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[rtl-433.git] / src / devices / honeywell.c

diff --git a/src/devices/honeywell.c b/src/devices/honeywell.c
new file mode 100644 (file)
index 0000000..ea2c345
--- /dev/null
+++ b/src/devices/honeywell.c
@@ -0,0 +1,102 @@
+/*
+* *** Honeywell (Ademco) Door/Window Sensors (345.0Mhz) ***
+*
+* Tested with the Honeywell 5811 Wireless Door/Window transmitters
+*
+* 64 bit packets, repeated multiple times per open/close event
+*
+* Protocol whitepaper: "DEFCON 22: Home Insecurity" by Logan Lamb
+*
+* 0xfffe Preamble and sync bit
+* 0x8 Unknown
+* 0xYYYYY Device serial number
+* 0xYY Event Information (Open/Close, Heartbeat, etc)
+* 0xYYYY CRC
+*
+*/
+
+#include "rtl_433.h"
+#include "pulse_demod.h"
+#include "util.h"
+
+static int honeywell_callback(bitbuffer_t *bitbuffer) {
+  char time_str[LOCAL_TIME_BUFLEN];
+  const uint8_t *bb;
+  char device_id[6];
+  char hex[2];
+  char binary [65];
+  int heartbeat = 0;
+  uint16_t crc_calculated = 0;
+  uint16_t crc = 0;
+
+  local_time_str(0, time_str);
+
+  if(bitbuffer->num_rows != 1 || bitbuffer->bits_per_row[0] != 64)
+    return 0; // Unrecognized data
+
+  for(uint16_t i=0; i < 8; i++)
+    bitbuffer->bb[0][i] = ~bitbuffer->bb[0][i];
+
+  bb = bitbuffer->bb[0];
+
+  crc_calculated = crc16_ccitt(bb, 6, 0x8005, 0xfffe);
+  crc = (((uint16_t) bb[6]) << 8) + ((uint16_t) bb[7]);
+  if(crc != crc_calculated)
+    return 0; // Not a valid packet
+
+  sprintf(hex, "%02x", bb[2]);
+  device_id[0] = hex[1];
+  sprintf(hex, "%02x", bb[3]);
+  device_id[1] = hex[0];
+  device_id[2] = hex[1];
+  sprintf(hex, "%02x", bb[4]);
+  device_id[3] = hex[0];
+  device_id[4] = hex[1];
+  device_id[5] = '\0';
+
+  // Raw Binary
+  for (uint16_t bit = 0; bit < 64; ++bit) {
+      if (bb[bit/8] & (0x80 >> (bit % 8))) {
+              binary[bit] = '1';
+      } else {
+              binary[bit] = '0';
+      }
+  }
+  binary[64] = '\0';
+
+  data_t *data = data_make(
+                   "time",     "", DATA_STRING, time_str,
+                   "id",       "", DATA_STRING, device_id,
+                   "state",    "", DATA_STRING, ( (bb[5] & 0x80) == 0x00)? "closed":"open",
+                   "heartbeat" , "", DATA_STRING, ( (bb[5] & 0x04) == 0x04)? "yes" : "no",
+                   "crc", "", DATA_STRING, "ok",
+                   "time_unix","", DATA_INT, time(NULL),
+                   "binary",   "", DATA_STRING, binary,
+                          NULL);
+
+  data_acquired_handler(data);
+  return 1;
+}
+
+static char *output_fields[] = {
+        "time",
+        "id",
+        "state",
+        "heartbeat",
+        "crc",
+        "time_unix",
+        "binary",
+        NULL
+};
+
+r_device honeywell = {
+        .name                   = "Honeywell Door/Window Sensor",
+        .modulation             = OOK_PULSE_MANCHESTER_ZEROBIT,
+        .short_limit    =   39 * 4,
+        .long_limit             = 0,
+        .reset_limit    = 73 * 4,
+        .json_callback  = &honeywell_callback,
+        .disabled               = 0,
+        .demod_arg              = 0,
+        .fields                 = output_fields,
+};