src/devices/hondaremote.c

   1 /* Honda Car Key
   2  *
   3  * Identifies button event, but does not attempt to decrypt rolling code...
   4  *
   5  * Copyright (C) 2016 Adrian Stevenson
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11 #include "rtl_433.h"
  12 #include "data.h"
  13 #include "util.h"
  14
  15 static const char* command_code[] ={"boot", "unlock" , "lock",};
  16
  17 static const char* get_command_codes(const uint8_t* bytes) {
  18         return command_code[bytes[46] - 0xAA];
  19         }
  20
  21 static int hondaremote_callback(bitbuffer_t *bitbuffer) {
  22         bitrow_t *bb = bitbuffer->bb;
  23         uint8_t *bytes = bitbuffer->bb[0];
  24         char time_str[LOCAL_TIME_BUFLEN];
  25         data_t *data;
  26         uint16_t device_id;
  27
  28  for (int i = 0; i < bitbuffer->num_rows; i++)
  29 {
  30         // Validate package
  31                 if (((bitbuffer->bits_per_row[i] >385) && (bitbuffer->bits_per_row[i] <=394)) &&
  32          ((bytes[0] == 0xFF ) && (bytes[38] == 0xFF)))
  33          {
  34
  35         if (debug_output) {
  36         fprintf (stdout,"passed validation bits per row %02d\n",(bitbuffer->bits_per_row[i]));
  37                         for (unsigned n=40; n<(50); ++n)
  38                                 {
  39                                 fprintf(stdout,"Byte %02d", n);
  40                                 fprintf(stdout,"= %02X\n", bytes[n]);
  41                                 }
  42                         }
  43
  44 //call function to lookup what button was pressed
  45         const char* code = get_command_codes(bytes);
  46         device_id = (bytes[44]>>8|bytes[45]);
  47
  48  /* Get time now */
  49         local_time_str(0, time_str);
  50      data = data_make(
  51                         "time",         "",     DATA_STRING, time_str,
  52                         "model",        "",     DATA_STRING, "Honda Remote",
  53                         "device id",    "",    DATA_INT, device_id,
  54                         "code",         "",    DATA_STRING, code,
  55                       NULL);
  56
  57        data_acquired_handler(data);
  58        return 1;
  59         }
  60 return 0;
  61 }
  62 return 0;
  63 }
  64 static char *output_fields[] = {
  65         "time",
  66         "model",
  67         "device id",
  68         "code",
  69         NULL
  70         };
  71
  72
  73 r_device hondaremote = {
  74         .name                   = "Honda Car Key",
  75         .modulation             = FSK_PULSE_PWM_RAW,
  76         .short_limit    = 300,
  77         .long_limit             = 800,  // Not used
  78         .reset_limit    = 2000,
  79         .json_callback  = &hondaremote_callback,
  80         .disabled               = 0,
  81         .demod_arg              = 0,
  82         .fields         = output_fields
  83 };