src/devices/ht680.c

   1 /* HT680 Remote control
   2  *
   3  * Copyright (C) 2016 Igor Polovnikov
   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 #include "rtl_433.h"
  10
  11 static int ht680_callback(bitbuffer_t *bitbuffer) {
  12         bitrow_t *bb = bitbuffer->bb;
  13         data_t *data;
  14
  15         for (uint8_t row = 0;row < bitbuffer->num_rows;row++){
  16                 uint8_t *b = bb[row];
  17                 if(bitbuffer->bits_per_row[row] == 40 && //Length of packet is 40
  18                         (b[0] & 0x50) == 0x50 && //Sync mask 01010000
  19                         (b[1] & 0x0A) == 0x0A && //Address always mask 00001010
  20                         (b[3] & 0x82) == 0x82 && //Buttons(4,3) always mask 10000010
  21                         (b[4] & 0x0A) == 0x0A){  //Buttons(2,1) always mask 00001010
  22                         b[0] = b[0] & 0x0F; //Clear sync
  23
  24                         // Tristate coding
  25                         char tristate[21];
  26                         char *p = tristate;
  27                         for(uint8_t byte = 0; byte < 5; byte++){
  28                                 for(int8_t bit = 7; bit > 0; bit -= 2){
  29                                         switch ((b[byte] >> (bit-1)) & 0x03){
  30                                                 case 0x00:      *p++ = '0'; break;
  31                                                 case 0x01:      *p++ = '?'; break; //Invalid code 01
  32                                                 case 0x02:      *p++ = 'Z'; break; //Floating state Z is 10
  33                                                 case 0x03:      *p++ = '1'; break;
  34                                                 default: *p++ = '!'; break; //Unknown error
  35                                         }
  36                                 }
  37                         }
  38                         *p = '\0';
  39
  40                         data = data_make("model",       "",                             DATA_STRING,    "HT680 Remote control",
  41                                                          "tristate","Tristate code",DATA_STRING,        tristate,
  42                                                          "address",     "Address",      DATA_FORMAT,    "0x%06X", DATA_INT, (b[0]<<16)+(b[1]<<8)+b[2],
  43                                                          "button1",     "Button 1",             DATA_STRING,    (((b[4]>>4) & 0x03) == 3) ? "PRESSED" : "",
  44                                                          "button2",     "Button 2",             DATA_STRING,    (((b[4]>>6) & 0x03) == 3) ? "PRESSED" : "",
  45                                                          "button3",     "Button 3",             DATA_STRING,    ((((b[3]&0x7D)>>2) & 0x03) == 3) ? "PRESSED" : "",
  46                                                          "button4",     "Button 4",             DATA_STRING,    ((((b[3]&0x7D)>>4) & 0x03) == 3) ? "PRESSED" : "",
  47                                                          NULL);
  48                         data_acquired_handler(data);
  49
  50                         return 1;
  51                 }
  52         }
  53         return 0;
  54 }
  55
  56 static char *output_fields[] = {
  57         "model",
  58         "tristate",
  59         "address",
  60         "data",
  61         "button1",
  62         "button2",
  63         "button3",
  64         "button4",
  65         NULL
  66 };
  67
  68 r_device ht680 = {
  69   .name          = "HT680 Remote control",
  70   .modulation    = OOK_PULSE_PWM_RAW,
  71   .short_limit   = 400,
  72   .long_limit    = 1200,
  73   .reset_limit   = 13000,
  74   .json_callback = &ht680_callback,
  75   .disabled      = 0,
  76   .demod_arg     = 1
  77 };