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/******************************************************************************
*
* @brief providing APIs for configuring ACMP.
*
*******************************************************************************
*
* provide APIs for configuring ACMP
******************************************************************************/
#include "common.h"
#include "acmp.h"
/******************************************************************************
* Global variables
******************************************************************************/
/******************************************************************************
* Constants and macros
******************************************************************************/
/******************************************************************************
* Local types
******************************************************************************/
/******************************************************************************
* Local function prototypes
******************************************************************************/
/******************************************************************************
* Local variables
******************************************************************************/
ACMP_CallbackPtr ACMP_Callback[2] = {(ACMP_CallbackPtr)NULL};
/******************************************************************************
* Local functions
******************************************************************************/
/******************************************************************************
* Global functions
******************************************************************************/
void ACMP0_Isr(void);
void ACMP1_Isr(void);
/******************************************************************************
* ACMP api list.
*
*//*! @addtogroup acmp_api_list
* @{
*******************************************************************************/
/*****************************************************************************//*!
*
* @brief initialize ACMP as per control field.
*
* @param pACMPx pointer to an ACMP register base.
* @param pConfig control parameters.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_DeInit.
*
*****************************************************************************/
void ACMP_Init(ACMP_Type *pACMPx, ACMP_ConfigType *pConfig)
{
if(ACMP0 == pACMPx)
{
/* enable clock to ACMP */
SIM->SCGC |= SIM_SCGC_ACMP0_MASK;
/* enable ACMP interrupt */
if(pConfig->sCtrlStatus.bits.bIntEn)
NVIC_EnableIRQ(ACMP0_IRQn);
}
else
{
SIM->SCGC |= SIM_SCGC_ACMP1_MASK;
if(pConfig->sCtrlStatus.bits.bIntEn)
NVIC_EnableIRQ(ACMP1_IRQn);
}
/* neg and pos pin are not equal */
pACMPx->C0 = pConfig->sPinSelect.byte;
ACMP_ConfigDAC(pACMPx, &pConfig->sDacSet );
//pACMPx->C1 = pConfig->sDacSet.byte;
pACMPx->C2 = pConfig->sPinEnable.byte;
pACMPx->CS = pConfig->sCtrlStatus.byte;
}
/*****************************************************************************//*!
*
* @brief write ACMP register bits.
*
* @param pACMPx pointer to an ACMP register base.
* @param pDACConfig pointer to an ACMP DAC control structure.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void ACMP_ConfigDAC(ACMP_Type *pACMPx, ACMP_DACType *pDACConfig)
{
pACMPx->C1 = pDACConfig->byte;
}
/*****************************************************************************//*!
*
* @brief deinit ACMP module.
*
* @param pACMPx pointer to an ACMP register base.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
* @see ACMP_Init.
*
*****************************************************************************/
void ACMP_DeInit(ACMP_Type *pACMPx)
{
if(ACMP0 == pACMPx)
{
if(pACMPx->CS & ACMP_CS_ACIE_MASK)
NVIC_DisableIRQ(ACMP0_IRQn);
}
else
{
if(pACMPx->CS & ACMP_CS_ACIE_MASK)
NVIC_DisableIRQ(ACMP1_IRQn);
}
pACMPx->CS = 0;
pACMPx->C0 = 0;
pACMPx->C1 = 0;
pACMPx->C2 = 0;
if(ACMP0 == pACMPx)
{
SIM->SCGC &= ~SIM_SCGC_ACMP0_MASK;
}
else
{
SIM->SCGC &= ~SIM_SCGC_ACMP1_MASK;
}
}
/*****************************************************************************//*!
*
* @brief set up ACMP callback routines to be called by interrupt service routine.
*
* @param pACMPx pointer to an ACMP register base.
* @param pfnCallback callback routine.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void ACMP_SetCallback(ACMP_Type *pACMPx, ACMP_CallbackPtr pfnCallback)
{
if(ACMP0 == pACMPx)
{
ACMP_Callback[0] = pfnCallback;
}
else
{
ACMP_Callback[1] = pfnCallback;
}
}
/*! @} End of acmp_api_list */
/*****************************************************************************//*!
*
* @brief ACMP0 interrupt service routine.
*
* @param none.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void ACMP0_Isr(void)
{
if(ACMP_Callback[0])
{
ACMP_Callback[0](); /* call callback routine */
}
}
/*****************************************************************************//*!
*
* @brief ACMP1 interrupt service routine.
*
* @param none.
*
* @return none.
*
* @ Pass/ Fail criteria: none.
*
*****************************************************************************/
void ACMP1_Isr(void)
{
if(ACMP_Callback[1])
{
ACMP_Callback[1](); /* call callback routine */
}
}
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