Cyclic Redundancy Check with Configurable Polynomial (CRCP)

Macros
#define	DL_CRC_POLYNOMIAL_SIZE_16   DL_CRCP_POLYNOMIAL_SIZE_16
	Redirects to DL_CRCP_POLYNOMIAL_SIZE_16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_POLYNOMIAL_SIZE_32   DL_CRCP_POLYNOMIAL_SIZE_32
	Redirects to DL_CRCP_POLYNOMIAL_SIZE_32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_BIT_REVERSED   DL_CRCP_BIT_REVERSED
	Redirects to DL_CRCP_BIT_REVERSED for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_BIT_NOT_REVERSED   DL_CRCP_BIT_NOT_REVERSED
	Redirects to DL_CRCP_BIT_NOT_REVERSED for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_INPUT_ENDIANESS_LITTLE_ENDIAN   DL_CRCP_INPUT_ENDIANESS_LITTLE_ENDIAN
	Redirects to DL_CRCP_INPUT_ENDIANESS_LITTLE_ENDIAN for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_INPUT_ENDIANESS_BIG_ENDIAN   DL_CRCP_INPUT_ENDIANESS_BIG_ENDIAN
	Redirects to DL_CRCP_INPUT_ENDIANESS_BIG_ENDIAN for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_OUTPUT_BYTESWAP_ENABLED   DL_CRCP_OUTPUT_BYTESWAP_ENABLED
	Redirects to DL_CRCP_OUTPUT_BYTESWAP_ENABLED for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_OUTPUT_BYTESWAP_DISABLED   DL_CRCP_OUTPUT_BYTESWAP_DISABLED
	Redirects to DL_CRCP_OUTPUT_BYTESWAP_DISABLED for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_32_MPEG2   DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_32_MPEG2   DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_32_Q   DL_CRCP_CRCPOLY_POLYNOMIAL_32_Q
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_32_Q for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_32_JAMCRC   DL_CRCP_CRCPOLY_POLYNOMIAL_32_JAMCRC
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_32_JAMCRC for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_32_XFER   DL_CRCP_CRCPOLY_POLYNOMIAL_32_XFER
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_32_XFER for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_CCIT_ZERO   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_ZERO
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_ZERO for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_ARC   DL_CRCP_CRCPOLY_POLYNOMIAL_16_ARC
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_ARC for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_AUG_CCIT   DL_CRCP_CRCPOLY_POLYNOMIAL_16_AUG_CCIT
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_AUG_CCIT for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_BUYPASS   DL_CRCP_CRCPOLY_POLYNOMIAL_16_BUYPASS
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_BUYPASS for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_CCIT_FALSE   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_FALSE
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_FALSE for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_CDMA2000   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CDMA2000
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_CDMA2000 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCPOLY_POLYNOMIAL_16_MODBUS   DL_CRCP_CRCPOLY_POLYNOMIAL_16_MODBUS
	Redirects to DL_CRCP_CRCPOLY_POLYNOMIAL_16_MODBUS for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_32_MPEG2   DL_CRCP_CRCSEED_SEED_32_MPEG2
	Redirects to DL_CRCP_CRCSEED_SEED_32_MPEG2 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_32_MPEG2   DL_CRCP_CRCSEED_SEED_32_MPEG2
	Redirects to DL_CRCP_CRCSEED_SEED_32_MPEG2 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_32_Q   DL_CRCP_CRCSEED_SEED_32_Q
	Redirects to DL_CRCP_CRCSEED_SEED_32_Q for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_32_JAMCRC   DL_CRCP_CRCSEED_SEED_32_JAMCRC
	Redirects to DL_CRCP_CRCSEED_SEED_32_JAMCRC for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_32_XFER   DL_CRCP_CRCSEED_SEED_32_XFER
	Redirects to DL_CRCP_CRCSEED_SEED_32_XFER for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_16_AUG_CCIT   DL_CRCP_CRCSEED_SEED_16_AUG_CCIT
	Redirects to DL_CRCP_CRCSEED_SEED_16_AUG_CCIT for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_16_BUYPASS   DL_CRCP_CRCSEED_SEED_16_BUYPASS
	Redirects to DL_CRCP_CRCSEED_SEED_16_BUYPASS for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_16_CCIT_FALSE   DL_CRCP_CRCSEED_SEED_16_CCIT_FALSE
	Redirects to DL_CRCP_CRCSEED_SEED_16_CCIT_FALSE for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_16_CDMA2000   DL_CRCP_CRCSEED_SEED_16_CDMA2000
	Redirects to DL_CRCP_CRCSEED_SEED_16_CDMA2000 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_CRCSEED_SEED_16_MODBUS   DL_CRCP_CRCSEED_SEED_16_MODBUS
	Redirects to DL_CRCP_CRCSEED_SEED_16_MODBUS for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_enablePower   DL_CRCP_enablePower
	Redirects to DL_CRCP_enablePower for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_isPowerEnabled   DL_CRCP_isPowerEnabled
	Redirects to DL_CRCP_isPowerEnabled for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_reset   DL_CRCP_reset
	Redirects to DL_CRCP_reset for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_isReset   DL_CRCP_isReset
	Redirects to DL_CRCP_isReset for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_init   DL_CRCP_init
	Redirects to DL_CRCP_init for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_setSeed16   DL_CRCP_setSeed16
	Redirects to DL_CRCP_setSeed16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_setSeed32   DL_CRCP_setSeed32
	Redirects to DL_CRCP_setSeed32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_feedData8   DL_CRCP_feedData8
	Redirects to DL_CRCP_feedData8 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_feedData16   DL_CRCP_feedData16
	Redirects to DL_CRCP_feedData16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_feedData32   DL_CRCP_feedData32
	Redirects to DL_CRCP_feedData32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_getResult16   DL_CRCP_getResult16
	Redirects to DL_CRCP_getResult16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_getResult32   DL_CRCP_getResult32
	Redirects to DL_CRCP_getResult32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_setPolynomial   DL_CRCP_setPolynomial
	Redirects to DL_CRCP_setPolynomial for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_getPolynomial   DL_CRCP_getPolynomial
	Redirects to DL_CRCP_getPolynomial for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_calculateBlock32   DL_CRCP_calculateBlock32
	Redirects to DL_CRCP_calculateBlock32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_calculateMemoryRange32   DL_CRCP_calculateMemoryRange32
	Redirects to DL_CRCP_calculateMemoryRange32 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_calculateBlock16   DL_CRCP_calculateBlock16
	Redirects to DL_CRCP_calculateBlock16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_calculateMemoryRange16   DL_CRCP_calculateMemoryRange16
	Redirects to DL_CRCP_calculateMemoryRange16 for compatibility between CRC and CRCP DriverLib modules.
#define	DL_CRC_getCRCINAddr   DL_CRCP_getCRCINAddr
	Redirects to DL_CRCP_getCRCINAddr for compatibility between CRC and CRCP DriverLib modules.

Enumerations
enum	DL_CRCP_POLYNOMIAL_SIZE {   DL_CRCP_POLYNOMIAL_SIZE_16 = CRCP_CRCCTRL_POLYSIZE_CRC16,   DL_CRCP_POLYNOMIAL_SIZE_32 = CRCP_CRCCTRL_POLYSIZE_CRC32 }
enum	DL_CRCP_BIT {   DL_CRCP_BIT_REVERSED = CRCP_CRCCTRL_BITREVERSE_REVERSED,   DL_CRCP_BIT_NOT_REVERSED = CRCP_CRCCTRL_BITREVERSE_NOT_REVERSED }
enum	DL_CRCP_INPUT_ENDIANESS {   DL_CRCP_INPUT_ENDIANESS_LITTLE_ENDIAN,   DL_CRCP_INPUT_ENDIANESS_BIG_ENDIAN }
enum	DL_CRCP_OUTPUT_BYTESWAP {   DL_CRCP_OUTPUT_BYTESWAP_ENABLED = CRCP_CRCCTRL_OUTPUT_BYTESWAP_ENABLE,   DL_CRCP_OUTPUT_BYTESWAP_DISABLED = CRCP_CRCCTRL_OUTPUT_BYTESWAP_DISABLE }
enum	DL_CRCP_CRCPOLY_POLYNOMIAL {   DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2 = 0x04C11DB7,   DL_CRCP_CRCPOLY_POLYNOMIAL_32_Q = 0x814141AB,   DL_CRCP_CRCPOLY_POLYNOMIAL_32_JAMCRC = 0x04C11DB7,   DL_CRCP_CRCPOLY_POLYNOMIAL_32_XFER = 0x000000AF,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_ZERO = 0x00001021,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_ARC = 0x00001DCF,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_AUG_CCIT = 0x00001021,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_BUYPASS = 0x00008005,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_FALSE = 0x00001021,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_CDMA2000 = 0x0000C867,   DL_CRCP_CRCPOLY_POLYNOMIAL_16_MODBUS = 0x00008005 }
	commonly used pre-defined polynomials to be used by CRCP as mentioned by the website http://www.sunshine2k.de/coding/javascript/crc/crc_js.html. Custom polynomials can also be used in lieu of the follwoing. More...
enum	DL_CRCP_CRCSEED_SEED {   DL_CRCP_CRCSEED_SEED_32_MPEG2 = 0xFFFFFFFF,   DL_CRCP_CRCSEED_SEED_32_Q = 0x00000000,   DL_CRCP_CRCSEED_SEED_32_JAMCRC = 0xFFFFFFFF,   DL_CRCP_CRCSEED_SEED_32_XFER = 0x00000000,   DL_CRCP_CRCSEED_SEED_16_CCIT_ZERO = 0x0000,   DL_CRCP_CRCSEED_SEED_16_ARC = 0x0000,   DL_CRCP_CRCSEED_SEED_16_AUG_CCIT = 0x1D0F,   DL_CRCP_CRCSEED_SEED_16_BUYPASS = 0x0000,   DL_CRCP_CRCSEED_SEED_16_CCIT_FALSE = 0xFFFF,   DL_CRCP_CRCSEED_SEED_16_CDMA2000 = 0xFFFF,   DL_CRCP_CRCSEED_SEED_16_MODBUS = 0xFFFF }
	seeds for commonly used pre-defined polynomials to be used by CRCP as mentioned by the website http://www.sunshine2k.de/coding/javascript/crc/crc_js.html. Custom polynomials can also be used in lieu of the follwoing. More...

Functions
__STATIC_INLINE void	DL_CRCP_enablePower (CRCP_Regs *crcp)
	Enables the Peripheral Write Enable (PWREN) register for the CRCP. More...
__STATIC_INLINE void	DL_CRCP_disablePower (CRCP_Regs *crcp)
	Disables the Peripheral Write Enable (PWREN) register for the CRCP. More...
__STATIC_INLINE bool	DL_CRCP_isPowerEnabled (const CRCP_Regs *crcp)
	Returns if the Peripheral Write Enable (PWREN) register for the CRCP is enabled. More...
__STATIC_INLINE void	DL_CRCP_reset (CRCP_Regs *crcp)
	Resets CRCP peripheral. More...
__STATIC_INLINE bool	DL_CRCP_isReset (const CRCP_Regs *crcp)
	Returns if CRCP module has been reset. More...
__STATIC_INLINE void	DL_CRCP_init (CRCP_Regs *crcp, DL_CRCP_POLYNOMIAL_SIZE polySize, DL_CRCP_BIT bitOrd, DL_CRCP_INPUT_ENDIANESS inEndianness, DL_CRCP_OUTPUT_BYTESWAP outByteSwap)
	Initializes the CRCP peripheral. More...
__STATIC_INLINE void	DL_CRCP_setSeed16 (CRCP_Regs *crcp, uint16_t seed)
	Initializes the seed for a 16-bit polynomial CRC calculation. More...
__STATIC_INLINE void	DL_CRCP_setSeed32 (CRCP_Regs *crcp, uint32_t seed)
	Initializes the seed for a 32-bit polynomial CRC calculation. More...
__STATIC_INLINE void	DL_CRCP_feedData8 (CRCP_Regs *crcp, uint8_t dataIn)
	Feeds 8-bit data into the CRC calculation. More...
__STATIC_INLINE void	DL_CRCP_feedData16 (CRCP_Regs *crcp, uint16_t dataIn)
	Feeds 16-bit data into the CRC calculation. More...
__STATIC_INLINE void	DL_CRCP_feedData32 (CRCP_Regs *crcp, uint32_t dataIn)
	Feeds 32-bit data into the CRC calculation. More...
__STATIC_INLINE uint16_t	DL_CRCP_getResult16 (const CRCP_Regs *crcp)
	Returns the result from the 16-bit polynomial calculation. More...
__STATIC_INLINE uint32_t	DL_CRCP_getResult32 (const CRCP_Regs *crcp)
	Returns the result from the 32-bit polynomial calculation. More...
__STATIC_INLINE void	DL_CRCP_setPolynomial (CRCP_Regs *crcp, uint32_t poly)
	Sets the active polynomial terms for the CRC calculation. More...
__STATIC_INLINE uint32_t	DL_CRCP_getPolynomial (const CRCP_Regs *crcp)
	Gets the active polynomial terms for the CRC calculation. More...
uint32_t	DL_CRCP_calculateBlock32 (CRCP_Regs *crcp, uint32_t seed, const uint32_t *ptr, uint32_t size)
	Calculates the CRC over a range of 32-bit values. More...
uint32_t	DL_CRCP_calculateMemoryRange32 (CRCP_Regs *crcp, uint32_t seed, uint32_t *ptrStart, const uint32_t *ptrEnd)
	Calculates the CRC over a memory range. More...
uint16_t	DL_CRCP_calculateBlock16 (CRCP_Regs *crcp, uint16_t seed, const uint16_t *ptr, uint16_t size)
	Calculates the CRC over a range of 16-bit values. More...
uint16_t	DL_CRCP_calculateMemoryRange16 (CRCP_Regs *crcp, uint16_t seed, uint16_t *ptrStart, const uint16_t *ptrEnd)
	Calculates the CRC over a memory range. More...
__STATIC_INLINE uintptr_t	DL_CRCP_getCRCINAddr (const CRCP_Regs *crcp)
	Returns the address of the CRC input data register. More...

Detailed Description

Overview

The CRCP DriverLib allows full configuration of the MSPM0 CRCP module. The cyclic redundancy check (CRC) accelerator generates signatures for a given data sequence based on a user-configured polynomial, allowing for support of any 16-bit or 32-bit polynomial including but not limited to:

• CRC32-IS03309
• CRC16-ITT
• CRC-32C
• CRC-32K
• CRC-16-Profibus

---

Enumeration Type Documentation

DL_CRCP_POLYNOMIAL_SIZE

enum DL_CRCP_POLYNOMIAL_SIZE

Enumerator
DL_CRCP_POLYNOMIAL_SIZE_16	Use lower 16-bit value of CRCPOLY as polynomial for calculation. Upon reset, user will need to update polynomial value for 16-bits, such as the CRC-16-CCITT standard of 0x1021.
DL_CRCP_POLYNOMIAL_SIZE_32	Use 32-bit polynomial value of CRCPOLY as polynomial for calculation. Defaults to the CRC32-ISO3309 standard value of 0x04C11DB7.

DL_CRCP_BIT

enum DL_CRCP_BIT

Enumerator
DL_CRCP_BIT_REVERSED	CRCP Bit Input and output bit orders are reversed
DL_CRCP_BIT_NOT_REVERSED	CRCP Bit Input and output are not reversed

DL_CRCP_INPUT_ENDIANESS

enum DL_CRCP_INPUT_ENDIANESS

Enumerator
DL_CRCP_INPUT_ENDIANESS_LITTLE_ENDIAN	CRCP Input is proccessed in little endian. LSB is lowest memory address and first to be processed.
DL_CRCP_INPUT_ENDIANESS_BIG_ENDIAN	CRCP Input is proccessed in big endian. LSB is highest memory address and last to be processed.

DL_CRCP_OUTPUT_BYTESWAP

enum DL_CRCP_OUTPUT_BYTESWAP

Enumerator
DL_CRCP_OUTPUT_BYTESWAP_ENABLED	CRCP output byteswap is enabled
DL_CRCP_OUTPUT_BYTESWAP_DISABLED	CRCP output byteswap is disabled

DL_CRCP_CRCPOLY_POLYNOMIAL

enum DL_CRCP_CRCPOLY_POLYNOMIAL

commonly used pre-defined polynomials to be used by CRCP as mentioned by the website http://www.sunshine2k.de/coding/javascript/crc/crc_js.html. Custom polynomials can also be used in lieu of the follwoing.

Enumerator
DL_CRCP_CRCPOLY_POLYNOMIAL_32_MPEG2	CRCP commonly used polynomial CRC32_MPEG2. To match online output, seed value must be set to 0xFFFFFFFF
DL_CRCP_CRCPOLY_POLYNOMIAL_32_Q	CRCP commonly used polynomial CRC32_Q. To match online output, seed value must be set to 0x00000000
DL_CRCP_CRCPOLY_POLYNOMIAL_32_JAMCRC	CRCP commonly used polynomial CRC32_JAMCRC. To match online output, seed value must be set to 0xFFFFFFFF and bit order reversed
DL_CRCP_CRCPOLY_POLYNOMIAL_32_XFER	CRCP commonly used polynomial CRC32_XFER. To match online output, seed value must be set to 0x00000000
DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_ZERO	CRCP commonly used polynomial CRC16_CCIT_ZERO. To match online output, seed value must be set to 0x0000
DL_CRCP_CRCPOLY_POLYNOMIAL_16_ARC	CRCP commonly used polynomial CRC16_ARC. To match online output, seed value must be set to 0x0000 and bit order reversed
DL_CRCP_CRCPOLY_POLYNOMIAL_16_AUG_CCIT	CRCP commonly used polynomial CRC16_AUG_CCIT. To match online output, seed value must be set to 0x1D0F
DL_CRCP_CRCPOLY_POLYNOMIAL_16_BUYPASS	CRCP commonly used polynomial CRC16_BUYPASS. To match online output, seed value must be set to 0x0000
DL_CRCP_CRCPOLY_POLYNOMIAL_16_CCIT_FALSE	CRCP commonly used polynomial CRC16_CCIT_FALSE. To match online output, seed value must be set to 0xFFFF
DL_CRCP_CRCPOLY_POLYNOMIAL_16_CDMA2000	CRCP commonly used polynomial CRC16_CDMA2000. To match online output, seed value must be set to 0xFFFF
DL_CRCP_CRCPOLY_POLYNOMIAL_16_MODBUS	CRCP commonly used polynomial CRC16_MODBUS. To match online output, seed value must be set to 0xFFFF and bit order reversed

DL_CRCP_CRCSEED_SEED

enum DL_CRCP_CRCSEED_SEED

seeds for commonly used pre-defined polynomials to be used by CRCP as mentioned by the website http://www.sunshine2k.de/coding/javascript/crc/crc_js.html. Custom polynomials can also be used in lieu of the follwoing.

Enumerator
DL_CRCP_CRCSEED_SEED_32_MPEG2	CRCP commonly used polynomial CRC32_MPEG2. To match online output, polynomial must be set to 0x04C11DB7
DL_CRCP_CRCSEED_SEED_32_Q	CRCP commonly used polynomial CRC32_Q. To match online output, polynomial must be set to 0x814141AB
DL_CRCP_CRCSEED_SEED_32_JAMCRC	CRCP commonly used polynomial CRC32_JAMCRC. To match online output, polynomial must be set to 0x04C11DB7 and bit order reversed
DL_CRCP_CRCSEED_SEED_32_XFER	CRCP commonly used polynomial CRC32_XFER. To match online output, polynomial must be set to 0x000000AF
DL_CRCP_CRCSEED_SEED_16_CCIT_ZERO	CRCP commonly used polynomial CRC16_CCIT_ZERO. To match online output, polynomial must be set to 0x00001021
DL_CRCP_CRCSEED_SEED_16_ARC	CRCP commonly used polynomial CRC16_ARC. To match online output, polynomial must be set to 0x00001DCF and bit order reversed
DL_CRCP_CRCSEED_SEED_16_AUG_CCIT	CRCP commonly used polynomial CRC16_AUG_CCIT. To match online output, polynomial must be set to 0x00001021
DL_CRCP_CRCSEED_SEED_16_BUYPASS	CRCP commonly used polynomial CRC16_BUYPASS. To match online output, polynomial must be set to 0x00008005
DL_CRCP_CRCSEED_SEED_16_CCIT_FALSE	CRCP commonly used polynomial CRC16_CCIT_FALSE. To match online output, polynomial must be set to 0x00001021
DL_CRCP_CRCSEED_SEED_16_CDMA2000	CRCP commonly used polynomial CRC16_CDMA2000. To match online output, polynomial must be set to 0x0000C867
DL_CRCP_CRCSEED_SEED_16_MODBUS	CRCP commonly used polynomial CRC16_MODBUS. To match online output, polynomial must be set to 0x00008005 and bit order reversed

Function Documentation

DL_CRCP_enablePower()

__STATIC_INLINE void DL_CRCP_enablePower

(

CRCP_Regs *

crcp

)

Enables the Peripheral Write Enable (PWREN) register for the CRCP.

Before any peripheral registers can be configured by software, the peripheral itself must be enabled by writing the ENABLE bit together with the appropriate KEY value to the peripheral's PWREN register.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral

DL_CRCP_disablePower()

__STATIC_INLINE void DL_CRCP_disablePower

(

CRCP_Regs *

crcp

)

Disables the Peripheral Write Enable (PWREN) register for the CRCP.

When the PWREN.ENABLE bit is cleared, the peripheral's registers are not accessible for read/write operations.

Note

This API does not provide large power savings.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral

DL_CRCP_isPowerEnabled()

__STATIC_INLINE bool DL_CRCP_isPowerEnabled

(

const CRCP_Regs *

crcp

)

Returns if the Peripheral Write Enable (PWREN) register for the CRCP is enabled.

Before any peripheral registers can be configured by software, the peripheral itself must be enabled by writing the ENABLE bit together with the appropriate KEY value to the peripheral's PWREN register.

When the PWREN.ENABLE bit is cleared, the peripheral's registers are not accessible for read/write operations.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral

Returns

true if peripheral register access is enabled

false if peripheral register access is disabled

DL_CRCP_reset()

__STATIC_INLINE void DL_CRCP_reset

(

CRCP_Regs *

crcp

)

Resets CRCP peripheral.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral

DL_CRCP_isReset()

__STATIC_INLINE bool DL_CRCP_isReset

(

const CRCP_Regs *

crcp

)

Returns if CRCP module has been reset.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral

Returns

true if peripheral was reset

false if peripheral wasn't reset

DL_CRCP_init()

__STATIC_INLINE void DL_CRCP_init	(	CRCP_Regs *	crcp,
		DL_CRCP_POLYNOMIAL_SIZE	polySize,
		DL_CRCP_BIT	bitOrd,
		DL_CRCP_INPUT_ENDIANESS	inEndianness,
		DL_CRCP_OUTPUT_BYTESWAP	outByteSwap
	)

Initializes the CRCP peripheral.

Parameters

crcp	Pointer to the register overlay for the CRCP peripheral.
polySize	Selects CRC polynomial size. One of DL_CRCP_POLYNOMIAL_SIZE.
bitOrd	Selects CRC bit order. One of DL_CRCP_BIT.
inEndianness	Selects CRC input endianess. One of DL_CRCP_INPUT_ENDIANESS.
outByteSwap	Selects CRC output byte swap mode. One of DL_CRCP_OUTPUT_BYTESWAP.

DL_CRCP_setSeed16()

__STATIC_INLINE void DL_CRCP_setSeed16	(	CRCP_Regs *	crcp,
		uint16_t	seed
	)

Initializes the seed for a 16-bit polynomial CRC calculation.

Note

CRC seed is swapped when CRCP module is configured in big-endian mode. For example when calling DL_CRCP_setSeed32(CRC, 0xaabb). The CRCP module will be initialized with 0xbbaa. Therefore, the seed value should be appropriately specified taking endianness into account. Please refer to the device TRM for additional detail.

Sets the inital seed for a 16-bit CRC calculation. can be any value, or cast one of the common seeds in DL_CRCP_CRCSEED_SEED.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	seed	The seed from which to start generating a signature

DL_CRCP_setSeed32()

__STATIC_INLINE void DL_CRCP_setSeed32	(	CRCP_Regs *	crcp,
		uint32_t	seed
	)

Initializes the seed for a 32-bit polynomial CRC calculation.

Note

CRC seed is swapped when CRCP module is configured in big-endian mode. For example when calling DL_CRCP_setSeed32(CRC, 0xaabbccdd). The CRCP module will be initialized with 0xddccbbaa. Therefore, the seed value should be appropriately specified taking endianness into account. Please refer to the device TRM for additional detail.

Sets the inital seed for a 32-bit CRC calculation. can be any value, or cast one of the common seeds in DL_CRCP_CRCSEED_SEED.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	seed	The seed from which to start generating a signature

DL_CRCP_feedData8()

__STATIC_INLINE void DL_CRCP_feedData8	(	CRCP_Regs *	crcp,
		uint8_t	dataIn
	)

Feeds 8-bit data into the CRC calculation.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	dataIn	8-bit data value to add to the signature

DL_CRCP_feedData16()

__STATIC_INLINE void DL_CRCP_feedData16	(	CRCP_Regs *	crcp,
		uint16_t	dataIn
	)

Feeds 16-bit data into the CRC calculation.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	dataIn	16-bit data value to add to the signature

DL_CRCP_feedData32()

__STATIC_INLINE void DL_CRCP_feedData32	(	CRCP_Regs *	crcp,
		uint32_t	dataIn
	)

Feeds 32-bit data into the CRC calculation.

Feeds a 32-bit value into the CRC calculation. 32-bit data can only be used with the 32-bit polynomial.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	dataIn	32 bit data value to add to the signature

DL_CRCP_getResult16()

__STATIC_INLINE uint16_t DL_CRCP_getResult16

(

const CRCP_Regs *

crcp

)

Returns the result from the 16-bit polynomial calculation.

Note

CRC Output will be swapped if the CRCP module is configured in byte-swap mode. For example, if enabled and CRCOUT register has the value 0xaabbccdd, DL_CRCP_getResult16 would return 0xddcc. Please refer to the TRM for more information.

Parameters

[in]

crcp

Pointer to the register overlay for the CRCP peripheral

Returns

The calculation result for the 16-bit polynomial

DL_CRCP_getResult32()

__STATIC_INLINE uint32_t DL_CRCP_getResult32

(

const CRCP_Regs *

crcp

)

Returns the result from the 32-bit polynomial calculation.

Note

CRC Output will be swapped if the CRCP module is configured in byte-swap mode. For example, if enabled and CRCOUT register has value 0xaabbccdd, DL_CRCP_getResult32 would return 0xddccbbaa in the 32-bit case, and 0x0000ddcc. In the 16-bit case. Additionally, if byte-swap is disabled, the 16-bit size would return 0x0000ccdd. Please refer to the TRM for more information.

Parameters

[in]

crcp

Pointer to the register overlay for the CRCP peripheral

Returns

The calculation result for the 32-bit polynomial

DL_CRCP_setPolynomial()

__STATIC_INLINE void DL_CRCP_setPolynomial	(	CRCP_Regs *	crcp,
		uint32_t	poly
	)

Sets the active polynomial terms for the CRC calculation.

The polynomial can be any value represented with MSB first. Thus, in a 16-bit polynomial (where the 16th power is always present), the nth bit corresponds to the inclusion of the nth term of the polynomial. For example, The 16-bit polynomial CCIT x^16 + x^12 + x^5 + 1 is represented as 0x1021. One can craft a custom polynomial, use an existing polynomial, or cast one of the common polynomials in DL_CRCP_CRCPOLY_POLYNOMIAL. If the polynomial size is configured as 16-bit, the upper 16-bits are ignored.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	poly	Polynomial to implement (normal representation)

DL_CRCP_getPolynomial()

__STATIC_INLINE uint32_t DL_CRCP_getPolynomial

(

const CRCP_Regs *

crcp

)

Gets the active polynomial terms for the CRC calculation.

The polynomial can be any value represented as with MSB first. Thus, in a 16-bit polynomial (where the 16th power is always present), the nth bit corresponds to the inclusion of the nth term of the polynomial. For example, The 16-bit polynomial CCIT x^16 + x^12 + x^5 + 1 is represented as 0x1021. If the polynomial size is configured as 16-bit, the upper 16-bits are ignored.

Parameters

[in]

crcp

Pointer to the register overlay for the CRCP peripheral

Returns

Active polynomial (normal representation)

References DL_CRCP_calculateBlock16(), DL_CRCP_calculateBlock32(), DL_CRCP_calculateMemoryRange16(), and DL_CRCP_calculateMemoryRange32().

DL_CRCP_calculateBlock32()

uint32_t DL_CRCP_calculateBlock32	(	CRCP_Regs *	crcp,
		uint32_t	seed,
		const uint32_t *	ptr,
		uint32_t	size
	)

Calculates the CRC over a range of 32-bit values.

Uses the 32-bit polynomial to calculate the checksum over a block of values.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	seed	The seed for the CRC to start generating a signature from
[in]	ptr	A pointer to the block of code to calculate the CRC over
[in]	size	The size of the block of uint32_t data

Returns

The calculated CRC signature value

Referenced by DL_CRCP_getPolynomial().

DL_CRCP_calculateMemoryRange32()

uint32_t DL_CRCP_calculateMemoryRange32	(	CRCP_Regs *	crcp,
		uint32_t	seed,
		uint32_t *	ptrStart,
		const uint32_t *	ptrEnd
	)

Calculates the CRC over a memory range.

Calculates the checksum using the 32-bit polynomial over any memory range.

Parameters

[in]	crcp	Pointer to the register overlay for the CRC peripheral
[in]	seed	The seed used to start generating a signature from
[in]	ptrStart	A uint32_t pointer to the start of a block of code to calculate the CRC over
[in]	ptrEnd	A uint32_t pointer to the end of a block of code to calculate the CRC over

Returns

The calculated CRC signature value

Referenced by DL_CRCP_getPolynomial().

DL_CRCP_calculateBlock16()

uint16_t DL_CRCP_calculateBlock16	(	CRCP_Regs *	crcp,
		uint16_t	seed,
		const uint16_t *	ptr,
		uint16_t	size
	)

Calculates the CRC over a range of 16-bit values.

Uses the 16-bit polynomial to calculate the checksum over a block of values.

Parameters

[in]	crcp	Pointer to the register overlay for the CRCP peripheral
[in]	seed	The seed for the CRCP to start generating a signature from
[in]	ptr	A pointer to the block of code to calculate the CRC over
[in]	size	The size of the block of 16-bit data

Returns

The calculated CRC signature value

Referenced by DL_CRCP_getPolynomial().

DL_CRCP_calculateMemoryRange16()

uint16_t DL_CRCP_calculateMemoryRange16	(	CRCP_Regs *	crcp,
		uint16_t	seed,
		uint16_t *	ptrStart,
		const uint16_t *	ptrEnd
	)

Calculates the CRC over a memory range.

Calculates the checksum using the 16-bit polynomial over any memory range.

Parameters

[in]	crcp	Pointer to the register overlay for the CRC peripheral
[in]	seed	The seed used to start generating a signature from
[in]	ptrStart	A uint16_t pointer to the start of a block of code to calculate the CRC over
[in]	ptrEnd	A uint16_t pointer to the end of a block of code to calculate the CRC over

Returns

The calculated CRC signature value

Referenced by DL_CRCP_getPolynomial().

DL_CRCP_getCRCINAddr()

__STATIC_INLINE uintptr_t DL_CRCP_getCRCINAddr

(

const CRCP_Regs *

crcp

)

Returns the address of the CRC input data register.

This API can be used with DL_DMA_setDestAddr to set the destination address when using DMA transfers

Parameters

[in]

crcp

Pointer to the register overlay for the CRC peripheral

Returns

Address of the CRC input data register