/**
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******************************************************************************
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* @file fm33a0xxev_crc.c
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* @author FM33A0XXEV Application Team
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* @version V1.0.0
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* @date 16-April-2020
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* @brief This file provides firmware functions to manage the following
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* functionalities of....:
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*
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "fm33a0xxev_crc.h"
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/** @addtogroup fm33a0xxev_StdPeriph_Driver
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* @{
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*/
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/** @defgroup CRC
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* @brief CRC driver modules
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* @{
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*/
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/* CRCDRÓÃÓÚ×÷ΪÊý¾ÝÊäÈë¼Ä´æÆ÷£¬²¢ÇÒÔÚÔËËã½áÊøºó±£´æCRC¼ÆËã½á¹û¡£(CRC Data Register)
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×÷ΪÊäÈëʱ£ºÈôword²Ù×÷ʹÄÜ£¬Ôò¶ÔCRCDR[31:0]½øÐмÆË㣬¹²4´ÎbyteÔËË㣨Óɵ͵½¸ß£©£»·ñÔò¶ÔCRCDR[7:0]½øÐмÆË㣬¹²1´ÎbyteÔËËã¡£
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±£´æ½á¹ûʱ£ºÈôΪ7λ¶àÏîʽ½á¹û±£´æÔÚCRCDR[6:0]£¬ÈôΪ8λ¶àÏîʽ½á¹û±£´æÔÚCRCDR[7:0]£¬ÈôΪ16λ¶àÏîʽ½á¹û±£´æÔÚCRCDR[15:0]£¬ÈôΪ32λ¶àÏîʽ½á¹û±£´æÔÚCRCDR[31:0]¡£ Ïà¹Øº¯Êý */
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void CRC_DR_Write(uint32_t SetValue)
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{
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CRC->DR = (SetValue);
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}
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uint32_t CRC_DR_Read(void)
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{
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return (CRC->DR);
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}
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/* WORD²Ù×÷ʹÄÜ (Operation by Word)
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0£º×Ö½Ú²Ù×÷£¬CRC¼ÆËã½öÕë¶ÔCRCDR×îµÍ×Ö½Ú½øÐÐ
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1£º×Ö²Ù×÷£¬CRC¼ÆËãÕë¶ÔCRCDRÈ«²¿4×Ö½Ú½øÐÐ Ïà¹Øº¯Êý */
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void CRC_CR_OPWD_Set(uint32_t SetValue)
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{
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uint32_t tmpreg;
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tmpreg = CRC->CR;
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tmpreg &= ~(CRC_CR_OPWD_Msk);
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tmpreg |= (SetValue & CRC_CR_OPWD_Msk);
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CRC->CR = tmpreg;
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}
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uint32_t CRC_CR_OPWD_Get(void)
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{
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return (CRC->CR & CRC_CR_OPWD_Msk);
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}
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/* CRC¿ìËÙ¼ÆËãʹÄÜ (Parallel Calculation)
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0£º´®ÐÐÔËË㣬¼ÆËã1¸ö×Ö½ÚÐèÒª8¸öʱÖÓÖÜÆÚ
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1£º²¢ÐмÆË㣬¼ÆËã1¸ö×Ö½ÚÐèÒª1¸öʱÖÓÖÜÆÚ Ïà¹Øº¯Êý */
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void CRC_CR_PARA_Set(uint32_t SetValue)
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{
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uint32_t tmpreg;
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tmpreg = CRC->CR;
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tmpreg &= ~(CRC_CR_PARA_Msk);
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tmpreg |= (SetValue & CRC_CR_PARA_Msk);
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CRC->CR = tmpreg;
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}
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uint32_t CRC_CR_PARA_Get(void)
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{
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return (CRC->CR & CRC_CR_PARA_Msk);
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}
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/* CRCÊäÈ뷴ת¿ØÖÆ (Reflected Input)
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00£ºÊäÈë²»·´×ª
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01£ºÊäÈë°´×Ö½Ú·´×ª
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10£ºÊäÈë°´°ë×Ö·´×ª
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11£ºÊäÈë°´×Ö·´×ª
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ÀýÈ磺¼ÆËãÊý¾ÝΪ0x11223344£¬
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Èç¹ûRFLTIN==01£¬Ôò½«Êý¾Ý±äΪ0x8844CC22£¬ÔÙ½øÐмÆËã Èç¹ûRFLTIN==10£¬Ôò½«Êý¾Ý±äΪ0x448822CC£¬ÔÙ½øÐмÆËã
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Èç¹ûRFLTIN==11£¬Ôò½«Êý¾Ý±äΪ0x22CC4488£¬ÔÙ½øÐмÆËã Ïà¹Øº¯Êý */
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void CRC_CR_RFLTIN_Set(uint32_t SetValue)
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{
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uint32_t tmpreg;
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tmpreg = CRC->CR;
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tmpreg &= ~(CRC_CR_RFLTIN_Msk);
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tmpreg |= (SetValue & CRC_CR_RFLTIN_Msk);
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CRC->CR = tmpreg;
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}
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uint32_t CRC_CR_RFLTIN_Get(void)
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{
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return (CRC->CR & CRC_CR_RFLTIN_Msk);
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}
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/* CRCÊä³ö·´×ª¿ØÖÆ (Reflected Output)
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0£ºÊäÈë²»·´×ª
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1£ºÊäÈë°´×Ö½Ú·´×ª
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ÀýÈ磺
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Èç¹ûRFLTO==1£¬Èôµ±Ç°¼ÆËãµÄCRC½á¹ûΪ0x1234£¬ÔòÊä³öµÄ½á¹ûΪ0x2C48 Èç¹û RFLTO==0£¬ÔòÖ±½ÓÊä³ö0x1234 ×¢Ò⣺´Ë½á¹û²»Ò»¶¨Îª×îÖÕÊä³ö½á¹û£¬»¹ÐèÒª¿´XORÊÇ·ñΪ1£¬Ïê¼û±¾¼Ä´æÆ÷bit2˵Ã÷ Ïà¹Øº¯Êý */
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void CRC_CR_RFLTO_Set(uint32_t SetValue)
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{
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uint32_t tmpreg;
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tmpreg = CRC->CR;
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tmpreg &= ~(CRC_CR_RFLTO_Msk);
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tmpreg |= (SetValue & CRC_CR_RFLTO_Msk);
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CRC->CR = tmpreg;
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}
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uint32_t CRC_CR_RFLTO_Get(void)
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{
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return (CRC->CR & CRC_CR_RFLTO_Msk);
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}
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/* CRC½á¹û±ê־λ£¬Ö»¶Á (Result Flag)
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0£ºCRC½á¹ûΪ0
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1£ºCRC½á¹û·ÇÈ«0 Ïà¹Øº¯Êý */
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FlagStatus CRC_CR_RES_Chk(void)
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{
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if (CRC->CR & CRC_CR_RES_Msk)
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{
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return SET;
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}
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else
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{
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return RESET;
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}
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}
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/* CRCÔËËã±ê־λ£¬Ö»¶Á (Busy)
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0£ºCRCÔËËã½áÊø
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1£ºCRCÔËËã½øÐÐÖÐ Ïà¹Øº¯Êý */
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FlagStatus CRC_CR_BUSY_Chk(void)
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{
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if (CRC->CR & CRC_CR_BUSY_Msk)
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{
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return SET;
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}
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else
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{
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return RESET;
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}
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}
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/* Êä³öÒì»òʹÄÜ (Output XORed with CRC_XOR register enable)
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0£ºÊä³ö²»Òì»òCRC_XOR¼Ä´æÆ÷
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1£ºÊä³öÒì»òCRC_XOR¼Ä´æÆ÷ Ïà¹Øº¯Êý */
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void CRC_CR_XOR_Setable(FunState NewState)
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{
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if (NewState == ENABLE)
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{
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CRC->CR |= (CRC_CR_XOR_Msk);
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}
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else
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{
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CRC->CR &= ~(CRC_CR_XOR_Msk);
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}
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}
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FunState CRC_CR_XOR_Getable(void)
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{
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if (CRC->CR & (CRC_CR_XOR_Msk))
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{
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return ENABLE;
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}
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else
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{
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return DISABLE;
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}
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}
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/* CRC¶àÏîʽλ¿íÑ¡Ôñ (Polynomial width Selection)
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00£º32λ
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01£º16λ
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10£º8λ
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11£º7λ Ïà¹Øº¯Êý */
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void CRC_CR_SEL_Set(uint32_t SetValue)
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{
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uint32_t tmpreg;
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tmpreg = CRC->CR;
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tmpreg &= ~(CRC_CR_SEL_Msk);
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tmpreg |= (SetValue & CRC_CR_SEL_Msk);
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CRC->CR = tmpreg;
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}
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uint32_t CRC_CR_SEL_Get(void)
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{
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return (CRC->CR & CRC_CR_SEL_Msk);
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}
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/* CRCÏßÐÔ·´À¡ÒÆλ¼Ä´æÆ÷ (Linear Feedback Shift Register)
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ÔËË㿪ʼǰ¿ÉÒÔÓÉÈí¼þдÈëCRC³õʼֵ Ïà¹Øº¯Êý */
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void CRC_LFSR_Write(uint32_t SetValue)
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{
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CRC->LFSR = (SetValue);
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}
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uint32_t CRC_LFSR_Read(void)
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{
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return (CRC->LFSR);
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}
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/* CRCÔËËã½á¹ûÒì»ò¼Ä´æÆ÷ (eXclusive OR)
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µ±CRC_CR.XORΪ1ʱ£¬CRC½á¹ûÊä³öÇ°½«Òì»ò´Ë¼Ä´æÆ÷µÄÊý¾Ý¡£ Ïà¹Øº¯Êý */
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void CRC_XOR_Write(uint32_t SetValue)
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{
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CRC->XOR = (SetValue);
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}
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uint32_t CRC_XOR_Read(void)
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{
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return (CRC->XOR);
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}
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/* CRCÔËËã¶àÏîʽϵÊý (CRC Polynominals) Ïà¹Øº¯Êý */
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void CRC_POLY_Write(uint32_t SetValue)
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{
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CRC->POLY = (SetValue);
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}
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uint32_t CRC_POLY_Read(void)
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{
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return (CRC->POLY);
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}
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void CRC_Deinit(void)
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{
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//CRC->DR = 0xFFFFFFFF;
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//CRC->CR = 0x00000002;
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//CRC->LFSR = 0xFFFFFFFF;
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//CRC->XOR = 0x00000000;
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//CRC->POLY = 0x00000000;
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}
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//Code_End
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/* CRC³õʼ»¯ÅäÖú¯Êý*/
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void CRC_Init(CRC_InitTypeDef* para)
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{
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CRC_LFSR_Write(para->LFSR); /*!<³õÖµ¼Ä´æÆ÷*/
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CRC_CR_SEL_Set(para->CRCSEL); /*!<CRCУÑé¶àÏîʽλ¿íÑ¡Ôñ*/
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CRC_CR_OPWD_Set(para->OPWD); /*!<WORD²Ù×÷ʹÄÜ*/
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CRC_CR_PARA_Set(para->PARA); /*!<CRC¿ìËÙ¼ÆËãʹÄÜ*/
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CRC_CR_RFLTIN_Set(para->RFLTIN); /*!<CRCÊäÈ뷴ת¿ØÖÆ*/
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CRC_CR_RFLTO_Set(para->RFLTO); /*!<CRCÊä³ö·´×ª¿ØÖÆ*/
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CRC_CR_XOR_Setable(para->XOR); /*!<Êä³öÒì»òʹÄÜ*/
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CRC_XOR_Write(para->CRC_XOR); /*!<ÔËËã½á¹ûÒì»ò¼Ä´æÆ÷*/
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CRC_POLY_Write(para->CRCPOLY); /*!<CRC¶àÏîʽ¼Ä´æÆ÷*/
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}
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/******END OF FILE****/
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