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
  11 #include "W1CounterDevice.hh"
  12
  13 using namespace std;
  14 using namespace w1;
  15
  16 W1CounterDevice::W1CounterDevice(dirent *direntry,
  17                                 int family_code_param,
  18                                 string id_param): W1Device(direntry, family_code_param, id_param) {
  19         ifstream ifs(slave_file.c_str());
  20         if (ifs.is_open() == false) {
  21                 string text;
  22
  23                 text    = get_time() + ": device type = " + get_devicetype_name() + ", id = " + id + ", could not read file: " + slave_file;
  24                 cout << text << endl;
  25                 cout << "verify that you have w1_ds2423 kernel module loaded." << endl;
  26         }
  27         else {
  28                 ifs.close();
  29         }
  30 }
  31
  32 W1CounterDevice::~W1CounterDevice() {
  33         // TODO Auto-generated destructor stub
  34 }
  35
  36 bool W1CounterDevice::is_supported_family_code(int family_code) {
  37         bool    ret_val;
  38
  39         ret_val = false;
  40         switch(family_code) {
  41                 case 0x1d:
  42                         ret_val = true;
  43                         break;
  44         }
  45         return ret_val;
  46 }
  47
  48 string W1CounterDevice::get_value() {
  49         string          ret_val;
  50         string          value_line;
  51         int             pos;
  52         int             length;
  53         int             ii;
  54
  55         ret_val = "<could not read>";
  56         ifstream ifs(slave_file.c_str());
  57         if (ifs.is_open() == true) {
  58                 ret_val = "";
  59                 while(getline(ifs, value_line)) {
  60                         length  = value_line.length();
  61                         if (length > 0) {
  62                                 pos     = value_line.find("crc=YES c=");
  63                                 if ((pos >= 0) &&
  64                                     (pos + 10 < length)) {
  65                                         value_line      = value_line.substr(pos + 10);
  66                                 }
  67                                 else {
  68                                         value_line      = "";
  69                                 }
  70                         }
  71                         else {
  72                                 value_line      = "";
  73                         }
  74                         if (ret_val.length() == 0) {
  75                                 ret_val = value_line;
  76                         }
  77                         else {
  78                                 ret_val = ret_val + "|" + value_line;
  79                         }
  80                 }
  81                 ifs.close();
  82         }
  83         return ret_val;
  84 }
  85
  86 string W1CounterDevice::get_unit() {
  87         return "";
  88 }
  89
  90 string W1CounterDevice::get_devicetype_name() {
  91         return "Counter Device";
  92 }