inky_update/inky_update.sh at main · zedstarr/inky_update · GitHub

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#!/bin/bash

echo 0 > /home/pi/inky_update/status.txt

while true; do

  PREV_STATE=$(cat /home/pi/inky_update/status.txt)
  PSI_STAT_M="0"
  PSI_STAT_T="0"
  PSI_STAT_I="0"
  SERVICE="MCLINK.EXE"
  ps -ef | grep $SERVICE | grep -v grep > /dev/null
  if [ $? -eq 0 ]
  then
      PSI_STAT_M="1"
  else
      PSI_STAT_M="0"
  fi

  # test if user is logged in via tty/USB
  w | grep ttyUSB | grep -v grep > /dev/null
  if [ $? -eq 0 ]
  then
    PSI_STAT_T="1"
  else
    PSI_STAT_T="0"
  fi

  #  test if connected to internet
  test=$(/home/pi/inky_update/test_conn.sh)
  if [ "$test" = "we have connectivity" ]
  then
    PSI_STAT_I="1"
  else
    PSI_STAT_I="0"
  fi

  PSI_STATUS=$((2#$PSI_STAT_I$PSI_STAT_T$PSI_STAT_M))
  echo $PSI_STATUS > /home/pi/inky_update/status.txt

  if [ "$PSI_STATUS" != "$PREV_STATE" ]; then

    # display bitmap MCLS-x.png where x is the status bitmap number 0-7
    /usr/bin/python3 /home/pi/inky_update/inky_display.py $PSI_STATUS > /dev/null 2>&1
    echo "`date`: "$PREV_STATE" "$PSI_STATUS >> /home/pi/inky_update/states.txt
  fi

  sleep 37

done