168 lines
4.6 KiB
C
168 lines
4.6 KiB
C
/**
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* @file fc7xxx_driver_crc.c
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* @author Flagchip
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* @brief FC7xxx CRC driver source code
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* @version 0.1.0
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* @date 2024-01-12
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*
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* @copyright Copyright (c) 2024 Flagchip Semiconductors Co., Ltd.
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*
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*/
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/********************************************************************************
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* Revision History:
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*
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* Version Date Initials CR# Descriptions
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* --------- ---------- ------------ ---------- ---------------
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* 0.1.0 2024-01-12 Flagchip119 N/A First version for FC7240
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********************************************************************************/
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#include "fc7xxx_driver_crc.h"
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/********* Local Variables ************/
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static CRC_Type *const s_apCrcBase[CRC_INSTANCE_COUNT] = CRC_BASE_PTRS;
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/********* Local Functions ************/
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void CRC_Init(uint8_t u8Instance, const CRC_InitType *const pInitCfg)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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DEV_ASSERT(pInitCfg != NULL);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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if (pInitCfg->eBitWidth == CRC_BIT_8)
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{
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/* set CRC bit width(8-bit) */
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CRC_HWA_Set_8Bit_Width(pCrc, (CRC_BitWidthType)(pInitCfg->eBitWidth - 1));
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CRC_HWA_SetBitWidth(pCrc, (CRC_BitWidthType)0);
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}
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else
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{
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/* set CRC bit width(16-bit or 32-bit) */
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CRC_HWA_Set_8Bit_Width(pCrc, (CRC_BitWidthType)0);
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CRC_HWA_SetBitWidth(pCrc, pInitCfg->eBitWidth);
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}
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/* set CRC write/read swap and FXOR */
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CRC_HWA_SetWriteDataSwap(pCrc, pInitCfg->eWriteDataSwap);
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CRC_HWA_SetReadDataSwap(pCrc, pInitCfg->eReadDataSwap);
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CRC_HWA_SetReadDataFXOR(pCrc, pInitCfg->eReadDataFXOR);
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/* set CRC polynomial value */
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CRC_HWA_SetPolyVal(pCrc, pInitCfg->u32Polynomial);
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/* set CRC seed value */
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CRC_SetSeed(u8Instance, pInitCfg->u32SeedValue);
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}
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void CRC_DeInit(uint8_t u8Instance)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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/* set CRC bit width(32-bit) */
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CRC_HWA_SetBitWidth(pCrc, CRC_BIT_32);
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/* set CRC write/read swap and FXOR */
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CRC_HWA_SetWriteDataSwap(pCrc, WRITE_DATASWAP_NONE);
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CRC_HWA_SetReadDataSwap(pCrc, READ_DATASWAP_NONE);
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CRC_HWA_SetReadDataFXOR(pCrc, READ_DATA_NORMAL);
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/* set CRC polynomial value */
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CRC_HWA_SetPolyVal(pCrc, CRC_DEFAULT_POLY);
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/* set CRC seed value */
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CRC_SetSeed(u8Instance, CRC_DEFAULT_INTVAL);
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}
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uint32_t CRC_GetCrcResult(uint8_t u8Instance)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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CRC_ReadDataSwapType eTempVal;
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uint32_t u32Ret;
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eTempVal = CRC_HWA_GetReadDataSwap(pCrc);
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if (CRC_BIT_8 == CRC_HWA_Get8BitWidth(pCrc))
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{
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/* Returns upper 8 bits of CRC because of swap in 8 bits mode */
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if ((eTempVal == READ_DATASWAP_BIT_BYTE) || (eTempVal == READ_DATASWAP_BYTE))
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{
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u32Ret = CRC_HWA_GetData_U8_H(pCrc);
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}
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else
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{
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u32Ret = CRC_HWA_GetData_U8_L(pCrc);
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}
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return u32Ret;
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}
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else if (CRC_BIT_16 == CRC_HWA_GetBitWidth(pCrc))
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{
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/* Returns upper 16 bits of CRC because of swap in 16 bits mode */
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if ((eTempVal == READ_DATASWAP_BIT_BYTE) || (eTempVal == READ_DATASWAP_BYTE))
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{
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u32Ret = CRC_HWA_GetData_U16_H(pCrc);
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}
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else
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{
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u32Ret = CRC_HWA_GetData_U16_L(pCrc);
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}
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}
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else
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{
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u32Ret = CRC_HWA_GetData_U32(pCrc);
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}
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return u32Ret;
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}
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void CRC_SetCalcData_U8(uint8_t u8Instance, uint8_t u8Data)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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CRC_HWA_SetData_U8(pCrc, u8Data);
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}
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void CRC_SetCalcData_U16(uint8_t u8Instance, uint16_t u16Data)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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CRC_HWA_SetData_U16(pCrc, u16Data);
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}
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void CRC_SetCalcData_U32(uint8_t u8Instance, uint32_t u32Data)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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CRC_HWA_SetData_U32(pCrc, u32Data);
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}
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void CRC_SetSeed(uint8_t u8Instance, uint32_t u32SeedVal)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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CRC_Type *const pCrc = s_apCrcBase[u8Instance];
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CRC_HWA_SetDataOrSeed(pCrc, WRITE_COMMAND_SEED);
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CRC_HWA_SetData_U32(pCrc, u32SeedVal);
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CRC_HWA_SetDataOrSeed(pCrc, WRITE_COMMAND_DATA);
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}
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void CRC_SetInputData(uint8_t u8Instance, const uint8_t pData[], uint32_t u32DataSize)
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{
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DEV_ASSERT(u8Instance < CRC_INSTANCE_COUNT);
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uint32_t i;
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for (i = 0U; i < u32DataSize; i++)
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{
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CRC_SetCalcData_U8(u8Instance, pData[i]);
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}
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}
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