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CRC16.h File Reference

CRC16 Declarations. More...

`#include <inttypes.h>`
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## Macros
#define | CRC16_INIT_VALUE 0xFFFF
| initial value for CRC algorithem
#define | CRC16_GOOD_VALUE 0x0F47
| constant compare value for check
#define | CRC16_POLYNOM 0x8408
| 16-BIT CRC CCITT POLYNOM

## Functions
UINT16 | CRC16_Calc (UINT8 *data, UINT16 length, UINT16 initVal)
| Calc CRC16. More...
bool | CRC16_Check (UINT8 *data, UINT16 length, UINT16 initVal)
| Calc & Check CRC16. More...

## Detailed Description

CRC16 Declarations.

Version
  0.2

Declarations for 16-BIT CRC CCITT calculation

Author
  (KvW), IMST

## Function Documentation

UINT16 CRC16_Calc | ( | UINT8 * | data,
|  | UINT16 | length,
|  | UINT16 | initVal
| ) |  |

Calc CRC16.

Calc CRC16.

This function calculates the one's complement of the standard 16-BIT CRC CCITT polynomial G(x) = 1 + x^5 + x^12 + x^16

Parameters

  [in] | data | pointer to data block
  [in] | length | number of bytes
  [in] | initVal | CRC16 initial value

Return values

  crc16 | crc

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bool CRC16_Check | ( | UINT8 * | data,
|  | UINT16 | length,
|  | UINT16 | initVal
| ) |  |

Calc & Check CRC16.

Calc & Check CRC16.

This function checks a data block with attached CRC16

Parameters

  [in] | data | pointer to data block
  [in] | length | number of bytes (including CRC16)
  [in] | initVal | CRC16 initial value

Return values

  true | CRC16 ok -> data block ok
  false | CRC16 failed -> data block corrupt

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