CRC16 class

libuavcan/include/uavcan/internal/transport/crc.hpp

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+namespace uavcan
+{
+
+/**
+ * CRC-16-CCITT
+ * Initial value: 0x0000
+ * Coefficient: 0x1021
+ */
+class Crc16
+{
+    static const uint16_t TABLE[256];
+    uint_fast16_t value_;
+
+public:
+    Crc16()
+    : value_(0x0000)
+    { }
+
+    uint16_t add(uint8_t byte);
+    uint16_t add(const uint8_t* bytes, int len);
+
+    uint16_t get() const { return value_; }
+};
+
+}