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/**
*********************************************************************************
*
* @file ald_calc.c
* @brief CALC module driver.
*
* @version V1.0
* @date 04 Dec 2017
* @author AE Team
* @note
*
* Copyright (C) Shanghai Eastsoft Microelectronics Co. Ltd. All rights reserved.
*
*********************************************************************************
*/
#include "ald_calc.h"
/** @addtogroup ES32FXXX_ALD
* @{
*/
/** @defgroup CALC CALC
* @brief CALC module driver
* @{
*/
#ifdef ALD_CALC
/** @defgroup CALC_Public_Functions CALC Public Functions
* @brief Accelerating calculate functions
*
* @verbatim
==============================================================================
##### Accelerating calculate functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Square root operation.
(+) Division.
(+) Get DZ flag.
@endverbatim
* @{
*/
/**
* @brief Square root operation.
* @param data: The data;
* @retval The value of square root.
*/
uint32_t calc_sqrt(uint32_t data)
{
WRITE_REG(CALC->RDCND, data);
while (READ_BIT(CALC->SQRTSR, CALC_SQRTSR_BUSY_MSK));
return READ_REG(CALC->SQRTRES);
}
/**
* @brief Calculating division.
* @param dividend: The value of the dividend.
* @param divisor: The value of the divisor.
* @param remainder: The value of the remainder.
* @retval The result of division.
*/
uint32_t calc_div(uint32_t dividend, uint32_t divisor, uint32_t *remainder)
{
CLEAR_BIT(CALC->DIVCSR, CALC_DIVCSR_SIGN_MSK);
SET_BIT(CALC->DIVCSR, CALC_DIVCSR_TRM_MSK);
WRITE_REG(CALC->DIVDR, dividend);
WRITE_REG(CALC->DIVSR, divisor);
while (READ_BIT(CALC->DIVCSR, CALC_DIVCSR_BUSY_MSK));
*remainder = READ_REG(CALC->DIVRR);
return READ_REG(CALC->DIVQR);
}
/**
* @brief Calculating division.
* @param dividend: The value of the dividend.
* @param divisor: The value of the divisor.
* @param remainder: The value of the remainder.
* @retval The result of division.
*/
int32_t calc_div_sign(int32_t dividend, int32_t divisor, int32_t *remainder)
{
SET_BIT(CALC->DIVCSR, CALC_DIVCSR_SIGN_MSK);
SET_BIT(CALC->DIVCSR, CALC_DIVCSR_TRM_MSK);
WRITE_REG(CALC->DIVDR, dividend);
WRITE_REG(CALC->DIVSR, divisor);
while (READ_BIT(CALC->DIVCSR, CALC_DIVCSR_BUSY_MSK));
*remainder = READ_REG(CALC->DIVRR);
return READ_REG(CALC->DIVQR);
}
/**
* @brief Get the flag of divisor is zero.
* @retval The status, SET/RESET.
*/
flag_status_t calc_get_dz_status(void)
{
if (READ_BIT(CALC->DIVCSR, CALC_DIVCSR_DZ_MSK))
return SET;
return RESET;
}
/**
* @}
*/
#endif /* ALD_CALC */
/**
* @}
*/
/**
* @}
*/
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