This module implements CRC-16-CCITT (polynomial 0x1021) with 0xFFFF initial value. The data can be passed in multiple blocks. More...
Functions |
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| uint16_t | crc16_compute (uint8_t const *p_data, uint32_t size, uint16_t const *p_crc) |
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Function for calculating CRC-16 in blocks.
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Detailed Description
This module implements CRC-16-CCITT (polynomial 0x1021) with 0xFFFF initial value. The data can be passed in multiple blocks.
Function Documentation
| uint16_t crc16_compute | ( | uint8_t const * | p_data , |
| uint32_t | size , | ||
| uint16_t const * | p_crc | ||
| ) |
Function for calculating CRC-16 in blocks.
Feed each consecutive data block into this function, along with the current value of p_crc as returned by the previous call of this function. The first call of this function should pass NULL as the initial value of the crc in p_crc.
- Parameters
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[in] p_data The input data block for computation. [in] size The size of the input data block in bytes. [in] p_crc The previous calculated CRC-16 value or NULL if first call.
- Returns
- The updated CRC-16 value, based on the input supplied.