68 lines
3.0 KiB
C
68 lines
3.0 KiB
C
/******************************************************************************************************************************************
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* 文件名称: SWM341_crc.c
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* 功能说明: SWM341单片机的CRC模块驱动库
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 注意事项:
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* 版本日期: V1.1.0 2017年10月25日
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* 升级记录:
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*
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*
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM341.h"
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#include "SWM341_crc.h"
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/******************************************************************************************************************************************
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* 函数名称: CRC_Init()
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* 功能说明: CRC 初始化
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* 输 入: CRC_TypeDef * CRCx 指定要被设置的CRC接口，有效值包括CRC
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* CRC_InitStructure * initStruct 包含CRC相关设定值的结构体
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void CRC_Init(CRC_TypeDef * CRCx, CRC_InitStructure * initStruct)
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{
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switch((uint32_t)CRCx)
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{
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case ((uint32_t)CRC):
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SYS->CLKEN0 |= (0x01 << SYS_CLKEN0_CRC_Pos);
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break;
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}
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CRCx->INIVAL = initStruct->init_crc;
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CRCx->CR = (1 << CRC_CR_EN_Pos) |
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(initStruct->Poly << CRC_CR_POLY_Pos) |
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(initStruct->in_width << CRC_CR_IBIT_Pos) |
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(initStruct->in_rev << CRC_CR_IREV_Pos) |
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(initStruct->in_not << CRC_CR_INOT_Pos) |
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(initStruct->out_rev << CRC_CR_OREV_Pos) |
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(initStruct->out_not << CRC_CR_ONOT_Pos);
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}
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/******************************************************************************************************************************************
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* 函数名称: CRC_SetInitVal()
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* 功能说明: 设置CRC计算初始值
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* 输 入: CRC_TypeDef * CRCx 指定要被设置的CRC接口，有效值包括CRC
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* uint32_t init_crc CRC计算初始值
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void CRC_SetInitVal(CRC_TypeDef * CRCx, uint32_t init_crc)
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{
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CRCx->INIVAL = init_crc;
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CRCx->CR |= (1 << CRC_CR_EN_Pos);
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}
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