From b76b05fc92bb0bcd1cd610d3f8d02c3a4518a310 Mon Sep 17 00:00:00 2001
From: Tommy Vestermark <tov@vestermark.dk>
Date: Fri, 21 Aug 2015 01:18:40 +0200
Subject: [PATCH] Add sensor Chuango (initial)

---
 include/rtl_433_devices.h |  3 ++-
 src/CMakeLists.txt        |  1 +
 src/devices/chuango.c     | 40 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 src/devices/chuango.c

diff --git a/include/rtl_433_devices.h b/include/rtl_433_devices.h
index dbcefc67..699cb983 100644
--- a/include/rtl_433_devices.h
+++ b/include/rtl_433_devices.h
@@ -31,7 +31,8 @@
 		DECL(gt_wt_02) \
 		DECL(danfoss_CFR) \
 		DECL(ec3k) \
-		DECL(valeo) 
+		DECL(valeo) \
+		DECL(chuango) 
 
 
 typedef struct {
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7c2dce71..695c7342 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -48,6 +48,7 @@ add_executable(rtl_433
 	devices/danfoss.c
 	devices/ec3k.c
 	devices/valeo.c
+	devices/chuango.c
 )
 
 target_link_libraries(rtl_433
diff --git a/src/devices/chuango.c b/src/devices/chuango.c
new file mode 100644
index 00000000..100a35f7
--- /dev/null
+++ b/src/devices/chuango.c
@@ -0,0 +1,40 @@
+/* Chuango Security Technology Corporation 
+ *
+ * PIR-900 PIR sensor
+ * DWC-100 Door sensor
+ *
+ * Copyright (C) 2015 Tommy Vestermark
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#include "rtl_433.h"
+
+
+static int chuango_callback(bitbuffer_t *bitbuffer) {
+	bitrow_t *bb = bitbuffer->bb;
+
+	// Validate package
+	unsigned bits = bitbuffer->bits_per_row[0];
+	if ((bits == 25)
+//	 && (bb[0][1] == 0xe8) && (bb[0][2] == 0xe8)	// Check a couple of preambles
+	) {
+		fprintf(stdout, "Chuango Security Sensor\n");
+		bitbuffer_print(bitbuffer);
+		return 1;
+	}
+	return 0;
+}
+
+
+r_device chuango = {
+	.name			= "Chuango Security Sensor",
+	.modulation		= OOK_PULSE_PWM_RAW,
+	.short_limit	= 284,	// Pulse Long 426, Short 142
+	.long_limit		= 500,	// Gaps Short 142, Long  424 
+	.reset_limit	= 500,	// Intermessage Gap 4298 (individually for now)
+	.json_callback	= &chuango_callback,
+	.disabled		= 0,
+	.demod_arg		= 0,	// Do not remove startbit
+};