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/******************************************************************************
* @brief header file for ACMP utilities.
*
*******************************************************************************
*
* provide APIs for accessing ACMP
******************************************************************************/
#ifndef _MY_ACMP_H_
#define _MY_ACMP_H_
#ifdef __cplusplus
extern "C" {
#endif
/******************************************************************************
* Includes
******************************************************************************/
/******************************************************************************
* Constants
******************************************************************************/
/* DAC reference select */
enum
{
DAC_REF_BANDGAP = 0,
DAC_REF_VDDA
};
/******************************************************************************
* Macros
******************************************************************************/
/******************************************************************************
* ACMP module number definition *
******************************************************************************/
#define MAX_ACMP_NO 2
/******************************************************************************
* ACMP positive and negative pin select definition
*
*//*! @addtogroup acmp_pinsel_list
* @{
*******************************************************************************/
#define ACMP_INPUT_P_EXT0 (0<<4) /*!< positive pin select external pin 0 */
#define ACMP_INPUT_P_EXT1 (1<<4) /*!< positive pin select external pin 1 */
#define ACMP_INPUT_P_EXT2 (2<<4) /*!< positive pin select external pin 2 */
#define ACMP_INPUT_P_DAC (3<<4) /*!< positive pin select internal DAC */
#define ACMP_INPUT_N_EXT0 0 /*!< positive pin select external pin 0 */
#define ACMP_INPUT_N_EXT1 1 /*!< positive pin select external pin 1 */
#define ACMP_INPUT_N_EXT2 2 /*!< positive pin select external pin 2 */
#define ACMP_INPUT_N_DAC 3 /*!< positive pin select internal DAC */
/*! @} End of acmp_pinsel_list */
/******************************************************************************
* ACMP interrupt sensitivity edge definition
*
*//*! @addtogroup acmp_intedgesel
* @{
*******************************************************************************/
#define ACMP_SENSITIVITYMODE_FALLING 0 /*!< interrupt on falling edge */
#define ACMP_SENSITIVITYMODE_RISING 1 /*!< interrupt on rising edge */
#define ACMP_SENSITIVITYMODE_ANY 3 /*!< interrupt on falling or rising edge */
/*! @} End of acmp_intedgesel */
/******************************************************************************
* ACMP hysterisis selection definition
*
*//*! @addtogroup acmp_hyst
* @{
*******************************************************************************/
#define ACMP_HYST_20MV (0<<6) /*!< 20mv hyst */
#define ACMP_HYST_30MV (1<<6) /*!< 30mv hyst */
/*! @} End of acmp_hyst */
/******************************************************************************
* ACMP internal DAC reference selection definition
*
*//*! @addtogroup acmp_dacref
* @{
*******************************************************************************/
#define ACMP_DAC_REFERENCE_BANDGAP (0<<6) /*!< select bandgap as refference */
#define ACMP_DAC_REFERENCE_VDDA (1<<6) /*!< select VDDA as refference */
/*! @} End of acmp_dacref */
/******************************************************************************
* Types
******************************************************************************/
/*! @brief ACMP_CALLBACK function declaration */
typedef void (*ACMP_CallbackPtr)(void);
/*! @} End of acmp_callback */
/******************************************************************************
* ACMP control status struct
*
*//*! @addtogroup acmp_ctrlstatusstruct
* @{
*******************************************************************************/
/*!
* @brief ACMP control and status fields type.
*
*/
typedef union
{
uint8_t byte; /*!< byte field of union type */
struct
{
uint8_t bMod : 2; /*!< Sensitivity modes of the interrupt trigger */
uint8_t bOutEn : 1; /*!< Output can be placed onto an external pin */
uint8_t bOutState : 1; /*!< The current value of the analog comparator output */
uint8_t bIntEn : 1; /*!< ACMP interrupt enable */
uint8_t bIntFlag : 1; /*!< ACMP Interrupt Flag Bit */
uint8_t bHyst : 1; /*!< Selects ACMP hystersis */
uint8_t bEn : 1; /*!< Enables the ACMP module */
}bits; /*!< bitfield of union type */
}ACMP_CtrlStatusType, *ACMP_CtrlStatusPtr; /*!< ACMP Control/Status reg structure */
/*! @} End of acmp_ctrlstatusstruct */
/******************************************************************************
* ACMP pin select struct
*
*//*! @addtogroup acmp_pinselectstruct
* @{
*******************************************************************************/
/*!
* @brief ACMP external pins control struct.
*
*/
typedef union
{
uint8_t byte; /*!< byte field of union type */
struct
{
uint8_t bNegPin : 2; /*!< Negative pin select */
uint8_t : 2;
uint8_t bPosPin : 2; /*!< Positive pin select */
uint8_t : 2;
}bits; /*!< bitfield of union type */
}ACMP_PinSelType, *ACMP_PinSelPtr; /*!< ACMP Pin select structure */
/*! @} End of acmp_pinselectstruct */
/******************************************************************************
* ACMP DAC control struct
*
*//*! @addtogroup acmp_dacctrlstruct
* @{
*******************************************************************************/
/*!
* @brief ACMP internal ADC control struct.
*
*/
typedef union
{
uint8_t byte; /*!< byte field of union type */
struct
{
uint8_t bVal : 6; /*!< 6 bit DAC value */
uint8_t bRef : 1; /*!< 6 bit DAC reference select */
uint8_t bEn : 1; /*!< 6 bit DAC enable bit */
}bits; /*!< bitfield of union type */
}ACMP_DACType, *ACMP_DACPtr; /*!< ACMP DAC control structure */
/*! @} End of acmp_dacctrlstruct */
/******************************************************************************
* ACMP pin enable union
*
*//*! @addtogroup acmp_pinenunion
* @{
*******************************************************************************/
/*!
* @brief ACMP external input pin enable control struct.
*
*/
typedef union
{
uint8_t byte; /*!< byte field of union type */
struct
{
uint8_t bEn : 3; /*!< ACMP external input pin enable */
uint8_t bRsvd : 5;
}bits; /*!< bitfield of union type */
}ACMP_PinEnType, *ACMP_PinEnPtr; /*!< ACMP Pin enable structure */
/*! @} End of acmp_pinenunion */
/******************************************************************************
* ACMP config struct
*
*//*! @addtogroup acmp_configstruct
* @{
*******************************************************************************/
/*!
* @brief ACMP module configuration struct.
*
*/
typedef struct
{
ACMP_CtrlStatusType sCtrlStatus; /*!< ACMP control and status */
ACMP_PinSelType sPinSelect; /*!< ACMP pin select */
ACMP_DACType sDacSet; /*!< ACMP internal dac set */
ACMP_PinEnType sPinEnable; /*!< ACMP external pin control */
}ACMP_ConfigType, *ACMP_ConfigPtr;
/*! @} End of acmp_configstruct */
/******************************************************************************
* Global variables
******************************************************************************/
/*!
* inline functions
*/
/******************************************************************************
* ACMP api list.
*
*//*! @addtogroup acmp_api_list
* @{
*******************************************************************************/
/*****************************************************************************//*!
*
* @brief enable the acmp module.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_Disable.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_Enable(ACMP_Type *pACMPx)
{
pACMPx->CS |= ACMP_CS_ACE_MASK;
}
/*****************************************************************************//*!
*
* @brief disable the acmp module.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_Enable.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_Disable(ACMP_Type *pACMPx)
{
pACMPx->CS &= ~ACMP_CS_ACE_MASK;
}
/*****************************************************************************//*!
*
* @brief select sensitivity modes of the interrupt trigger.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8EdgeSelect falling or rising selction, 0~3.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_SelectIntMode(ACMP_Type *pACMPx, uint8_t u8EdgeSelect)
{
pACMPx->CS &= ~ACMP_CS_ACMOD_MASK;
pACMPx->CS |= ACMP_CS_ACMOD(u8EdgeSelect & 0x3);
}
/*****************************************************************************//*!
*
* @brief enable the ACMP module analog comparator output.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_DisablePinOut.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_EnablePinOut(ACMP_Type *pACMPx)
{
pACMPx->CS |= ACMP_CS_ACOPE_MASK;
}
/*****************************************************************************//*!
*
* @brief disable the ACMP module analog comparator output.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_EnablePinOut.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DisablePinOut(ACMP_Type *pACMPx)
{
pACMPx->CS &= ~ACMP_CS_ACOPE_MASK;
}
/*****************************************************************************//*!
*
* @brief select ACMP hystersis.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8HystSelect ACMP_HYST_20MV or ACMP_HYST_30MV.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_SelectHyst(ACMP_Type *pACMPx, uint8_t u8HystSelect)
{
pACMPx->CS &= ~ACMP_CS_HYST_MASK;
pACMPx->CS |= u8HystSelect;
}
/*****************************************************************************//*!
*
* @brief enable the acmp module interrupt.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_DisableInterrupt.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_EnableInterrupt(ACMP_Type *pACMPx)
{
pACMPx->CS |= ACMP_CS_ACIE_MASK;
}
/*****************************************************************************//*!
*
* @brief disable the acmp module interrupt.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_EnableInterrupt.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DisableInterrupt(ACMP_Type *pACMPx)
{
pACMPx->CS &= ~ACMP_CS_ACIE_MASK;
}
/*****************************************************************************//*!
*
* @brief get the interrupt flag bit.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_ClrFlag.
*
*****************************************************************************/
__STATIC_INLINE uint8_t ACMP_GetFlag(ACMP_Type *pACMPx)
{
return (pACMPx->CS & ACMP_CS_ACF_MASK);
}
/*****************************************************************************//*!
*
* @brief clear the interrupt flag bit.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_GetFlag.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_ClrFlag(ACMP_Type *pACMPx)
{
pACMPx->CS &= ~ACMP_CS_ACF_MASK;
}
/*****************************************************************************//*!
*
* @brief ACMP Positive Input Select.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8PosPinSel positive input select, ACMP_INPUT_P_EXT0~2 or ACMP_INPUT_P_DAC.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_NegativeInputSelect.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_PositiveInputSelect(ACMP_Type *pACMPx, uint8_t u8PosPinSel)
{
pACMPx->C0 &= ~ACMP_C0_ACPSEL_MASK;
pACMPx->C0 |= u8PosPinSel;
}
/*****************************************************************************//*!
*
* @brief ACMP Negative Input Select.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8NegPinSel negative input select, ACMP_INPUT_N_EXT0~2 or ACMP_INPUT_N_DAC.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_PositiveInputSelect.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_NegativeInputSelect(ACMP_Type *pACMPx, uint8_t u8NegPinSel)
{
pACMPx->C0 &= ~ACMP_C0_ACNSEL_MASK;
pACMPx->C0 |= u8NegPinSel;
}
/*****************************************************************************//*!
*
* @brief Enable 6 bit DAC in ACMP module.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_DacDisable.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DacEnable(ACMP_Type *pACMPx)
{
pACMPx->C1 |= ACMP_C1_DACEN_MASK;
}
/*****************************************************************************//*!
*
* @brief Disable 6 bit DAC in ACMP module.
*
* @param[in] pACMPx pointer to an ACMP module.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_DacEnable.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DacDisable(ACMP_Type *pACMPx)
{
pACMPx->C1 &= ~ACMP_C1_DACEN_MASK;
}
/*****************************************************************************//*!
*
* @brief ACMP 6 bit DAC Reference Select.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8RefSelect dac reference select:ACMP_DAC_REFERENCE_BANDGAP or ACMP_DAC_REFERENCE_VDDA.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DacReferenceSelect(ACMP_Type *pACMPx, uint8_t u8RefSelect)
{
pACMPx->C1 &= ~ACMP_C1_DACREF_MASK;
pACMPx->C1 |= u8RefSelect;
}
/*****************************************************************************//*!
*
* @brief ACMP 6 bit DAC Output Value Set.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8DacValue dac output set, Voutput= (Vin/64)x(DACVAL[5:0]+1).
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_DacOutputSet(ACMP_Type *pACMPx, uint8_t u8DacValue)
{
ASSERT(!(u8DacValue & (~ACMP_C1_DACVAL_MASK)));
pACMPx->C1 &= ~ACMP_C1_DACVAL_MASK;
pACMPx->C1 |= ACMP_C1_DACVAL(u8DacValue);
}
/*****************************************************************************//*!
*
* @brief Enable ACMP input pin.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8InputPin ACMP external pin, 0~2.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_InputPinEnable(ACMP_Type *pACMPx, uint8_t u8InputPin)
{
ASSERT(!(u8InputPin & (~ACMP_C2_ACIPE_MASK)));
pACMPx->C2 |= ACMP_C2_ACIPE(u8InputPin);
}
/*****************************************************************************//*!
*
* @brief Disable ACMP input pin.
*
* @param[in] pACMPx pointer to an ACMP module.
* @param[in] u8InputPin ACMP external pin, 0~2.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
__STATIC_INLINE void ACMP_InputPinDisable(ACMP_Type *pACMPx, uint8_t u8InputPin)
{
ASSERT(!(u8InputPin & (~ACMP_C2_ACIPE_MASK)));
pACMPx->C2 &= ~ACMP_C2_ACIPE(u8InputPin);
}
/*! @} End of acmp_api_list */
/******************************************************************************
* Global functions
******************************************************************************/
void ACMP_Init(ACMP_Type *pACMPx, ACMP_ConfigType *pConfig);
void ACMP_DeInit(ACMP_Type *pACMPx);
void ACMP_ConfigDAC(ACMP_Type *pACMPx, ACMP_DACType *pDACConfig);
void ACMP_SetCallback(ACMP_Type *pACMPx, ACMP_CallbackPtr pfnCallback);
#ifdef __cplusplus
}
#endif
#endif /* _MY_ACMP_H_ */
|
