src/W1CounterDevice.cc

   1 /*
   2  * W1CounterDevice.cc
   3  *
   4  *  Created on: Oct 30, 2010
   5  *      Author: lamikr
   6  */
   7
   8 #include <iostream>
   9 #include <fstream>
  10 #include <sstream>
  11 #include <iomanip>
  12
  13 #include <vector>
  14
  15 #include <plp/log.h>
  16
  17 #include "W1CounterDevice.hh"
  18
  19 using namespace std;
  20 using namespace w1;
  21
  22 template <class NumberDataType>
  23 bool string_to_number(NumberDataType& result,
  24                  const std::string& string_param,
  25                  std::ios_base& (*format)(std::ios_base&))
  26 {
  27         std::istringstream iss(string_param);
  28         return !(iss >> format >> result).fail();
  29 }
  30
  31 W1CounterDevice::W1CounterDevice(int family_code_param,
  32                                 string device_id_param,
  33                                 dirent *direntry_param): W1Device(family_code_param, device_id_param, direntry_param) {
  34         string text;
  35
  36         ifstream ifs(slave_file.c_str());
  37         if (ifs.is_open() == false) {
  38                 log_error("%s: %s failed to read data from file: %s\n", id.c_str(), get_device_type().c_str(), slave_file.c_str());
  39                 log_error("Verify that you have w1_ds2423 kernel module loaded.\n");
  40                 ifs.close();
  41         }
  42 }
  43
  44 W1CounterDevice::~W1CounterDevice() {
  45         // TODO Auto-generated destructor stub
  46 }
  47
  48 bool W1CounterDevice::is_supported_w1_family_code(int family_code) {
  49         bool    ret_val;
  50
  51         ret_val = false;
  52         switch(family_code) {
  53                 case 0x1d:
  54                         ret_val = true;
  55                         break;
  56         }
  57         return ret_val;
  58 }
  59
  60 vector<double> *W1CounterDevice::get_raw_data() {
  61         int             pos;
  62         int             b_cnt;
  63         string          val_str;
  64         int             val_dbl;
  65         vector<double>  *ret_val;
  66
  67         ret_val = NULL;
  68         ifstream ifs(slave_file.c_str());
  69         if (ifs.is_open() == true) {
  70                 while(getline(ifs, val_str)) {
  71                         b_cnt   = val_str.length();
  72                         if (b_cnt > 0) {
  73                                 pos     = val_str.find("crc=YES c=");
  74                                 if ((pos >= 0) &&
  75                                     ((pos + 10) < b_cnt)) {
  76                                         if (ret_val == NULL) {
  77                                                 ret_val = new vector<double>();
  78                                         }
  79                                         val_str = val_str.substr(pos + 10);
  80                                         string_to_number<int>(val_dbl, val_str, dec);
  81                                         ret_val->push_back(val_dbl);
  82                                 }
  83                         }
  84                 }
  85                 ifs.close();
  86         }
  87         return ret_val;
  88 }
  89
  90 string W1CounterDevice::get_unit() {
  91         return "";
  92 }
  93
  94 string W1CounterDevice::get_device_type() {
  95         return "Counter Device";
  96 }
  97
  98 unsigned int W1CounterDevice::get_data_decimal_precision() {
  99         return 0;
 100 }