#!/bin/sh

log="/tmp/nicsensor_debug.log"

INFO="Info"
WARNING="Warning"
ERROR="Error"

votage_division_factor_0="1"
votage_division_factor_1="1"
votage_division_factor_2="1"
votage_division_factor_3="0.8"
votage_division_factor_4="0.6"
votage_division_factor_5="0.6"
votage_division_factor_6="0.2326"
votage_division_factor_7="1"

ADC128_Channel0_name="Channel 0"
ADC128_Channel1_name="Channel 1"
ADC128_Channel2_name="Channel 2"
ADC128_Channel3_name="Channel 3"
ADC128_Channel4_name="Channel 4"
ADC128_Channel5_name="Channel 5"
ADC128_Channel6_name="Channel 6"
ADC128_Channel7_name="Channel 7"

REG_adc128_config="0x00"
REG_adc128_advance="0x0b"
REG_adc128_status="0x0c"
REG_adc128_ch0="0x20"
REG_adc128_ch1="0x21"
REG_adc128_ch2="0x22"
REG_adc128_ch3="0x23"
REG_adc128_ch4="0x24"
REG_adc128_ch5="0x25"
REG_adc128_ch6="0x26"
REG_adc128_ch7="0x27"

# 进行ADC128芯片的初始化
check_adc128_init(){
    # Get Reg 0x00 status
    res_adc128_status=`i2cget -y $i2c_bus $chip_slave $REG_adc128_config`
    format_log_print $INFO "REG adc128 STATUS : $res_adc128_status"

    # if stauts is not 0x01 (Start Monitor) ,then do init
    if [ "$res_adc128_status" != "0x01" ];then
        format_log_print $INFO "Start Init ADC128 Chip"
        # Init ADC128 work as mode 1 (0x02)
        res_adc128_advance=`i2ctransfer -y $i2c_bus w2@$chip_slave $REG_adc128_advance 0x02`
        # Set ADC128 on start (0x01)
        res_adc128_setstart=`i2ctransfer -y $i2c_bus w2@$chip_slave $REG_adc128_config 0x01 r1`

        format_log_print $INFO "After Set status, the REG 0x00 value is $res_adc128_setstart"
    fi
}

# 处理ADC128读到的数据并输出结果
# @Param 1 ADC128读取数据高位
# @Param 2 ADC128读取数据低位
# @Param 3 channel号/定制化名称
# @Param 4 分压系数
convert_adc128_data(){
    # 将读取到的两位数据拼接起来
    hex_value1=$(echo "$1" | awk '{sub(/^0x/,""); print}')
    hex_value2=$(echo "$2" | awk '{sub(/^0x/,""); print}')
    merge_value="${hex_value1}${hex_value2}"

    # 由于 bc 计算器只能识别大写的 十六进制数据，这里将小写的十六进制数据全部转化为大写的数据
    upper_hex_value=$(echo "$merge_value" | awk '{ 
        for(i=1; i<=length($0); i++){ 
            if(tolower(substr($0,i,1)) ~ /^[a-f]$/) 
                printf toupper(substr($0,i,1)); 
            else 
                printf substr($0,i,1); 
        } 
        print "" 
    }')

    # 利用bc计算器进行运算，并将返回值格式化后输出
    dec_val=$(echo "ibase=16; $upper_hex_value" | bc)
    volt=$(echo "scale=4; $dec_val / 16 / 4096 * 2.65 / $4" | bc)
    format_volt=$(echo "$volt" | awk '{ if ($0 ~ /^\./) print "0" $0; else print $0 }')

    echo "$3 : $format_volt v, hex value: $upper_hex_value"
}

# 读取ADC128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
read_adc128_channel_value(){
    format_log_print $INFO "Start Read ADC128 channel data ..."

    res_ch0=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch0 r2`
    res_ch1=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch1 r2`
    res_ch2=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch2 r2`
    res_ch3=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch3 r2`
    res_ch4=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch4 r2`
    res_ch5=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch5 r2`
    res_ch6=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch6 r2`
    res_ch7=`i2ctransfer -y $i2c_bus w1@$chip_slave $REG_adc128_ch7 r2`

    # 将 I2C 读取的 raw 数据记录到调试日志中
    format_log_print $INFO "channel0 : $res_ch0"
    format_log_print $INFO "channel1 : $res_ch1"
    format_log_print $INFO "channel2 : $res_ch2"
    format_log_print $INFO "channel3 : $res_ch3"
    format_log_print $INFO "channel4 : $res_ch4"
    format_log_print $INFO "channel5 : $res_ch5"
    format_log_print $INFO "channel6 : $res_ch6"
    format_log_print $INFO "channel7 : $res_ch7"

    # start parse raw data
    echo ">>> The ADC128 value is :"
    convert_adc128_data $res_ch0 $ADC128_Channel0_name $votage_division_factor_0
    convert_adc128_data $res_ch1 $ADC128_Channel1_name $votage_division_factor_1
    convert_adc128_data $res_ch2 $ADC128_Channel2_name $votage_division_factor_2
    convert_adc128_data $res_ch3 $ADC128_Channel3_name $votage_division_factor_3
    convert_adc128_data $res_ch4 $ADC128_Channel4_name $votage_division_factor_4
    convert_adc128_data $res_ch5 $ADC128_Channel5_name $votage_division_factor_5
    convert_adc128_data $res_ch6 $ADC128_Channel6_name $votage_division_factor_6
    convert_adc128_data $res_ch7 $ADC128_Channel7_name $votage_division_factor_7
}