Dmitry Shalnoff's Git Repository - ETG_Helmet/blob - SOFTWARE/OMEGA2/adc.sh

   1 #/bin/bash
   2
   3 if [ "$TMPFS" == "" ]; then
   4         . "common.sh"
   5 fi
   6
   7 echo $$ > $PID/$0
   8
   9 # settings
  10
  11 devHEXNum="48"
  12
  13 BATT_20MIN=$(( 0x3b ))  # about 35-40 min
  14 BATT_10MIN=$(( 0x3a ))
  15 BATT_5MIN=$(( 0x39 ))
  16 BATT_0MIN=$(( 0x38 ))
  17
  18 battCnt=0
  19 currentBat=255
  20 prevBatt=255
  21 battMessage=""
  22 prevBattMessage=""
  23
  24 # test ADC presence
  25
  26 if i2cdetect -y 1 | grep " $devHEXNum " > /dev/null; then
  27
  28         i2cset -y 1 0x48 0x01 0x42E0 w
  29         sleep 1;
  30
  31         while [ 1 ]; do
  32
  33                 battHEX=$(i2cget -y 1 0x$devHEXNum 0x00 w)
  34
  35                 batt=$(( 0x$(echo $battHEX | awk '{print substr($0,5)}') ))
  36
  37                 echo "battery: $battHEX, $batt" | myLog
  38
  39                 if [ "$batt" == "$prevBatt" ]; then battCnt=$(( $battCnt + 1 )); else battCnt=0; fi
  40
  41                 prevBatt=$batt
  42
  43                 echo "battCnt: $battCnt"
  44
  45                 if [ "$battCnt" == "3" ]; then
  46                         currentBat=$batt
  47                         battCnt=0
  48                 fi
  49
  50                 # ------ compare -----------
  51
  52                 if [ "$currentBat" -le "$BATT_20MIN" ] && [ "$currentBat" -gt "$BATT_10MIN" ] && [ "$battMessage" != "$BATTERY_20" ]; then
  53                         battMessage=$BATTERY_20
  54                 fi
  55
  56                 if [ "$currentBat" -le "$BATT_10MIN" ] && [ "$currentBat" -gt "$BATT_5MIN" ] && [ "$battMessage" != "$BATTERY_10" ]; then
  57                         battMessage=$BATTERY_10
  58                 fi
  59
  60                 if [ "$currentBat" -le "$BATT_5MIN" ] && [ "$currentBat" -gt "$BATT_0MIN" ] && [ "$battMessage" != "$BATTERY_5" ]; then
  61                         battMessage=$BATTERY_5
  62                 fi
  63
  64                 if [ "$currentBat" -le "$BATT_0MIN" ] && [ "$battMessage" != "$BATTERY_0" ]; then
  65                         battMessage=$BATTERY_0
  66                         shutdownDevice $BATTERY_SHUTDOWN_DELAY "$DEV_JINGLE" "$BATTERY_0"
  67                 fi
  68
  69                 # ------ send message ------
  70
  71                 if [ "$prevBattMessage" != "$battMessage" ]; then
  72                         echo "battMessage: $battMessage" | myLog
  73
  74                         echo "$DEV_JINGLE|$battMessage|$DEV_JINGLE_OUT" > $TMPFS/$message
  75
  76                         prevBattMessage=$battMessage
  77                 fi
  78
  79                 sleep 30;
  80         done
  81
  82 else
  83         echo "ADC module not detected" | myLog
  84 fi