Cyclic Redundancy Check Macro Definition Documentation
SYS_CRC_CONFIG
#define SYS_CRC_CONFIG Sys_Set_CRC_Config(CRC, (config))
Location: crc.h:164
Parameters
Direction | Name | Description |
---|---|---|
in |
config |
CRC generator configuration; use CRC_[CCITT | 32], CRC_[BIG | LITTLE]_ENDIAN, CRC_BIT_ORDER_[STANDARD | NON_STANDARD], CRC_FINAL_REVERSE_[STANDARD | NON_STANDARD], and CRC_FINAL_XOR_[STANDARD | NON_STANDARD] |
Assumptions
Note that D_CRC supports only CRC_CCITT mode, hence no configuration is applied for this instance.
Example Code for SYS_CRC_CONFIG |
// Configure the default CRC block to CRC-32 (IEEE 802.3) algorithm, // using little endian and non-standard (opposite) bit order SYS_CRC_CONFIG(CRC_32 | CRC_LITTLE_ENDIAN | CRC_BIT_ORDER_NON_STANDARD); |
SYS_CRC_32INITVALUE
#define SYS_CRC_32INITVALUE Sys_CRC_32InitValue(CRC)
Location: crc.h:173
Assumptions
Note that D_CRC supports only CRC_CCITT mode, hence no configuration is applied for this instance.
Example Code for SYS_CRC_32INITVALUE |
//Initialize the default CRC block for CRC-32 |
SYS_CRC_CCITTINITVALUE
#define SYS_CRC_CCITTINITVALUE Sys_CRC_CCITTInitValue(CRC)
Location: crc.h:181
Assumptions
CRC is configured to work in CRC-CCITT mode.
Example Code for SYS_CRC_CCITTINITVALUE |
//Initialize the default CRC block for CRC-CCITT |
SYS_CRC_GETCURRENTVALUE
#define SYS_CRC_GETCURRENTVALUE Sys_CRC_GetCurrentValue(CRC)
Location: crc.h:188
Example Code for SYS_CRC_GETCURRENTVALUE |
// Retrieve current value from the default CRC block |
SYS_CRC_GETFINALVALUE
#define SYS_CRC_GETFINALVALUE Sys_CRC_GetFinalValue(CRC)
Location: crc.h:200
Return
Assumptions
D_I2C only supports CRC-CCITT mode. Use Sys_CRC_GetCurrentValue instead. Returns initial value of CRC if D_CRC is passed or any other unknown instance.
Example Code for SYS_CRC_GETFINALVALUE |
// Retrieve final value from the default CRC block |
SYS_CRC_ADD
#define SYS_CRC_ADD Sys_CRC_Add(CRC, (data), (size))
Location: crc.h:209
Parameters
Direction | Name | Description |
---|---|---|
in |
data |
Data to add |
in |
size |
Size of data to add, 1, 8, 16, 24, 32 are valid. |
Example Code for SYS_CRC_ADD |
// Add 8 bits of data to the default CRC block SYS_CRC_ADD(0xF1, 8); |