public static String readLine(int cpu) throws IOException {
        String filename = "";
        if (cpu == modem){//射頻
            filename = "/sys/devices/virtual/thermal/thermal_zone0/temp";
        }else if (cpu == cpu0_cpu2){
            filename = "/sys/devices/virtual/thermal/thermal_zone3/temp";
        }else
 
 if (cpu == cpu1_cpu3){
            filename = "/sys/devices/virtual/thermal/thermal_zone4/temp";
        }else if (cpu == qdsp_cam){//cam資料處理
            filename = "/sys/devices/virtual/thermal/thermal_zone1/temp";
        }
        BufferedReader reader = new BufferedReader(new FileReader(filename), 256);
        try
 
 {
            return reader.readLine() + "℃";
        } finally {
            reader.close();
        }
    }