101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
|
/********************************** (C) COPYRIGHT *******************************
|
||
|
|
* File Name : ch32v30x_crc.c
|
||
|
|
* Author : WCH
|
||
|
|
* Version : V1.0.0
|
||
|
|
* Date : 2021/06/06
|
||
|
|
* Description : This file provides all the CRC firmware functions.
|
||
|
|
*********************************************************************************
|
||
|
|
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
|
||
|
|
* Attention: This software (modified or not) and binary are used for
|
||
|
|
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
|
||
|
|
*******************************************************************************/
|
||
|
|
#include "ch32v30x_crc.h"
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_ResetDR
|
||
|
|
*
|
||
|
|
* @brief Resets the CRC Data register (DR).
|
||
|
|
*
|
||
|
|
* @return none
|
||
|
|
*/
|
||
|
|
void CRC_ResetDR(void)
|
||
|
|
{
|
||
|
|
CRC->CTLR = CRC_CTLR_RESET;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_CalcCRC
|
||
|
|
*
|
||
|
|
* @brief Computes the 32-bit CRC of a given data word(32-bit).
|
||
|
|
*
|
||
|
|
* @param Data - data word(32-bit) to compute its CRC.
|
||
|
|
*
|
||
|
|
* @return 32-bit CRC.
|
||
|
|
*/
|
||
|
|
uint32_t CRC_CalcCRC(uint32_t Data)
|
||
|
|
{
|
||
|
|
CRC->DATAR = Data;
|
||
|
|
|
||
|
|
return (CRC->DATAR);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_CalcBlockCRC
|
||
|
|
*
|
||
|
|
* @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
|
||
|
|
*
|
||
|
|
* @param pBuffer - pointer to the buffer containing the data to be computed.
|
||
|
|
* BufferLength - length of the buffer to be computed.
|
||
|
|
*
|
||
|
|
* @return 32-bit CRC.
|
||
|
|
*/
|
||
|
|
uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
|
||
|
|
{
|
||
|
|
uint32_t index = 0;
|
||
|
|
|
||
|
|
for(index = 0; index < BufferLength; index++)
|
||
|
|
{
|
||
|
|
CRC->DATAR = pBuffer[index];
|
||
|
|
}
|
||
|
|
|
||
|
|
return (CRC->DATAR);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_GetCRC
|
||
|
|
*
|
||
|
|
* @brief Returns the current CRC value.
|
||
|
|
*
|
||
|
|
* @return 32-bit CRC.
|
||
|
|
*/
|
||
|
|
uint32_t CRC_GetCRC(void)
|
||
|
|
{
|
||
|
|
return (CRC->DATAR);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_SetIDRegister
|
||
|
|
*
|
||
|
|
* @brief Stores a 8-bit data in the Independent Data(ID) register.
|
||
|
|
*
|
||
|
|
* @param IDValue - 8-bit value to be stored in the ID register.
|
||
|
|
*
|
||
|
|
* @return none
|
||
|
|
*/
|
||
|
|
void CRC_SetIDRegister(uint8_t IDValue)
|
||
|
|
{
|
||
|
|
CRC->IDATAR = IDValue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn CRC_GetIDRegister
|
||
|
|
*
|
||
|
|
* @brief Returns the 8-bit data stored in the Independent Data(ID) register.
|
||
|
|
*
|
||
|
|
* @return 8-bit value of the ID register.
|
||
|
|
*/
|
||
|
|
uint8_t CRC_GetIDRegister(void)
|
||
|
|
{
|
||
|
|
return (CRC->IDATAR);
|
||
|
|
}
|