src/devices/generic_temperature_sensor.c

   1 /* Generic temperature sensor 1
   2  *
   3  * Copyright (C) 2015 Alexandre Coffignal
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  */
  10 #include "data.h"
  11 #include "rtl_433.h"
  12 #include "util.h"
  13
  14
  15 static int generic_temperature_sensor_callback(bitbuffer_t *bitbuffer) {
  16         bitrow_t *bb = bitbuffer->bb;
  17         data_t *data;
  18         char time_str[LOCAL_TIME_BUFLEN];
  19     local_time_str(0, time_str);
  20         int i,device,battery;
  21         float fTemp;
  22
  23
  24         for(i=1;i<10;i++){
  25                 if(bitbuffer->bits_per_row[i]!=24){
  26                         /*10 24 bits frame*/
  27                         return 0;
  28                 }
  29         }
  30
  31         //AAAAAAAA BBCCCCCC CCCCCCCC
  32         //AAAAAAAA     : ID
  33         //BBBB         : battery ?
  34         //CCCCCCCCCCCC : Temp
  35
  36         device=(bb[1][0]);
  37         battery=(bb[1][1]&0xF0)>>4;
  38         fTemp=(float)((signed short)(((bb[1][1]&0x3f)*256+bb[1][2])<<2))/160.0;
  39
  40         data = data_make("time",        "",                     DATA_STRING,                                    time_str,
  41                      "model",           "",                     DATA_STRING,    "Generic temperature sensor 1",
  42                      "id",              "Id",                   DATA_FORMAT,    "\t %d",        DATA_INT,       device,
  43                      "temperature_C",   "Temperature",          DATA_FORMAT,    "%.02f C",      DATA_DOUBLE,    fTemp,
  44                      "battery",         "Battery?",             DATA_INT,                                       battery,
  45                      NULL);
  46     data_acquired_handler(data);
  47
  48     return 1;
  49
  50 }
  51
  52 static char *output_fields[] = {
  53         "time",
  54         "model",
  55         "id",
  56         "temperature_C",
  57         "battery",
  58         NULL
  59 };
  60
  61 r_device generic_temperature_sensor = {
  62
  63   .name          = "Generic temperature sensor 1",
  64   .modulation    = OOK_PULSE_PPM_RAW,
  65   .short_limit   = 3500,
  66   .long_limit    = 4800,
  67   .reset_limit   = 10000,
  68   .json_callback = &generic_temperature_sensor_callback,
  69   .disabled      = 0,
  70   .demod_arg     = 0,
  71   .fields        = output_fields,
  72 };
  73