foxBMS-UnitTests
1.0.0
The foxBMS Unit Tests API Documentation
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CRC8 calculation for Maxim Integrated Monitoring devices. More...
#include "mxm_crc8.h"
Go to the source code of this file.
Functions | |
uint8_t | MXM_CRC8WithInitValue (uint16_t *pData, int32_t lenData, uint8_t crcInit) |
Compute CRC8 (0xA6) with initial value. More... | |
uint8_t | MXM_CRC8 (uint16_t *pData, int32_t lenData) |
Compute CRC8 with initial value set to 0x00. More... | |
STD_RETURN_TYPE_e must_check_return | MXM_CRC8SelfTest () |
Test the CRC8-algorithm with a known pattern. More... | |
Variables | |
static const uint8_t | mxm_crc8Table [256] |
Precomputed CRC8-table for polynomial 0xA6. More... | |
CRC8 calculation for Maxim Integrated Monitoring devices.
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This module supports the calculation of a CRC8 based on the polynomial described in the Maxim datasheets. The polynomial is 0xA6.
Definition in file mxm_crc8.c.
uint8_t MXM_CRC8 | ( | uint16_t * | pData, |
int32_t | lenData | ||
) |
Compute CRC8 with initial value set to 0x00.
Computes the CRC8 for the given data with the given length with the polynomial 0xA6. This function calls MXM_CRC8WithInitValue() with CRC set to 0x00. The result should be 0x00 if you include the CRC into the datastream.
[in] | pData | array-pointer with data to be cyclic redundancy checked |
[in] | lenData | length of array |
Definition at line 117 of file mxm_crc8.c.
STD_RETURN_TYPE_e must_check_return MXM_CRC8SelfTest | ( | void | ) |
Test the CRC8-algorithm with a known pattern.
Tests the CRC8-algorithm with known patterns and asserts that the implementation matches the required algorithm.
Definition at line 121 of file mxm_crc8.c.
uint8_t MXM_CRC8WithInitValue | ( | uint16_t * | pData, |
int32_t | lenData, | ||
uint8_t | crcInit | ||
) |
Compute CRC8 (0xA6) with initial value.
Computes the CRC8 for the given data with the polynomial 0xA6.
[in] | pData | array-pointer with data to be cyclic redundancy checked |
[in] | lenData | length of array |
[in] | crcInit | initial CRC-value |
Definition at line 105 of file mxm_crc8.c.
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static |
Precomputed CRC8-table for polynomial 0xA6.
This array contains the precomputed results for the look-up-table-based computation of a CRC8 with polynomial 0xA6. The polynomial-number represents the coefficients of the polynomial like this: 8 7 6 5 4 3 2 1 0 1 0 1 0 0 1 1 0 1 --> 14D
This polynomial can also be called 0x14D according to the notation (0xA6 << 1).
Definition at line 78 of file mxm_crc8.c.