80 lines
2.9 KiB
Bash
80 lines
2.9 KiB
Bash
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#!/bin/sh
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EMC1413_Channel0_name="Channel 0"
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EMC1413_Channel1_name="Channel 1"
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EMC1413_Channel2_name="Channel 2"
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REG_emc1413_TD1_H="0x00"
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REG_emc1413_TD1_L="0x29"
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REG_emc1413_TD2_H="0x01"
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REG_emc1413_TD2_L="0x10"
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REG_emc1413_TD3_H="0x23"
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REG_emc1413_TD3_L="0x24"
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# 处理EMC1413读到的数据并输出结果
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# @Param1 emc1413读取数据高位
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# @Param2 emc1413读取数据低位
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# @Param3 channel号/定制化名称
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convert_emc1413_data(){
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# 将读取到的两位数据去掉 0x 前缀
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hex_value1=$(echo "$1" | awk '{sub(/^0x/,""); print}')
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hex_value2=$(echo "$2" | awk '{sub(/^0x/,""); print}')
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# 由于 bc 计算器只能识别大写的 十六进制数据，将小写的十六进制数据全部转化为大写的数据
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upper_hex_value1=$(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($0,i,1);
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}
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print ""
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}')
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# 转化为10进制数据
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dec_value1=$(echo "ibase=16; $upper_hex_value1" | bc)
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dec_value2=$(echo "ibase=16; $upper_hex_value2" | bc)
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# 计算温度值
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temp=$(echo "scale=4; $dec_value1 + ($dec_value2 / 32 * 0.125 )" | bc)
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# 格式化输出数据
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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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# 读取EMC1413芯片每个通道的数据,随后调用数据处理函数进行数据解析并输出
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read_emc1413_channel_value(){
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format_log_print $INFO "Start EMC1413 channel data ..."
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res_td1_h=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD1_H r1`
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res_td1_l=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD1_L r1`
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res_td2_h=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD2_H r1`
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res_td2_l=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD2_L r1`
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res_td3_h=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD3_H r1`
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res_td3_l=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_emc1413_TD3_L r1`
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# 将 I2C 读取的 raw 数据记录到调试日志中
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format_log_print $INFO "channel 1 : $res_td1_h $res_td1_l"
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format_log_print $INFO "channel 2 : $res_td2_h $res_td2_l"
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format_log_print $INFO "channel 3 : $res_td3_h $res_td3_l"
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# start parse raw data
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echo ">>> The emc1413 value is:"
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convert_emc1413_data $res_td1_h $res_td1_l $EMC1413_Channel0_name
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convert_emc1413_data $res_td2_h $res_td2_l $EMC1413_Channel1_name
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convert_emc1413_data $res_td3_h $res_td3_l $EMC1413_Channel2_name
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}
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