45 lines
1.4 KiB
Bash
45 lines
1.4 KiB
Bash
#!/bin/sh
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# @Param1 emc1413 data high 8bit
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# @Param2 emc1413 data low 8bit
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# @Param3 customization channel name
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convert_emc1413_data(){
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# remove data prefix '0x'
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hex_value1=$(echo "$1" | awk '{sub(/^0x/,""); print}')
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hex_value2=$(echo "$2" | awk '{sub(/^0x/,""); print}')
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# bc calculator recognized upper case only, change data to upper case
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upper_hex_value1=$(echo "$hex_value1" | 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($0,i,1);
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}
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print ""
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}')
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upper_hex_value2=$(echo "$hex_value2" | 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($0,i,1);
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}
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print ""
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}')
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# change data from hex to dec
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dec_value1=$(echo "ibase=16; $upper_hex_value1" | bc)
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dec_value2=$(echo "ibase=16; $upper_hex_value2" | bc)
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# calculate tempreture
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temp=$(echo "scale=4; $dec_value1 + ($dec_value2 / 32 * 0.125 )" | bc)
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# print result to consol
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format_temp=$(echo "$temp" | awk '{ if ($0 ~ /^\./) print "0" $0; else print $0 }')
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echo "$3 : $format_temp C, hex value : $hex_value1 $hex_value2"
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}
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convert_emc1413_data $1 $2 $3 |