src/devices/tfa_pool_thermometer.c

   1 /* TFA pool temperature sensor
   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 pool_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,channel;
  21         int iTemp;
  22         float fTemp;
  23
  24
  25         for(i=1;i<8;i++){
  26                 if(bitbuffer->bits_per_row[i]!=28){
  27                         /*10 24 bits frame*/
  28                         return 0;
  29                 }
  30         }
  31
  32 /*
  33 AAAABBBB BBBBCCCC CCCCCCCC DDEE
  34
  35 A: ?
  36 B: device id (changing only after reset)
  37 C: templerature
  38 D: channel number
  39 E: ?
  40 */
  41
  42         device=(((bb[1][0]&0xF)<<4)+((bb[1][1]&0xF0)>>4));
  43         iTemp=((bb[1][1]&0xF)<<8)+bb[1][2];
  44         fTemp=(iTemp > 2048 ? iTemp - 4096 : iTemp) / 10.0;
  45         channel=(signed short)((bb[1][3]&0xC0)>>6);
  46
  47         data = data_make("time",        "",                     DATA_STRING,                                    time_str,
  48                      "model",           "",                     DATA_STRING,    "TFA pool temperature sensor",
  49                      "id",              "Id",                   DATA_FORMAT,    "\t %d",        DATA_INT,       device,
  50                      "channel",         "Channel number",       DATA_FORMAT,    "\t %d",        DATA_INT,       channel,
  51                      "temperature_C",   "Temperature",          DATA_FORMAT,    "%.01f C",      DATA_DOUBLE,    fTemp,
  52                      NULL);
  53     data_acquired_handler(data);
  54
  55     return 1;
  56
  57 }
  58
  59 static char *output_fields[] = {
  60         "time",
  61         "model",
  62         "id",
  63         "channel",
  64         "temperature_C",
  65         NULL
  66 };
  67
  68 r_device tfa_pool_thermometer = {
  69
  70   .name          = "TFA pool temperature sensor",
  71   .modulation    = OOK_PULSE_PPM_RAW,
  72   .short_limit   = 3500,
  73   .long_limit    = 7800,
  74   .reset_limit   = 10000,
  75   .json_callback = &pool_temperature_sensor_callback,
  76   .disabled      = 0,
  77   .demod_arg     = 0,
  78   .fields        = output_fields,
  79 };
  80