/**
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******************************************************************************
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* @file xl_crc.c
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* @author xu.wang
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* @version 4.5.2
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* @date Fri Mar 26 17:29:12 2021
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* @brief This file provide function about CRC firmware program
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******************************************************************************
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* @attention
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*
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* 2019 by Chipways Communications,Inc. All Rights Reserved.
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* This software is supplied under the terms of a license
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* agreement or non-disclosure agreement with Chipways.
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* Passing on and copying of this document,and communication
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* of its contents is not permitted without prior written
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* authorization.
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*
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* <h2><center>© COPYRIGHT 2019 Chipways</center></h2>
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******************************************************************************
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*/
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#if defined(__cplusplus)
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extern "C" {
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#endif /* __cplusplus */
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/* Includes ---------------------------------------------------------------*/
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#include "xl_crc.h"
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/** @addtogroup XL6600_StdPeriph_Driver
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* @{
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*/
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/** @defgroup CRC CRC Module
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* @brief CRC Driver Modules Library
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup CRC_Private_Functions
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* @{
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*/
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/**
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* @brief CRC»Ö¸´³õʼ״̬
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* @return ·µ»ØÖ´ÐÐ״̬.
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*/
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void CRC_Deinit(void)
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{
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/* De-initialize the PMC module return to the default state. */
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CRC->CTRL = 0x00000000u;
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CRC->GPOLY = 0x00000000u;
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CRC->INIT = 0xFFFFFFFFu;
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}
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/**
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* @brief CRC³õʼ»¯
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* @param CRC_InitStruct: CRC³õʼ»¯ÅäÖýṹÌå
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* @retval None
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*/
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void CRC_Init(const CRC_InitTypeDef *CRC_InitStruct)
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{
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uint32_t tmpreg;
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/* configure the register. */
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/* Get the CTRL Register. */
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tmpreg = CRC->CTRL;
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/* clear the CTRL bit*/
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tmpreg &= ~(CRC_CTRL_TOT_MASK | CRC_CTRL_TCRC_MASK | CRC_CTRL_T16_MASK | CRC_CTRL_INV_MASK);
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/* set CRC control register */
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tmpreg |= ((((uint32_t)CRC_InitStruct->CRC_WriteTranspose << CRC_CTRL_TOT_SHIFT) & CRC_CTRL_TOT_MASK) |\
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(((uint32_t)CRC_InitStruct->CRC_DataWidth << CRC_CTRL_TCRC_SHIFT) & CRC_CTRL_TCRC_MASK)|\
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(((uint32_t)CRC_InitStruct->CRC_Transpose16Only << CRC_CTRL_T16_SHIFT) & CRC_CTRL_T16_MASK) |\
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(((uint32_t)CRC_InitStruct->CRC_DataOutInvert << CRC_CTRL_INV_SHIFT) & CRC_CTRL_INV_MASK));
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/* Write to CRC CTRL */
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CRC->CTRL = tmpreg ;
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if(CRC_InitStruct->CRC_DataWidth == CRC_Width32Bits)
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{
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/* set 32-bit CRC Polynomial register */
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CRC->GPOLY = (uint32_t)(CRC_InitStruct->CRC_PolyData);
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}
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else
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{
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/* set 16-bit CRC Polynomial register */
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CRC->GPOLY=(uint16_t)(CRC_InitStruct->CRC_PolyData);
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}
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}
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/**
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* @brief CRC 16λģ¼ÆËã.
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* @param InitValue: ³õʼֵ
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* @param *msg: ¼ÆËãµÄÊý¾Ý
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* @param SizeBytes: ¼ÆËãµÄ³¤¶È
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* @return ·µ»ØCRC16λÊý¾Ý¼ÆËã½á¹û.
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*/
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uint16_t CRC_Cal16(uint32_t InitValue, const uint8_t *msg, uint32_t SizeBytes)
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{
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uint16_t data_out;
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uint32_t i;
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/* init value set */
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CRC->INIT = InitValue;
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CRC->CTRL |= CRC_CTRL_INIT_MASK;
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/* Wait for calculation completion */
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for(i=0; i<SizeBytes; i++)
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{
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CRC->DATAIN = msg[i];
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CRC->CTRL |= CRC_CTRL_CALC_MASK;
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}
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if((CRC->CTRL & CRC_CTRL_T16_MASK) == CRC_CTRL_T16_MASK)
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{
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/* read DATAOUT low 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT);
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}
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else if((CRC->CTRL & 0x00000100u) != 0x00000100u)
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{
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/* read DATAOUT low 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT);
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}
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else
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{
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/* read DATAOUT high 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT >> 16u);
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}
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return(data_out);
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}
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/**
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* @brief CRC 16λģ¿ìËÙ¼ÆËã.
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* @param InitValue: ³õʼֵ
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* @param *msg: ¼ÆËãµÄÊý¾Ý
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* @param SizeBytes: ¼ÆËãµÄ³¤¶È
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* @return ·µ»ØCRC16λÊý¾Ý¼ÆËã½á¹û.
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*/
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uint16_t CRC_Cal16_Fast(uint32_t InitValue, const uint8_t *msg, uint32_t SizeBytes)
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{
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uint16_t data_out;
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uint32_t i;
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uint32_t temp;
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uint16_t integer4=0;
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uint16_t integer8=0;
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uint16_t integer16=0;
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uint16_t integer32=0;
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uint16_t integer4_1=0;
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uint16_t integer8_1=0;
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uint16_t integer16_1=0;
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uint16_t integer32_1=0;
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uint8_t remainder32=0;
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temp = CRC->CTRL;
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temp |= CRC_CTRL_INIT_MASK;
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/* init value set */
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CRC->INIT = InitValue;
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CRC->CTRL |= CRC_CTRL_INIT_MASK;
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integer32 = SizeBytes>>5;
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integer32_1 = integer32<<5;
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remainder32 = SizeBytes-integer32_1;
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integer16 = remainder32>>4;
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integer16_1 = integer16<<4;
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remainder32 = remainder32-integer16_1;
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integer8 = remainder32>>3;
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integer8_1 = integer8<<3;
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remainder32 = remainder32-integer8_1;
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integer4 = remainder32>>2;
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integer4_1 = integer4<<2;
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remainder32 = integer32_1 + integer16_1 + integer8_1 + integer4_1;
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temp = CRC->CTRL;
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temp |= CRC_CTRL_CALC_MASK;
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for(i=0;i<integer32;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer16;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer8;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer4;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=remainder32;i<SizeBytes;i++)
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{
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CRC->DATAIN = msg[i++];
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CRC->CTRL = temp;
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}
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if((CRC->CTRL & CRC_CTRL_T16_MASK) == CRC_CTRL_T16_MASK)
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{
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/* read DATAOUT low 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT);
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}
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else if((CRC->CTRL & 0x00000100u) != 0x00000100u)
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{
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/* read DATAOUT low 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT);
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}
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else
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{
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/* read DATAOUT high 16 bits */
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data_out=(uint16_t)(CRC->DATAOUT >> 16u);
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}
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return(data_out);
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}
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/**
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* @brief CRC 32λģ¼ÆËã.
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* @param InitValue: ³õʼֵ
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* @param *msg: ¼ÆËãµÄÊý¾Ý
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* @param SizeBytes: ¼ÆËãµÄ³¤¶È
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* @return ·µ»ØCRC32λÊý¾Ý¼ÆËã½á¹û.
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*/
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uint32_t CRC_Cal32(uint32_t InitValue, const uint8_t *msg, uint32_t SizeBytes)
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{
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uint32_t data_out;
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uint32_t i;
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/* init value set */
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CRC->INIT = InitValue;
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CRC->CTRL |= CRC_CTRL_INIT_MASK;
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/*Wait for calculation completion*/
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for(i=0; i<SizeBytes;i++)
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{
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CRC->DATAIN = msg[i];
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CRC->CTRL |= CRC_CTRL_CALC_MASK;
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}
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data_out=CRC->DATAOUT;
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return(data_out);
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}
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/**
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* @brief CRC 32λģ¿ìËÙ¼ÆËã.
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* @param InitValue: ³õʼֵ
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* @param *msg: ¼ÆËãµÄÊý¾Ý
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* @param SizeBytes: ¼ÆËãµÄ³¤¶È
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* @return ·µ»ØCRC32λÊý¾Ý¼ÆËã½á¹û.
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*/
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uint32_t CRC_Cal32Fast(uint32_t InitValue, const uint8_t *msg, uint32_t SizeBytes)
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{
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uint32_t data_out;
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uint32_t i;
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uint32_t temp;
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uint16_t integer4=0;
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uint16_t integer8=0;
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uint16_t integer16=0;
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uint16_t integer32=0;
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uint16_t integer4_1=0;
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uint16_t integer8_1=0;
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uint16_t integer16_1=0;
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uint16_t integer32_1=0;
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uint8_t remainder32=0;
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/* init value set */
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CRC->INIT = InitValue;
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CRC->CTRL |= CRC_CTRL_INIT_MASK;
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integer32 = SizeBytes>>5;
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integer32_1 = integer32<<5;
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remainder32 = SizeBytes-integer32_1;
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integer16 = remainder32>>4;
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integer16_1 = integer16<<4;
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remainder32 = remainder32-integer16_1;
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integer8 = remainder32>>3;
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integer8_1 = integer8<<3;
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remainder32 = remainder32-integer8_1;
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integer4 = remainder32>>2;
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integer4_1 = integer4<<2;
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remainder32 = integer32_1 + integer16_1 + integer8_1 + integer4_1;
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temp = CRC->CTRL;
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temp |= CRC_CTRL_CALC_MASK;
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for(i=0;i<integer32;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer16;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer8;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=0;i<integer4;)
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{
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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CRC->DATAIN = msg[i++]; CRC->CTRL = temp; CRC->DATAIN = msg[i++]; CRC->CTRL = temp;
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}
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for(i=remainder32;i<SizeBytes;i++)
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{
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CRC->DATAIN = msg[i++];
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CRC->CTRL = temp;
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}
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data_out=CRC->DATAOUT;
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return(data_out);
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/*******************************************************************************
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* EOF
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******************************************************************************/
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