showsensors

#!/bin/bash -u           
# Script_name     : showsensors
# Author          : Bert Lindeman
# Description     : Show info of recognized sensors
# Version         : v1.3
# Date            : 2014-12-29
# Usage           : showsensors
# Notes           : 
# Copyright       : 2014 Bert Lindeman
# License         : GPL-3.0+
#
#============================================================================
#
# Changelog        
# Date     By       Description
# 20141104 BL       prepare for release v1.3
# 20140924 BL       allow a parameter to only show ONE sensor
#                   Easy to use watch and see only that sensor
# 20141229 BL       o Adapt to updates in
#                     kernel version 3.16.1-8-ev3dev
# 20150109 BL       update for 3.16.7
#                   o device_name -> driver_name
# 20160103 BL       adapt to image 20151230 (change filenames)
#
#============================================================================
#
selectport=${1:-}
#      parm1=${1:-noparm}
#
# determine which interface services what input port:
#
# IFS=$' \n' read -a sensors <<< "`echo /sys/class/msensor/sensor*/`"
  IFS=$' \n' read -a sensors <<< "`echo /sys/class/lego-sensor/sensor*/`"
#
hits=0
#
for  i in "${!sensors[@]}" # ! walk the indexes
do
  # echo -e "Process $i \"${sensors[$i]}\""
  if [ -e "${sensors[$i]}" ]; then
      cd "${sensors[$i]}"
      if [ "$#" == 0 ] || [ "$selectport" == "`cat address`" ]; then
      
      
#cat address
#cat units
#cat address 
#cat bin_data
#cat bin_data_format
#cat command
#cat commands
#cat decimals
#cat device_name
#cat mode
#cat modes
#cat num_values
#cat value0
#cat value1
#cat value2
#cat value3
#cat value4
#cat value5
#cat value6
#cat value7 
#  nxt-i2c cat fw_version
#  nxt-12c cat poll_ms

        cat commands 2>/dev/null
        RC="$?"
        if [ "${RC}" == "0" ]; then
           # echo "commands implemented"
           cmd="`cat commands`"
        else
           # echo "commands returned RC=${RC}"  
           cmd="not implemented"
        fi
      
        echo -e "Process $i `pwd`" 
#        echo -e " sensor $i device_name: `cat device_name` on port `cat address` "
        echo -e " sensor $i driver_name: `cat driver_name` on port `cat address` "
        echo -e "address:              `cat address`"
        echo -e "mode:                 `cat mode`"
        echo -e "modes:                `cat modes`"
        echo -e "commands:             ${cmd}"
        echo -e "decimals:             `cat decimals`"
        echo -e "num_values:           `cat num_values`"
        num_values="`cat num_values`"
        for (( v=0; v<$num_values; v++ ))
        do
          echo -e  "value$v:               `cat value$v`"
        done
        echo -e "units:                `cat units`"
        echo -e "uevent:          \n`cat uevent` \n\n"
        hits=1
      fi  
  else
      echo -e "Expected path \"${sensors[$i]}\" does not exist"
  fi
done     
if [ $hits == 0  ];then
  echo -e "Requested sensor on port $selectport not available" 
fi