Init

.gitignore

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+.idea/
+lin_temp_mon.csv

go.mod

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+module temp_monitor
+
+go 1.20

lin_temp_mon.go

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+package main
+
+import (
+	"encoding/csv"
+	"fmt"
+	"log"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func readTemp() string {
+	temperatureFilePath := "/sys/class/hwmon/hwmon6/temp1_input"
+	f, err := os.ReadFile(temperatureFilePath)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+	//defer f.Close()
+	tempFloat, err := strconv.ParseFloat(strings.Fields(string(f))[0], 32)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tempFloat = tempFloat / 1000
+
+	return string(fmt.Sprintf("%f", tempFloat))
+}
+
+func writeCsv(temp string, load string) {
+	// Input: temp, load
+	// Result: write data to CSV file
+	t := time.Now()
+	timestamp := t.Unix()
+	targetFile := "lin_temp_mon.csv"
+	fmt.Println(temp, load, timestamp)
+
+	targetArr := []string{strconv.FormatInt(timestamp, 10), load, temp}
+
+	f, err := os.OpenFile(targetFile, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
+	if err != nil {
+		log.Fatal("Error: ", err)
+		return
+	}
+	w := csv.NewWriter(f)
+	err = w.Write(targetArr)
+	if err != nil {
+		log.Fatal("Error: ", err)
+		return
+	}
+	w.Flush()
+	f.Close()
+}
+
+func getPerCPU() string {
+	loadavgFile := "/proc/loadavg"
+	nproc := float64(runtime.NumCPU())
+
+	loadAvgRaw, err := os.ReadFile(loadavgFile)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+	//defer loadAvgRaw.Close()
+
+	loadAvgCur, err := strconv.ParseFloat(strings.Fields(string(loadAvgRaw))[0], 32)
+
+	loadPerCpu := loadAvgCur / nproc
+
+	return string(fmt.Sprintf("%f", loadPerCpu))
+
+}
+
+func main() {
+	// Timestamp, LA, Temp
+	writeCsv(readTemp(), getPerCPU())
+}