mirror of
https://gitee.com/Lyon1998/pikapython.git
synced 2025-01-15 17:02:53 +08:00
40 lines
1003 B
C
40 lines
1003 B
C
/*
|
|
* Copyright 2022 MindMotion Microelectronics Co., Ltd.
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include "hal_crc.h"
|
|
|
|
/* CRC initialization. */
|
|
void CRC_Init(CRC_Type * CRCx, CRC_Init_Type * init)
|
|
{
|
|
CRCx->CR &= ~(CRC_PR_PR_MASK | CRC_CR_RO_MASK | CRC_CR_RI_MASK | CRC_CR_BEO_MASK | CRC_CR_BEI_MASK);
|
|
CRCx->PR &= ~CRC_PR_PR_MASK;
|
|
CRCx->CR |= CRC_CR_PWIDTH(init->PolynomialWidth) | CRC_CR_RO(init->OutRev)
|
|
| CRC_CR_RI(init->InRev) | CRC_CR_BEO(init->OutEndian) | CRC_CR_BEI(init->InEndian);
|
|
CRCx->PR = CRC_PR_PR(init->Polynomial);
|
|
}
|
|
|
|
/* Set the value in CRC calculation unit as the initial value. */
|
|
void CRC_SetSeed(CRC_Type * CRCx, uint32_t val)
|
|
{
|
|
CRCx->IVR = CRC_IVR_IVR(val);
|
|
CRCx->CR |= CRC_CR_RST_MASK;
|
|
}
|
|
|
|
/* Set data for CRC calculation. */
|
|
void CRC_SetData(CRC_Type * CRCx, uint32_t val)
|
|
{
|
|
CRCx->DR = val;
|
|
}
|
|
|
|
/* Get CRC calculation result. */
|
|
uint32_t CRC_GetResult(CRC_Type * CRCx)
|
|
{
|
|
return CRCx->DR;
|
|
}
|
|
|
|
/* EOF. */
|