38 lines
1.2 KiB
Bash
38 lines
1.2 KiB
Bash
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#!/bin/sh
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# @Param1 tmp112 data high 8bit
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# @Param2 tmp112 data low 8bit
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# @Param3 customization sensor name
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convert_tmp112_data(){
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hex_value1=$(echo "$1" | awk '{sub(/^0x/,""); print}')
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hex_value2=$(echo "$2" | awk '{sub(/^0x/,""); print}')
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merge_value="${hex_value1}${hex_value2}"
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# bc calculator recognized upper case only, change data to upper case
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upper_hex_value=$(echo "$merge_value" | awk '{
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for(i=1; i<=length($0); i++){
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if(tolower(substr($0,i,1)) ~ /^[a-f]$/)
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printf toupper(substr($0,i,1));
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else
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printf substr($0,i,1);
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}
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print ""
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}')
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# change data from hex to dec
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dec_val=$(echo "ibase=16; $upper_hex_value" | bc)
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binary_number=$(echo "ibase=16;obase=2;$upper_hex_value" | bc)
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bin_length=$(echo $binary_number | awk '{print length($0)}')
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last_digit=$(echo $binary_number | cut -c $bin_length)
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if [ $last_digit -eq 0 ];then
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temp=$(echo "scale=4; $dec_val / 16 * 0.0625" | bc)
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elif [ $last_digit -eq 1 ];then
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temp=$(echo "scale=4; ( $dec_val - 1 ) / 8 * 0.0625" | bc)
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fi
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echo "$3 : $temp"
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}
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# E.G. ./plugin_tmp112.sh 0x08 0x40 temp
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convert_tmp112_data $1 $2 $3
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