Module to declare System CRC API.
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#define | SYS_CRC_INIT 0 |
| Defines an initial value for the CRC sum.
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typedef uint16_t | sys_crc_t |
| CRC value type. This module uses 16-bit CRC.
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Module to declare System CRC API.
The CRC module implements a set of routines to compute the 16-bit CRC value for octet arrays.
sys_crc_t sys_crc_calc |
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const uint8_t * |
p_data, |
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size_t |
length |
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Function for computing CRC value for given data.
- Parameters
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[in] | p_data | Pointer to data to compute. |
[in] | length | Length of data. |
- Returns
- Returns the CRC value for input data.
sys_crc_t sys_crc_continue |
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sys_crc_t |
current_crc, |
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const uint8_t * |
p_data, |
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size_t |
length |
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) |
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Function for updating the CRC value taking into the account the previously counted value.
This function is used when input data is represented by several pieces. Consequently, a call to this function for each piece will give a correct total CRC value.
- Parameters
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[in] | current_crc | Previously counted CRC value. Should be SYS_CRC_INIT for the first piece. |
[in] | p_data | Pointer to the current piece of data. |
[in] | length | Length of the current piece of data. |
- Returns
- Returns the updated CRC value.