#ifndef CRC_H
#define CRC_H
#include <QObject>
#include "stdint-gcc.h"
#include "QString"
#include "QByteArray"

#define DECODE 0
#define ENCODE 1

typedef union
{
  int32_t l_data;
  uint32_t ul_data;
  uint8_t uc_databuf[4];
  char c_databuf[4];
  uint16_t us_databuf[2];
  int16_t s_databuf[2];
} ConverBuf;

class crc
{
public:
  crc();
  static int8_t CheckSumCode(uint8_t CODEMODE, uint8_t *pBuffer, uint16_t Len, uint16_t offset, uint8_t *CHKA, uint8_t *CHKB);
  static int CheckSumCode(uint8_t CODEMODE, QByteArray pBuffer, uint16_t Len, uint16_t offset, uint8_t *CHKA, uint8_t *CHKB);

  static QString byte_array_to_string(QByteArray data);
  static QString byte_array_to_int_string(QByteArray data);
  static QString uint8_array_to_string(uint8_t *buf, int len);

  static uint8_t crc8(uint8_t *Ptr, uint8_t num);
  static void crc16(uint8_t *data, int offset, int len, uint8_t *lb, uint8_t *hb);
  static uint32_t crc32(const QByteArray &data_buf);
};

#endif // CRC_H