mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
synced 2026-10-28 20:33:34 +08:00
40 lines
560 B
C++
40 lines
560 B
C++
/*
|
|
* 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)
|
|
{ }
|
|
|
|
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);
|
|
|
|
uint16_t get() const { return value_; }
|
|
};
|
|
|
|
}
|