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114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
/**************************************************************************//**
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* @file acmp.c
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* @version V1.00
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* $Revision: 3 $
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* $Date: 14/05/29 1:13p $
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* @brief NUC472/NUC442 Analog Comparator(ACMP) driver source file
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*
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* @note
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* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include "NUC472_442.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
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@{
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*/
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/** @addtogroup NUC472_442_ACMP_Driver ACMP Driver
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@{
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*/
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/** @addtogroup NUC472_442_ACMP_EXPORTED_FUNCTIONS ACMP Exported Functions
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@{
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*/
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/**
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* @brief Configure the specified ACMP module
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*
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* @param[in] acmp The base address of ACMP module
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* @param[in] u32ChNum comparator number, could be 0, 1, 2
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* @param[in] u32NegSrc is comparator negative input selection. Including:
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* - \ref ACMP_VNEG_PIN
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* - \ref ACMP_VNEG_BANDGAP
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* - \ref ACMP_VNEG_4_OVER_24_VDD
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* - \ref ACMP_VNEG_5_OVER_24_VDD
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* - \ref ACMP_VNEG_6_OVER_24_VDD
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* - \ref ACMP_VNEG_7_OVER_24_VDD
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* - \ref ACMP_VNEG_8_OVER_24_VDD
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* - \ref ACMP_VNEG_9_OVER_24_VDD
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* - \ref ACMP_VNEG_10_OVER_24_VDD
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* - \ref ACMP_VNEG_11_OVER_24_VDD
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* - \ref ACMP_VNEG_12_OVER_24_VDD
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* - \ref ACMP_VNEG_13_OVER_24_VDD
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* - \ref ACMP_VNEG_14_OVER_24_VDD
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* - \ref ACMP_VNEG_15_OVER_24_VDD
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* - \ref ACMP_VNEG_16_OVER_24_VDD
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* - \ref ACMP_VNEG_17_OVER_24_VDD
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* - \ref ACMP_VNEG_18_OVER_24_VDD
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* - \ref ACMP_VNEG_19_OVER_24_VDD
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* - \ref ACMP_VNEG_4_OVER_24_IREF
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* - \ref ACMP_VNEG_5_OVER_24_IREF
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* - \ref ACMP_VNEG_6_OVER_24_IREF
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* - \ref ACMP_VNEG_7_OVER_24_IREF
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* - \ref ACMP_VNEG_8_OVER_24_IREF
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* - \ref ACMP_VNEG_9_OVER_24_IREF
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* - \ref ACMP_VNEG_10_OVER_24_IREF
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* - \ref ACMP_VNEG_11_OVER_24_IREF
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* - \ref ACMP_VNEG_12_OVER_24_IREF
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* - \ref ACMP_VNEG_13_OVER_24_IREF
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* - \ref ACMP_VNEG_14_OVER_24_IREF
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* - \ref ACMP_VNEG_15_OVER_24_IREF
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* - \ref ACMP_VNEG_16_OVER_24_IREF
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* - \ref ACMP_VNEG_17_OVER_24_IREF
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* - \ref ACMP_VNEG_18_OVER_24_IREF
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* - \ref ACMP_VNEG_19_OVER_24_IREF
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*
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* @param[in] u32HysteresisEn is the hysteresis function option. Including:
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* - \ref ACMP_HYSTERESIS_ENABLE
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* - \ref ACMP_HYSTERESIS_DISABLE
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* @return None
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*/
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void ACMP_Open(ACMP_T *acmp, uint32_t u32ChNum, uint32_t u32NegSrc, uint32_t u32HysteresisEn)
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{
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if(u32NegSrc != ACMP_VNEG_PIN)
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ACMP->VREF = u32NegSrc;
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ACMP->CTL[u32ChNum] = (ACMP->CTL[u32ChNum] & (~(ACMP_CTL_NEGSEL_Msk | ACMP_CTL_HYSEN_Msk))) |
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((u32NegSrc != ACMP_VNEG_PIN ? ACMP_CTL_NEGSEL_Msk : 0) | u32HysteresisEn | ACMP_CTL_ACMPEN_Msk);
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}
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/**
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* @brief This function close comparator
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*
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* @param[in] acmp The base address of ACMP module
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* @param[in] u32ChNum comparator number.
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*
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* @return None
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*/
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void ACMP_Close(ACMP_T *acmp, uint32_t u32ChNum)
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{
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ACMP->CTL[u32ChNum] &= (~ACMP_CTL_ACMPEN_Msk);
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}
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/*@}*/ /* end of group NUC472_442_ACMP_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group NUC472_442_ACMP_Driver */
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/*@}*/ /* end of group NUC472_442_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
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