src/devices/kerui.c

   1 /* Kerui PIR sensor
   2 *
   3 *       Code derrived from akhan_100F14.c
   4 *
   5 * Such as
   6 * http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xkerui+pir.TRS0&_nkw=kerui+pir&_sacat=0
   7 */
   8
   9 #include "rtl_433.h"
  10 #include "pulse_demod.h"
  11 #include "util.h"
  12 #include "data.h"
  13
  14 static int kerui_callback(bitbuffer_t *bitbuffer) {
  15
  16         int isKerui = 0;
  17         data_t *data;
  18         char time_str[LOCAL_TIME_BUFLEN];
  19         uint32_t ID;
  20         uint32_t dataBits;
  21
  22         char *CMD;
  23
  24         bitrow_t *bb = bitbuffer->bb;
  25
  26         for (int i=0; i<bitbuffer->num_rows; i++) {
  27                 uint8_t *b = bb[i];
  28
  29                 //invert bits, short pulse is 0, long pulse is 1
  30                 b[0] = ~b[0];
  31                 b[1] = ~b[1];
  32                 b[2] = ~b[2];
  33
  34                 unsigned bits = bitbuffer->bits_per_row[i];
  35
  36                 if (bits == 25) {
  37                         local_time_str(0, time_str);
  38
  39                         ID = (b[0] << 12) | (b[1] << 4) | (b[2] >> 4);
  40                         dataBits = b[2] & 0x0F;
  41
  42                         switch (dataBits) {
  43                                 case 0xa:
  44                                         isKerui = 1;
  45                                         CMD = "0xa (PIR)";
  46                                         break;
  47                                 case 0xe:
  48                                         isKerui = 1;
  49                                         CMD = "0xe (DOOR)";
  50                                         break;
  51                                 default:
  52                                         isKerui = 0;
  53                                         break;
  54                         }
  55
  56                 }
  57
  58                 if (isKerui == 1) break;
  59
  60         }
  61
  62         if (isKerui == 1) {
  63                 data = data_make(       "time",         "",                             DATA_STRING,    time_str,
  64                                         "device",       "",                             DATA_STRING,    "Kerui Sensor",
  65                                         "id",                   "ID (20bit)",   DATA_FORMAT,    "0x%x",         DATA_INT, ID,
  66                                         "data",         "Data (4bit)",  DATA_STRING,    CMD,
  67                                         NULL);
  68                 data_acquired_handler(data);
  69                 return 1;
  70         } else {
  71                 return 0;
  72         }
  73 }
  74
  75 static char *output_fields[] = {
  76     "time",
  77     "device",
  78     "id",
  79     "data",
  80     "other",
  81     NULL
  82 };
  83
  84 PWM_Precise_Parameters pwm_precise_parameters_kerui = {
  85         .pulse_tolerance        = 20,
  86         .pulse_sync_width       = 0,
  87 };
  88
  89 r_device kerui = {
  90         .name          = "Kerui Sensor",
  91         .modulation    = OOK_PULSE_PWM_RAW,
  92         .short_limit   = 340,
  93         .long_limit    = 1200,
  94         .reset_limit   = 1800,
  95         .json_callback = &kerui_callback,
  96         .disabled      = 0,
  97         .demod_arg     = (uintptr_t)&pwm_precise_parameters_kerui,
  98 };