rt-thread/bsp/nuvoton_m451/Libraries/StdDriver/inc/acmp.h

/**************************************************************************//**
 * @file     ACMP.h
 * @version  V0.10
 * $Revision: 10 $
 * $Date: 15/08/11 10:26a $
 * @brief    M451 Series ACMP Driver Header File
 *
 * @note
 * Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved.
 *
 ******************************************************************************/
#ifndef __ACMP_H__
#define __ACMP_H__

/*---------------------------------------------------------------------------------------------------------*/
/* Include related headers                                                                                 */
/*---------------------------------------------------------------------------------------------------------*/
#include "M451Series.h"

#ifdef __cplusplus
extern "C"
{
#endif


/** @addtogroup Standard_Driver Standard Driver
  @{
*/

/** @addtogroup ACMP_Driver ACMP Driver
  @{
*/


/** @addtogroup ACMP_EXPORTED_CONSTANTS ACMP Exported Constants
  @{
*/



/*---------------------------------------------------------------------------------------------------------*/
/* ACMP_CTL constant definitions                                                                           */
/*---------------------------------------------------------------------------------------------------------*/
#define ACMP_CTL_FILTSEL_OFF         (0UL << 13) /*!< ACMP_CTL setting for filter function disabled. */
#define ACMP_CTL_FILTSEL_1PCLK       (1UL << 13) /*!< ACMP_CTL setting for 1 PCLK filter count. */
#define ACMP_CTL_FILTSEL_2PCLK       (2UL << 13) /*!< ACMP_CTL setting for 2 PCLK filter count. */
#define ACMP_CTL_FILTSEL_4PCLK       (3UL << 13) /*!< ACMP_CTL setting for 4 PCLK filter count. */
#define ACMP_CTL_FILTSEL_8PCLK       (4UL << 13) /*!< ACMP_CTL setting for 8 PCLK filter count. */
#define ACMP_CTL_FILTSEL_16PCLK      (5UL << 13) /*!< ACMP_CTL setting for 16 PCLK filter count. */
#define ACMP_CTL_FILTSEL_32PCLK      (6UL << 13) /*!< ACMP_CTL setting for 32 PCLK filter count. */
#define ACMP_CTL_FILTSEL_64PCLK      (7UL << 13) /*!< ACMP_CTL setting for 64 PCLK filter count. */
#define ACMP_CTL_INTPOL_RF           (0UL << 8)  /*!< ACMP_CTL setting for selecting rising edge and falling edge as interrupt condition. */
#define ACMP_CTL_INTPOL_R            (1UL << 8)  /*!< ACMP_CTL setting for selecting rising edge as interrupt condition. */
#define ACMP_CTL_INTPOL_F            (2UL << 8)  /*!< ACMP_CTL setting for selecting falling edge as interrupt condition. */
#define ACMP_CTL_POSSEL_P0           (0UL << 6)  /*!< ACMP_CTL setting for selecting ACMPx_P0 pin as the source of ACMP V+. */
#define ACMP_CTL_POSSEL_P1           (1UL << 6)  /*!< ACMP_CTL setting for selecting ACMPx_P1 pin as the source of ACMP V+. */
#define ACMP_CTL_POSSEL_P2           (2UL << 6)  /*!< ACMP_CTL setting for selecting ACMPx_P2 pin as the source of ACMP V+. */
#define ACMP_CTL_POSSEL_P3           (3UL << 6)  /*!< ACMP_CTL setting for selecting ACMPx_P3 pin as the source of ACMP V+. */
#define ACMP_CTL_NEGSEL_PIN          (0UL << 4)  /*!< ACMP_CTL setting for selecting the voltage of ACMP negative input pin as the source of ACMP V-. */
#define ACMP_CTL_NEGSEL_CRV          (1UL << 4)  /*!< ACMP_CTL setting for selecting internal comparator reference voltage as the source of ACMP V-. */
#define ACMP_CTL_NEGSEL_VBG          (2UL << 4)  /*!< ACMP_CTL setting for selecting internal Band-gap voltage as the source of ACMP V-. */
#define ACMP_CTL_NEGSEL_DAC          (3UL << 4)  /*!< ACMP_CTL setting for selecting DAC output voltage as the source of ACMP V-. */
#define ACMP_CTL_HYSTERESIS_ENABLE   (1UL << 2)  /*!< ACMP_CTL setting for enabling the hysteresis function. */
#define ACMP_CTL_HYSTERESIS_DISABLE  (0UL << 2)  /*!< ACMP_CTL setting for disabling the hysteresis function. */

/*---------------------------------------------------------------------------------------------------------*/
/* ACMP_VREF constant definitions                                                                          */
/*---------------------------------------------------------------------------------------------------------*/
#define ACMP_VREF_CRVSSEL_VDDA       (0UL << 6)  /*!< ACMP_VREF setting for selecting analog supply voltage VDDA as the CRV source voltage */
#define ACMP_VREF_CRVSSEL_INTVREF    (1UL << 6)  /*!< ACMP_VREF setting for selecting internal reference voltage as the CRV source voltage */


/*@}*/ /* end of group ACMP_EXPORTED_CONSTANTS */


/** @addtogroup ACMP_EXPORTED_FUNCTIONS ACMP Exported Functions
  @{
*/

/*---------------------------------------------------------------------------------------------------------*/
/*  Define Macros and functions                                                                            */
/*---------------------------------------------------------------------------------------------------------*/


/**
  * @brief This macro is used to enable output inverse function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set ACMPOINV bit of ACMP_CTL register to enable output inverse function.
  */
#define ACMP_ENABLE_OUTPUT_INVERSE(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_ACMPOINV_Msk)

/**
  * @brief This macro is used to disable output inverse function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear ACMPOINV bit of ACMP_CTL register to disable output inverse function.
  */
#define ACMP_DISABLE_OUTPUT_INVERSE(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_ACMPOINV_Msk)

/**
  * @brief This macro is used to select ACMP negative input source
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @param[in] u32Src is comparator negative input selection. Including:
  *                  - \ref ACMP_CTL_NEGSEL_PIN
  *                  - \ref ACMP_CTL_NEGSEL_CRV
  *                  - \ref ACMP_CTL_NEGSEL_VBG
  *                  - \ref ACMP_CTL_NEGSEL_DAC
  * @return None
  * @details This macro will set NEGSEL (ACMP_CTL[5:4]) to determine the source of negative input.
  */
#define ACMP_SET_NEG_SRC(acmp, u32ChNum, u32Src) ((acmp)->CTL[(u32ChNum)%2] = ((acmp)->CTL[(u32ChNum)%2] & ~ACMP_CTL_NEGSEL_Msk) | (u32Src))

/**
  * @brief This macro is used to enable hysteresis function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set HYSEN bit of ACMP_CTL register to enable hysteresis function.
  */
#define ACMP_ENABLE_HYSTERESIS(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_HYSEN_Msk)

/**
  * @brief This macro is used to disable hysteresis function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear HYSEN bit of ACMP_CTL register to disable hysteresis function.
  */
#define ACMP_DISABLE_HYSTERESIS(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_HYSEN_Msk)

/**
  * @brief This macro is used to enable interrupt
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set ACMPIE bit of ACMP_CTL register to enable interrupt function.
  *          If wake-up function is enabled, the wake-up interrupt will be enabled as well.
  */
#define ACMP_ENABLE_INT(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_ACMPIE_Msk)

/**
  * @brief This macro is used to disable interrupt
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear ACMPIE bit of ACMP_CTL register to disable interrupt function.
  */
#define ACMP_DISABLE_INT(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_ACMPIE_Msk)

/**
  * @brief This macro is used to enable ACMP
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set ACMPEN bit of ACMP_CTL register to enable analog comparator.
  */
#define ACMP_ENABLE(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_ACMPEN_Msk)

/**
  * @brief This macro is used to disable ACMP
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear ACMPEN bit of ACMP_CTL register to disable analog comparator.
  */
#define ACMP_DISABLE(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_ACMPEN_Msk)

/**
  * @brief This macro is used to get ACMP output value
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return  ACMP output value
  * @details This macro will return the ACMP output value.
  */
#define ACMP_GET_OUTPUT(acmp, u32ChNum) (((acmp)->STATUS & (ACMP_STATUS_ACMPO0_Msk<<((u32ChNum)%2)))?1:0)

/**
  * @brief This macro is used to get ACMP interrupt flag
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return   ACMP interrupt occurred (1) or not (0)
  * @details This macro will return the ACMP interrupt flag.
  */
#define ACMP_GET_INT_FLAG(acmp, u32ChNum) (((acmp)->STATUS & (ACMP_STATUS_ACMPIF0_Msk<<((u32ChNum)%2)))?1:0)

/**
  * @brief This macro is used to clear ACMP interrupt flag
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return   None
  * @details This macro will write 1 to ACMPIFn bit of ACMP_STATUS register to clear interrupt flag.
  */
#define ACMP_CLR_INT_FLAG(acmp, u32ChNum) ((acmp)->STATUS = (ACMP_STATUS_ACMPIF0_Msk<<((u32ChNum)%2)))

/**
  * @brief This macro is used to clear ACMP wake-up interrupt flag
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return   None
  * @details This macro will write 1 to WKIFn bit of ACMP_STATUS register to clear interrupt flag.
  */
#define ACMP_CLR_WAKEUP_INT_FLAG(acmp, u32ChNum) ((acmp)->STATUS = (ACMP_STATUS_WKIF0_Msk<<((u32ChNum)%2)))

/**
  * @brief This macro is used to enable ACMP wake-up function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set WKEN (ACMP_CTL[16]) to enable ACMP wake-up function.
  */
#define ACMP_ENABLE_WAKEUP(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_WKEN_Msk)

/**
  * @brief This macro is used to disable ACMP wake-up function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear WKEN (ACMP_CTL[16]) to disable ACMP wake-up function.
  */
#define ACMP_DISABLE_WAKEUP(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_WKEN_Msk)

/**
  * @brief This macro is used to select ACMP positive input pin
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @param[in] u32Pin Comparator positive pin selection. Including:
  *                  - \ref ACMP_CTL_POSSEL_P0
  *                  - \ref ACMP_CTL_POSSEL_P1
  *                  - \ref ACMP_CTL_POSSEL_P2
  *                  - \ref ACMP_CTL_POSSEL_P3
  * @return None
  * @details This macro will set POSSEL (ACMP_CTL[7:6]) to determine the comparator positive input pin.
  */
#define ACMP_SELECT_P(acmp, u32ChNum, u32Pin) ((acmp)->CTL[(u32ChNum)%2] = ((acmp)->CTL[(u32ChNum)%2] & ~ACMP_CTL_POSSEL_Msk) | (u32Pin))

/**
  * @brief This macro is used to enable ACMP filter function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will set OUTSEL (ACMP_CTL[12]) to enable output filter function.
  */
#define ACMP_ENABLE_FILTER(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] |= ACMP_CTL_OUTSEL_Msk)

/**
  * @brief This macro is used to disable ACMP filter function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @return None
  * @details This macro will clear OUTSEL (ACMP_CTL[12]) to disable output filter function.
  */
#define ACMP_DISABLE_FILTER(acmp, u32ChNum) ((acmp)->CTL[(u32ChNum)%2] &= ~ACMP_CTL_OUTSEL_Msk)

/**
  * @brief This macro is used to set ACMP filter function
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @param[in] u32Cnt is comparator filter count setting.
  *                  - \ref ACMP_CTL_FILTSEL_OFF
  *                  - \ref ACMP_CTL_FILTSEL_1PCLK
  *                  - \ref ACMP_CTL_FILTSEL_2PCLK
  *                  - \ref ACMP_CTL_FILTSEL_4PCLK
  *                  - \ref ACMP_CTL_FILTSEL_8PCLK
  *                  - \ref ACMP_CTL_FILTSEL_16PCLK
  *                  - \ref ACMP_CTL_FILTSEL_32PCLK
  *                  - \ref ACMP_CTL_FILTSEL_64PCLK
  * @return None
  * @details When ACMP output filter function is enabled, the output sampling count is determined by FILTSEL (ACMP_CTL[15:13]).
  */
#define ACMP_SET_FILTER(acmp, u32ChNum, u32Cnt) ((acmp)->CTL[(u32ChNum)%2] = ((acmp)->CTL[(u32ChNum)%2] & ~ACMP_CTL_FILTSEL_Msk) | (u32Cnt))

/**
  * @brief This macro is used to select comparator reference voltage
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32Level  The comparator reference voltage setting.
  *             The formula is:
  *                       comparator reference voltage = CRV source voltage x (1/6 + u32Level/24)
  *             The range of u32Level is 0 ~ 15.
  * @return   None
  * @details  When CRV is selected as ACMP negative input source, the CRV level is determined by CRVCTL (ACMP_VREF[3:0]).
  */
#define ACMP_CRV_SEL(acmp, u32Level) ((acmp)->VREF = ((acmp)->VREF & ~ACMP_VREF_CRVCTL_Msk) | ((u32Level)<<ACMP_VREF_CRVCTL_Pos))

/**
  * @brief This macro is used to select the source of CRV
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32Src is the source of CRV. Including:
  *                  - \ref ACMP_VREF_CRVSSEL_VDDA
  *                  - \ref ACMP_VREF_CRVSSEL_INTVREF
  * @return None
  * @details The source of CRV can be VDDA or internal reference voltage. The internal reference voltage level is determined by SYS_VREFCTL register.
  */
#define ACMP_SELECT_CRV_SRC(acmp, u32Src) ((acmp)->VREF = ((acmp)->VREF & ~ACMP_VREF_CRVSSEL_Msk) | (u32Src))

/**
  * @brief This macro is used to select ACMP interrupt condition
  * @param[in] acmp The pointer of the specified ACMP module
  * @param[in] u32ChNum The ACMP number
  * @param[in] u32Cond Comparator interrupt condition selection. Including:
  *                  - \ref ACMP_CTL_INTPOL_RF
  *                  - \ref ACMP_CTL_INTPOL_R
  *                  - \ref ACMP_CTL_INTPOL_F
  * @return None
  * @details The ACMP output interrupt condition can be rising edge, falling edge or any edge.
  */
#define ACMP_SELECT_INT_COND(acmp, u32ChNum, u32Cond) ((acmp)->CTL[(u32ChNum)%2] = ((acmp)->CTL[(u32ChNum)%2] & ~ACMP_CTL_INTPOL_Msk) | (u32Cond))



/* Function prototype declaration */
void ACMP_Open(ACMP_T *, uint32_t u32ChNum, uint32_t u32NegSrc, uint32_t u32HysteresisEn);
void ACMP_Close(ACMP_T *, uint32_t u32ChNum);



/*@}*/ /* end of group ACMP_EXPORTED_FUNCTIONS */

/*@}*/ /* end of group ACMP_Driver */

/*@}*/ /* end of group Standard_Driver */

#ifdef __cplusplus
}
#endif


#endif //__ACMP_H__

/*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/