77 lines
3.9 KiB
C
77 lines
3.9 KiB
C
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/**
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******************************************************************************
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* @file hk32f0xx_divsqrt.h
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* @brief hk32f0xx divsqrt file.
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* The file is the unique include file that the application programmer
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* is using in the C source code.it is a patch file
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******************************************************************************
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**/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef __HK32F0xx_DIVSQRT_H
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#define __HK32F0xx_DIVSQRT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include "hk32f0xx.h"
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#define DVSQ_BUSY_WAIT_EN 1 /* 为1的话在读取DVSQ运算结果寄存器前都会判断并等待DVSQ空闲 */
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// DVSQ寄存器访问指针
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#define DVSQ DIVSQRT
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// DVSQ外设时钟操作
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#define RCC_AHBPeriph_DVSQ ((uint32_t)0x00000001)
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#define RCC_AHBPeriph_DVSQ_CLK_Enable() RCC->AHBENR2 |= RCC_AHBPeriph_DVSQ /* 使能DVSQ外设时钟 */
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#define RCC_AHBPeriph_DVSQ_CLK_Disable() RCC->AHBENR2 &= ~RCC_AHBPeriph_DVSQ /* 关闭DVSQ外设时钟 */
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/* DVSQ工作状态定义 */
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#define DVSQ_IDLE_NO_OPERATION ((uint32_t)0x00000000) /* 加速器处于空闲状态,并且尚未进行过开方或除法运算 */
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#define DVSQ_IDLE_SQRT ((uint32_t)0x20000000) /* 加速器处于空闲状态,并且完成的上一个操作是开方运算 */
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#define DVSQ_IDLE_DIV ((uint32_t)0x40000000) /* 加速器处于空闲状诚,并且完成的上一个操作为除法运算 */
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#define DVSQ_BUSY_SQRT ((uint32_t)0xA0000000) /* 加速器处于忙状态,并且正在进行开方运算 */
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#define DVSQ_BUSY_DIV ((uint32_t)0xC0000000) /* 加速器处于忙状态,并且正在进行除法运算 */
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/* 配置DVSQ除法运算的启动方式 */
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#define DVSQ_EnableDivFastStart() DVSQ->CSR &= ~DIVSQRT_CSR_DFS /* 使能快速启动除法运算功能 */
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#define DVSQ_DisableDivFastStart() DVSQ->CSR |= DIVSQRT_CSR_DFS /* 关闭快速启动除法运算功能 */
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/* 配置DVSQ除法是否带符号 */
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#define DVSQ_ConfigDivUnsigned() DVSQ->CSR |= DIVSQRT_CSR_UNSIGN_DIV /* 将DVSQ配置为执行无符号除法模式 */
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#define DVSQ_ConfigDivSigned() DVSQ->CSR &= ~DIVSQRT_CSR_UNSIGN_DIV /* 将DVSQ配置为执行带符号除法模式 */
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/* 配置DVSQ开方运算精度 */
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#define DVSQ_ConfigSqrtPresHigh() DVSQ->CSR |= DIVSQRT_CSR_HPRESQRT /* 配置DVSQ为高精度开方运算模式 */
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#define DVSQ_ConfigSqrtPresNormal() DVSQ->CSR &= ~DIVSQRT_CSR_HPRESQRT /* 配置DVSQ为普通精度开方运算模式 */
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/* 当DVSQ的CSR中DVSQ_CSR_DFS为1时,必须由软件启动除法运算,当该位为0时,往除数寄存器中写入值后硬件自动启动除法运算 */
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#define DVSQ_StartDivCalc() DVSQ->CSR |= DIVSQRT_CSR_DIV_SRT /* 开始除法运算 */
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/* DVSQ忙状态查询 */
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#define DVSQ_IsBusy() ((DVSQ->CSR & DIVSQRT_CSR_BUSY)? 1:0) /* 返回'1'表示忙; 返回'0'表示空闲 */
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/* DVSQ等待空闲 */
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#if (DVSQ_BUSY_WAIT_EN == 1)
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#define DVSQ_Wait() while(DVSQ_IsBusy())
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#else
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#define DVSQ_Wait()
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#endif
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/*DIVSQRT的API函数接口*/
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void HK_Dvsq_Init(void);
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uint32_t HK_Dvsq_Sqrt(uint32_t u32Radicand, FlagStatus eIsHighPres);
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uint32_t HK_Dvsq_Divsion(uint32_t u32Dividend, uint32_t u32Divisor, uint32_t *u32pRemainder, FlagStatus eIsUnsigned, FlagStatus eIsFastStart);
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#ifdef __cplusplus
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}
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#endif
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#endif
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