From d4e4f1a416dad86a908eb68399e941b6e624d67f Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Tue, 11 Feb 2014 12:36:54 +0400
Subject: [PATCH] Added CRC initializing constructor

---
 libuavcan/include/uavcan/internal/transport/crc.hpp | 6 ++++++
 libuavcan/test/transport/crc.cpp                    | 7 ++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/libuavcan/include/uavcan/internal/transport/crc.hpp b/libuavcan/include/uavcan/internal/transport/crc.hpp
index ece09ae5e2..88788b528c 100644
--- a/libuavcan/include/uavcan/internal/transport/crc.hpp
+++ b/libuavcan/include/uavcan/internal/transport/crc.hpp
@@ -24,6 +24,12 @@ public:
     : value_(0x0000)
     { }
 
+    Crc16(const uint8_t* bytes, int len)
+    : value_(0x0000)
+    {
+        add(bytes, len);
+    }
+
     uint16_t add(uint8_t byte);
     uint16_t add(const uint8_t* bytes, int len);
 
diff --git a/libuavcan/test/transport/crc.cpp b/libuavcan/test/transport/crc.cpp
index 46442e6192..f21ddc2412 100644
--- a/libuavcan/test/transport/crc.cpp
+++ b/libuavcan/test/transport/crc.cpp
@@ -9,9 +9,7 @@
 
 TEST(Crc16, Correctness)
 {
-    using uavcan::Crc16;
-
-    Crc16 crc;
+    uavcan::Crc16 crc;
 
     ASSERT_EQ(0x0000, crc.get());
 
@@ -22,4 +20,7 @@ TEST(Crc16, Correctness)
 
     crc.add(reinterpret_cast<const uint8_t*>("Foobar"), 6);
     ASSERT_EQ(53881, crc.get());
+
+    // Initializing constructor
+    ASSERT_EQ(crc.get(), uavcan::Crc16(reinterpret_cast<const uint8_t*>("123Foobar"), 9).get());
 }