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//***************************************************************************** | |
// | |
// crc32.c - Driver for the crc32 Module. | |
// | |
//***************************************************************************** | |
//***************************************************************************** | |
// | |
//! \addtogroup crc32_api crc32 | |
//! @{ | |
// | |
//***************************************************************************** | |
#include "inc/hw_regaccess.h" | |
#include "inc/hw_memmap.h" | |
#ifdef __MSP430_HAS_CRC32__ | |
#include "crc32.h" | |
#include <assert.h> | |
void CRC32_setSeed(uint32_t seed, | |
uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC16INIRESW0) = seed; | |
} | |
else | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC32INIRESW1) = ((seed & 0xFFFF0000) | |
>> 16); | |
HWREG16(CRC32_BASE + OFS_CRC32INIRESW0) = (seed & 0xFFFF); | |
} | |
} | |
void CRC32_set8BitData(uint8_t dataIn, | |
uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
HWREG8(CRC32_BASE + OFS_CRC16DIW0_L) = dataIn; | |
} | |
else | |
{ | |
HWREG8(CRC32_BASE + OFS_CRC32DIW0_L) = dataIn; | |
} | |
} | |
void CRC32_set16BitData(uint16_t dataIn, | |
uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC16DIW0) = dataIn; | |
} | |
else | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC32DIW0) = dataIn; | |
} | |
} | |
void CRC32_set32BitData(uint32_t dataIn) | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC32DIW0) = dataIn & 0xFFFF; | |
HWREG16(CRC32_BASE + OFS_CRC32DIW1) = (uint16_t) ((dataIn & 0xFFFF0000) | |
>> 16); | |
} | |
void CRC32_set8BitDataReversed(uint8_t dataIn, | |
uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
HWREG8(CRC32_BASE + OFS_CRC16DIRBW1_L) = dataIn; | |
} | |
else | |
{ | |
HWREG8(CRC32_BASE + OFS_CRC32DIRBW1_L) = dataIn; | |
} | |
} | |
void CRC32_set16BitDataReversed(uint16_t dataIn, | |
uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC16DIRBW1) = dataIn; | |
} | |
else | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC32DIRBW1) = dataIn; | |
} | |
} | |
void CRC32_set32BitDataReversed(uint32_t dataIn) | |
{ | |
HWREG16(CRC32_BASE + OFS_CRC32DIRBW1) = dataIn & 0xFFFF; | |
HWREG16(CRC32_BASE + OFS_CRC32DIRBW0) = (uint16_t) ((dataIn & 0xFFFF0000) | |
>> 16); | |
} | |
uint32_t CRC32_getResult(uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
return (HWREG16(CRC32_BASE + OFS_CRC16INIRESW0)); | |
} | |
else | |
{ | |
uint32_t result = 0; | |
result = HWREG16(CRC32_BASE + OFS_CRC32INIRESW1); | |
result = (result << 16); | |
result |= HWREG16(CRC32_BASE + OFS_CRC32INIRESW0); | |
return (result); | |
} | |
} | |
uint32_t CRC32_getResultReversed(uint8_t crcMode) | |
{ | |
if(CRC16_MODE == crcMode) | |
{ | |
return (HWREG16(CRC32_BASE + OFS_CRC16RESRW0)); | |
} | |
else | |
{ | |
uint32_t result = 0; | |
result = HWREG16(CRC32_BASE + OFS_CRC32RESRW0); | |
result = (result << 16); | |
result |= HWREG16(CRC32_BASE + OFS_CRC32RESRW1); | |
return (result); | |
} | |
} | |
#endif | |
//***************************************************************************** | |
// | |
//! Close the doxygen group for crc32_api | |
//! @} | |
// | |
//***************************************************************************** |