#!/bin/bash
# Manages the fast charging circuit.
# The script will check every minute how long the Pi has been running,
# and after 2 hours, it will turn off the GPIO pin to disable the
# high current charging circuit. High current charge circuit is C/40,
# and low current charge circuit is C/100.
timecheck=0
safetime=2 # num of hours to run on high charge
charge_pin=4 # GPIO pin used
# Function to turn on/off the GPIO pin
function setcharge_pin {
pin_state=$1 #This variable is passed down during the call to the function.
python3 ~/safe_shutdown/pin_output_control.py $charge_pin $pin_state # change this to match where you install the script
}
# I found the next command online, so I am not positive that it helps.
trap 'echo "Caught SIGUSR1"' SIGUSR1 # I think this looks for an interrupt and helps prevent the sleep command from causing a delay on shutdown.
setcharge_pin 1 # Turns the GPIO pin on. I could also turn it on in rc.local, but decided just to do it here.
while true
do
timecheck=$( uptime -p | grep -oP "\d+ hour" ) #Gets runtime hours
timecheck=$( echo ${timecheck:0:1}) #Converts that to an Integer
if [[ $timecheck -ge $safetime ]]
then
# echo "$safetime hour(s) has elapsed, charging circuit going low"
break # exits infinite loop
fi
sleep 60 & # Wait 1 minute before checking the time again
wait $! # wait for an interrupt, used in conjunction with the trap above
done
# Exit the program
setcharge_pin 0 # Turns the GPIO pin off, disables fast charging

import sys
import RPi.GPIO as GPIO
GPIO.setwarnings(False)

#var1 = sys.argv[1]
charge_pin = int(sys.argv[1]) #GPIO pin is passed from calling program or command line
pin_on_off = int(sys.argv[2]) #State of pin is passed from calling program, 1 is on, anything else is off

GPIO.setmode(GPIO.BCM)
GPIO.setup(charge_pin, GPIO.OUT)

if pin_on_off == 1:
GPIO.output(charge_pin, True)
else:
GPIO.output(charge_pin, False)

@reboot /home/pi/safe_shutdown/batcharg.sh >/dev/null 2>&1

#!/bin/bash
# Manages the fast charging circuit.
# The script will check every minute how long the Pi has been running,
# and after 2 hours, it will turn off the GPIO pin to disable the
# high current charging circuit. High current charge circuit is C/40,
# and low current charge circuit is C/100.

time_check=0
safe_time=2 # num of hours to run on high charge
charge_pin=4 # GPIO pin used

# Function to turn on/off the GPIO pin
function setcharge_pin {
pin_state=$1
python3 ~/safe_shutdown/pin_output_control.py $charge_pin $pin_state # change this to match where you install the script
}

# I found the next command online, so I am not positive that it helps.
trap 'echo "Caught SIGUSR1"' SIGUSR1 # I think this looks for an interrupt and helps prevent the sleep command from causing a delay on shutdown.

setcharge_pin 1 # Turns the GPIO pin on. Could also turn it on in rc.local.

while true
do
timecheck=$( uptime -p | grep -oP "\d+ hour" ) #Gets runtime hours
timecheck=$( echo ${timecheck:0:1}) #Converts that to an Integer

if [[ $timecheck -ge $safetime ]]
then
# echo "$safetime hour(s) has elapsed, charging circuit going low"
break # exits infinite loop
fi

sleep 60 & # Wait 1 minute before checking the time again
wait $! # wait for an interrupt, used in conjunction with the trap above
done

# Exit the program
setcharge_pin 0 # Turns the GPIO pin off, disables fast charging

# Pin 14 sends a Hi signal until the RPi is shutdown to hold the battery relay closed
echo 14 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio14/direction
echo 1 > /sys/class/gpio/gpio14/value
# Pin 15 receives a Hi signal when the main power supply has been disconnected
# Once Pin 15 goes Hi, the script sends a command to shutdown the computer
echo 15 > /sys/class/gpio/export
echo in > /sys/class/gpio/gpio15/direction

If bouncecount > 1:
print "ssdManager::runSDManager: Shutting down now"

If bouncecount > 1:
print ("ssdManager::runSDManager: Shutting down now")