATT_CAPACITY=$(<${BATT_PATH}/capacity)
        BATT_HEALTH=$(<${BATT_PATH}/health)

        echo -e "${PURPLE}Pine64${NORMAL} reports ${GREEN}battery detected!${NORMAL}"
        echo -e "${YELLOW}Status:${NORMAL}" $BATT_STATUS
        echo -e "${YELLOW}Voltage:${NORMAL}" $BATT_VOLTAGE"v"
        echo -e "${YELLOW}Current:${NORMAL}" $BATT_CURRENT"ma"
        echo -e "${YELLOW}Capacity:${NORMAL}" $BATT_CAPACITY"%"
        echo -e "${YELLOW}Health:${NORMAL}" $BATT_HEALTH
else
        echo -e "${PURPLE}Pine64${NORMAL} reports ${RED}no battery connected!${NORMAL}"
fi